What are microfilaments assembled from?

a. keratins
b. tubulins
c. actins
d. myosins


Ans: c. actins

Biology & Microbiology

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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

Biology & Microbiology

Errors in nucleotide sequence that occurs during replication CANNOT be corrected.

a. true b. false

Biology & Microbiology

Cell mediated immunity (CMI) is important for resistance against

A. tumors B. viruses C. foreign cells D. intracellular bacteria E. all of the above

Biology & Microbiology

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?

Biology & Microbiology