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Wittaler [7]
2 years ago
5

Which structure is directly responsible for housing a cell's DNA?

Biology
1 answer:
denis23 [38]2 years ago
8 0

Answer:

The nucleus.

Explanation:

The nucleus is basically "the boss" of DNA along with housing it. Hope this helps!

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Thick rigid cell wall is not  characteristic of a parenchyma cell
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3 years ago
Which of these is NOT a way that large molecules, like glucose, can enter a cell?
WITCHER [35]
Hello There! ^_^

Your question: Which of these is NOT a way that large molecules, like glucose, can enter a cell..?

Your answer: Diffusion through the cell membrane is not a way that the large molecules, like glucose, can enter a cell.

The answer is option A.

Happy Studying! =)




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3 years ago
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Describe two observations a scientist could make about the leaf, cells, and chloroplasts shown.
xxMikexx [17]

Answer:

Leaf cells contain chloroplasts. Photosynthesis happens in the chloroplasts as they hold vitality from the sun. Chloroplasts contain chlorophyll, which influences leaves to seem green.

The tissues of the leaf in the middle of the epidermal cells, into which gases diffuse from the stomata, are called mesophyll. The mesophyll can be additionally separated into two layers, the palisade layer, and the springy layer, both of which are stuffed with chloroplasts, the production lines of photosynthesis.

Explanation:

~_~~_~-.

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6 0
3 years ago
The following are the steps for B-cell activation. The steps are in an incorrect order.
Nataly_w [17]

Answer:

4. B cells become activated by interacting with helper T cells.  

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2. Antibodies released by plasma cells bind to the antigen so they will be destroyed by other cells of the immune system.

3.B cells rearrange their DNA to create a unique B-cell receptor.  

5. B cells undergo clonal expansion.

6. B cells digest antigens that bind to the antibodies on their surface.

Explanation:

B-cells get activated by interacting with helper T cells when they bind to the antigen to receptors i.e (MHC class II receptors on the cell surface) on the surface of the cell. Series of activities such as release by plasma cells which cause rearrangement of B cells causes the cell to divide and proliferate. The process through which daughter cells arise from a parent cell called clonal expansion.

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3 years ago
In pea plants, purple flowers (P) are dominant to white flowers (p). What color flowers would the following genotypes produce in
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