Biology Mcqs

A series of hypothesis supported by the results of many tests is called ?

• (A)  Scientific law
• (B)  Theory
• (C)  Data
• (D)  Deduction

Answer

Submitted By :Ali Uppal

Which is an organic compound found in most cells ?

• (A)  Water
• (B)  Glucose
• (C)  Oxygen
• (D)  Sodium chloride

Answer

Submitted By :Ali Uppal

Biological sciences have a set methodology and it is based on ?

• (A)  Experimental inquiry
• (B)  Esthetic preference
• (C)  Philosophical ideas
• (D)  Imaginations

Answer

Submitted By :Ali Uppal

Proteins are made from amino acids by the process of ______________?

• (A)  Hydrolysis
• (B)  Pinocytosis
• (C)  Dehydration synthesis
• (D)  Active transport

Answer

Submitted By :Ali Uppal

An unbroken series of species arranged in ancestors to descendent sequence with each later species having evolved from one that immediately preceded it is called?

• (A)  Biome
• (B)  Phyletic lineage
• (C)  Community
• (D)  Population

Answer

Submitted By :Ali Uppal

Sodium ions are “pumped” from a region of lower concentration to a region of higher concentration in the nerve cells of humans. This process is an example of

• (A)  Diffusion
• (B)  Passive transport
• (C)  Osmosis
• (D)  Active transport

Answer

Submitted By :Ali Uppal

It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect?

• (A)  Older sediment layers have equal amount of these radioactive isotopes as that of the young ones
• (B)  Older sediment layers have less amount of these radioactive isotopes as that of the young ones.
• (C)  Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
• (D)  Older sediment layers did not have these radioactive isotopes

Answer

Submitted By :Ali Uppal

Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ?

• (A)  Concentration of water molecules inside and outside the cell
• (B)  Concentration of enzymes on either side of the cell membrane
• (C)  Rate of molecular motion on either side of the cell membrane
• (D)  None of these

Answer

Submitted By :Ali Uppal

The concept that various organisms dominated this planet during various geological time period and thus placing organisms in a time squence came from the studies by ?

• (A)  Environmental biologist
• (B)  Paleontologist
• (C)  Marine biologist
• (D)  Social biologist

Answer

Submitted By :Ali Uppal

Most cell membranes are composed principally of ?

• (A)  DNA ad protein
• (B)  Protein and Lipids
• (C)  Protein and Chitin
• (D)  Protein and RNA

Answer

Submitted By :Ali Uppal