Which of the following is CORRECT about the prokaryotes known as deeply branching bacteria?
A. They are chemoheterotrophs.
B. They lack peptidoglycan walls.
C. They are commonly found in acidic, anaerobic conditions.
D. They grow in long branching filaments.
E. They are photosynthetic.
Answer: C
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Which of the following E. coli polymerases functions in the replication of the chromosome?
A. DNA Pol I B. DNA Pol II C. DNA Pol III D. DNA Pol IV E. both DNA Pol II and Pol IV
Recessive traits are expressed only in the homozygous state
a. True b. False Indicate whether the statement is true or false
Humans contract Chagas disease when the reduviid bug defecates while taking a blood meal and the parasites in the feces are rubbed or scratched into the bite wound or onto mucosal surfaces. Which stage in the blood infects the host cells?
a. Amastigote b. Epimastigote c. Trypomastigote d. Promastigote
A male turkey that imprinted onto a human at hatching is transferred as an older juvenile to a flock of "normal" turkeys. When this turkey reaches sexual maturity, he will probably try to court
A) male, female, or immature turkeys indiscriminately. B) immature male turkeys. C) mature female turkeys. D) humans.