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omeli [17]
3 years ago
15

Muscles in animals are often found in pairs, because

Biology
1 answer:
sweet [91]3 years ago
5 0

The correct answer is muscles can only pull.

The movement of arm takes place by the relaxation and contraction of muscles. Muscles in animals are in pair because muscles can only pull, when a pair of muscle is present in animals one muscle relaxes and the other one contracts. An example of this is biceps and triceps of arm. The triceps  of the arm relaxes while the biceps of the arm  contracts, this movement helps to lift the arm. The reverse also takes place in the arm.






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Grouping objects or information based on similarities
Ivenika [448]
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The Radio-ulna and digits of most primates and animals represents a homologous structure




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The homologous chromosomes have the same genes in common. Each cell has at least two sets of chromosomes which one comes from one’s father also called as paternal chromosome and mother, called as the maternal chromosomes. These chromosomes are what makes the child obtain the characters and may depend on the traits the parents possess. Homologous chromosomes are not duplicated chromosomes or identical however, they are analogous or similar. The alleles for a specific characteristics isn’t the same but the same genes are in the same order.<span> </span>
8 0
3 years ago
Which statement is a scientific theory?
BARSIC [14]

Answer:

Acceleration of an object increases as the force of an object increases is the scientific theory. Hope this helps :)

Explanation:

5 0
3 years ago
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Cells must be alive to use energy and do work dose passive transport occur in a cell that is dead? Why or why not?
Orlov [11]

Answer:

<h3>Yes, Passive transport can occur in dead cells.</h3>

Explanation:

For passive transport to occur, a concentration gradient has to be formed across a permeable or semi-permeable membrane. If the cell membrane of the dead cell, which is a semipermeable membrane, is intact and a concentration gradient has formed on both sides, passive transport can occur.

A concentration gradient is the difference in the concentration of solute molecules  across the membrane. Passive transport will allow solute molecules to travel from the higher concentration of the solute to the lower concentration across a membrane till equilibrium is reached, that is, both the sides of the membrane has equal concentration of the solute.

The transport of the solvent can occur as well, from higher concentration to lower concentration.  

6 0
3 years ago
Which of these is an agent of abrasion?
patriot [66]

Answer:

A. Rock pieces

Explanation:

Abrasion is the breaking down and wearing away of rock material by the mechanical action of other rocks. Three agents of physical weathering that can cause abrasion are moving water, wind and gravity. None of those are agents of abrasion. But Rock pieces are a result of abrasion.

3 0
3 years ago
This is a repetition of an experiment. Scientist use multiples of these to ensure the reliability of their results. (The first t
Tamiku [17]
The answer I think is Trials
7 0
3 years ago
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