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Scrat [10]
3 years ago
7

Depending on whether they have a ______, cells are classified as prokaryotic or eukaryotic

Biology
1 answer:
Xelga [282]3 years ago
8 0
Eukaryotic cells<span> contain membrane-bound organelles, including a nucleus</span>.Prokaryotic cells<span> do not contain a nucleus or any other membrane-bound organelle.</span>
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Please answer this ASAP
loris [4]

B

I hope this answer helped! please rate 5 stars >:)

8 0
2 years ago
Which area of the brain is linked to emotions such as fear.
faust18 [17]

limbic system

Explanation:

center of emotional processing is the amygdala

6 0
2 years ago
Suppose it were possible to conduct sophisticated microscopic and chemical analyses of microfossils found in 3.5-billion-year-ol
soldier1979 [14.2K]

Answer:

The correct answer is option 3. a nucleus.

Explanation:

The first genetic material present in the early organisms were RNA which was present in the microscopic organisms back then 3.5 billion years ago which means it is normal to have RNA in such microfossils chemical analysis.

Since, the nucleus was not present in early life forms of prokaryotes like bacteria. so, it is unusual to find nucleus in the fossils of stromatolite rocks.

Thus, option III is the correct answer.

7 0
3 years ago
What happens after activation of T cells<br>​
NikAS [45]

Answer:

Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.

Explanation:

Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.

8 0
2 years ago
Is maltodextrin flammable substance?
Marta_Voda [28]

Answer:

Yes.

Explanation:

Produced from starch by partial hydrolysis, it is usually found as a combustible/explosible, white, hygroscopic spray-dried powder.

4 0
3 years ago
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