Dogs use panting to dissipate excess heat. What part of their brain detects the need for this response and sends the signal to pant?

A. hippocampus
B. amygdala
C. prefrontal cortex
D. hypothalamus


Answer: D

Biology & Microbiology

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Which term describes chromosomes whose centromeres are located closer to one end of the chromosome?

A) metacentric B) acrocentric C) holocentric D) anacentric

Biology & Microbiology

Interferons beta and alpha are released from ________ and act to inhibit viral replication by ________.

A) phagocytotic cells : degrading RNA B) infected cells : degrading RNA C) T lymphocytes : degrading RNA D) neutrophils : digesting the virus E) phagocytotic cells : digesting the virus

Biology & Microbiology

What happens to nutrient macromolecules in an animal's digestive tract?

A) They are absorbed whole and are then broken down into monomers within cells that ultimately use them. B) Proteins and nucleic acids are digested into monomers before absorption; energy-storage macromolecules (starch and fat) are absorbed whole. C) The digestive breakdown of macromolecules determines the monomers that are immediately needed and therefore produced. D) Nutrient macromolecules are digested into monomers before absorption.

Biology & Microbiology

You breed a black, long-haired rabbit with a white, short-haired rabbit. All of the offspring have long, black hair. If the genes for hair color and length are closely linked on the same chromosome, what would you expect to see in the F2 generation?

A. 3 black, long-haired: 9 black, short-haired: 9 white, long-haired: 1 white, short-haired B. 9 black, long-haired: 3 black, short-haired: 3 white, long-haired: 1 white, short-haired C. 3 black, long-haired: 1 white, short-haired D. 15 black, long-haired: 1 black, short-haired: 1 white, long-haired: 5 white, short-haired E. all long-haired black

Biology & Microbiology