Biology Questions

Q:

In which organ RBC are selectively destroyed/recycled by macrophages?

A) Kidney B) Pancreas
C) Spleen D) Liver
 
Answer & Explanation Answer: C) Spleen

Explanation:

Spleen is called as the graveyard of RBC Red Blood Cells where they are selectively destroyed/recycled by macrophages.

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Q:

Which organelle is the control center of a cell?

A) Nucleus B) Cytoplasm
C) Cell membrane D) endoplasmic reticulum
 
Answer & Explanation Answer: A) Nucleus

Explanation:

Nucleus serves as the control center for cell metabolism and reproduction.

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Q:

What structure separates the colon from the small intestine?

what_structure_separates_the_colon_from_the_small_intestine1539329010.jpg image

A) ileocecal valve B) Epiglottis
C) Sphincter D) None of the above
 
Answer & Explanation Answer: A) ileocecal valve

Explanation:
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Q:

Cells with similar markers stick together and function as

A) Organs B) Tissues
C) Systems D) Organisms
 
Answer & Explanation Answer: B) Tissues

Explanation:

A tissue is an ensemble of similar cells and their extracellular matrix from the same origin that together carry out a specific function.

 

Hence, Cells with similar markers stick together and function as tissues.

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Q:

Which of the following organelle is known as the 'Power House' of the cell?

A) Golgi Bodies B) Ribosomes
C) Mitochondria D) None of these
 
Answer & Explanation Answer: C) Mitochondria

Explanation:

Mitochondria are known as 'Power House' of the cell because they produce energy in the form of ATP.

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Q:

ATP is a compound that is synthesized when

A) digestive enzymes break amino acids into smaller pieces B) energy stored in nitrogen is released froming amino acids
C) energy is stored in chemical bonds is released during cellular respiration D) chemical bonds between carbon atoms are formed by during photo synthesis
 
Answer & Explanation Answer: C) energy is stored in chemical bonds is released during cellular respiration

Explanation:
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Q:

Closely stacked flattened sacs (plants only)

A) Vacuoles B) Lysosomes
C) Golgi apparatus D) None of the above
 
Answer & Explanation Answer: C) Golgi apparatus

Explanation:
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Q:

Synapsis occurs during

A) Mitosis B) Meiosis
C) Both A & B D) None
 
Answer & Explanation Answer: B) Meiosis

Explanation:

Synapsis is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them.

Synapsis takes place during prophase I of meiosis.

It is also called as Syndesis.

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