A root hair is an extension of an endodermal cell

____________________ Indicate whether the statement is true or false.


F, epidermal

Biology & Microbiology

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Why are fermentation reactions important for cells?

A) They produce alcohol, which enhances the permeability of their mitochondrial membranes to proton translocation. B) They regenerate NAD+ so that glycolysis can continue to operate. C) They allow the cell to conserve oxygen for the citric acid cycle. D) They generate oxygen.

Biology & Microbiology

The invariant amino acids in each peptide motif bound by MHC proteins are called

A) anchor residues. B) MHC peptides. C) antigen-binding immunoglobulins. D) TCR peptides.

Biology & Microbiology

Telomeres are found ____

a. in the middle of chromosomes b. at replication origins c. where DNA strands are joined together d. within genes e. at the ends of chromosomes

Biology & Microbiology

About ________ percent of human genes are alternately spliced.

A) 10 B) 40 C) 75 D) 90

Biology & Microbiology