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gavmur [86]
2 years ago
15

The size of your brain continues to grow your entire life. A. true B. false

Biology
2 answers:
Reil [10]2 years ago
7 0
False
the human bran continues to grow until it reaches its peak size
Galina-37 [17]2 years ago
5 0

Answer: B

Explanation:

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In colorectal cancer, some tumor suppressor genes are inactive. This is an important factor resulting in uncontrolled cell divis
tresset_1 [31]

Answer/Explanation:

(1) a mutation in the coding region, resulting in an inactive protein

To check to see if there is a mutation, you could extract the DNA from the cancer cells and then perform PCR to amplify the gene of interest. You could then perform sanger sequencing and compare the sequence to the normal gene to see if a mutation is present. To test the effect of the mutation, you would want to see if an active protein has been formed.

To see if a normal sized protein has been formed, you could perform a western blot, comparing the protein band to the WT protein band. If the protein is absent or much smaller, it is likely not a functional protein.

(2) epigenetic silencing at the promoter of the gene, resulting in reduced transcription.

To check for changes in the epigenetic landscape of the promoter, you could perform chromatin immunoprecipitation by extracting the chromatin from the tumour cells and using antibodies for different chromatin marks to see what has changed between the normal cells and the tumor cells. E.g. H3K9me3, H3K27me3. You would perform a pull down with the antibody of interest and then PCR for your promoter to specifically look at changes at that gene compared to normal cells. To test DNA methylation, you could perform bisulfite sequencing.

To see how transcription is affected, you could extract RNA from the tumor and normal cells, and compare the levels of RNA between the two samples by qRT-PCR

3 0
3 years ago
Carbon dioxide + oxygen makes glucose + oxygen
qaws [65]

Explanation:

In the process of photosynthesis, plants that contain chlorophyll utilize carbon dioxide and water using energy from sunlight that is absorbed by chlorophyll to make glucose + oxygen.

3 0
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Any change in allele frequencies in a gene pool is
Goryan [66]
Any change in allele frequencies in a gene pool is a mutation 
8 0
3 years ago
Which function do the integral proteins in the phospholipid bilayer perform
liraira [26]
<span>they maintain the integrity of the cell membrane </span>
3 0
3 years ago
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How do the parts of the flower interact as a system for the purpose of reproduction?​
lesya [120]

Answer:

The function of the male parts of flowering plants is to produce pollen grains. The pollen grains contain sperm which will fertilize the egg and create a seed to sprout the next generation of plants. The main male part is the stamen. It is divided into two parts: the anther and the filament.

Explanation: that may or may not help, but i hope it does

6 0
3 years ago
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