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3 years ago

explain what it means to view something from a frae of reference. provide an example that illustrate your explanation.

Biology

1 answer:

vladimir1956 [14]3 years ago

3 0

Answer:

ex. where you are standing now

a perspective that one uses to determine if an object is moving.

Explanation:

in physics, a frame of reference, or reference frame, is a perspective that one uses to determine if an object is moving. ... For example, when you see a ball roll down a street, you can tell the ball is moving because the frame of reference is the streets, whatever may be on the side of the roads, or the Earth.

wikipedia

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Answer:

A rancher had 500 cows and took one shot that got them all.

The answer depends on the imagination of the reader.

May be cow thief arrived and taken all cows of that rancher, then the rancher shot the thief using a gun and that got them all.

Explanation:

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decrease, decrease

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3 years ago

In its role as an antioxidant, _____ guards cell membranes, body proteins, dna, and cholesterol, and thus helps prevent heart di

vodka [1.7K]

Answer:

The answer is Vitamin E or α-tocopherol.

Explanation:

Vitamin E is a fat-soluble vitamin is first absorbed in the small intestine and is then stored at the liver. It is an antioxidant which protects cells from free radicals or reactive oxygen species (ROS). It can also prevent bad cholesterol from depositing in the blood vessels.

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3 years ago

The ____________ in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is ____________ . This caus

Oxana [17]

Answer:

The PCO₂ -carbon dioxide partial pressure- in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is 45 mmHg. This causes carbon dioxide to diffuse down its partial pressure gradient from the blood into the alveoli.

Explanation:

Gas exchange is a physiological process that involves the entry of oxygen into the body and tissues and the exit of carbon dioxide, a product of metabolic reactions.

At the pulmonary level, gas exchange occurs between the alveoli and the alveolar capillary, and the diffusion of gases across the alveolar-capillary barrier is dependent on a pressure gradient due to the partial pressure of gases.

In the case of CO₂ the diffusion goes from where the partial pressure is higher to where it is lower, i.e. from the alveolar capillary, where the PCO₂ is 45 mmHg, to the pulmonary alveolus, where the PCO₂ is 40 mmHg.

Learn more:

Gas exchange brainly.com/question/4469204

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3 years ago