Biology - Study Mode

[#391] ________ reproduces by binary fission.
Correct Answer

(A) Amoeba

Explanation

Solution: Amoeba reproduces by binary fission.

[#392] The DNA of the bacterium is found present in a distinct nuclear region called
Correct Answer

(C) Nucleoid

Explanation

Solution: The nucleoid (meaning nucleus-like) is an irregularly-shaped region within the cell of a prokaryote that contains all or most of the genetic material. In contrast to the nucleus of a eukaryotic cell, it is not surrounded by a nuclear membrane.

[#393] In autotrophic bacteria, where is chlorophyll located?
Correct Answer

(B) In the infolded plasma membrane

Explanation

Solution: In autotrophic bacteria, chlorophyll is located in the infolded plasma membrane.

[#394] Bacteria were first discovered by
Correct Answer

(D) A.V.Leeuwenhoek

Explanation

Solution: Two men are credited today with the discovery of microorganisms using primitive microscopes: Robert Hooke who described the fruiting structures of molds in 1665 and Antoni van Leeuwenhoek who is credited with the discovery of bacteria in 1676.

[#395] Among the many substances manufactured commercially by means of ________ are acetic acid, acetone, butanol, lactic acid and several vitamins.
Correct Answer

(B) Bacteria

Explanation

Solution: Among the many substances manufactured commercially by means of bacteria are acetic acid, acetone, butanol, lactic acid and several vitamins.