Life Processes Test

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Life Processes Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Ideal function of vermiform appendix in human body is________.

A
Digestion of cellulose

B
Decrease the digestion

C
Produce more energy

D
Increase the weight

Solution

The previous human species used to have raw food. So to digest cellulose, enzyme cellulase was secreted by the appendix in the intestine of the individual.
So, the correct answer is 'Digestion of cellulose'
Question 2
1 / -0

Example of life processes is

A
Excretion

B
Respiration

C
Photosynthesis

D
All of the above
Solution
- Excretion is the process of removal of waste from the body.
- Respiration is the breakdown of complex food to release energy.
- Photosynthesis is the synthesis of food from inorganic materials like water, carbon dioxide and sunlight.
- All of these are life processes performed only by living organisms and help to maintain their metabolic function.
So, the correct answer is 'All of the above'.
Question 3
1 / -0

Lymph helps is the absorption of

A
Carbohydrate

B
Proteins

C
Fats

D
All of the above

Solution

Lymph is an integral part of the circulatory system which plays an important role in the defensive mechanism. It does not absorb vitamins and minerals but fats from the intestinal villi.
So, the correct answer is option C.
Question 4
1 / -0

Respiration may occur in the absence of oxygen in

A
Potato.

B
Spirogyra.

C
Yeast.

D
Humans.

Solution

Respiration can be carried out in the presence of oxygen (aerobic) or in the absence of oxygen (anaerobic). Fermentation is a special type of anaerobic respiration carried out by microorganisms. Common yeast is a microorganism which can carry out alcoholic fermentation where they respire in absence of oxygen produces alcohol, carbon dioxide and less amount of energy. Therefore, the correct answer is option C.
Question 5
1 / -0

The breakdown of Pyruvate to give Carbon dioxide, water and energy takes place in the ___.

A
Cytoplasm

B
Mitochondria

C
Chloroplast

D
Nucleus
Solution
Correct Answer- B
Explanation-
The breakdown of pyruvate in order to generate carbon dioxide, water, and energy (ATP) in the presence of oxygen is known as aerobic respiration.
Aerobic respiration mainly occurs in the eukaryotic cells when they have oxygen in sufficient amount and it takes place in the Mitochondria.
Hence, the correct answer is Mitochondria.
Question 6
1 / -0

Which of the following has the similarities with the lymph?

A
Red blood cells

B
Blood plasma

C
White blood cells

D
Nutrients

Solution

Since the lymph is derived from the interstitial fluid, its composition continually changes as the blood and the surrounding cells continually exchange substances with the interstitial fluid. It is generally similar to blood plasma, which is the fluid component of blood. Lymph returns proteins and excess interstitial fluid to the blood stream. Lymph may pick up bacteria and bring them to lymph nodes, where they are destroyed. Metastatic cancer cells can also be transported via lymph. Lymph also transports fats from the digestive system (beginning in the lacteals) to the blood via chylomicrons.

So, the correct option is 'Blood plasma'.
Question 7
1 / -0

Digestion and absorption of nutrients take place in:

A
Small intestine

B
Large intestine

C
Stomach

D
Oesophagus

E
Mouth
Solution
Pancreatic amylase, trypsin and lipase along with intestinal peptidases and maltase carry out the chemical digestion of food in the small intestine. The simpler substances formed by chemical digestion are then absorbed by the intestinal villi in the small intestine. Digestion of food takes place in the mouth and stomach but absorption does not happen here. No digestion of food takes place in the oesophagus and the large intestine.
- Thus, the correct answer is option A.
Question 8
1 / -0

Lowest pH is found in

A
Small intestine

B
Large intestine

C
Stomach

D
Esophagus

E
Mouth

Solution

The gastric glands of stomach produce gastric juice, which contains pepsinogen, HCl, and mucus. HCl imparts highly acidic pH to stomach which in turn supports conversion of inactive pepsinogen into active pepsin. The proper acidic environment of stomach triggers the opening of one way pyrrolic sphincter which in turn allow the chyme to move into the small intestine for further digestive processes. Thus, the correct answer is option C.
Question 9
1 / -0

Which of the following enzymes would be most affected by the overdose of antacid?

A
Maltase

B
Lactase

C
Lipase

D
Pepsin

E
Sucrase

Solution

In the stomach, the enzyme pepsin breaks protein into smaller pieces called polypeptides. For proper functioning of pepsin, acidic pH is necessary. A pH of 2 is optimum for pepsin function. Antacids neutralize the normal stomach acid pH and bring it up to 6 to 7. As pH rises above 4, pepsin activity decreases or stops. That is why when a person takes too much antacid the pH of the stomach may rise to 11, which affects pepsin production severely. Maltase, Lactase, Lipase, and Sucrase are produced in the small intestine and they are active in a pH range from 2 to 6.
So, option D is the correct answer.
Question 10
1 / -0

The correct order of the flow of blood through the heart, entering from vena cava is

A
Left atrium $$\rightarrow $$ left ventricle $$\rightarrow $$ right ventricle $$\rightarrow $$ right atrium

B
Left ventricle $$\rightarrow $$ left atrium $$\rightarrow $$ right atrium $$\rightarrow $$ right ventricle

C
Right atrium $$\rightarrow $$ right ventricle $$\rightarrow $$ left atrium $$\rightarrow $$ left ventricle

D
Right ventricle $$\rightarrow $$ right atrium $$\rightarrow $$ left atrium$$\rightarrow $$ left ventricle

E
Right ventricle $$\rightarrow $$ right atrium $$\rightarrow $$ left ventricle $$\rightarrow $$ left atrium

Solution

Humans have double circulation: one is systemic circulation and other is pulmonary circulation. In systemic circulation, oxygenated blood moves from heart to all parts of the body. In pulmonary circulation, deoxygenated blood is pumped by heart to get oxygenated in lungs. All the deoxygenated blood from the body comes to the right atrium and it moves to the right ventricle from there and finally to the lungs carried by pulmonary trunk. From lungs, oxygenated blood enters left atrium to go to left ventricle to be carried by aorta to whole body. So, the correct answer is 'Right atrium$$\rightarrow$$ right ventricle $$\rightarrow$$ left atrium $$\rightarrow$$ left ventricle'

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Re-Attempt Weekly Quiz Competition

Life Processes Test - 67

Result

Life Processes Test - 67

Score

-

Rank

-

SHARING IS CARING

Question 1

Digestion of cellulose

Decrease the digestion

Produce more energy

Increase the weight

Solution

Question 2

Excretion

Respiration

Photosynthesis

All of the above

Solution

Question 3

Carbohydrate

Proteins

Fats

All of the above

Solution

Question 4

Potato.

Spirogyra.

Yeast.

Humans.

Solution

Question 5

Cytoplasm

Mitochondria

Chloroplast

Nucleus

Solution

Question 6

Red blood cells

Blood plasma

White blood cells

Nutrients

Solution

Question 7

Small intestine

Large intestine

Stomach

Oesophagus

Mouth

Solution

Question 8

Small intestine

Large intestine

Stomach

Esophagus

Mouth

Solution

Question 9

Maltase

Lactase

Lipase

Pepsin

Sucrase

Solution

Question 10

Left atrium $$\rightarrow $$ left ventricle $$\rightarrow $$ right ventricle $$\rightarrow $$ right atrium

Left ventricle $$\rightarrow $$ left atrium $$\rightarrow $$ right atrium $$\rightarrow $$ right ventricle

Right atrium $$\rightarrow $$ right ventricle $$\rightarrow $$ left atrium $$\rightarrow $$ left ventricle

Right ventricle $$\rightarrow $$ right atrium $$\rightarrow $$ left atrium$$\rightarrow $$ left ventricle

Right ventricle $$\rightarrow $$ right atrium $$\rightarrow $$ left ventricle $$\rightarrow $$ left atrium

Solution

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