What part of the ATP synthase is responsible for catalyzing ATP formation?
a. the basal unit
b. the headpiece
c. the stalk
d. the lollipop
e. the electrons
B
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A hypothetical family of proteins consists of six similar but different proteins. Each of the six proteins can form transcription factors by forming homo- or heterodimers in combinatorial mixtures, each binding to different regulatory sites
Calculate the number of different dimeric structures that can be formed from the six proteins (and, thus, potential number of different regulatory sites that can be bound).
Morphology refers to the ____ of an organism
a. reproductive ability b. appearance c. habitat d. lifespan e. movement
Bone is composed only of nonliving material
Indicate whether the statement is true or false
An ectopic pregnancy occurs when a fertilized egg implants somewhere other than in the lining of the uterus. Usually it implants in the oviduct. Which of the following would be the most likely explanation for such a pregnancy being unsuccessful?
A) The orientation of the baby would be sideways. B) Human chorionic gonadotropin (hCG) cannot be produced in the oviduct. C) The lining of the oviduct is unable to support the developing fetus. D) The necessary hormones cannot reach the developing fetus in the oviduct.