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3 years ago

I’m very confused. Please help fast.

Biology

1 answer:

Nimfa-mama [501]3 years ago

4 0

I said it polar bear

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Cell-to-cell communication is absolutely essential for multicellular organisms. But how do plants communicate when their cells a

nevsk [136]

Ans.

Cell-to-cell communication allows signalling of essential substances between the plant cells, which are surrounded by cell walls. The molecules used by plants for long-distance signalling are known as hormones, such as auxin, ethylene, and gibberelin.

These hormones are secreted by one plant cell and received by another plant cell, where it exerts it affect. Thus, the correct answer to be fill in the blank is 'option A). hormones.'

3 0

2 years ago

Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. how much glycog

NemiM [27]

Answer: The correct answer would be 112.5 pounds

Explanation:

Let us first covert the pound into grams. We know that 1 pound is equal to 453.59 grams.

Thus, 50 pound of fat = 50 x 453.59 = 22,679.5 grams.

We know that, 1 gram of fat releases 9 Kcal of energy. Thus, total energy produced by 22679.5 grams = 9 x 22679.5 = 204,115.5 Kcal

Glycogen is carbohydrate thus, it will produce 4 Kcal of energy per gram.

Thus, 4 x C = 204,115.5 (where C is the grams of glycogen)

⇒ C = $\frac{204115.5}{4}$

⇒ C = 51,028.875 grams

Using 1 pound = 453.59 grams, we con convert 51,028.875 grams into pounds:

453.59 = 1

1 = $\frac{1}{453.59}$

51,028.875 = $\frac{1}{453.59} x 51028.875$

= 112.5 pounds

Thus, 112.5 pound of glycogen would be needed to produce the same amount of energy as produced by 50 pounds of fat.

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2 years ago

Which of the following time periods accurately represents the training period of an animal control officer?

sattari [20]

A is the answer

Training programs for animal control officers usually take from a few weeks to a few months to complete.

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2 years ago

Enzymes catalyze reactions by

grandymaker [24]

Answer:

idk but good luck i hope you get it right

Explanation:

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3 years ago

Describe what brownfields are and how they can be assessed.

Serjik [45]

Brown fields are property redevelopment

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1 year ago