Biology - Study Mode

[#331] The term biology is derived from the language
Correct Answer

(D) Greek

Explanation

Solution: The word biology is derived from the greek words "bios" meaning life and "logos" meaning study and is defined as the science of life and living organisms.

[#332] Which structure is common to plant and animal cells?
Correct Answer

(D) Mitochondria

Explanation

Solution: Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane. Plant cells have three extra components, a vacuole, chloroplast and a cell wall.

[#333] Which observation proves that a cell is a eukaryote?
Correct Answer

(D) It has DNA inside a nucleus

Explanation

Solution: A eukaryotic cell is a cell which exhibit membrane-bound organelles. They exhibit a well-defined membrane bound nucleus in which the DNA (deoxyribonucleic acid) resides it is the genetic material which is passed on from parents to their offsprings.

[#334] Physical basis of life is
Correct Answer

(C) Protoplasm

Explanation

Solution: According to Huxley the protoplasm is the physical basis of life. Inside the cell wall of living cell the living substance is known as protoplasm. The protoplasm is a thick fluid or jellylike substance.

[#335] Where does cellular respiration take place in the cell?
Correct Answer

(B) Mitochodria

Explanation

Solution: The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion. The folds in the inner membrane are called cristae.