A type of transport of a solute across a membrane, up its concentration gradient, using protein carriers driven by the expenditure of chemical energy is known as

A. osmosis.
B. diffusion.
C. facilitated transport.
D. active transport.
E. exocytosis.


D

Biology & Microbiology

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Diversification of mammals after the extinction of the dinosaurs is considered an adaptive radiation because a few mammal species rapidly evolved into most of the current mammalian lineages in a relatively short amount of time. This diversification was partially driven by the evolution of endothermic homeostasis in mammals, which is an example of  

A.  allopatric speciation. B.  reproductive isolation. C.  a key innovation. D.  hybridization. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required?   Gather Content   · What do you already know about adaptive radiation?   Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?   Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Which component of a nerve cell provides electrical insulation for signals that are travelling along the axon?

a. astrocytes b. dendrites c. oligodendrocyte d. soma

Biology & Microbiology

Which of the following types of interactions is advantageous for one species, but has a negative effect

on the other?

a. predation b. herbivory c. mutualism d. parasitism e. predation, herbivory and parasitism

Biology & Microbiology

Decomposers

What will be an ideal response?

Biology & Microbiology