The technique used to make millions of identical copies of DNA from a small sample in a test tube is ________
Fill in the blank(s) with correct word
polymerase chain reaction or PCR (either term can be used here)
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Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and eggs that fuse to form offspring. Algae in the genus Caulerpa typically grow to a length of over half a meter and have structures similar to stems, leaves, and roots. Reproduction occurs when adults produce sperm and
eggs that fuse to form offspring. Each adult Caulerpa consists of just a single cell, however. Which of the following statements is true? A) Caulerpa violate the pattern component of the cell theory that all organisms consist of cells. B) Caulerpa violate the process component of the cell theory that all cells come from preexisting cells. C) Caulerpa violate both the pattern and process components of the cell theory. D) The existence of Caulerpa is consistent with the cell theory.
Nitrogenous waste is excreted from Malpighian tubules mainly in the form of
a. nitrate. b. ammonia. c. uric acid. d. amino acids. e. urea.
The colonial theory of animal origins states that animals ____
a. migrated on land from sponge colonies in the ocean b. originated in the colonial geologic period c. evolved from autotrophic green alga colonies d. evolved from a heterotrophic protist that formed colonies e. colonized land before they colonized the seas
What is similar about G protein-coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs)?
A. Both can activate phospholipase C B. Both are activated by autophosphorylation C. Both are enzymes D. Both are directly bound to G proteins