Confocal microscopes exhibit improved contrast and resolution by ________.
A. blocking out stray light with an aperture located above the objective lens
B. use of light at longer wavelengths
C. use of ultraviolet light to illuminate the specimen
D. illumination of a large area of the specimen
Answer: A
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After 5,730 years, we can predict that half the molecules of 14C will have been converted into ________
a. 14N b. 32P c. 12C d. 60Co
Mineral uptake in plants occurs by way of:
a. leaves b. roots c. stems d. phloem e. flowers
The sending of, reception of, and response to signals constitute animal
A) cost-benefit analysis. B) communication. C) problem solving. D) associative learning.
When the genomes of various organisms are compared, why is the genome size not directly correlated with gene number?
What will be an ideal response?