Options:
- A. Biodiversity
- B. Phyletic lineage
- C. Connecting link
- D. Evolutionary line
View Answer
B. Phyletic lineage
Biology
Reverse transcriptase is present in____________?
Options:
- A. All RNA viruses
- B. All DNA viruses
- C. All retroviruses
- D. All viruses
View Answer
C. All retroviruses
Red to orange pigments are_____________?
Options:
- A. Carotenes
- B. Carotenoids
- C. Xanthophylls
- D. Chlorophyll
View Answer
A. Carotenes
Two or more populations of different species living and interacting in the same area form
Options:
- A. Biosphere
- B. Community
- C. Population System
- D. Ecosystem
View Answer
B. Community
Which character differentiates living things from non-living organisms?
Options:
- A. They live in the same ecosystem.
- B. They are highly organized and complex made of one or more cells and contain genetic material
- C. They are acted upon by the same environment
- D. Both a and b
View Answer
B. They are highly organized and complex made of one or more cells and contain genetic material
A structure formed by groups of similar cells organized into loose sheets or bundles performing similar functions is called as:
Options:
- A. An organ
- B. An organism
- C. A Tissue
- D. A Cell
View Answer
C. A Tissue
Which is an organic compound found in most cells ?
Options:
- A. Water
- B. Glucose
- C. Oxygen
- D. Sodium chloride
View Answer
B. Glucose
The major cell infected by the HIV is lymphocyte ?
Options:
- A. helper-T
- B. B
- C. both T and B
- D. none of these
View Answer
A. helper-T
Nitrogen is present in___________?
Options:
- A. carbohydrates
- B. proteins
- C. lipids
- D. carbonates
View Answer
B. proteins
All of the following are elements that plants need in very small amounts except___________?
Options:
- A. Iron
- B. Hydrogen
- C. Chlorine
- D. Copper
View Answer
B. Hydrogen