Answer:
TRUE!
Scientist use dead cell embryos to produce living cells
All cells living or dead cannot produce new living cells. Only the living cells can produce new cells. Therefore, the given statement is false.
What is Cell division?Cell division is the process by which a parent cell divides into two new daughter cells. Cell division usually occurs as a part of a larger cell cycle in which the living cell grows and replicates its chromosome before undergoing division.
Cell division occurs in living cells through mitosis and meiosis. The cell division occurs through karyokinesis and cytokinesis. Cell division is a part of the cell cycle. Cell cycle is divided into different phases such as G1 phase, S phase, G2 phase, and M phase.
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Answer:
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Explanation:
tgffgb t cook ha ha ha oh g civic guy the h
Pick one of the body parts shown in Sammi's model. How would a disease or injury to this organ affect the process modeled? How would it affect the body as a whole
Answer:
the heart is what makes every moving part working inside our body even though the brain is the one who tells them or gives them signals to work. the heart is what keeps them alive and if the heart takes any kind of negative damage the would not take care of everything it's supposed to.
Explanation:
Hope this helps
The body part picked is ; The Heart
An injury or disease to the heart will stop the whole body functioning and the process modeled will be distorted
The heart in the body is equivalent to the engine of a car, The heart pumps oxygen carrying blood cells into all the organs and without this oxygen carrying blood cells the whole body will stop functioning ( i.e. The organs will be dead ).
An injury or disease to the Heart will negatively affect the distribution rate of blood to all parts of the body and this will negatively affect the overall wellbeing of the body and this will also negatively affect the process been modeled as well.
Hence we can conclude that The body part picked is ; The Heart , and An injury or disease to the heart will stop the whole body functioning and the process modeled will be distorted
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LIQUID DENSITY COLUMN
-Olive Oil
-Vegetable Oil
please help me with this question thanks:)
Answer: Vegetable oil
In a given strand of dna the number of thymines
A. Is same as the number of uracils
B. Is double the number of guanines
C. Is double the number cytosines
D. Is the same as the number of adenines
Plz answer ASAP
A diagram of the human digestive system is shown below removing which organ would have the smallest impact on the digestion absorption and elimination
Answer:
Esophagus
Explanation:
esophagus provides a passway between the mouth and stomach otherwise it has no other major function in digestion, absorption and elimination.
Which statement is true of the many parts of the biosphere?* O A. Each part includes salt water. O B. Each part is completely unique. O c. Each part is isolated from the others. O D. Each part is connected to all the others.
Answer:
The answer is D Each part is connected to all the others
Explanation:
While each part is different they interact with eachother to exchange matter and make life possible :) Hope this helps!
The true statement among the given options of the many parts of the biosphere is option D. Each part is connected to all the others.
The biosphere is the ecosphere consist of air, land, water, and rocks all parts where life is found or possible. It is made up of parts of all ecosystems where life exists on earth.
The biosphere has three major parts that interact with one another where life is found:
The lithosphere - the outermost layer of the crust of the earth,The hydrosphere - all the water bodies, ponds. ocean, rivers, and lakes,The atmosphere - includes gases and the air of the earth.All these parts are interconnected with other parts of the biosphere there are no isolated parts.
Thus, the correct answer is - D. Each part is connected to all the others.
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15. (02.05 LC) What evidence suggests that global climate change is causing the oceans to get warmer? (3 points) A. Decreased air temperatures B. Decreased storm strength C. Increased sea levels D. Increased surface ice
Answer:c
Explanation:
Both strands of the DNA double helix contain nitrogenous bases held together by hydrogen bonds. In DNA, the sequence of nitrogenous bases varies widely. What is the significance of the nitrogenous bases?
A. They determine the amino acids in the proteins synthesized.
B. They prevent mutations from occurring in the process of DNA replication
C. They help complete the sugar-phosphate backbone of DNA molecules.
D. The amount of adenine and cytosine determines the length of the gene on a DNA molecule.
Answer:
A
Explanation:
Essentially, in the process of protein synthesis, there is first transcription where mRNA is synthesized off of a DNA strand with complementary nitrogenous bases. After processing occurs (in basic terms the mRNA is literally processed) and the mRNA strand leaves the nucleus, it attaches to a large and small ribosomal subunit (a ribosome) where translation occurs. The gist of it is when the mRNA strand is being read by the ribosome. tRNA will come over and bind temporarily bringing with it a specific amino acid, starting the formation of the polypeptide/amino acid chain. Nitrogenous bases play into this as the sequence of the nitrogenous bases is what determines what tRNA will bind onto it which determines which amino acid is brought. More specifically, this deals with the codons of the mRNA and the corresponding anticodons with the tRNA, which is a bit of a more specific topic.
The nitrogenous bases help complete the sugar-phosphate backbone of DNA molecules. The correct option is C.
What is DNA?DNA, also renowned as deoxyribonucleic acid, is a complex molecule that includes all of the information required to construct and retain a lifeform.
DNA is found in the cells of all living things. In real sense, as in almost every cell in a multicellular organism contains the entirety of the organism's DNA.
DNA is composed of chemical key components known as nucleotides. These building blocks are composed of three components: a phosphate group, a sugar group, and one of four different types of nitrogen bases.
Nucleotides are linked together in chains, with the phosphate and sugar groups alternating.
Thus, the correct option is C.
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Based on the data in the graph, how are cyanobacteria responsible for the rise in atmospheric oxygen? State your claim, then make sure to use evidence from biological processes and data from the graph to support your claim.
Answer:
They perform photosynthesis, releasing oxygen into the atmosphere as a by-product.
Explanation:
Around the time that cyanobacteria appear around 3.2 billion years ago, the oxygen levels rise sharply.
Cyanobacteria are photosynthetic organisms. They possess the photosynthetic pigment chlorophyll, meaning they can trap light energy and use it to power chemical reactions to synthesise glucose. They convert carbon dioxide and water into sugar, releasing oxygen into the atmosphere as a byproduct. This causes oxygen levels to rise.
Answer:
Cyanobacteria are microbes that live primarily in seawater. They are believed to have been the first organisms on Earth to perform oxygenic photosynthesis. In this process, they produce organic carbon, the building blocks of life's molecules, and release oxygen gas (O2).As oxygen photosynthesis starts,that's when the first O2 producing of cyanobacteria occurs.The graph reaches a peak at Cambrian explosion.
How big of an advantage does a variant of a gene have to give to start becoming more common in a population?
1. Greater than 0%
2. Greater than 5%
3. Double
Answer:
The correct answer is 1. Greater than 0%. An allele to become common must have a frequency of at least 0.005%
Explanation:
A polymorphic gene has more than two alleles. The more alleles there are in a population, the more polymorphic the gene is.
In a polymorphic gene, the allelic frequency of the most common allele must be minor of 99%, while the less common allele must have an allelic frequency superior to 0.005%. If any allele does not reach this frequency in the population, it is not considered to be common. In fact, it is considered to be a rare allele.
What organelles produce spindle fibres. What will these spindle fibres eventually be used for?
Answer:
Centrosome
Explanation:
Spindle fibres pull the chromosomes apart.
Answer:
The organelle that produce spindle fibers are centrosome,
The main function of the spindle fibers is to pull the chromosomes apart.
what effect would constriction of the blood vessels have in the body
Answer:
higher blood pressure
Explanation:
when the vessels constrict they get smaller therefore in order for the blood to be pumped through the body the heart would have to work harder resulting in a higher blood pressure
Answer:
increased blood pressure resulting in risk of heart attack
When does the Northern Hemisphere receive the fewest direct rays from the Sun?
during the fall equinox
during the winter solstice
O during the spring equinox
during the summer solstice
0
Answer:
during the winter solstice is the correct answer
Explanation:
I took the test
During the winter solstice, the Northern Hemisphere receive the fewest direct rays from the Sun.
When does the Northern Hemisphere receive the fewest direct rays from the Sun?During the winter solstice, the sun's rays strike the Northern Hemisphere at the smallest angle which results in the fewest number of daylight hours in Northern Hemisphere.
So we can conclude that during the winter solstice, the Northern Hemisphere receive the fewest direct rays from the Sun.
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should zoos exist? Yes or no ?
3 sentence
All of the following events occur during prophase in mitosis except
WILL MARK BRAINLIEST
A. Condensation of DNA
B. Crossing over
C. Pairing of chromosomes
D. Spindle formation
All of the following events occur during prophase in mitosis except crossing over (Option B)
Mitosis can be divided into four phases: prophase, metaphase, anaphase, and telophase.During prophase, the chromatids condense into chromosomes, thereby making them visible. The mitotic spindle is a structure composed of microtubule proteins that segregate the chromosomes in mitosis. This structure is formed in prophase.In Prophase homologous pairs of chromosomes are paired together. In metaphase, these chromosomes are lined up at the equator of the cell and sister chromatids are attached to the spindle fiber.Crossing over (or recombination) is the exchange of genetic material between non-sister chromatids that occurs during prophase I of meiosis.In conclusion, condensation of DNA, the pairing of chromosomes and, spindle formation occur during prophase, whereas crossing over occurs in prophase I of meiotic cell division (Option B).
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Describe what happens in your central nervous system when you prepare and eat breakfast. Start with objects in the environment and be specific.
Answer:
CNS controls eating by homeostatic mechanisms that interact with different cognitive control systems (e.g., memory, reward, attention, etc)
Explanation:
In the brain, eating control is modulated by different systems:
1- Homeostatic control: the hypothalamus plays a key role by controlling both the appetite and food intake
2- Attention: the parietal and visual parietal cortices are involved in sensory perception and integration
3- Emotion and memory: amygdala and hippocampus
4-Cognitive control: the prefrontal cortex (i.e., executive functions)
5-Reward: associated with the functioning of the striatum
In the first place, external signals such as, for example, neurotransmitters and hormones, are received by the hypothalamus that interacts with different systems (reward, emotion, memory) in order to achieve a homeostatic control of eating. Neuronal stimulation (for example, when we view foods), is achieved by the supply of oxygenated hemoglobin.
Animals store most of their excess energy reserves as ____.
Answer:
Lipids (Fats)
Lara and Tim took different routes to travel from Point A to Point C. Lara took the route along A, B, and C. Tim took the route along A, E, D, and C. Their routes with distances and times are shown.
A 5 sided figure ABCDE is shown. Point A is labeled Start and Point E is labeled End. AB is 6 miles and 1.5 hours, BC is 2 miles and 1 hour, CD is 6 miles and 1.5 hours, DE is 4 miles and 1.5 hours, and AE is 2 miles and 0.5 hour
Which person's average speed is greater?
Lara's, because her average speed is twice Tim's average speed
Lara's, because her average speed is three times Tim's average speed
Tim's, because his average speed is 0.6 miles/hour greater than Lara's average speed
Tim's, because his average speed is 0.2 miles/hour greater than Lara's average speed
Answer:
Tim's, because his average speed is 0.2 miles/hour greater than Lara's average speed
Explanation:
Tims was greater than Lara's with an average speed of 0.2 miles/hour.
Hope this helps!
Answer: Tim's, because his average speed is 0.2 miles/hour greater than Lara's average speed
Explanation:
how i know is i got a brain and i got this question right :)
THIS IS NOT A QUESTION
Here is my unit 2 review guide if anyone needs it for biology!
Answer:
thanks homie
Explanation:
During the cell cycle, DNA replication must occur?
A) Before the cell divides
B) Immediately following
cytokinesis
C) During mitosis
D)All of the Above
amino acid structure: the only part of the amino acid structure that varies between the amino acids and makes each type unique is
Answer:
The side groups are what make each amino acid different from the others. Of the 20 side groups used to make proteins, there are two main groups: polar and non-polar. These names refer to the way the side groups, sometimes called "R" groups, interact with the environment.
Explanation:
Mining companies bring workers from different places. This increases business in the town nearest to the mine.
Which type of impact is being described in this scenario?
A)
atmospheric impact
B)
biological impact
C)
ecosystem impact
D)
social impact
E)
topographic impact
Answer:
I believe this is C) ecosystem impact
Explanation:
The interactions between human population dynamics and the environment have often been viewed mechanistically. This review elucidates the complexities and contextual specificities of population-environment relationships in a number of domains. It explores the ways in which demographers and other social scientists have sought to understand the relationships among a full range of population dynamics (e.g., population size, growth, density, age and sex composition, migration, urbanization, vital rates) and environmental changes. The chapter briefly reviews a number of the theories for understanding population and the environment and then proceeds to provide a state-of-the-art review of studies that have examined population dynamics and their relationship to five environmental issue areas. The review concludes by relating population-environment research to emerging work on human-environment systems.
Why are stem cells important to multicellular organisms?
Answer:The fabulous ability of an embryo to diversify and of certain adult tissues to regenerate throughout life is a direct result of stem cells, nature's gift to multicellular organisms.
Explanation:
When the isotonic saline solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level drops. Based on this information, what can be said about these two solutions?
Answer:
The new solution has a higher concentration than the isotonic saline solution
Explanation:
Here, we want to deduce what has happened in the question.
We are told that the level of the isotonic saline solution dropped because it was connected an unknown solution using a semipermeable membrane.
Since the level of the solution dropped, then it must have occurred that there has been the loss of some of the molecules of the solution.
What has occurred is the process of Osmosis
Osmosis simply involves a movement through a semipermeable membrane of solvent molecules due to the fact that the previous solution is of lower concentration than the present one.
So what we can see here is that there has been a movement due to osmosis as a result of the fact that the new solution has a higher concentration than the former one
What are the two reasons that there are exceptions to Mendelian heredity?
Answer:
Incomplete Penetrance. Some genes are incompletely penetrant.
Sex-limited genes are ones that are inherited by both men and women but are normally only expressed in the phenotype of one of them. The heavy male beard is an example.
Pleiotropy. A single gene may be responsible for a variety of traits.
Stuttering Alleles.
Explanation:
write the difference between Power and energy
Answer: Energy is what makes change happen and can be transferred form one object to another. Power is the rate at which energy is transferred.
For what can we use the doppler effect to deduce in astronomy
A. the shape of orbital path of an object
B. whether the object is traveling toward or away from us
C. the Chemical composition of the objects
D. the type of spectrum the object emits
Answer:
B
Explanation:
Whether the object is travelling toward or away from us for PLATO.
Answer:
b whether the object is traveling toward or away from us
Explanation:
i just got the answer right on the test
Which of the following is a reason for the genetic variability from sexual reproduction?
A. The more variety there is in the gene pool, the less arrangements in the population.
B.The genes that are “dealt” to the offspring from their parents are by systematic event.
C. Offspring have the same gene combinations of either of their parents.
D. Members of a species choose mates, creating different combinations of genes.
Please help. This is due today.
Answer:
the answer is d opinion
The fascia found on the surface of the muscle is called the superficial fascia.
True
False
Match the following terms describing the physical/mecahnical events with the correct phases of the cardiac cycle. Each phase may be used more than once.Question Selected MatchAll 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.The maximum amount of blood is in the ventricles at the end of this phase.The pressure in the ventricles is higher than in the atria, but lower than in the arteries, during this phase.The semilunar valves are open and the AV valves are closed during this phase.The atria contract at the end of this phase.The pressure in the ventricles is higher than the pressure in both the atria and the arteries during this phase.Systole begins with this phase.All Answer ChoicesA.ventricular ejectionB.ventricular fillingC.isovolumetric relaxationD.isovolumetric contraction
Answer:
1. Isovolumetric relaxation.
2. Ventricular filling.
3. Isovolumetric contraction.
4. Ventricular ejection.
5. Ventricular filling.
6. Ventricular ejection.
7. Isovolumetric contraction.
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole: in this stage, the ventricles is relaxed and would be filled with blood. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.The following terms describe the physical or mecahnical events with the correct phases of the cardiac cycle in mammals (human beings).
1. Isovolumetric relaxation: All 4 cardiac valves are closed and all 4 chambers are relaxed during this phase.
2. Ventricular filling: The maximum amount of blood is in the ventricles at the end of this phase.
3. Isovolumetric contraction: The pressure in the ventricles is higher than in the atria, but lower than in the arteries, during this phase.
4. Ventricular ejection: The semilunar valves are open and the AV valves are closed during this phase.
5. Ventricular filling: The atria contract at the end of this phase.
6. Ventricular ejection: The pressure in the ventricles is higher than the pressure in both the atria and the arteries during this phase.
7. Isovolumetric contraction: Systole begins with this phase.