Question

I. Rewrite the correct statements:

a. Plants breathe only at night.

b. In Amoeba and Paramoecium, exchange of gases takes place through small air holes.

c. Fish develops air bags called lungs for gaseous exchange.

d. The taking in of air rich in oxygen into our body is called exhalation.

e. When we breathe in air, the diaphragm goes down decreasing the space in the chest cavity.

f. Some organisms like yeast, carry out aerobic respiration.

g. Aerobic respiration takes place in the absence of oxygen.

h. Cellular respiration takes place in the lungs.

i. Unicellular organisms exchange gases through their cell membrane by breathing.

Answer 1

h. Cellular respiration takes place in the lungs.

i. Unicellular organisms exchange ga

Explanation:

h. Cellular respiration takes place in the lungs.

i. Unicellular organisms exchange ga

Answer 2

Answer:

1. plants release carbon dioxide and take in oxygen and oxidation of stored food by absorbed oxygen takes place.

2.Unicellular organisms such as amoeba and paramecium respire through their cell membrane.

3. Most fish exchange gases like oxygen and carbon dioxide using gills

4.The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.

5.As a result, air rushes in and fills the lungs. The second phase is called expiration, or exhaling. When the lungs exhale, the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases. As a result, the lungs contract and air is forced out.

6.How cells extract energy from glucose without oxygen. In yeast, the anaerobic reactions make alcohol, while in your muscles, they make lactic acid.

7.Cellular respiration always begins with glycolysis, which can occur either in the absence or presence of oxygen. Cellular respiration that proceeds in the absence of oxygen is anaerobic respiration. Cellular respiration that proceeds in the presence of oxygen is aerobic respiration.

8.When you breathe, you take oxygen into your lungs as you inhale, and you release carbon dioxide and water vapor as you exhale. Inside all the cells of your body, a different kind of respiration takes place. This kind of respiration is called cellular respiration.

9.In unicellular (single-celled) organisms, diffusion across the cell membrane is sufficient for supplying oxygen to the cell. Diffusion is a slow, passive transport process. In order to be a feasible means of providing oxygen to the cell, the rate of oxygen uptake must match the rate of diffusion across the membrane.

Explanation:

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