Other Biology Answers

The Leydig cells as found in the human body are the secretory source of :-
(1) glucagon
(2) androgens
(3) progesterone
(4) intestinal mucus

Which one of the following does not differ in E.coli and Chlamydomonas ?
(1) Cell wall
(2) Cell membrane
(3) Ribosomes
(4) Chromosomal Organization

A Water borne disease is

Cancer
small pox
hepatitis
tuberculosis

Acid Rain is caused by the air pollutant--

carbon monooxide
carbon dioxide
sulphur dioxide
nitrogen oxide

Cancer is a --
Genetice disease
Viral disease
Cellular disease
Old age disease

Correct statement from the following--

Natural selection discriminates variations
Natural selection brings about evolution
Natural selection is essential for evolutionary process
Natural selection is the other name of evolution

Definition of species is --

Species is a natural group of organisms
All members of a species are identical in morphology
Members of a species can interbreed among themselves
Members of a species can not breed with members of another species

The amount of DNA equivalent in G2 Phase of a cell is--
G: C ratio
A : T ratio
Sugar : phosphate ratio
Length of the DNA

The two strands of DNA double helix are--
complimentary and co parallel
complimentary and anti parrallel
non complimentary and parrallel
non complimentary and anti parrallel

The pigment in a photosynthesizing bacteria are located in--
chloroplast membrane
cytoplasm
Volutin membrane
thylakoid membrane