You discover an organism that has a nucleus but no mitochondria. This organism could be a(n) ____
a. euglenoid
b. diplomonad
c. kinetoplastid
d. ciliate
e. dinoflagellate
ANSWER: b
Biology & Microbiology
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a. true b. false
Biology & Microbiology
What is an immune system cell that binds to an antigen?
A) antibody B) immunoglobulin C) T cell D) macrophage
Biology & Microbiology
During inhalation, air leaving the nasal cavity passes into the
A) pharynx. B) bronchi. C) bronchioles. D) trachea. E) larynx.
Biology & Microbiology
The carotenoid pigments of some phototrophs interact with ________ to reduce its toxicity
A) singlet oxygen (1O2) B) hydroxyl radical (HO-) C) peroxide anion (O22-) D) superoxide radical (O2-) E) molecular oxygen (O2)
Biology & Microbiology