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3 years ago

Diffusion is a passive process that accounts for the movement of respiratory gases across the capillary membranes of alveoli.

Biology

1 answer:

strojnjashka [21]3 years ago

4 0

Answer:

True

Explanation:

Diffusion is a passive process (no energy required) in which the substance such as liquid and gases moves from an area of high concentration to an area of low concentration.

During respiration, carbon dioxide diffuses from the blood into the alveoli and oxygen diffuses from alveoli to blood across the respiratory membrane. The partial pressure of oxygen is low in the blood of the pulmonary capillaries and high in the alveoli. so diffusion allow movement of oxygen across the respiratory membrane from the alveoli into the blood.

Hence, the given statement is true.

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If it has ______ in it, it is alive! a. RNA b. carbon c. water d. cells and DNA

koban [17]

Answer: D cells and DNA

Explanation: Anything that has cells and DNA is a living thing (organism)

4 0

2 years ago

The c shape of the tracheal cartilages is important because

Darina [25.2K]

Answer:

The correct answer is: It allows large masses of food to pass through the esophagus when swallowing.

Explanation:

The trachea, or windpipe, is a hollow organ that connects the larynx to the bronchi and allows the passage of air so it can reach the lungs and make the gas exchange possible.

The trachea has cartilages around it to reinforce the tube for protection and to maintain the airway open. The places where there's cartilage are the anterior and the lateral sides of the trachea. This cartilage has the shape of an incomplete ring, or the shape of a C to allow the passage of food. The side that has no cartilage is the posterior side of the trachea, which is the side that is in relation to the esophagus - the part of the gastrointestinal tract that transports the food from the buccal cavity to the stomach.

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2 years ago

How do the Earth and Moon compare in terms of gravitational force?

Law Incorporation [45]

The Earth and Moon compare in terms of gravitational force as Earth's gravitational force is stronger than the Moon's.

Option A

Explanation:

According to universal law of gravity, the gravitational force is the attractive force between two objects separated by a distance. The magnitude of gravitational force is directly proportional to the product of masses of the objects and inversely proportional to the square of the distances between them.

In this case, the gravitational force acting on us due to Earth will be considered due to the mass of Earth as the mass of Earth is very large compared to our mass.

$F=\frac{GM}{R^{2} }$

So as the mass of the Earth is greater than the mass of the moon, so the gravitational force of Earth will be stronger than that of Moon.

3 0

3 years ago

Read 2 more answers

Scientists have discovered by looking at fossil records that the ancestors of flying squirrels did not have flight membranes and

Assoli18 [71]

they use natural selection because they got separated from their kind and have to make new living also they need to adapt to the environment

7 0

3 years ago

Examine the image of the Hertzsprung-Russell diagram.

SashulF [63]

Answer: A. Cool

Explanation:

The diagram shows that moving from the left to the right indicates a lower temperature and the arrow is pointing to stars to the right which means that they are cool in comparison to those on the left.

Red stars like the one being pointed to are the cooler stars with temperatures of less than 6,000 Kelvin as opposed to blue stars which are very much hotter and go above 10,000 Kelvin.

8 0

2 years ago