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Maru [420]
3 years ago
7

What is a nucleus. *Use the picture provided.*

Biology
2 answers:
svetlana [45]3 years ago
4 0

Answer/Explanation:

A nucleus is the most important part of a group(or object). Rick Astley, the singer provided in the picture is the sole part of his famous song "Never Gonna Give You Up."

barxatty [35]3 years ago
3 0

Answer:the central and most important part of an object, movement, or group, forming the basis for its activity and growth.

Explanation: a living thing like that dude

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Alex787 [66]
C. DNA Polymerase matches adenine to thymine and cytosine to guanine. Two identical double helixes are produced.
4 0
2 years ago
B cells interacting with helper t cells are stimulated to differentiate when _____.
madam [21]
There are choices for this question namely:

<span>A) B cells produce IgE antibodies
B) B cells release cytokines
C) cytotoxic T cells present the class II MHC molecule-antigen complex on their surface
D) helper T cells release cytokines

The correct answer is "helper T cells release cytokines". Cytokines are released by helper T cells when B cells attach to them via receptors. These T cells "help" these B cells to differentiate by secreting certain cytokines. When B cells differentiate, they are converted to plasma cells and able to secrete antibodies to the antigen presented to the T cells. </span>
3 0
3 years ago
Karina is looking at a group of cells under the microscope. The organism has many cells, each with a cell wall and green chlorop
son4ous [18]
The answer would be C. Plantae because it has membrane bound organelles and green chloroplasts, as well as containing a nucleus.
8 0
3 years ago
Read 2 more answers
Which of the following correctly describes the structure and function of tissue layers found in blood arteries and veins?
Paladinen [302]

Answer:

Explanation:

Tunica media; contains connective tissue that provides structural support  

3 0
3 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.

8 0
3 years ago
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