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
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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
Homologous chromosomes are identical copies of each other.
Answer the following statement true (T) or false (F)
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
________ 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).