Fish and shellfish resources are considered:
a. inexhaustible.
b. finite.
c. renewable.
d. transferable.
e. inorganic.
C
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Viruses that kill their host cells during each cycle of infection are called
a. virulent bacteriophages. b. bacteriophages. c. temperate bacteriophages. d. phages. e. avirulent bacteriophages.
Transport proteins _____
a. are found only in eukaryotic cells b. allow only small molecules and ions to cross the membrane c. are required for small nonpolar molecules to cross the membrane d. allow ions and polar molecules to cross the membrane e. are peripheral membrane proteins
The organisms shown here are examples of _____
1.fruiting bodies of club fungi
2.diploid ascospores resulting from mitosis
3.branching haploid mycelium
4.a multicelled body consisting of fungus and an alga or bacterium
Which of the following is a native protein isolated from bacteria and used to soften cotton fibers in jeans and other clothes?
A) Cellulase B) Amylase C) Chymosin D) Penicillin E) Polymerase