How are termite-related protists and aphid-related proteobacteria similar?
A. Both are types of endosymbiotic bacteria.
B. Both are parasites to their respective hosts.
C. Both are protozoans that live within insect hosts.
D. Both are mutualists with their respective hosts.
Answer: D
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Crops that are resistant to the herbicide Roundup ____
a. express the enzyme degraded by Roundup at high levels so that not all of the enzyme is inhibited b. have an extra coating outside their cell wall that inhibits Roundup from entering the cells c. contain a bacterial version of the chloroplast enzyme inhibited by Roundup d. produce a compound that degrades Roundup e. do not have the membrane channels through which Roundup enters the plant
Which period is the most recent?
a. Triassic b. Silurian c. Devonian d. Permian e. Cambrian
In humans, normal skin dominates albino skin; a cross between two albino people results in
A. two normal and two albino. B. all normal. C. all albino. D. three albino and one normal.
Antibodies detected by reacting rickettsial antigens with specific antibody followed by use of an anti-immunoglobulin with a fluorescent tag could be used to diagnose:
A) Rocky Mountain spotted fever B) Mycoplasma pneumonia C) stomach ulcers D) rheumatic fever