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AleksandrR [38]
3 years ago
15

Biologists use ball-and-stick models to study complex molecules by representing atoms with balls and bonds with sticks. DNA

Biology
1 answer:
Ludmilka [50]3 years ago
7 0

Answer:

Some kinds of atoms that are found in DNA must be left out of the models. DNA has so many atoms that the size and cost of a model could be too great. It is impossible to distinguish different kinds of atoms with models.

Explanation:

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Helppp I don’t know the answers and need to know as soon as possible
jok3333 [9.3K]

Answer:

A) central nervous system

B) Peripheral nervous system

4 0
3 years ago
Which of the following is a tentative answer to a question?
CaHeK987 [17]
<span>"Hypothesis, because tentative means unsure."
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7 0
3 years ago
Explain the role played by muscle and bone when Ahmed picks up a heavy weight from the ground to the table top. 1909299393200202
Strike441 [17]

Answer:

Muscles pull on the joints, allowing us to move.Muscles make up half of a person's body weight. They are connected to bones by tough, cord-like tissues called tendons, which allow the muscles to pull on bones. If you wiggle your fingers, you can see the tendons on the back of your hand move as they do their work.

5 0
2 years ago
Maria is testing the behavior of monkeys. First, she shows the monkey a rectangle. Then she shows the monkey a rectangle and a c
aivan3 [116]

Answer:

The correct answer is "temporal lobe".

Explanation:

The temporal lobe is the part of the brain involved in primary auditory perception by receiving sensory information from the ears and secondary areas and translating in into meaningful units such as speech and words. It was proved since 1954 by Mishkin and Pribram that the removal of the temporal lobe part of the brain produces a severe visual discrimination deficit in monkeys. This is the case for Maria's experiment, when the monkey was not able to differentiate between the rectangle and the cylinder anymore. Therefore, it is very likely that the part of the monkey's brain that was removed was the temporal lobe.

7 0
2 years ago
Ability to roll the tongue is caused by a dominant allele. A woman is a "roller," but one of her parents is not. Reference: Ref
matrenka [14]

Answer:

1/2.

Explanation:

The autosomal dominant trait may en defined as the trait that can express itself even in the heterozygous condition and in the homozygous dominant condition as well.

Let the B allele is responisble for the roll tongue and b is recessive allele. The woman can roll the tongue and she must have the genotype Bb because her one parents is normal. The woman married with a man with non roller ( bb). The Bb × bb cross results in the following progeny Dd, Dd ( roller), dd and dd ( non roller). The probability of the child being a roller is 1/2,

Thus, the answer is 1/2.

5 0
2 years ago
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