Oxygen will form _____ covalent bonds with other atoms

1.1
2.2
3.3
4.4


2

Biology & Microbiology

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Which structure is common to plant and animal cells?

A) chloroplast B) wall made of cellulose C) central vacuole D) mitochondrion E) centriole

Biology & Microbiology

Which one of the following is absolutely necessary for diffusion to occur?

a. a living cell b. a phospholipid bilayer c. a selectively permeable membrane d. a concentration gradient e. a solution

Biology & Microbiology

Which of the following lists of groupings or taxons is in descending order, from most inclusive to least inclusive? Some lists may be missing some of the intermediate taxons.

a) family, order, class, species, genus b) class, family, species, order, phylum c) domain, phylum, family, class, species d) phylum, class, order, genus, family e) kingdom, class, family, genus, species

Biology & Microbiology

During an oxidation reaction,

a. the donor molecule gains an electron and becomes oxidized. b. the acceptor molecule loses an electron and becomes oxidized. c. the donor molecule loses an electron and becomes oxidized. d. the acceptor molecule gains an electron and becomes oxidized.

Biology & Microbiology