____ are examples of trace fossils
a. Skeletons
b. Shells
c. Seeds
d. Footprints
e. Leaves
ANSWER: d
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The finding that mutations in synapse genes are associated with many genetic disorders that have a behavioral component suggests that _____
a. individuals with these mutations lack synapses b. individuals with these mutations lack neurotransmitters c. malfunctions in presynaptic neurons cause abnormal behavior d. malfunctioning synapses are associated with abnormal behavior e. behavior disorders are attributable to environmental factors
A transmembrane protein differs from other membrane proteins because it:
a. is covalently linked to the outer surface of the plasma membrane. b. is a glycoprotein with carbohydrates attached. c. is attached to the inside of the membrane by an ionic bond. d. completely extends through the membrane. e. is completely embedded within the membrane
Desensitization of a cell to a ligand may involve each of the following except
A) destruction of the ligand. B) decrease in receptor ability to activate intracellular signaling pathway. C) receptor destruction. D) receptor endocytosis. E) decrease in receptor affinity for the ligand.
What is the condition called when your body's immune system overreacts to an otherwise harmless foreign particle?
A) Arthritis B) Allergy C) Diabetes D) SCID