Which of the following is a function of plastids?

a. storing starches, proteins, and pigments
b. protecting the cell membrane from damage
c. modifying the DNA structure of an organelle
d. gathering energy from organic molecules


a. storing starches, proteins, and pigments

Biology & Microbiology

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Archaeoglobus is a true sulfate reducer that forms a phylogenetically distinct lineage within the Euryarchaeota

Indicate whether the statement is true or false.

Biology & Microbiology

In an XX embryo, ____ inactivation of one X chromosome usually occurs when the embryo has about 32 cells

a. phenotypic b. inhibited c. cascading d. selective e. random

Biology & Microbiology

List the 3 major groups of baleen whales and give their major features

What will be an ideal response?

Biology & Microbiology

To test the hydrogen-bond hypothesis for reduced affinity of the heme group for carbon monoxide

when the heme is associated with polypeptide chains, the researchers used which of the following model systems?

a. Mutated rat myoglobin. b. Mutated rat hemoglobin. c. Myglobin gene isolated from a bacteria and introduced into sperm whale. d. Myglobin gene isolated from a sperm whale and introduced into a bacteria. e. Hemoglobin gene isolated from a sperm whale and introduced into a bacteria.

Biology & Microbiology