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dmitriy555 [2]
2 years ago
13

The stems of these seedlings wrap around sticks. Which sentence best explains how this response benefits the seedlings?

Biology
2 answers:
jenyasd209 [6]2 years ago
8 0

Answer:

C

Explanation:

kramer2 years ago
7 0
The answer is C because it’s the only one that makes sense
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Suppose 10,000 units of energy are available at the level of the grasses. What is the total number of energy units available by
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If they gave IVs of pure water in the emergency room to people who are dehydrated, what would happen?
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Answer:

The correct answer is: <em>B. blood cells would be in a hypotonic solution, so water would rush into the cell causing it to expand and eventually burst</em>.

Explanation:

Cells have a certain solute concentration that produces an osmotic pressure of aproximately 300 mOsm. For that reason, IVs solutions must have a solute concentration which equals the cell osmotic pressure. That is usually acomplished by using an aqueous solution of NaCl 0.9% w/v or 5% w/v Glucose.

If an IV of pure water is administrated to a person, the blood cells will be in a hypotonic solution. That is, with a concentration lesser than the concentration inside the cells. Due to the difference in concentration, a net flow of water will be produced from the exterior to the cell interior. As the volume of the cell is increased, the cell membrane is damaged and eventually the cell will collapse.

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3 years ago
Which process in eukaryotic cells will proceed normally whether oxygen (o2) is present or absent?
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3 years ago
If there is no one scientific method what do scientists have in common
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crazy hair

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3 0
3 years ago
Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secrete
Tanya [424]

Calcium levels in the body are maintained by hormones. If the blood calcium level rises above a set point, calcitonin is secreted by the thyroid gland and sets into motion responses to lower the blood calcium back to the set point. If the blood calcium level falls below a set point, the parathyroid gland secretes parathyroid hormone that sets into motion responses to raise the blood calcium. These homeostatic responses are examples of:

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Answer:

d. negative feedback

Explanation:

Negative feedback responses are the ones that counteract the change. Any alterations in the internal body conditions such as blood calcium levels are sensed by receptors. The information is sent to the brain which in turn commands the effectors such as endocrine glands to secrete the required hormones to restore the normal conditions. Here, changes in the calcium levels are counteracted by the secretion of calcitonin and parathyroid hormones and the calcium is maintained within a narrow range. This represents negative feedback.

8 0
3 years ago
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