Answer the following questions true (T) or false (F)
1. Images of living specimens can be produced using atomic force microscopes.
2. Specimens are visible on a phase contrast microscope because they refract the light that illuminates them.
3. Reactions that are both catabolic and anabolic are amphibolic.
1. TRUE
2. TRUE
3. TRUE
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Genes that have DNA sequences similar to functional genes but that do not appear to produce any functional product are ________________.
Fill in the blank(s) with the appropriate word(s).
The following is not a heavy metal toxin:
a. DDT. b. mercury. c. lead. d. zinc. e. copper.
In humans, goosebumps are a vestige of a mammalian adaptation related to ________
A) thermoregulation B) water conservation C) osmoregulation D) positive feedback
Which kingdom possesses unicellular animal-like species and unicellular plantlike species?
A) Animalia B) Protista C) Fungi D) Plantae