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gogolik [260]
3 years ago
8

What do flowering and nonflowering plants have in common?

Biology
1 answer:
Maurinko [17]3 years ago
8 0

Flowering plants or Angiosperms have seeds that are enclosed within an ovary (usually a fruit), while Gymnosperms have no flowers or fruits, and have “naked” seeds.

Both classes:

<span>·         </span><span>Have differentiation of the sporophyte  (root, stem, and leaves),</span>

<span>·     </span>Produce pollen for fertilization,

<span>·     </span><span>Seeds bearing plants (belong to the class  known as Spermatophyta),</span>

<span>·     </span>The vascular system,

<span>·     </span>Reduced gametophytic phase.

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2 years ago
What happens to the speed of sound as it passes from gas to solid? Why?
Pani-rosa [81]

Answer:

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8 0
2 years ago
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
2 years ago
Why is mitosis important to your body
Hitman42 [59]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ Mitosis is important for our body because mitosis makes our bodies grow and develop. Without mitosis, we wouldn't grow and our cells wouldn't be repaired or replaced.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

8 0
3 years ago
Read 2 more answers
What is the main function of the nervous system?
Usimov [2.4K]
Nervous system regulates our body in many aspects:

1) Thinking, storing information
2) Regulation of vomitting, swallowing, 
3) Moderate other physiological functions of the body

Hope this helps!
5 0
3 years ago
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