If an ecologist is studying the cycling of carbon through a particular environment (which involves the movement of carbon through living things as well as through rock, air, and water), the scientist is studying at what level of ecology?
a. community
b. biosphere
c. ecosystem
d. organismal
e. population
C; This is an ecosystem-level study because it involves both the living and the nonliving components of a particular environment.
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Which of the following produces the most ATP during aerobic respiration?
A. Fermentation B. TCA cycle C. Glycolysis D. Electron transport chain and chemiosmosis E. Susbstrate level phosphorylation
A secondary oocyte is released from the ovary and travels down the oviduct. _____
A) Human chorionic gonadotropin
B) Zygote
C) Chorion
D) Morula
E) Folic acid
F) Fertilization
G) Blastocyst
H) Parturition
I) Cleavage
J) Ovulation
K) Placenta
L) Implantation
Arteries carry ____
a. blood toward the heart b. blood away from the heart c. only oxygen-rich blood d. only oxygen-poor blood e. a combination of more than one of these
The probability of tossing a coin and having it be heads or tails is
A. 1/4. B. 2. C. 0. D. 1. E. 1/2.