Which level of primary control in eukaryotic gene activity involves changes in the polypeptide chain before it becomes functional?
A. translational control
B. transcriptional control
C. posttranslational control
D. feedback control
E. posttranscriptional control
Answer: C
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Which groups of commercially grown plants are produced by tissue culture propagation?
a. Pine trees b. Orchid c. Grape vines d. Grasses e. Rose bushes
Which of the following leukocytes are classified as granulocytes?
a. monocytes b. lymphocytes c. macrophages d. natural killer cells e. neutrophils
Which cells are connected to companion cells via plasmodesmata?
a. guard cells b. trichomes c. sieve tube members d. tracheids
The basic categories of hormones are peptide or proteins, steroids, and aminoacid derivatives. The chemical properties of each hormone type determine someof its functional properties and how it must interact with receptors to signal to the cell.A new hormone is discovered. Tests reveal that it is small, hydrophilic, and degraded by a protease. What type of hormone is it?
A. Amino acid derivative B. Steroid C. Peptide D. Prostaglandin E. Glucocorticoid