Biology Questions

Q:

The lining of the marrow cavity is

A) Endosteum B) Sarcolemma
C) Episteum D) Periosteum
 
Answer & Explanation Answer: A) Endosteum

Explanation:

The marrow cavity is also known as the medullary cavity. It is the central cavity of bone shafts where adipose tissue is stored. It is lined with a thin, vascular membrane called endosteum.

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Q:

In photosynthesis________

A) Light energy is converted into chemical energy B) Chemical energy is converted into Light energy
C) Chemical energy is converted into electrical energy D) Light energy is converted into Mechanical energy
 
Answer & Explanation Answer: A) Light energy is converted into chemical energy

Explanation:
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Q:

Which of the following is not a function of proteins?

A) Build tissues such as bone and muscle B) Help to fight disease
C) Nail formation D) Store and transmit Heredity
 
Answer & Explanation Answer: D) Store and transmit Heredity

Explanation:

Protiens can help fight specific diseases, always there to regulate cell processes and build muscle/tissues.


Structural proteins also known as Fibrous proteins, are necessary components of your body. They include collagen, keratin and elastin. Collagen forms the connective framework of your muscles, bones, tendons, skin and cartilage. Keratin is the main structural component in hair, nails, teeth and skin.

 

  • Nucleic acids store and transmit heredity.
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Q:

How many Enzymes are there in the Human Body?

Answer

There are nearly about 75000 enzymes of 3 classes are there in the human body. They are :


1. Metabolic Enzymes - Enzymes that help to run our Bodies


2. Digestive Enzymes - Enzymes that help in digesting Food


3. Food Enzymes - Enzymes from raw foods that start our Food digestion.

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Q:

What sugar is found in RNA?

A) Deoxyribose B) Ribose
C) Pentose D) Sucrose
 
Answer & Explanation Answer: B) Ribose

Explanation:

RNA - ribonucleic acid is a type of nucleic acid. The sugar contained in it is called Ribose.

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Q:

How many Nucleotides make up a Codon?

A) 3 B) 4
C) 5 D) 6
 
Answer & Explanation Answer: A) 3

Explanation:

3 Nucleotides make up a Codon. 

The nucleotide triplet that encodes an amino acid is called a codon.

Each group of three nucleotides encodes one amino acid.

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Q:

Which event occurs during interphase?

A) Centrioles appear B) Spindle fibers begin to form
C) The cell grows D) Centromeres divide
 
Answer & Explanation Answer: C) The cell grows

Explanation:

The cell carries out the metabolic processes and it grows during interphase.

The cell cycle has three phases that must occur before mitosis, or cell division happens. These three phases are collectively known as interphase. They are G1, S, and G2.

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Q:

Tubes that bifurcate from the windpipe

A) Bronchi B) pleura
C) Apex D) Adenoids
 
Answer & Explanation Answer: A) Bronchi

Explanation:

Tubes that bifurcate from the windpipe are called Bronchi.

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