Paired homologous chromosomes are found at
the spindle equator during
a. metaphase I.
b. telophase I.
c. prophase II.
d. metaphase II.
e. anaphase II.
A
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Total lung capacity is indicated by ____
a. A + B b. B + C c. C + E d. D + E e. E + A
A classification system based on evolutionary relationships is called a ________ system.
A. determinative B. systematic C. phylogenetic D. phenetic
Which sentence best describes fluorescence?
a. A pigment molecule accepts a high-energy electron and releases a photon of energy. b. A high-energy electron leaves its nucleus and moves to a different molecule. c. A high-energy electron returns to its ground state by releasing energy in a photon. d. A low-energy electron moves to a high-energy state by absorbing heat.
The RNA molecules that carry amino acids to the ribosomes during protein synthesis are called
A. primer RNA. B. transfer RNA. C. messenger RNA. D. ribosomal RNA. E. ribozymes.