Which scientist proposed the idea that because giraffes stretched their necks to reach for higher leaves, a longer neck would be passed to their offspring?

A. Darwin
B. Lamarck
C. Lyell
D. Wallace


Answer: B. Lamarck

Biology & Microbiology

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A protein that regulates transcription by binding to the operator is known as the  

A.  operon. B.  repressor. C.  promoter. D.  operator. E.  CAP.

Biology & Microbiology

Skeletal muscle attaches to ________, which connect the muscle to bone

Fill in the blank(s) with correct word

Biology & Microbiology

Which would be a fact supporting the hypothesis that echinoderms such as sea stars evolved into radial symmetry from bilateral symmetry?

A) They swim like animals with bilateral symmetry. B) They use their appendages in a bilateral manner. C) Their larvae have bilateral symmetry. D) Their brains show the mirror image development of bilateral symmetry.

Biology & Microbiology

The ____ hypothesis states that the energy released during the movement of electrons through the electron transport chain is used to generate a proton gradient (proton motive force or PMF) across the membrane, which can then be used to generate ATP through oxidative phosphorylation.

a) chemiosmotic b) osmolytic c) chemical d) chemotrophic e) chemolytic

Biology & Microbiology