Animals with radial symmetry have a mesh of interconnected neurons called a ____.

A) nerve
B) nerve cord
C) nerve net
D) ganglia
E) brain

Which of the following algae are found in ponds and have chloroplasts that are arranged in a spiral?

A) Ulva
B) Spirogyra
C) Euglena
D) Chlamydomonas
E) Volvox

The levels of ____ in the blood are usually responsible for altering breathing patterns.

A) carbon dioxide
B) oxygen
C) nitrogen
D) hydrogen
E) hemoglobin

Which level of primary control in eukaryotic gene activity involves the speed of transport of mRNA from the nucleus into the cytoplasm?

A) pretranscriptional
B) transcriptional control
C) posttranscriptional control
D) translational control
E) posttranslational control

What part of a tRNA molecule will base pair with the codon of a mRNA molecule?

A) DNA sequence
B) anticodon
C) amino acid binding site
D) amino acid
E) promoter site

Signal-recognition particle RNA is involved in directing the ribosome-mRNA-polypeptide complex to the rough ER.