Cells with a nucleus are called __________; cells without a nucleus are called __________

A. animals; plants
B. prokaryotes; eukaryotes
C. eukaryotes; yeast
D. bacteria; animals
E. eukaryotes; prokaryotes


Answer: E

Biology & Microbiology

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The GAL gene system in yeast is used to metabolize galactose. In the presence of galactose, the GAL genes are expressed; however, in the absence of galactose, the GAL genes are repressed. A yeast mutant is discovered that continuously expresses the GAL

genes in the presence or absence of galactose. Which GAL gene is likely mutated? A) GAL3 B) GAL4 C) GAL1 D) GAL 10 E) GAL180

Biology & Microbiology

Homologous chromosomes are identical copies of each other.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Electrons from photosystem I are transferred down an electron transport chain to ________, which become reduced to ________

A) NADPH; NADP+ B) NAD+; NADPH C) ADP; ATP D) NADP+; NADPH

Biology & Microbiology

________ or steam sterilization is the process by which steam is heated under pressure to sterilize objects.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology