Which biome is characterized as having a layer of permafrost covering its soil year-round?

A. tundra

B. chaparral

C. savanna

D. taiga

E. temperate coniferous forest


A. tundra

Biology & Microbiology

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Mutations that result in the production of much less of a protein or a protein that functions less efficiently than wild type are

A) null mutations. B) hypomorphic mutations. C) hypermorphic mutations. D) conditional mutations. E) neomorphic mutations.

Biology & Microbiology

Sphynx cats have a mutation in a(n)_____ of the keratin gene, which prevents necessary splicing; therefore, keratin

protein fibers do not assemble properly.

a. promoter b. intron-exon splice site c. exon d. stop codon e. enhancer

Biology & Microbiology

Meiosis is indicated by the letter ____

a. A b. B c. C

d. D e. E

Biology & Microbiology

Magnesium chloride is a salt formed with ionic bonds between one magnesium ion and two chloride ions. Magnesium has two electrons in its outer shell and chlorine has seven electrons in its outer shell. How are the electrons transferred between these atoms?

A. Both magnesium and chlorine are reduced. B. Magnesium is oxidized and chlorine is reduced. C. Both magnesium and chlorine are oxidized. D. Chlorine is oxidized and magnesium is reduced.

Biology & Microbiology