The implanted blastula prevents ________ by secreting the hormone ________

a. menstruation, HCG
b. gastrulation, HCG
c. cleavage, progesterone
d. menstruation, progesterone
e. menstruation, estrogen


a

Biology & Microbiology

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What is the p value from this test? (Pick the most accurate choice.)

In Drosophila, singed bristles (sn) and carnation eyes (car) are both caused by recessive X-linked alleles. The wild-type alleles (sn+ and car+) are responsible for straight bristles and red eyes, respectively. A sn car female is mated to a sn+car+ male and the F1 progeny are interbred. The F2 are distributed as follows:





A) p> 0.5
B) 0.1 C) p< 0.1
D) p< 0.05
E) p< 0.01

Biology & Microbiology

The neurotransmitter, __________, is used by motor neurons to communicate with muscle cells.

A. acetylcholine B. GABA C. glutamine D. fatty acids E. serotonin

Biology & Microbiology

Which of the following statements is incorrect?

A) Enzymes raise the activation energy of a reaction. B) Enzymes speed up the rate of a reaction. C) Substrates bind to an enzyme's active site. D) Enzymes change shape when they bind to a substrate.

Biology & Microbiology

Cuticle (and/or cork) is found on the surfaces of all of the following except:

A. Leaves B. Green stems C. Woody roots D. Root hairs E. Woody stems

Biology & Microbiology