Life Processes Test

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Life Processes Test - 86

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Weekly Quiz Competition

Question 1

1 / -0

Match the columns.

List 1	List 2
A. Regulation	1. The removal of metabolic waste from an organism.
B. Reproduction	2. The chemical process of oxidizing organic molecules to release energy.
C. Respiration	3. The replication of an organism.
D. Excretion	4. The control and coordination of chemical processes within the organism.

A- 3, B- 4, C- 2, D- 1

A- 4, B- 2, C- 3, D- 1

A- 4, B- 3, C- 2, D- 1

A- 4, B- 3, C- 1, D- 2

Solution

Regulation includes all the processes within an organism that control and coordinate the many activities that a living organism must perform to adjust to the internal and external environment. Reproduction is the process by which organisms replicate themselves. Cellular respiration is the set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. Excretion is the process by which waste products of metabolism and other non-useful materials are eliminated from an organism.

Question 2
1 / -0

Food becomes .............. due to bile juice.

A
Acidic

B
Alkaline

C
Neutral

D
First neutral and then acidic
Solution
- Bile is alkaline (pH = 7.0-7.4) and has the function of neutralizing any excess acidic pH due to the presence of gastric acid in food before it enters the duodenum.
- Therefore, food becomes alkaline when gets in contact with bile.
- Thus, the correct answer is option B.

Question 3

1 / -0

Match the columns.

	List I		List II
A	Stomach	1	This organ secretes the chemical bile, which is used to emulsify fats.
B	Large intestine	2	This organ absorbs most of the water from the undigested food.
C	Small intestine	3	This organ is the section of the alimentary canal where most of the food is absorbed into the blood.
D	Liver	4	The structure is the site where the chemical breakdown of proteins first occurs.

A- 4, B- 2, C- 3, D- 1

A- 4, B- 2, C- 1, D- 3

A- 2, B- 4, C- 3, D- 1

A- 4, B- 3, C- 2, D- 1

Solution

The stomach starts chemical digestion of protein. The enzyme pepsin is responsible for protein breakdown. The large intestine is primarily responsible for removing water from the contents of the intestine and making it ready for removal from the body. The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs. The main function of the small intestine is absorption of nutrients and minerals from food. Liver is an accessory digestive gland and produces bile, an alkaline compound which aids in digestion via the emulsification of lipids.

Question 4
1 / -0

What will happen if platelets were absent in the blood?

A
The process of clotting will be affected.

B
Kwashiorkor will be the result.

C
RBC will be ruptured.

D
The blood will become more liquid.

Solution

Platelets are the colourless cell fragments present in the blood. They are involved in the clotting. In the absence of platelets, the process of clotting will be affected. If there will be any wound when platelets are absent, the animal will die by shredding of all the blood.
Therefore, the correct answer is option A.
Question 5
1 / -0

Which of the following blood vessels does not carry any carbon dioxide?

A
Pulmonary artery

B
Vena cava

C
Hepatic vein

D
Pulmonary vein

Solution

There are two types of blood vessels such as arteries and veins. Arteries carry oxygenated blood from the heart to other body parts except for pulmonary artery that carries deoxygenated blood from the heart to lungs. Veins carry deoxygenated blood from other parts of the body to the heart except for pulmonary vein that carries oxygenated blood from lungs to the heart. Thus, the correct answer is option D.
Question 6
1 / -0

Consider the following statements.
(a) In muscles, anaerobic respiration produces carbon dioxide, water and energy.
(b) Artificial kidney is a device to remove nitrogenous waste products from blood through dialysis.
(c) Food is translocated inside the plants through phloem.
Which of the above statements are correct?

A
(a) and (b)

B
(b) and (c)

C
(a) and (c)

D
None of the above

Solution

In muscles, anaerobic respiration produces lactic acid. Due to lactic acid accumulation, skeletal muscles are fatigued after some time. Hence, statement (a) is incorrect.
Dialysis is an artificial procedure of excretion of metabolites from blood when kidneys do not work. In this process, the harmful waste products are removed from the blood. Hence, statement (b) is correct.
Phloem is conducting tissue of the plant, which is involved in food translocation from leaves to other parts of the plant body. Therefore, statement (c) is correct.
Therefore, option B is correct.
Question 7
1 / -0

Bile and pancreatic ducts open into

A
Large intestine

B
Stomach

C
Colon

D
Small intestine

Solution

The pancreas is solid (acinar tissues), and contains drainage tubes. The pancreatic juices are made in the acinar tissues and passed by secretion into the tubes (ducts) for transport into the duodenum. The duct of the ventral lobe (pancreatic duct) joins with the bile duct to form the common bile duct which opens into the duodenum at the major duodenal papilla.
Question 8
1 / -0

Which processes would be considered essential for maintaining life?

A
Nutrition and metabolism

B
Respiration

C
Transportation and excretion

D
All of the above
Solution
- All the living organism perform life maintaining process is called as a life process. It is the sequence of mechanisms for survival of organisms.
- There are 7 essential life processes such as reproduction, nutrition, movement, growth, excretion, respiration and sensitivity.
- Thus, the correct answer is option D.
Question 9
1 / -0

What are outside raw materials used by an organism?

A
Food by heterotrophic organisms

B
Carbon dioxide, minerals and water by autotrophic organisms

C
Oxygen by all aerobic organisms

D
All of the above

Solution

Autotrophic organisms can synthesize their own food whereas heterotrophic organisms depend on autotrophs for their food supply. Green plants are the most common autotrophs. They synthesize sugars during the process of photosynthesis. These organisms absorb water and minerals from the soil and use the energy of the sun to synthesize sugars (carbohydrates). Heterotrophs like animals consume plants either directly (herbivores) or indirectly (carnivores). All living organisms carry on the process of respiration in which the biomolecules are broken down into simpler molecules and energy is released. The process of respiration can occur in the presence (aerobic) or absence of oxygen (anaerobic). Thus, the correct answer si option D.
Question 10
1 / -0

Write the reaction number in front of the following.
Anaerobic reaction is

A
5

B
3

C
2

D
1

Solution

In fermentation (5), by microorganisms like yeast, the incomplete oxidation of glucose is achieved under anaerobic conditions by sets of reactions where pyruvic acid (obtained from glucose during glycolysis) is converted to CO2 and ethanol. The enzymes, pyruvic acid decarboxylase, and alcohol dehydrogenase catalyse these reactions. Other organisms like some bacteria produce lactic acid from pyruvic acid under anaerobic conditions.

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Life Processes Test - 86

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Life Processes Test - 86

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Question 1

A- 3, B- 4, C- 2, D- 1

A- 4, B- 2, C- 3, D- 1

A- 4, B- 3, C- 2, D- 1

A- 4, B- 3, C- 1, D- 2

Solution

Question 2

Acidic

Alkaline

Neutral

First neutral and then acidic

Solution

Question 3

A- 4, B- 2, C- 3, D- 1

A- 4, B- 2, C- 1, D- 3

A- 2, B- 4, C- 3, D- 1

A- 4, B- 3, C- 2, D- 1

Solution

Question 4

The process of clotting will be affected.

Kwashiorkor will be the result.

RBC will be ruptured.

The blood will become more liquid.

Solution

Question 5

Pulmonary artery

Vena cava

Hepatic vein

Pulmonary vein

Solution

Question 6

(a) and (b)

(b) and (c)

(a) and (c)

None of the above

Solution

Question 7

Large intestine

Stomach

Colon

Small intestine

Solution

Question 8

Nutrition and metabolism

Respiration

Transportation and excretion

All of the above

Solution

Question 9

Food by heterotrophic organisms

Carbon dioxide, minerals and water by autotrophic organisms

Oxygen by all aerobic organisms

All of the above

Solution

Question 10

5

3

2

1

Solution

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