Biology Questions

Q:

Where does meiosis take place in bryophytes?

A) Capsule B) Protonema
C) Antheridia D) None of the above
 
Answer & Explanation Answer: A) Capsule

Explanation:

Meiosis takes in the capsule of the Bryophytes.

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Q:

Which of the following is considered a modified stem?

A) Tendril B) Taproot
C) Petiole D) Tuber
 
Answer & Explanation Answer: D) Tuber

Explanation:

Tuber is considered as a modified stem. These type of stems carry out special functions that are important for the plant to survive. Tubers serves as a food reserve and bearing buds wherein new plants can grow.

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Q:

Which best describes Genes?

A) long, double chains of nucleic acids. B) long, single chains of amino acids.
C) long, single chains of nucleic acids. D) long, double chains of amino acids.
 
Answer & Explanation Answer: A) long, double chains of nucleic acids.

Explanation:

Gene is a segment of chromosomal DNA or a sequence of DNA or RNA that codes for a molecule that has a function. It is the basic physical and functional unit of heredity.

 

As genes are made up of DNA it impies that they are long, double chains of nucleic acids as DNA is made of nucleic acids.

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Q:

The principle of dominance states that

A) Some alleles are dominant, while others are recessive B) All alleles are recessive
C) All alleles are dominant D) Alleles are neither dominant nor recessive
 
Answer & Explanation Answer: A) Some alleles are dominant, while others are recessive

Explanation:

The principle of dominance states that some alleles are dominant, while others are recessive.

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Q:

Reflex actions are controlled by

A) The Spinal Chord B) The Nerves
C) The cells D) The Brain
 
Answer & Explanation Answer: A) The Spinal Chord

Explanation:

A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.

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Q:

The fluid mosaic model describes the structure of

A) cell B) plasma membrane
C) nucleus D) All of the above
 
Answer & Explanation Answer: B) plasma membrane

Explanation:
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Q:

Which membrane is highly convoluted?

A) the chloroplast outer membrane B) chloroplast inner membrane
C) both the mitochondrial and chloroplast outer membranes D) mitochondrial inner membrane
 
Answer & Explanation Answer: D) mitochondrial inner membrane

Explanation:
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Q:

Which among the following blood protein regulates the amount of water in plasma?

A) Albumin B) Fibulin
C) Globulin D) Fibrin
 
Answer & Explanation Answer: A) Albumin

Explanation:

The blood protein Albumin regulates the amount of water in plasma.

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