In a eudicot seed, which structure emerges
first?
a. embryonic shoot
b. embryonic root
c. coleoptile
d. cotyledons
e. the embryonic root and shoot emerge at the
same time
B
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Proteins are created with:
A. phosphodiester bonds. B. peptide bonds. C. triglycerides. D. polysaccharides.
Development proceeds such that each successive group of genes that are expressed refine and narrow the pattern of differentiation generated by previous groups
A. true B. false
Frozen human sperm were first used to conceive a child in
A) 1910. B) 1953. C) 1969. D) 1978.
What is the difference between an electrically neutral atom and an ion?
a. An ion has an unequal number of protons and electrons, while a neutral atom has an equal number. b. An ion has an equal number of protons and electrons, while an atom has an unequal number. c. An atom has an unequal number of neutrons and protons, while an ion has an equal number. d. An atom has its electrons in orbitals, while an ion has its electrons in its nucleus. e. An atom must have an equal number of neutrons and electrons, while an ion does not.