Biology Practice Question and Answer

Q:

The edible portion of mango is

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  • 1
    Embryo
    Correct
    Wrong
  • 2
    Endocarp
    Correct
    Wrong
  • 3
    Endosperm
    Correct
    Wrong
  • 4
    Mesocarp
    Correct
    Wrong
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Answer : 4. "Mesocarp"
Explanation :

(D) Mesocarp

The edible portion of a mango is the mesocarp, which is the fleshy and pulpy middle layer of the fruit. The outer skin (exocarp) is not typically consumed, and the inner seed (endocarp) is also not eaten. The mesocarp is the part that is juicy, sweet, and commonly enjoyed in various culinary applications, such as eating the fruit fresh, making juices, or incorporating it into salads and desserts.

Q: Photosynthesis contributes to plant growth by 1941 0

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    taking in carbon dioxide and making carbohydrates (sugars)
    Correct
    Wrong
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    converting sugar to oxygen and water
    Correct
    Wrong
  • 3
    taking in oxygen and making wood
    Correct
    Wrong
  • 4
    synthesizing carbon dioxide and making cellulose
    Correct
    Wrong
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Answer : 1. "taking in carbon dioxide and making carbohydrates (sugars)"
Explanation :

Answer: A) taking in carbon dioxide and making carbohydrates (sugars) Explanation: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms activities.

Q:

Poultry is a foreign breed of bird with a capacity to lay more eggs.

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  • 1
    White leghorn
    Correct
    Wrong
  • 2
    Broiler
    Correct
    Wrong
  • 3
    White Cornish
    Correct
    Wrong
  • 4
    New Hemisphere
    Correct
    Wrong
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Answer : 1. "White leghorn"
Explanation :

The option that represents a foreign breed of bird known for its capacity to lay more eggs is:

(A) White Leghorn

Explanation:

White Leghorn is a breed of chicken that originated in Italy but is widely used in many countries, including as a popular egg-laying breed in poultry farming. Leghorns are known for their prolific egg production, making them a common choice for commercial egg production.

The other options:

Broiler refers to chickens raised for meat.

White Cornish is a breed known for its meat qualities.

"New Hemisphere" does not appear to refer to a specific poultry breed.

So, the correct answer is (A) White Leghorn.

Q: Which of the following is true of kinetochores? 3655 0

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    They are the primary centrosome structures that maintain the attachment of the sister chromatids prior to mitosis.
    Correct
    Wrong
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    They are the sites at which microtubules attach to chromosomes.
    Correct
    Wrong
  • 3
    They are located at the center of the centrosome and organize tubulin into spindle fibers.
    Correct
    Wrong
  • 4
    They cross at the cell's equator and move against each other, causing the cell to elongate.
    Correct
    Wrong
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Answer : 2. "They are the sites at which microtubules attach to chromosomes."
Explanation :

Answer: B) They are the sites at which microtubules attach to chromosomes. Explanation: They are the sites at which microtubules attach to chromosomes.

Q: What process immediately preceeded protein synthesis at the ribosome? 1745 0

  • 1
    transcription
    Correct
    Wrong
  • 2
    replication
    Correct
    Wrong
  • 3
    translation
    Correct
    Wrong
  • 4
    duplication
    Correct
    Wrong
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Answer : 1. "transcription"
Explanation :

Answer: A) transcription Explanation: Protein synthesis at the ribosome is immediately preceeded by the transcription process.

Q: In what organelle does cellular respiration take place? 1233 0

  • 1
    Cytoplasm
    Correct
    Wrong
  • 2
    Ribosomes
    Correct
    Wrong
  • 3
    Mitochondria
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 3. "Mitochondria"
Explanation :

Answer: C) Mitochondria Explanation: Cellular respiration is the multi-step process that creates energy from nutrients and food molecules. It begins in the cytoplasm of the cell, with the mitochondria functioning as the main organelle where the rest of the process continues and finishes. During respiration, glycolysis occurs in the cytoplasm of the cell.

Q:

It causes clotting of blood – 

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    Thrombin
    Correct
    Wrong
  • 2
    Hemoglobin
    Correct
    Wrong
  • 3
    Pectin
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 1. "Thrombin "
Explanation :

The substance that causes the clotting of blood is:

(A) Thrombin

Thrombin is an enzyme that plays a crucial role in the blood clotting process. It is responsible for converting fibrinogen, a soluble plasma protein, into insoluble fibrin threads. These fibrin threads form a mesh that helps in the clotting of blood, particularly at the site of injury or wound. Therefore, option (A) Thrombin is the correct answer.

Q:

How many types of lavaks are based on color?

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  • 1
    2
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 2. "3"

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