Which animals are ectothermic?

A) frogs and mammals
B) lizards and birds
C) turtles and lizards
D) birds and mammals


Answer: C

Biology & Microbiology

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Functionally speaking, a nerve impulse is

a. a flow of electrons along the outside of the plasma membrane of a neuron. b. the movement of cytoplasmic elements through the core of the neuron. c. a series of changes in membrane potential. d. a lengthening and shortening of the membrane extensions of a neuron. e. a turning on and off of the sodium-potassium pumps of a neuron.

Biology & Microbiology

If a(n) intron containing a human gene sequence is inserted into a prokaryote cell, that molecule will

produce a functional protein product. __________________ Indicate whether the statement is true or false.

Biology & Microbiology

"At one time there was a shallow pond in this area. Now it has all filled in and is a field." This statement would best describe 

A. climax community. B. primary succession. C. secondary succession. D. pioneer community.

Biology & Microbiology

In which eukaryotic organelle are various macromolecules broken down and destroyed?

A) the Golgi apparatus B) endoplasmic reticulum C) mitochondria D) lysosome

Biology & Microbiology