Double-stranded DNA and several single-stranded RNA copies make up the structure of cells. However, viruses can also contain single, double, or single-stranded RNA in addition to double-stranded or single-stranded DNA.
What distinguishes viruses from cellular organisms?Viruses are wholly parasitic since they lack ribosomes, mitochondria, or any other cell-like organelles. They are genetic parasites because they are unable to multiply without the metabolic activities of the host cell.
What features distinguish the architecture of various viruses?The kind and size of the nucleic acid, the size and form of the capsid, and whether or not the nucleocapsid is encased in a lipid envelope are the three structural factors that are used to further categorize viruses into families and genera (the capsid enclosed nucleic acid).
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During semi-conservative replication, the DNA sequence ACT results in which sequence on the new strand?
During semi-conservative replication, the DNA sequence ACT on one strand of the original DNA molecule would result in the sequence TGA on the new complementary strand.
What is DNA?
DNA (deoxyribonucleic acid) is a molecule that carries genetic information in all living organisms. It is made up of long chains of nucleotides, which are the basic building blocks of DNA. Each nucleotide consists of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. There are four types of nitrogenous bases in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
In semi-conservative replication, the original DNA molecule is unwound and separated into two strands by enzymes called helicases. These strands serve as templates for the synthesis of new complementary strands by an enzyme called DNA polymerase. The new strands are synthesized by adding nucleotides that are complementary to the nucleotides on the template strands, according to the base-pairing rules of DNA: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
Therefore, the sequence ACT on one strand of the original DNA molecule would result in the complementary sequence TGA on the new strand. This process results in two identical DNA molecules, each containing one original strand and one new strand. This is why the process is called semi-conservative replication, as it conserves one strand of the original DNA molecule while synthesizing a new complementary strand.
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__________ do NOT exhibit the property of adaptation.
Tonic receptors do not exhibit the property of adaptation.
When a receptor neuron's electric responses start to wane over time despite the ongoing presence of a constant-intensity suitable stimulus, this is called adaptation. The frequency of spikes produced within the receptor neuron gradually declines as a result of this shift.
Tonic receptors - Little or no adaptation is required for a sustained response from tonic receptors. Because the information is so important for protection, nociceptors and the majority of proprioceptors are tonic receptors. Phasic receptors respond to a stimuli quickly. Successful organisms use evolution and adaptation to stay alive. Extinctions result from organisms' inability to adapt to changing surroundings. We refer to this as natural selection. Life in all its forms develops.
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To respond to a chemical signal, a cell must have a ….. to which the signaling molecule can bind
Answer:
To respond to a chemical signal, a cell must have a receptor to which the signaling molecule can bind. Receptors are proteins that are embedded in the cell membrane or located within the cell. They have a specific shape that allows them to bind to specific signaling molecules, such as hormones or neurotransmitters. When a signaling molecule binds to its receptor, it triggers a response within the cell, such as a change in the activity of certain enzymes or the expression of specific genes. This process is known as signal transduction and is an important way that cells can communicate and respond to their environment.
Explanation:
Select the descriptions that apply to the ribosome.a cellular structure that is composed of both RNA and proteina membrane‑bound organelle that stores digestive enzymesa cellular structure that is responsible for the synthesis of proteinsa membranous network associated with protein productiona membrane-enclosed organelle involved with cellular respiration
A ribosome is a ribonucleoprotein, which is a complex of RNA and protein. It is made up of two subunits: small and large. The mRNA binds and is decoded in the smaller subunit, while the amino acids are added in the larger subunit.
RNA accounts for approximately 62% of ribosomes, with proteins accounting for the remainder. The structure of free and bound ribosomes is similar, and it is involved in protein synthesis. Ribosomes do something. The following are important ribosome functions: It assembles amino acids to form proteins, which are required for cellular functions.
Membrane-bound Ribosomes: when a ribosome begins to synthesise proteins that are needed in some organelles, the ribosome making this protein can become "membrane-bound". Visit Byju's to learn more about ribosomes.
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Bunnies: Black fur is dominant to white fur. Use the letter "B" and "b" to answer the
following question
Genotypes for:
Homozygous dominant
Heterozygous
Homozygous recessive
Phenotypes for:
Homozygous dominant
Heterozygous
Homozygous recessive
Answer:
Genotype for homozygous dominant: BB
Genotype for heterozygous: Bb
Genotype homozygous recessive: bb
Phenotype for homozygous dominant: BLACK FUR
Phenotype for heterozygous: BLACK FUR
Phenotype for homozygous recessive: WHITE FUR
Explanation:
⭐ Genotype = the combination of the alleles (lowercase and uppercase letters) that expresses a trait
⭐ Phenotype = the word description of the trait the genotype expresses
⭐ -homo = same
⭐ -hetero = different
⭐dominant = an uppercase letter (allele). if there is at least 1 dominant allele in a genotype, the dominant trait will be expressed.
⭐ recessive = a lowercase letter (allele). there has to be 2 recessive alleles in a genotype in order for the recessive trait to be expressed.
Why do snails reproduce so much?
Snails do proliferate quickly, especially considering that they may reproduce without a partner. Simply said, a snail fertilizes its own egg.
How frequently do snails mate?Snails can spawn as often as once per month when the right circumstances are present (warm temperature, high humidity). With an average of five reproductive cycles each year and the high rate of reproduction of garden snails, each individual snail may produce 430 eggs annually.
Food is so plentiful that the number of snails is exploding. They occasionally consume the same foods that your fish do. Snails will reproduce more quickly if your fish are overfed, and once this happens there is sort of a cascading effect.
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What are the most common ions found in plasma?
Na+, K+, Mg+, and Ca2+ are the most prevalent cations in blood plasma. Na+, however, is the dominant cation and is in charge of plasma osmolarity.
What blood plasma ion is most prevalent?The most common ion in plasma, sodium, makes up the majority of the plasma osmolarity. The amino acids from broken down tissues or plasma proteins can be used to create new biological structures.
What typically resides in plasma?In plasma, there are 8% to 9% solids and 91% to 92% of water. Coagulants, notably fibrinogen, aid in blood clotting, which is what it mostly consists of. Two plasma proteins, albumin and globulin, help to maintain the colloidal osmotic pressure at 25 mmHg.
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How are inducible and repressible systems similar?a. in both systems the regulatory molecule functions by binding to the operatorb. they are both on by defaultc.they are both off by defaultd. repressor gene is constitutively expressedWhat effect does the presence of ample glucose (increased GLU) have on the amount of lac operon transcription?a. It increases the cAMP concentration which in turn causes a decreased rate of transcriptionb. it decreases the cAMP concentration which in turn causes a decrease rate of transcriptionc.it has no effect on the rate of transcriptiond. none of the choices are correcttRNA processing?a. 3’ ends with an A residue (adenosine)b. Poly A tail added at 3’ endc. Methylated GTP added at 5’ endd. 5’ leader sequence is removed**Some questions may have multiple answers.
The bacterial gene structure has two different types of operons: inducible and repressible. Both genomes have continuous groups of functionally linked genes.
The primary distinction between inducible and repressible operons is that the former are turned off under typical circumstances, whilst the latter are turned on. Additionally, when the inducer binds to the active repressor of inducible operons, the repressor is deactivated, allowing RNA polymerase to bind to the promoter region, whereas when the co-repressor binds to the inactive repressor of repressible operons, the repressor is activated, preventing RNA polymerase from interacting with the promoter region. Additionally, both operons have similar regulatory components that control the regulation of their genes.
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Identify the form carbón takes in the biosphere, hydrosphere geosphere and atmosphere
an animal with two blue stripes, whose mother had an all yellow wig, has eggs. of the animals, 1/2 have blue stripes, 1/8 have light purple stripes, 3/8 are wild type. what is the phenotype of the father of these eggs?
The dominant allele is P (purple), whereas the recessive allele is P (yellow). The genotype Pp and phenotypic purple kernels were shared by both heterozygous parents.
Does purple have a genotype or a phenotype?The phenotype of a trait is how it manifests. Purebred purple flowers on pea plants have a genotype that has two purple alleles, resulting in a phenotype of purple petals.
What is the offspring's phenotype?The genotype of an organism inside a single organism is the particular set of alleles for that gene, and (as was already noted) the physical characteristic linked to that genotype is referred to as the organism's phenotype.
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The coagulation cascade controls blood clot formation in response to blood vessel injury. Thrombin is an enzyme that plays a key role in regulating the coagulation cascade. A simplified model of thrombin’s role in regulating the coagulation cascade is represented in Figure 1.
Argatroban is a competitive inhibitor of thrombin. Which of the following effects on the coagulation cascade is most likely to result from inhibiting thrombin activity with argatroban?
answer choices
The activation of clotting factors will be blocked.
The rate of fibrin formation will decrease.
Thrombin will be converted to prothrombin.
The rate of blood clot formation will increase.
The effect on the coagulation cascade that is most likely to result from inhibiting thrombin activity with argatroban is as follows: The activation of clotting factors will be blocked (option A).
What is enzyme inhibitor?An inhibitor is any substance capable of stopping or slowing a specific chemical reaction or any substance capable of stopping or slowing a specific biological process.
According to this question, Thrombin is an enzyme that plays a key role in regulating the coagulation cascade, which controls blood clot formation. Argatroban is said to be a competitive inhibitor of thrombin.
This means that Argatroban will cause the activities of thrombin in blood clot formation to be decreased or ineffective.
One way this can occur is to block the activation of clotting factors to render the activity of thrombin ineffective.
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choose all statements that are true regarding postsynaptic potentials? multiple select question. they include epsps and ipsps. they depend on the myelination of nerve axons. they are changes in the membrane potential of the postsynaptic terminal of a chemical synapse. they are caused by neurotransmitters.
The statements that are true regarding postsynaptic potentials:
-They include EPSPs and IPSPs.
-They are changes in the membrane potential of the postsynaptic terminal of a chemical synapse.
-They are caused by neurotransmitters.
A postsynaptic potential (PSP) is a brief transition in the electric polarization of a nerve cell's membrane (neuron). The postsynaptic potential is the consequence of the chemical transmission of a nerve impulse at the synapse (neuronal intersection), and it can result in the firing of a new impulse.
Postsynaptic potentials are modifications in the membrane potential of a chemical synapse's postsynaptic terminal. Even though their function is to activate or inhibit action potentials, postsynaptic potentials are not to be confused with action potentials.
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Are tattoos unhealthy?
Tattoos can be unhealthy as they breach the skin, which means that skin infections and other complications are possible.
There are a number of potential dangers associated with tattoos, including scarring, allergic reactions, and skin infections. If you don't go to a licensed tattoo artist or if the wound doesn't heal properly, these risks may get worse.
Reactions to allergies Tattoo dyes, particularly those that are red, green, yellow, or blue, can trigger allergic reactions in the skin, such as an itchy rash at the tattoo site. Even years after getting the tattoo, this can happen.
Acne on the skin. After getting a tattoo, you might get a skin infection. Additional skin issues Around tattoo ink, inflammation can sometimes form in an area called a granuloma. Keloids, which are raised areas caused by excessive scar tissue overgrowth, can also result from tattooing.
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Biodiversity: Do you think that the hot spot strategy is a good one?
Answer:
The "hot spot" strategy is a conservation approach that focuses on protecting areas that are home to a large number of species and a high level of biodiversity. These areas, known as biodiversity hot spots, are often characterized by high levels of species endemism (the occurrence of species that are found nowhere else) and are under threat from human activities such as habitat destruction, deforestation, and climate change.
In general, the hot spot strategy is considered to be a good approach to biodiversity conservation because it focuses on protecting areas that are home to a high number of species and that have a high level of biodiversity. By protecting these areas, it is possible to conserve a large number of species and their habitats and prevent the loss of biodiversity.
However, it is important to note that the hot spot strategy is not a perfect solution and has its limitations. For example, some hot spot areas may be too large or difficult to protect, and it may be challenging to prioritize conservation efforts among different hot spot areas. Additionally, the hot spot strategy may not be sufficient on its own to address the full range of threats facing biodiversity, and other conservation approaches may also be needed.
Overall, while the hot spot strategy is a good approach to biodiversity conservation, it is important to consider the limitations of this strategy and to use it in combination with other approaches to effectively protect and conserve biodiversity.
The hotspots are still crucial to our work for key reasons: The basis of all life on Earth is biodiversity. it focuses on preserving regions with a high concentration of species and biodiversity, the hot spot strategy.
What is a hot spot?There wouldn't be any species if there weren't any air to breathe, food to eat, or water to drink. There wouldn't even be a human society.
Because it focuses on preserving regions with a high concentration of species and biodiversity, the hot spot strategy is generally seen as an effective method for conserving biodiversity.
These regions may be protected, helping to preserve a variety of species and their ecosystems while also halting the loss of biodiversity.
Therefore, hotspots are still crucial to our work for key reasons, the basis of all life on Earth is biodiversity.
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both tobacco smoke and alcohol contain substances that are known as ___
Among the most popular psychoactive substances, alcohol and tobacco are consumed frequently.
The use of the drugs is widespread for a variety of social, cultural, and health reasons, as well as those related to their impact on the body and brain. However, the most dangerous psychoactive drugs also include alcohol and cigarettes. They are major contributors to morbidity and mortality and have a negative impact on both the person and society as a whole. Legal tobacco and alcohol are commonly available in many places, yet the laws governing these products might differ greatly from one nation to the next. The Alcohol (Minimum Pricing) (Scotland) Act 2012 went into force in May 2018. The law was delayed because of a but seeks to minimise excessive drinking and the consequences linked with it Supreme Court challenge by industry bodies.
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How does active site affect enzyme activity?
In their structures, active sites are crucial regions where enzymes bind substrates. They usually bind just specific substrates for particular reactions and are very specialized in nature.
Most metabolic reactions would be substantially slower and unable to occur quickly enough to support life without enzymes. The active site of an enzyme is the area of the enzyme where substrate molecules bind and a chemical reaction takes place in biology and biochemistry.
The amino acid residues that make up the active site are those that catalyze the reaction of the substrate and form brief bonds with it (the binding site) (catalytic site).
Since it directly catalyzes the chemical reaction, the active site, which takes up only about 10 to 20 percent of the volume of an enzyme, is the most crucial component.
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Can you change lanes in an intersection in Florida?
It is not a good idea to change lanes in an intersection, even though it is permitted. In order to change lanes, accelerate a little.
Keep in mind that you are travelling slower than the rest of the traffic since you are moving sideways. Be sure to see both ways before braking or stopping. Instead of crossing the street, proceed through the intersection at the slowest possible pace. Avoid passing or lane changes. This story has drawn criticism from many viewers, so I took my interpretation to the Florida Highway Patrol, who agreed it was accurate. According to the FHP, cars should avoid entering intersections until they can effectively navigate them; blocking a junction is against the law.
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Is a sister chromatid a DNA molecule?
A sister chromatid is a DNA molecule that is made up of two identical copies of the same chromosome. Chromosomes are the genetic material found in the nucleus of the cell, and sister chromatids are formed when the chromosomes replicate during cell division.
Sister chromatids are identical copies of the same chromosome, which are held together by a specialized protein structure known as a centromere. The centromere is responsible for the proper segregation of the sister chromatids during cell division. The sister chromatids are made up of two strands of DNA, which are connected to each other by a protein called a histone. Each strand is held together by hydrogen bonds, which are formed between the base pairs of the DNA.
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Hello, Please answer these questions I rwally need them by today if anyone can help!!
1. Fill in the blanks below with the correct words to make a true statement:
Photosynthesis is a series of chemical reactions that use energy from the sun to convert water and _____________ into glucose sugar and _____________.
2. Fill in the blanks below with the correct words to make a true statement:
Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule _________. Aerobic respiration requires the presence of Oxygen___________ and releases water and _________________ as waste products.
3. In the space below, write at least one complete sentence briefly describing why we need cellular respiration to survive.
Please if you do know the answer to this please replay i really really need them by today... Thank you!
Photosynthesis is a series of chemical reactions that use energy from the sun to convert water and Carbon-dioxide into glucose sugar and Oxygen.
Cellular respiration is a series of chemical reactions that convert the energy in food molecules into energy stored in the molecule C6H12O6. Aerobic respiration requires the presence of Oxygen and Hydrogen releases water and carbon dioxide as waste products.
Cellular respiration serves the straightforward objective of giving cells the energy they require to function. Food would be completely useless if living beings couldn't obtain the energy they required from it. No matter the type or quantity of nourishment, all living beings will eventually perish.
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How do I prepare for tattoo pain?
Schedule the tattooing session as early in the morning as possible so that your body is more effective before preparing for a tattoo.
Many tattoo artists and physicians disagree on what type of medicine, if any, you should take if you wish to get your body tattooed. Some physicians will counsel you to avoid them since they may cause even greater pain, while others will tell you that certain medications should be fine.
Most doctors agree that taking Tylenol or Paracetamol shortly after getting your new tattoo is the safest option. However, you should take it at least 30 minutes before your tattoo appointment.
All experts agree that you should never take a pain medicine that contains aspirin, as aspirin is responsible for blood vessel weakening. Aside from aspirin, it is also not recommended that you consume Ibuprofen before your tattoo session.
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A living cell requires an amount of energy (X) that is produced by the oxidation of 5 g of glucose, to provide the cell with the same amount of energy (X) in the absence of glucose, it should use an amount of fatty acids equal about ……..
3
5
10
15
Answer:
3. Fatty acids produce more ATP than glucose.
Proteins are called the building blocks of the body. They're needed for growth and development and to repair the normal wear and tear of the body.
The body needs to digest proteins to make them available to fulfill these functions. Arrange the steps of the digestion of proteins in the correct order.
Answer:
The order of steps for the digestion of proteins will be;
In mechanical digestion, the teeth grind food and break it in to smaller parts.
Churning and the enzyme pepsin break down protein in the stomach
The pancreas releases enzymes trypsin and chymotrypsin
Tryspsin and chymotrypsin act on the proteins to break them down in the duodenum
Amino acids are absorbed by the capillaries in the Jejunum and lastly
The amino acids enter the blood stream and are circulated throughout the body.
Explanation:
How long does a monggo plant grow?
The growth cycle of the Monggo plant is approximately 100 days. Monggo seeds are the white bean sprouts that you've probably seen in supermarkets and restaurants.
They go by the names mung beans and moong, but their scientific name is Vigna radiata. Planting mung beans near the end of spring is ideal because it takes them about three months to mature from seed. May is frequently an excellent time to sow after the temperature hits and remains above 65°F (18.3°C).
These are a warm-season crop, and if it gets too cold, the larger seeds will struggle to germinate. Plant seeds every two weeks if you want a continuous harvest after they are fully grown.
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when people sleep, their metabolic rate is about 2.6×10−4c/(s⋅kg).
The calories metabolized by a 75 kg person in the duration of 8 hours sleep is: 561.6 C.
Calories are the unit of energy present inside the body which is obtained from the breakdown of food.
In the question it is given that:
Metabolic rate (A) = 2.6×10−4 C / (s⋅kg)
Mass of the person (m) = 75 kg
Time duration (of sleep), t = 8 hours = 3600 seconds
The formula used for this will be:
A = Q / (m.t)
where Q = calories metabolized. Hence the formula can be rewritten as:
Q = A.m.t
Therefore, Q = 2.6×10−4 C / (s⋅kg) × 75 kg × 3600 sec
Q = 561.6 C
The given question is incomplete, the complete question is:
When people sleep, their metabolic rate is about 2.6×10−4 C / (s⋅kg). How many nutritional Calories does a 75-kg person metabolize while getting a good night's sleep lasting 8.0 hr?
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A geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation spastic (sps) and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding spastic is linked to the recessive gene for vestigial wings (vg).
She crosses a fly homozygous for spastic and vestigial traits with a fly homozygous for the wild-type traits and then uses the resulting F1 females in a testcross.
Write out the experimental design for this test cross and indicate the progeny genotypes and expected proportions of these genotypes if the loci are completely linked.
The experimental design for this test cross -SpsspsVgvg and spsspsvgvg offspring will only be produced by complete linkage in proportions of 0.50 for each.
The way this experiment is set up means that depending on whether the genes are completely linked, partially linked, or unlinked, we will get different results. Even if the genes are linked and crossing over occurs, the parental cross will always take place in the same way in all of these situations, as the given parents of SpsSpsVgVg and SpsSpsVgVg will only ever produce SpsVg and SpsVg gametes, respectively. We now have the following cross between them as a result:
Gamete SpsVg SpsVg
spsvg SpsspsVgvg SpsspsVgvg
spsvg SpsspsVgvg SpsspsVgvg
SpsspsVgvg, we can see that every F1 offspring will be double heterozygous. These alleles will all assort independently, assuming there is no linkage. This will produce SpsVg, Spsvg, spsVg, and spsvg gametes in equal proportions to one another in order to cross with those of the tester, spsspsvgvg, which will only produce spsvg gametes in the subsequent cross:
Gamete SpsVg Spsvg spsVg spsvg
spsvg SpsspsVgvg Spsspsvgvg spsspsVgvg spsspsvgvg
Here, we can see that there is no linkage that will produce the same proportion of four distinct genotypes and phenotypes. On the other hand, we will observe SpsVg and spsvg gametes as non-recombinants from the F1 individual, as this is how they were inherited from her parents, and we will also observe SpsVg and spsVg gametes with a frequency that is proportional to the distance between the genes. However, if the genes are only partially linked and are situated some distance apart, we will observe SpsVg and spsvg gametes as We will get the same genotypes and phenotypes from this as we did from the unlinked cross, but the SpsspsVgvg and spsspsvgvg offspring will be much more common than the other offspring.
The third possibility is that these genes are completely linked, with no space between them, and that there will be no recombinant offspring as a result. This indicates that the F1 mother produces only SpsVg and spsvg gametes, which result in the following offspring containing the tester's spsvg gametes:
Gamete SpsVg Spsvs
spsvg SpsspsVgvg spsspsvgvg
Here, we can see that complete linkage will only produce SpsspsVgvg and spsspsvgvg offspring in proportions equal to 0.50 for each.
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Is a homologous pair of chromosomes a tetrad?
The homologous chromosome pairs, also known as bivalents or tetrads, line up along the metaphase plate in a random order during metaphase I of meiosis I.
They are known as homologous pairs of chromosomes. When homologous chromosomes line up next to one another during meiosis, they create a tetrad. Two homologous chromosomes make into a tetrad, which has four sister chromatids altogether and is held together by a feature known as the chiasmata. When two homologous chromosomes that have already duplicated their DNA link up, they form a tetrad. The main distinction is that a tetrad consists of two homologous chromosomes that resemble an X rather than an I. A pair of two chromosomes, usually one from the mother and one from the father.
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database forms structure data input to ensure data ________.
Input, Display, A database is a structured collection of information. A database, as opposed to having all the data in a list in random order, provides a structure to organise the data.
A database table is one of the most common data structures. A database table is made up of rows and columns. A two-dimensional array is another name for a database table.
A form is a database object that lets you enter, edit, and display data from a table or query. A simple form typically includes fields such as First Name, Last Name, E-mail Address, Home Phone, Mobile Phone, Date of Birth, and Address.
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How can heavy breathing and rapid heart beating help an organism that feels like it is in a
harmful or scary situation/environment?
During the flight or fight response of the body, heavy breathing and rapid heart beating help an organism that feels like it is in a harmful or scary situation/environment by providing the body tissues and cells with more oxygen for ATP production.
What is the flight or fight response of the body?The flight or fight response in the body is the response of the body that occurs when the body is under perceived or real danger or stress.
The system of the body that is responsible for the flight or fight response is the autonomic division of the nervous system specifically the parasympathetic division.
During the flight or fight response of the body, the following changes occur in the body:
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What are mutations in gametes called?
Answer:
Mutations in gametes is called germline mutations.
All organisms process nutrients. Which sentence best describes how plants and animals process nutrients similarly?A. Energy from sunlight produces nutrients.B. Nutrients increase the strength of cell walls.C. Cells break down nutrients into usable forms.D. Nutrients are broken down by the digestive system.more
Answer:
C. cells break down nutrients into usable forms
Explanation:
Plants and animals process nutrients similarly because cells break down nutrients into usable forms for both of them. And I took the quiz.