Which organisms contain branched membrane lipids with ether linkages?

a. Eukarya
b. Mercaria
c. Archaea
d. Bacteria


Ans: c. Archaea

Biology & Microbiology

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Define in general terms the origin, insertion, and action of a skeletal muscle organ.

What will be an ideal response?

Biology & Microbiology

Which DNA damaging agent can transfer methyl groups (—CH3) to the nucleotide bases in DNA?

a. UV light b. Chemicals in tobacco smoke c. Ionizing radiation d. X-rays e. Free radicals

Biology & Microbiology

Why do scientists hypothesize that RNA was the first form of genetic material?

A. RNA can store genetic information and form membranes. B. RNA can store genetic information. C. RNA can catalyze reactions. D. RNA can catalyze reactions and store genetic information. E. RNA can catalyze reactions and form membranes.

Biology & Microbiology

Which of the following is true about Gregor

Mendel when he first started his experiments?

a. Mendel worked with garden pea plants. b. Mendel knew that some plants "breed true." c. He knew that genes were responsible for observable traits. d. Mendel worked on garden pea plants and knew that some plants "breed true." e. Mendel worked on garden pea plants. He knew that some plants "breed true" and that genes were responsible for observable traits.

Biology & Microbiology