Which of the following is a component of a plasma membrane?

a. nucleic acids
b. glyconucleotides
c. glycolipids
d. amino acids


c. glycolipids

Biology & Microbiology

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The peptides bound by a single MHC protein share a common

A) C domain. B) peptide motif. C) V domain. D) nucleotide sequence.

Biology & Microbiology

During transcription, the synthesis of the mRNA strand proceeds in which direction?

A) 5' to 3' only B) 3' to 5' only C) Both 5' to 3' and 3' to 5' D) Either 5' to 3' or 3' to 5' E) First 5' to 3', and then 3' to 5'

Biology & Microbiology

Before Muller's discovery that radiation induces mutation, scientists had to work on mutations that were found solely by phenotype differences in natural populations

Which of the features of Drosophila made it a fortuitous choice for Morgan and his colleagues? A) having a long life cycle B) especially high rate of mutation C) large number of easily visible phenotypes D) well-known biochemical pathways E) the number of genes with only two alleles

Biology & Microbiology

Which of the following is not a characteristic of plasma-membrane carbohydrates?

a) all face outward into the extracellular space b) some are linked to lipids c) all float freely within the membrane d) more than 90% of them are linked to proteins

Biology & Microbiology