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

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

Most cell membranes are composed principally of ?

A. Dna ad protein
B. Protein and lipids
C. Protein and chitin
D. Protein and rna

Which of the following pathogen type cause disease that can be treated with antibiotics ?

A. Bacteria
B. Fungi
C. Virus
D. None of these

Different species of plants and animals living in the same habitat is called?

A. Population
B. Community
C. Biome
D. Habitat

The evaporative cooling in the respiratory tract of dogs is called?

A. Vasodilation
B. Vasoconstriction
C. Panting
D. All of these

Group of living organisms of the same species living in the same place at the same time is called ?

A. Community
B. Population
C. Ecosystem
D. Biome

Production of sweat and sebum is related with ?

A. Skin
B. Liver
C. Lungs
D. Git

In animals coordination is achieved by means of?

A. Nervous system
B. Endocrine system
C. Respiratory system
D. Both a and b

Haemodialysis means cleaning of____________?

A. Urine
B. Blood
C. Glomerular filterate
D. Coelomic fluid