Biology Questions Practice Question and Answer

Q:

"B" represents the gene for brown coat colour and “b” represents the gene for white coat colour. In the cross BB x bb all the offsprings have a brown coat. Which genetic principle is illustrated by this cross?

919 0

  • 1
    Multiple alleles
    Correct
    Wrong
  • 2
    Dominance
    Correct
    Wrong
  • 3
    Co-dominance
    Correct
    Wrong
  • 4
    Crossing-over
    Correct
    Wrong
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Answer : 2. "Dominance "

Q:

Are carriers of infectious diseases?

918 0

  • 1
    fly
    Correct
    Wrong
  • 2
    Dogs
    Correct
    Wrong
  • 3
    Mosquito
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 4. "None of these"

Q:

Match the columns.
 Nutrients                   Examples
 a. Protein                  I. Calcium, Phosphorous
 b. Carbohydrates    II. Cholesterol
 c. Fat                        III. Glucose
 d. Minerals              IV. Myosin

911 0

  • 1
    a-i, b-iii, c-ii, d-iv
    Correct
    Wrong
  • 2
    a-iii, b-iv, c-ii, d-i
    Correct
    Wrong
  • 3
    a-i, b-ii, c-iii, d-iv
    Correct
    Wrong
  • 4
    a-iv, b-iii, c-ii, d-i
    Correct
    Wrong
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Answer : 4. "a-iv, b-iii, c-ii, d-i"
Explanation :

Explanation:
 Nutrient                 Example

Protein                    Myosin

Carbohydrate         Sugar

Fat                            Cholesterol

Minerals Calcium, Phosphorus

1. Protein is one of the essential nutrients for the body. It is essential for building and repairing muscles, skin, hair, nails and other tissues. Myosin is a protein responsible for muscle contraction.

2. Carbohydrates are the main source of energy for the body. They are found in the form of starch, glucose and fiber. Sugar is a type of carbohydrate that is easily digested by the body and provides energy.

3. Fats are essential nutrients for the body. They help keep the body warm, produce hormones, and build cell walls. Cholesterol is a type of fat made by the body. It is essential for the body, but in excess can cause health problems.

4. Minerals are essential nutrients for the body. They form structural components of the body, help produce hormones, and regulate body functions. Calcium and phosphorus are two important minerals that are necessary for the formation of bones and teeth.

Q:

Which of the following body parts is directly affected in the disease called rickets?

907 0

  • 1
    Eyes
    Correct
    Wrong
  • 2
    Tongue
    Correct
    Wrong
  • 3
    Spleen
    Correct
    Wrong
  • 4
    Bones
    Correct
    Wrong
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Answer : 4. "Bones"
Explanation :

1. Rickets is a bone disease caused by vitamin D deficiency.

2. Due to rickets, the absorption of calcium and phosphorus in the bones decreases.

3. The solution to protect exclusively breastfed babies from this disease is Vitamin D supplements.

Q:

Is the medium for spreading infectious diseases?

901 0

  • 1
    Water
    Correct
    Wrong
  • 2
    Air
    Correct
    Wrong
  • 3
    both
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "both"

Q:

A disease named tuberculoris arises?

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  • 1
    Bacteria
    Correct
    Wrong
  • 2
    Malnutrition
    Correct
    Wrong
  • 3
    Protozoa
    Correct
    Wrong
  • 4
    by virus
    Correct
    Wrong
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Answer : 1. "Bacteria"

Q:

Which of these is not a characteristic of the iris?

900 0

  • 1
    It is opaque
    Correct
    Wrong
  • 2
    It is a part of the sclera
    Correct
    Wrong
  • 3
    It is a continuation of the ciliary bodies
    Correct
    Wrong
  • 4
    It is pigmented
    Correct
    Wrong
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Answer : 2. "It is a part of the sclera"

Q:

Yeast is an important source of

898 0

  • 1
    Vitamin C
    Correct
    Wrong
  • 2
    Protein
    Correct
    Wrong
  • 3
    Vitamin B
    Correct
    Wrong
  • 4
    Invertase
    Correct
    Wrong
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Answer : 3. "Vitamin B"

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