When acetyl CoA enters the Krebs cycle, the first molecule produced is:
A) succinic acid.
B) oxaloacetatic acid.
C) citric acid.
D) malic acid.
E) ?-ketoglutaric acid.
Answer: C
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In a population of grizzly bears, the largest adults are most likely to survive and reproduce, while the smallest adults lose most competitions for resources and produce fewer offspring. This is an example of ________ selection
a. stabilizing b. directional c. disruptive d. sexual
Which of the following organelles contain enzymes involved in cellular digestion?
A. lysosomes and chloroplasts B. peroxisomes and smooth endoplasmic reticulum C. lysosomes and Golgi apparatus D. lysosomes and peroxisomes E. chloroplasts and rough endoplasmic reticulum
Monogamous mating systems are most common when resources are _______ and offspring require _______ amounts of parental care from both parents.
Fill in the blank(s) with the appropriate word(s).
The method of uncovering general principles by carefully using the scientific method is called ________ reasoning.
Fill in the blank(s) with the appropriate word(s).