Smooth edged scales on fish like salmon and carp
A) ctenoid
B) cycloid
C) placoid
D) ganoid
Ans: B) cycloid
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Which molecules pick up and transfer H+ to the electron transport chain?
a. ATP b. oxygen c. phosphate d. acetyl-CoA e. NAD and FAD
What is the nutritional mode of most bacteria?
a. autotrophy b. heterotrophy c. chemoautotrophy d. photoheterotrophy e. chemoheterotrophy
A technique used in dating a rock can be used to accurately predict the age of the fossils occurring in the rocks. This technique involves
A. fossil dating. B. developmental geology. C. structural geology. D. radioactive isotope decay. E. successive rock layering.
Bacteria that can grow in the presence or absence of oxygen (O2) are called __________.
a. facultative anaerobes b. microaerophiles c. obligate aerobes d. obligate anaerobes