Biology High Yield

Question 1

Lactase

Answer 1

brush-border enzyme that starts in oral cavity

Question 2

Bile created by… and stored in…

Answer 2

created by the liver and stored in the gallbladder

Question 3

pepsin is in the …

Answer 3

stomach

Question 4

trypsin is in the …

Answer 4

pancreas

Question 5

Causes a right shift in the oxyhemoglobin curve (5)

Answer 5

exercise increased PaCO2, H+, temperature Decreased pH

Question 6

Hardy Weinberg equilibrium

Answer 6

relative frequency of dominant allele + relative frequency of recessive allele = 1

Question 7

Aldosterone (4)

Answer 7

increase sodium reabsorption increase potassium excretion increase blood pressure decrease water excretion

Question 8

more than one dominant allele exists for a given gene

Answer 8

Codominance

Question 9

occurs when a heterozygote expresses a phenotype the tis intermediate b/t the two homozygous genotypes

Answer 9

Incomplete dominance

Question 10

a population measure of the proportion of individuals int eh population carrying the allele who actually express the phenotype (the probability that, given a particular genotype) a person will express the phenotype

Answer 10

penetrance

Question 11

explains the variability in phenotype for one genotype

Answer 11

expressivity

Question 12

seminiferous tubules

Answer 12

sperm production

Question 13

cells of leydig

Answer 13

testosterone production

Question 14

sperm holding tank

Answer 14

epididymis

Question 15

these nourish sperm

Answer 15

Sertoli cells