What is one cause for the 21,000 protein encoding sequences in the human genome producing between 200,000 and 1 million different proteins?
A) SNPs
B) CRISPR-Cas systems
C) alternative splicing
D) CNVs
E) restriction enzymes
Answer: C
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A channel that opens in response to changes in ionic charge across a membrane is called a(n) ____ channel
a. voltage-gated b. ligand-gated c. charge-gated d. electric-gated e. positive-gated
Vertebrate bone does not ________.
A. consist of cells and an extracellular matrix containing collagen fibers B. contain hydroxyapatite crystals C. contain sarcomere units D. become remodeled with use E. contain blood vessels
Populations of different kinds of organisms that interact with one another in a particular place are known as
A. ecosystems. B. communities. C. a biosphere. D. a commune.
The cyclic path that involves both biological and chemical processes of an ecosystem is called a ________.
A. biogeochemical pathway B. complete pathway C. complementary pathway D. hydrological pathway