Answer:
Explanation:
The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.
If 35% of the bases in a region of the mouse genome are cytosine, what percentage in that region are adenine?
A. 15%
B. 20%
C. 30%
D. 35%
E. 40%
Answer:
A. 15%
Explanation:
DNA is composed of four nitrogen bases: Adenine (A), Thymine (T), Guanine (G), and Cytosine (C). Chargaff's rule of base pairing states that A always pairs with T, while G always pairs with C. The total distributed percentage of the four 4 nitrogen bases must be equal to 100%. In this case, the C content is 35%, thereby G=35% (i.e., equal to C content), while the remaining 30% must be equally divided between T=15% and A=15%.
Please please answer if you get it right I will mark brainliest
How can competition contribute to evolution through natural selection?
Answer: During competition, organisms that have favorable traits for this task will survive and are said to be selected. These organisms will reproduce and pass on those traits to their offspring. Thus, the frequency of organisms with those traits will increase
Explanation: In Darwin's theory on the mechanism of evolution, competition among living things is viewed as a major part of the “struggle for existence” and therefore as a basis for natural selection (Darwin 1872).
Why is meiosis important in maintaining genetic diversity?
Question 6 options:
A Meiosis creates diversity by cutting each chromosome exactly in half.
B The two different chromosomes of the organism producing the sex cell (egg or sperm) are mixed up during crossover, creating a new combination of alleles.
C It creates sex cells (eggs or sperm) that have exactly the same alleles (version of a gene) as the parents.
D The chromosomes in meiosis are copied so they are exactly the same as the organism producing the gamete, except they have just one copy.
Answer:
We now know that meiosis is the process of chromosomal reduction which allows the production of haploid germ cells necessary for sexual reproduction. Meiosis is furthermore important for its role in enabling genetic diversity and facilitating the repair of genetic defects through recombination.
Explanation:
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Meiosis is a specialized form of a cell division in which number of chromosomes is reduced to half. The reduction in chromosome number is achieved by one round of DNA replication and two rounds of chromosome segregation.
Meiosis produces genetic variation by the process of recombination.Recombination occurs when two molecules of DNA exchange pieces of their genetic material. The process of recombination occurs during the prophase stage of meiosis I. In meiosis, crossing over occurs between the non-sister chromatids in a homologous pair (one from each parent) of chromosomes.The correct answer is option B. The two different chromosomes of the organism producing the sex cell (egg or sperm) are mixed up during crossover, creating a new combination of alleles.
Other options-
A. Meiosis creates diversity by cutting each chromosome exactly in half - incorrect .In meiosis the chromosome number is reduced to half.
C. It creates sex cells (egg or sperm) that have exactly the same alleles (version of a gene) as the parents-incorrect. The sex cells produced are not genetically identical to the parent cell.
D. The chromosome in meiosis are copied so they are exactly the same as the organism producing the gamete, except they have just one copy-incorrect. In meiosis the chromosomes are not exactly copied.
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The function of an enzyme depends upon the enzyme's shape and
Answer:
The activities of enzymes also depend on the temperature, ionic conditions, and the pH of the surroundings.
Explanation:
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Thermal specialists versus thermal generalists and the idea of thermal niche
Answer:
elaborate
Explanation:
Help due tomorrow what is it please help??
Is the following sentence true or false? The apparent change in the
frequency and wavelength of a wave as it moves toward or away from an
observed is know as the Doppler effect.
True or False
Answer:
True
Explanation:
Doppler's effect is the apparent change in the wavelength and frequency of a wave as it moves towards or away from an observer.
The relative motion between the observer and the source causes changes to the wavelength and frequency. This effect is the doppler's effect. When a source moves closer, the frequency of the wave increases. For example, we see that effect of water ripples when a stone is dropped in still water.Why do you think in the table below, Adenine and Thymine have almost the same number – but not exactly?
Nucleotide
# found in genome
Adenine
701,234,142
Guanine
803,127,160
Cytosine
803,127,162
Thymine
701,234,146
Since transport of materials in and out of the cell can only happen at the cell's surface, what happens as cells get larger? How does this impose a limit on cell size?
Answer:
The surface area/volume ratio will decrease
Explanation:
How does this impose a limit on cell size?
Because the ability of a cell to exchange substances with its environment is proportional to its surface area.
Hence, if surface area/volume decrease and get too small, surface area is not sufficient to take up substances needed to support metabolism or get rid of wastes.
Indicate whether a solution will have more OH– or H+ if the pH value of the solution
is 10.
The solution with a pH value of 10 will have more OH- ions.
In chemistry, pH is described as a scale that is specifically utilized to specify the basicity or acidity of an aqueous solution. The pH of different solutions are described as follows:
Acidic solution: If a solution has pH<7, then the solution is acidic and tend to have more H+ ions than OH- ions Neutral solution: The solution is neutral when pH=7 and the concentration of H+ and OH- ions are the same Basic solution: If a solution has pH>7, then the solution is Basic and tend to have more OH- ions than H+ ionsThus, in this case, pH>7 and thus we can conclude that the solution will have more OH- ions than H+ ions.
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How are rocks and air alike? A. People use them to build things. B. They are on the ocean floor. C. They are natural resources. D. People need them to live.
Answer:
i think its c
Explanation:
Answer: C.
Explanation: Natural resources are resources that exist without any actions of humankind. Basically materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain. Rocks are a source of natural resources and so is air. If the answer is not correct, then it must be D.
which sensory receptors are involved in hearing
Answer:
The cochlea is filled with two fluids (endolymph and perilymph), and inside the cochlea is the sensory receptor, the Organ of Corti, which contains hair cells, or the nerve receptors for hearing.
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Mechanoreceptors are involved in hearing, which transmits the signals from external stimuli through mechanical ion-gated channels.
What is the structure of the ear?The organ of the Corti on the basilar membrane has hair cells that are involved in the sensory mechanism for hearing.
In the inner ear, there are six receptors (cochlea, two otolith organs, and three semicircular canals) which make a transduction unit consisting of hair cells.
In these receptors, external stimuli transmit the signal through the mechanically gated channel, external stimuli are touch, pressure, and hearing.
This processed signal to the brain by the neurons to hear the sound, and all the signal accumulate through the primary sensory receptors which are hair cells in the ear.
Therefore, mechanoreceptors are involved in hearing.
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The given question is incomplete, so the most probable complete question is,
which sensory receptors are involved in hearing?(1 point) responses thermoreceptors thermoreceptors photoreceptors photoreceptors chemoreceptors chemoreceptors mechanoreceptors
please help. i am confuse and trying to figure out
Answer:
your right
Explanation:
u clicked on the right answer
⚠️⚠️⚠️Describe what occurs between water molecules in hydrogen bonding. Explain where the hydrogen bond happens.
Which of the following insulate against the cold? (Choose one: lipids, carbohydrates, nucleic acids, proteins).
Answer:
lipids
Explanation:
As time progressed and technology improved, microscopes were able to give clearer images of extremely tiny objects. How did this development advance the cell theory?
please be sure that you include at least 3-4 full sentences
Answer: plz give brainlist
Robert Hooke is accredited with observing the first cells in 1665. At that time, Robert Hooke used a microscope to look at cork cells.
In 1670, Antoni van Leeuwenhoek was accredited with being the first scientist to discover pond life. He used lenses to make the discovery.
Robert Brown (1773-1858) used a microscope to discover the nucleus.
_________ is required for energy given to proteins in the phospholipid layer.
a.Anaerobic
b.Aerobic
c.Active transport
d.Turgor
e. Passive transport
Answer:
A
Explanation:
Active transport is required for energy given to proteins in the phospholipid layer (Option c).
Active transport is a type of transport across a cell membrane that requires energy, usually in the form of ATP, to move substances (either molecules or ions) against a gradient of concentration.
Conversely, passive transport refers to the movement of substances across a membrane in favor of a concentration gradient, which does not require energy.
Active transport is mediated by transporter proteins known as carriers and/or pumps.
In conclusion, active transport is required for energy given to proteins in the phospholipid layer (Option c).
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What is the answer to this please help
Answer:
C The correct sequence of the transfer of information in most organisms is DNA to RNA to protein.
Explanation:
Gene expression involves the flow of information from DNA molecules to the formation of proteins. Information first flows from DNA molecules to RNA through a process called transcription. Transcription is the first step of gene expression in which an RNA especially the mRNA is synthesized from a DNA molecule by RNA polymerase enzyme. Then the synthesized mRNA is taken to the cytoplasm where it undergoes the translation process to form proteins.
Which star may have once been similar to our sun in mass and luminosity?
A. Deneb
B. Spica
C. Procycon b
D. Proxima centauri
Answer:
c. procycon b :)
Is it possible for it to rain at 0° F? (not snow)
im pritty sure no but my friend says yes somthing called frezzing rain sooooo
The area where an organism gets everything it needs is called its
Answer:
D
Explanation:
The place where an organism lives and that provides the things the organism needs is called ist habitat...
My parents jus order the ps5 they just told.me it will be here next weel
Answer:
U IS LUCKY A F
Explanation:
HOPE U ENJOY IT
Answer:
i also have a ps5
Explanation:
Collecting wild specimen and allowing them to reproduce in an environment away from predation can also be called a
Your answer:
Answer:
Captive breeding program
Explanation:
A captive breeding program can be defined as the process of collecting wild specimen and allowing them to reproduce in an environment away from predation. This is an important part of saving endangered species. Specimens of such species are bred in zoos and similar facilities in order to build a healthy population. Sometimes, these species are successfully reintroduced back into the wild. Examples of animals that were successfully saved like this are the California condor, black-footed ferret, golden lion tamarin, and red wolf.
14. All the animals in Jurassic Park were_____ to control the populations.
Answer: Female
Explanation:
Females cant mate but somehow “life found a way”
3.The two phases of photosynthesis are _____ reactions and _____ reactions._____. DOC 1
a.)glucose-dependent
B)glucose-independent
C.)light-independent
d.)light-dependent
Answer:
c
Explanation:
needed for
photosynthesis
- Which pair of features is correct for both a human liver cell and an Escherichia coli bacteria cell?
Answer:
contains DNA associated with protein, contains naked DNA
Explanation:
E coli are prokaryotes with naked DNA found in the cytoplasm. In contrast, human liver cells contain DNA present in a nucleus, a membrane-enclosed organelle. The DNA is associated with proteins (forming a structure called chromatin).
Human liver cells contain mitochondria, but E Coli do not contain membrane-bound organelles.
Eukaryotic ribosomes are larger than prokaryotic ribosomes. Eukaryotic ribosomes are 80S in size, prokaryotic are 70S in size.
5. The image above is an example of which boundary?
a. Transform boundary
b. Convergent boundary
Divergent boundary
d. All of the above
Answer:
Divergent
Explanation:
Answer:
Im smart so the answer is "blah blah blah" saying the correct right answer
Explanation:
7. China was the largest emitter of greenhouse gases in 2008. TRUE or FALSE:
Answer:
True
Explanation:
Googled It
...............
Answer:
true
Explanation:
Which is NOT Part of the Cell Theory
A. All living things have cells
B. Cells must have complex interworking parts
C. All cells reproduce
D. Cells are the smallest unit that perform life functions
Answer: B
Explanation:
Cells do not have to have complex interworking parts, they just have to do the job for the body. The answer is B.
modeling DNA Mutations Table
base sequence of mutated strand
Answer: Only a single codon in the gene sequence is changed in base substitution mutation. Although a base substitution alters only a single codon in a gene, it can still have a significant impact on protein production.
Explanation: