BIO 100 FINAL EXAM PRACTICE
QUESTIONS AND COMPLETE SOLUTIONS
◉ One of mom's chromosome 7's has a nonfunctional CTFR allele
(cf−) next to a functional allele of another gene (A+). Her other
homologue has a functional allele of the CTFR (CF+) gene next to a
nonfunctional allele of the other gene (a−). Dad has functional
alleles of both genes on both homologues (CF+, A+). A child of
theirs has a maternal homologue that is CF+, A+; and a paternal
homologue that is also CF+, A+. The best explanation for this is
_____.
Answer: recombination in mom
◉ If two genes are located next to one another on the same
chromosome, can you use the Punnett square to assess
inheritance of the two genes?
Answer: no
◉ If the first child of two parents with polydactyly does not
exhibit this trait, what is the probability that their next child will
have polydactyly?
Answer: 75 percent
◉ The term that is used to describe when two alleles are different
from each other is _____.
Answer: heterozygous
,◉ Dimples are a dominant inherited trait. If both parents are
nondimpled, what are the chances that their first child will be
born with dimples?
Answer: 0 percent
◉ Your skin is a major part of the _____ system.
Answer: integumentary
◉ Vasoconstriction involves constriction of _____.
Answer: blood vessels
◉ Which of these houses the body's thermostat?
Answer: the hypothalamus
◉ The digestive system helps absorb nutrients into the
bloodstream. Because it interacts with the bloodstream, with
what system does the digestive system cooperate?
Answer: circulatory
◉ A researcher is dissecting a bat carcass and comes across a
deposit of brown fat. Which statement is true regarding this fat?
Answer: This fat would be involved in nonshivering
thermogenesis
, ◉ Which of these is an example of homeostasis?
Answer: maintaining a relatively constant blood sugar level after
meals and between meals
◉ The heart is a(n) _____ found in the circulatory _____.
Answer: organ, organ system
◉ Heat conservation by the body can actually lead to frostbite
because _____.
Answer: vasoconstriction reduces blood flow to the extremities
and lets them cool down too much
◉ How can a brain injury cause someone to be perpetually cold?
Answer: If the hypothalamus is damaged, it can't properly sense
and respond to changes in temperature
◉ Someone who has a liver transplant after liver cancer is having
a(n) _____ transplant.
Answer: organ
◉ A person has fasting blood glucose levels that are abnormally
low. What hormone might help him or her maintain normal blood
sugar levels between meals?
Answer: glucagon
QUESTIONS AND COMPLETE SOLUTIONS
◉ One of mom's chromosome 7's has a nonfunctional CTFR allele
(cf−) next to a functional allele of another gene (A+). Her other
homologue has a functional allele of the CTFR (CF+) gene next to a
nonfunctional allele of the other gene (a−). Dad has functional
alleles of both genes on both homologues (CF+, A+). A child of
theirs has a maternal homologue that is CF+, A+; and a paternal
homologue that is also CF+, A+. The best explanation for this is
_____.
Answer: recombination in mom
◉ If two genes are located next to one another on the same
chromosome, can you use the Punnett square to assess
inheritance of the two genes?
Answer: no
◉ If the first child of two parents with polydactyly does not
exhibit this trait, what is the probability that their next child will
have polydactyly?
Answer: 75 percent
◉ The term that is used to describe when two alleles are different
from each other is _____.
Answer: heterozygous
,◉ Dimples are a dominant inherited trait. If both parents are
nondimpled, what are the chances that their first child will be
born with dimples?
Answer: 0 percent
◉ Your skin is a major part of the _____ system.
Answer: integumentary
◉ Vasoconstriction involves constriction of _____.
Answer: blood vessels
◉ Which of these houses the body's thermostat?
Answer: the hypothalamus
◉ The digestive system helps absorb nutrients into the
bloodstream. Because it interacts with the bloodstream, with
what system does the digestive system cooperate?
Answer: circulatory
◉ A researcher is dissecting a bat carcass and comes across a
deposit of brown fat. Which statement is true regarding this fat?
Answer: This fat would be involved in nonshivering
thermogenesis
, ◉ Which of these is an example of homeostasis?
Answer: maintaining a relatively constant blood sugar level after
meals and between meals
◉ The heart is a(n) _____ found in the circulatory _____.
Answer: organ, organ system
◉ Heat conservation by the body can actually lead to frostbite
because _____.
Answer: vasoconstriction reduces blood flow to the extremities
and lets them cool down too much
◉ How can a brain injury cause someone to be perpetually cold?
Answer: If the hypothalamus is damaged, it can't properly sense
and respond to changes in temperature
◉ Someone who has a liver transplant after liver cancer is having
a(n) _____ transplant.
Answer: organ
◉ A person has fasting blood glucose levels that are abnormally
low. What hormone might help him or her maintain normal blood
sugar levels between meals?
Answer: glucagon
