In principle, gene expression can be controlled at any of the steps between a gene and its ultimate functional product. For the majority of genes, however, the __________ is the most important point of control. Because this control point can ensure that no unnecessary intermediates are synthesized.

A) Replication.
B) Transcription
C) Translation.
D) PCR.


Ans: B) Transcription

Biology & Microbiology

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Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?

A) lipids B) glycogen C) proteins D) cellulose E) nucleic acids

Biology & Microbiology

The transforming principle that Griffith described from his work with Streptococcus pneumoniae

bacteria turned out to be ____.

a. a polysaccharide capsule b. a phospholipid c. protein d. RNA e. DNA

Biology & Microbiology

Signals from motor neurons result in action potentials in muscle fibers, which in turn causes the __________ to

release stored calcium ions. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Muscle contraction works through the process of sliding two kinds of muscle filaments past each other.

a. true b. false

Biology & Microbiology