In the correct order from smallest to largest, list the levels of organization present in most animals.
What will be an ideal response?
Organelles, cells, tissues, organs, organ systems, and organism.
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Why are diseases such as rabies that have a wild animal reservoir so difficult to eradicate while other diseases such as brucellosis that reside in domestic animals have been virtually eradicated
What will be an ideal response?
The two strands of a DNA molecule are held together by ________
a. phosphodiester linkages b. covalent bonds c. peptide bonds d. hydrogen bonds
Birds hatch out of their eggs looking like small versions of the adult. This is an example of
A) genetic dwarfism. B) internal development. C) indirect development. D) direct development. E) external development.
Which of the following gated ion channels are involved in inhibitory synaptic signaling?
(a) voltage-gated Na+ channels (b) voltage-gated Ca2+ channels (c) glycine-gated Cl– channels (d) glutamate-gated cation channels How We Know: Squid Reveal Secrets of Membrane Excitability