What are microfilaments assembled from?
a. keratins
b. tubulins
c. actins
d. myosins
Ans: c. actins
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Match the following items with the correct phrases.
_______1. Membrane-bound organelles where photosynthesis occurs. _______2. The sites of protein synthesis in procaryotic cells. _______3. Considered a “packaging plant,” where proteins are packaged into membrane-bound vesicles. _______4. Membrane-bound organelles where energy is produced by the Krebs cycle and electron transport chain. _______5. Found in procaryotic cells as well as eucaryotic cells. a. plastids b. mitochondria c. ribosomes d. endoplasmic reticulum e. golgi complex
Errors in nucleotide sequence that occurs during replication CANNOT be corrected.
a. true b. false
Cell mediated immunity (CMI) is important for resistance against
A. tumors B. viruses C. foreign cells D. intracellular bacteria E. all of the above
Change in chromosome structure in which the end of a chromosome breaks off or two simultaneous breaks lead to the loss of an internal segment; often causes abnormalities—e.g., cri du chat syndrome.
What will be an ideal response?