Cystic fibrosis is a genetic disorder in homozygous recessives that causes death during the teenage years
If 9 in 10,000 newborn babies have the disease, what are the expected frequencies of the dominant (A1 ) and recessive (A2 ) alleles according to the Hardy-Weinberg model? A) f(A1 ) = 0.9997, f(A2 ) = 0.0003
B) f(A1 ) = 0.9800, f(A2 ) = 0.0200
C) f(A1 ) = 0.9700, f(A2 ) = 0.0300
D) f(A1 ) = 0.9604, f(A2 ) = 0.0392
C
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Many metabolic pathways are ultimately concerned with ATP; either with the generation of ATP, or with the requirement of ATP for that pathway to function. Why is ATP so important to metabolism?
A. Hydrolysis of ATP is used to drive exergonic reactions B. Hydrolysis of the bond between adenine and ribose in ATP is commonly used to release energy that can be used to drive other cellular reactions C. The phosphate groups of ATP are held together by unstable bonds that can be broken to release energy D. ATP is a protein that serves as the energy currency of cells
Bilateral symmetry is characteristic of a(n)
a. cnidarian b. roundworm c. echinoderm d. corals e. flatworm
_____ is known as a cardiac pacemaker
a. Diastole b. Systole c. Cardiac muscle d. SA node e. AV node
Acrosomes contain nutrients for the developing sperm cells, and they also secrete hormones and other
signaling molecules. ____________________ Indicate whether the statement is true or false.