Four of the five choices listed below are related by
the quantity of chromosomes present. Select the
exception.
a. spores
b. sporophyte
c. egg
d. sperm
e. gametophyte
Answer: b
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DNA fragments can be separated in gel electrophoresis because
A. nitrogenous bases have a net negative charge. B. phosphate groups have a net negative charge. C. nitrogenous bases have a net positive charge. D. phosphate groups have a net positive charge.
12 H2O + 12 NADP+ + 18 ADP + Pi ? 6 O2 + 12 NADPH + 18 ATP summarizes the __________
reactions of photosynthesis. a. carbon fixation b. light-dependent c. light-independent d. CAM e. electron transport
How does the rate of extinction today compare to the rates in the past?
A) The rate is much lower today than it has been, on average, in the past. B) The rate is about the same today as it has been, on average, in the past. C) The rate is much higher today than it has been, on average, in the past. D) The extinction rate today can't be estimated or calculated.
The brain receives input from the proprioceptors, the eyes, and the vestibular nerve to help maintain our equilibrium.
Answer the following statement true (T) or false (F)