Which domains contain organisms that lack a membrane bound nucleus?


(a). Archaea & Bacteria
(b). Archaea & Eukarya
(c). Bacteria & Eukarya
(d). Eukarya & Animalia
(e). Archaea & Animalia


(a). Archaea & Bacteria

Biology & Microbiology

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A codon consists of two nucleotides

Indicate whether this statement is true or false.

Biology & Microbiology

In most eumetazoans, the innermost tissue layer during development is the ____

a. mesoderm b. epiderm c. mesoglea d. endoderm e. ectoderm

Biology & Microbiology

Which of the following builds up between the two

membranes of the mitochondria? a. pyruvate b. acetyl-CoA c. hydrogen ions d. electrons e. NADH

Biology & Microbiology

Oats are eaten by humans as oatmeal or rolled oats, and as feed for livestock such as cattle. In order for an oat plant to make the part we eat (the seed), it must flower and be pollinated. Typically, oat plants flower when days are lengthening (i.e., late spring to early summer). What is the best classification for oat plants?

A) long night B) short night C) night neutral D) short day

Biology & Microbiology