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The release of ____ into the blood would increase the heart rate.
The release of ____ into the blood would increase the heart rate.A . renninB . ANPC . norepinephrineD . insulinView AnswerAnswer: C Explanation: Norepinephrine (as well as epinephrine), released by the adrenal glands, stimulates the sympathetic nervous system. A consequence of norepinephrine and epinephrine on the heart is an increase...
Which of the following would NOT occur during sympathetic stimulation?
Which of the following would NOT occur during sympathetic stimulation?A . secretion of glucagonB . dilation of bronchiolesC . dilation of intestinal blood vesselsD . dilation of pupilsView AnswerAnswer: C Explanation: The blood flow to visceral organs decreases during sympathetic stimulation, but increases under parasympathetic stimulation. One function of the...
Leaves have parallel veins:
Leaves have parallel veins:A . MonocotsB . Nonvascular plantsC . GymnospermsD . DicotsE . AngiospermsView AnswerAnswer: A Explanation: Monocots differ from dicots in that they have one cotyledon, or embryonic leaf in their embryos. They also have parallel veination, fibrous roots, petals in multiples of three, and a random arrangement...
An action potential would travel fastest in:
An action potential would travel fastest in:A . unmyelinated, thick axonB . myelinated, thick axonC . unmyelinated, thin axonD . myelinated thin axonView AnswerAnswer: B Explanation: Axons are thin or thick bundles of nerve fibers. The thicker an axon is, the more quickly an action potential will travel through it....
Which of the following lists the correct taxonomic order from most inclusive to least inclusive?
Which of the following lists the correct taxonomic order from most inclusive to least inclusive?A . Kingdom, Order, Class, SpeciesB . Order, Family, Genus, PhylumC . Order, Family, Genus, SpeciesD . Phylum, Order, Species, GenusView AnswerAnswer: C Explanation: Kingdom, Phylum, Class, Order, Family, Genus, Species. The mnemonic, “King Philip Came...
The liver and skeletal muscles have a high storage of:
The liver and skeletal muscles have a high storage of:A . glycogenB . glucagonC . ketone bodiesD . ammoniaView AnswerAnswer: A Explanation: The liver and skeletal muscles are two of the major glycogen storage sites. The liver contains a high amount in order to regulate blood sugar levels. The skeletal...
What results in extra or fewer chromosomes in a cell?
What results in extra or fewer chromosomes in a cell?A . nondisjunctionB . double replicationC . double cytokinesisD . epistasisView AnswerAnswer: A Explanation: Nondisjunction is when chromosomes do NOT separate during anaphase. Consequently, the resulting cells display an unequal sharing of chromosomes, with some cells having too many, and others...
Which of the following processes is an example of positive feedback?
Which of the following processes is an example of positive feedback?A . High blood glucose levels stimulate insulin release, which makes muscle and liver cells take in glucoseB . Low blood oxygen levels stimulate erythropoietin production which increases red blood cell production by bone marrowC . High CO2 blood levels...
Which of the following does NOT happen during inflammation?
Which of the following does NOT happen during inflammation?A . release of histamineB . an increase of local temperatureC . migration of leukocytesD . constriction of blood vesselsView AnswerAnswer: D Explanation: Inflammation causes dilation, not constriction of blood vessels. This dilation of blood vessels is designed to increase permeability across...
The structures composed solely of diploid cells:
The structures composed solely of diploid cells: A . 1, 2, and 3B . 3, 4, and 5C . 1, 4, and 5D . 2, 3, and 4E . 1, 2, and 4View AnswerAnswer: B Explanation: In flowering plants, the anthers house the male gametophytes (which produce sperm) and the...
