Specialized cells found at the base of the epidermis that produce pigments that help give skin its color are called ________
A) melanin
B) melanocytes
C) basal
D) lacunae
B
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After looking at the experiment in the figure above, what can be said about productivity in marine ecosystems?
A) Nothing can be said based on this information. B) Marine organisms break down iron for energy and thus for productivity. C) Iron can be a limiting nutrient in productivity. D) Productivity increases when chlorophyll a is added.
Without proofreading, the rate of DNA replication errors in bacteria and eukaryotes is as high as one for every ____
nucleotides assembled.
a. 10 to 100 b. 100,000 to 1,000,000 c. 1,000 to 10,000 d. 10,000,000 to 100,000,000 e. 100,000,000 to 1,000,000,000
The method of using RFLPs to identify bacterial or viral pathogens is called
A. proteomics. B. DNA fingerprinting. C. genetic screening. D. DNA sequencing.
All populations of all species in a specified area __________
Fill in the blank(s) with the appropriate word(s).