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uysha [10]
3 years ago
15

Help please ASAP, easy question

Biology
1 answer:
lutik1710 [3]3 years ago
8 0
I think the answer is B because it happens slowly and through natural selection
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The sodium-potassium ion exchange pump_____________.
Dvinal [7]

Answer: option D

The sodium potassium ion exchange move sodium and potassium in opposite direction in electrochemical gradients.

Explanation:

The sodium potassium pump is found in many animals plasma membranes and its moves the sodium and potassium ion in opposite direction across the plasma membrane with the hydrolysis of ATP(adenosine triphosphate) to supply the needed energy. It is an active transport process.

8 0
3 years ago
In the ED, blood is withdrawn from the vein and into a test tube. The packed cell volume (RBCs) is 1.45 ml, and the plasma volum
Yuri [45]

Answer:

<h2>1.45 + 3.55 = 5.0 (total blood volume);  1.45/5.0 × 100 = 29% (low),</h2>

Explanation:

HCT is calculated as:

HCT = Volume of red blood cells / (Volume of red blood cells + volume of plasma) x 100  

1.45 + 3.55 = 5.0 (total blood volume);  1.45/5.0 × 100 = 29% (low), normal range for an adult female HCT  ranges from 38 to 46% (some sources claim 34.9-44.5%).

*for calculating this, one must know two of these three values: packed cell volume, total blood volume, plasma volume.

Total blood volume = Packed cell volume + plasma volume.

4 0
3 years ago
While assessing the client's skin, a nurse notices a skin condition, the pathophysiology of which involves increased visibility
Alborosie
<span>This is called erythema. Causes for this can include a fever, direct trauma, blushing, or ETHOL intake. This type of pigmentation can affect the face, the area in which trauma may have incurred, the sacrum, the shoulders, and other common sites for ulcers.</span>
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3 years ago
DNA within cells is usually wrapped around histone proteins to form a complex structure called chromatin. Describe how chromatin
user100 [1]

Answer:

Chromatin helps regulate DNA replication.

Explanation:

Chromatin helps condense DNA strands to smaller units that can be easily managed during DNA replication and gene expression. This also prevents the breakage of the strands and facilitates equal distribution of chromosomes during cell division (during mitosis and meiosis).  

7 0
3 years ago
How does active and passive transport apply to your life
klasskru [66]

Answer:

There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done.

Explanation:

7 0
2 years ago
Read 2 more answers
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