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galben [10]
3 years ago
9

--Please Help PLEASE--

Biology
2 answers:
Liula [17]3 years ago
7 0
1.a
2.c
3.a
4.a

have a good day!!
ICE Princess25 [194]3 years ago
3 0

<span>1) A. (Earth takes 365 days to travel one complete orbit)</span>

2) C.

3) A. (<span>The waxing gibbous phase occurs between the first quarter and full moon phases.)</span>

<span>4) A. (There would still be some slight changes during the year even though there would not be seasons as we know them now)</span>

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Function of a mitochondion
olya-2409 [2.1K]

Answer:

mitochondria are to produce the energy currency of the cell, through respiration, and to regulate cellular metabolism.

Explanation:

the role of mitochondrion is to generate the energy commodity of the cell, by respiration, and control of cell metabolism.Mitochondrial is the ATP synthesis site for the cell. The amount of mitochondria present in a cell is also a strong predictor of the cell 's rate of metabolic activity; cells that are very metabolically active, such as hepatocytes, may have more mitochondria.

hope this helped!

4 0
3 years ago
The term ____________________ describes one-celled microscopic organisms, some of which cause diseases in humans.
IRISSAK [1]
Answer will be germs like bacteria, virus, fungi, and protozoa that can cause disease
8 0
2 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.  

1. B cells display antigens in MHC class II receptors on the cell surface.  

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.  

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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.

4 0
3 years ago
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levacccp [35]

Answer:

Macro: Phosphorous, Protein, Fat, Carbohydrates

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6 0
3 years ago
I don’t get number 1 and 4
marta [7]

I don't get it either I just want the brainy points lol

6 0
3 years ago
Read 2 more answers
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