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Alexxx [7]
2 years ago
8

Simple animals are able to supply their cells with nutrients through diffusion and active transport across cell membranes becaus

e A. they have complex circulatory systems.
B. their cells are in direct contact with the environment.
C. their cells are not in direct contact with the environment.
D. their blood transports oxygen and other materials through a series of blood vessels.
Biology
2 answers:
Monica [59]2 years ago
7 0

The correct answer is option B) their cells are in direct contact with the environment.

By simple animals we mean unicellular organisms or organisms which have very low grade of organisation. Such organisms do not have three germ layers they either have 2 germ layers or do not have germ layers at all that means that they are comprised of only one cell. Since, they do not have many germ layers in their body their cells are in direct contact with the environment. Their cells can directly obtain nutrients form the environment through the process of diffusion. But, in complex organisms the cells do not obtain nutrients directly from the environment. They have specialized organs and organ systems to accomplish a particular task which increases their efficiency. They have well organized circulatory system which supplies nutrients to the cells/tissues of the body.

goldfiish [28.3K]2 years ago
6 0
This is because of B. Their cells are in direct contact with the environment.
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2 years ago
As the minnow population increases in size, how will its rate of growth affect its population density?
irinina [24]
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8 0
3 years ago
Match each scenario to its related biomolecules. Jack is eating a diet that will help him build muscle, so he eats a diet high i
Stells [14]

The options for this question are as follows:

A. Nucleic acids

B. Carbohydrates

C. Fats

D. Proteins

Now the correct answers of the match are as follows:

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Explanation: Proteins help to build up the muscles. That's why people who want to do body-building, eat protein rich foods, like chicken, eggs, soy, etc.

Before a race, Ruth drinks a beverage full of this biomolecule to get energy. <u>B. Carbohydrate </u>

Explanation: This biomolecule provides instant energy to our body. For example, glucose is consumed before race, as dissolves quickly in our blood and provides instant energy. Glucose is an example of simplest carbohydrate.

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Explanation: Fats are the kind of biomolecule which is stored in our body in the adipose tissues. Also, when glucose is all used up by our body cells, the body starts to get energy from this stored fat.

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3 years ago
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Burka [1]
The gene p53, also called the guardian of the genome is located on the 17th chromosome in human genomes.
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3 years ago
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Lelechka [254]

Answer:

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