________ is/are able to degrade infecting bacteriophage DNA, thus protecting the host cell.
A. Restriction endonucleases
B. Protection exonucleases
C. Modification methylases
D. Lysozyme
Answer: A
Biology & Microbiology
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Small circular pieces of bacterial DNA that are used as vectors in cloning experiments are called _____
A. phages B. viruses C. plasmids D. chromosomes
Biology & Microbiology
____ allow honeybees to navigate
a. Mechanoreceptors b. Chemoreceptors c. Thermoreceptors d. Photoreceptors e. Magnetoreceptors
Biology & Microbiology
The structure labeled A in Figure 27-1 is a:
a. gametangium of an alga.
b. gametangium of a plant.
c. germinating spore.
d. megasporangium of an alga.
e. megasporangium of a plant.
Biology & Microbiology
The ________ are the tubular structures that occur between the ovaries and the uterus
Fill in the blank(s) with correct word
Biology & Microbiology