Options:
- A. bacteria
- B. fungi
- C. virus
- D. none of these
View Answer
A. bacteria
Biology
Blood is carried towards the heart by __________?
Options:
- A. Arteries
- B. Capillaries
- C. Veins
- D. none of these
View Answer
C. Veins
A large regional community primarily determined by climate is called ?
Options:
- A. Population
- B. Community
- C. Biome
- D. Habitat
View Answer
C. Biome
The branch of biology which deals with the study of social behavior and communal life of human beings living in any environment is called ?
Options:
- A. Environmental biology
- B. Social biology
- C. Human biology
- D. Both b and c
View Answer
B. Social biology
Most cell membranes are composed principally of ?
Options:
- A. DNA ad protein
- B. Protein and Lipids
- C. Protein and Chitin
- D. Protein and RNA
View Answer
B. Protein and Lipids
__________ is essential for the formation of hemoglobin.
Options:
- A. Calcium
- B. Iron
- C. Water
- D. Carbohydrates
View Answer
B. Iron
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 ?
Options:
- A. Environmental biologist
- B. Paleontologist
- C. Marine biologist
- D. Social biologist
View Answer
B. Paleontologist
Out of 92 naturally occurring chemical elements how many are considered as bio-elements?
Options:
- A. 6
- B. 16
- C. 26
- D. 15
View Answer
B. 16
Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the ?
Options:
- 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
View Answer
A. Concentration of water molecules inside and outside the cell
Organelles are_______________?
Options:
- A. Unicellular structures
- B. Multi-cellular structures
- C. Sub-cellular structures
- D. Non-cellular structures
View Answer
C. Sub-cellular structures