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Biology

1 answer:

vitfil [10]2 years ago

4 0

The correct choice is velocity=distance/time of v=d/t

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The leg muscles of a sprinter would differ from a marathon runner in that ________. The leg muscles of a sprinter would differ f

andrew11 [14]

Answer:

The correct answer is - per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles.

Explanation:

Marathon runners have smaller leg muscles and thinner quads and calves as marathon runners require slow-twitch muscles while in sprinters the fast-twitch muscle requires. Slow-twitch muscles of marathon runners have more amount of myoglobin, per gram than fast-twitch muscles.

Myoglobin acts as local oxygen storage that provides oxygen to the muscles in case of less oxygen supply than required temporarily and a marathon race is an intense exercise or activity that requires more oxygen.

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2 years ago

The sharp, inch-long thorns of the crown-of-thorns sea star are its spines. These spines, unlike those of most other sea stars,

vitfil [10]

Answer:

The answer is A) derived from the nematocysts of its prey.

Explanation:

Sea stars mostly eat cnidarians (mollusks) which can contain a large number of nematocysts in their bodies. Therefore it would be possible that this toxin is absorbed from the prey.

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3 years ago

Name two major divisions of the nervous system

mr_godi [17]

Answer: Central and Peripheral.

Explanation: The nervous system has two major divisions: central and peripheral. The central nervous system contains the brain and the spinal cord. The peripheral nervous system contains the nerves, which leave the brain and the spinal cord and travel to certain areas of the body.

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3 years ago

The rows of Mendeleev's periodic table are called

Nimfa-mama [501]

Mendeleev called the rows periods.

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2 years ago

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Secretions from the highlighted glands ________. secretions from the highlighted glands ________. produce a layer of enzyme lade

aleksley [76]

<h3>Answer;</h3>

produce a layer of enzyme laden mucus that captures dirt and destroys inhaled bacteria

<h3>Explanation;</h3>

Secretions from the highlighted glands produce a layer of enzyme laden mucus that captures dirt and destroys inhaled bacteria 
During inhalation airt that contains dust particles or bacteria or other microorganisms may enter the air ways.
The layer of the airway covering the airways, is rich in antimicrobial compounds and mucins that are responsible for removal bacteria and other microorganisms from the airway .
This layer consist of mucus that traps, kills, and also inactivates the bacteria. It also contains periciliary fluid which keeps mucus at optimum distance from the underlying epithelia, to enhance bacteria clearance and the motility of cilia.

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3 years ago