1) the allele for cleft chin (c) is dominant to the allele for uncleft chin (c). a male and
female who are both heterozygous for cleft chin have a child. what is the chance that
this child will have an uncleft chin?
a. 0%
b. 25%
c. 50%
d. 75%
e. 100%
2) _______________ approaches understanding of the human body by studying the
interactions of its parts.
a. naturalism
b. reductionism
c. vitalism
d. holism
e. rationalism
3) when the voltage of a plasma membrane shifts from +35mv towards 0 mv, the cell is
__________.
a. depolarizing
b. repolarizing
c. hyperpolarizing
d. reaching the threshold
e. exiting the threshold
4) the heart is in the __________ cavity and is covered by the __________.
a. thoracic; pleura
b. thoracic; pericardium
c. pericardial; pleura
d. pericardial; peritoneum
e. cranial; meninges
5) out of the 300 million ejaculated sperm, only about __________ reach the vicinity of
the egg.
a. 20 to 30
b. 200 to 300
c. 2000 to 3000
d. 20,000 to 30,000
e. half
6) helper t (th) cells do not __________.
a. secrete cytokines that stimulate clonal selection of b cells
b. secrete cytokines that stimulate clonal selection of cytotoxic t cells
c. secrete cytokines that stimulate macrophage activity
d. secrete inflammatory chemicals
e. secrete fever-producing chemicals
7) the structural framework of a blood clot is formed by __________.
a. soluble fibrinogen
b. soluble fibrin
c. a fibrin polymer
d. a fibrinogen polymer
e. a thrombin polymer
8) down syndrome (trisomy-21) results from _________.
a. a mutagen
b. nondisjunction
c. a teratogen
d. a sex-linked mutation
e. an autosomal recessive allele
9) in a taste bud, which cell produces a receptor potential?
a. taste hairs
b. sensory nerve fibers
c. supporting cells
d. basal cells
e. gustatory cells
10) to meet the definition of polyuria, the minimum daily output of urine is__________.
a. 0.5 l
b. 1.0 l
c. 1.5 l
d. 2.0 l
e. 3.0 l
11) the __________ is not found in the elbow.
a. humeroulnar joint
b. humeroradial joint
c. proximal radioulnar joint
d. distal radioulnar joint
e. anular ligament
12) the haploid result of meiosis i is called a __________.
a. spermatogonium
b. secondary spermatocyte
c. primary spermatocyte
d. spermatid
e. sperm
13) the joint between the diaphyses of theradius and ulna is a __________.
a. suture
b. gomphosis
c. syndesmosis
d. synchondrosis
e. symphysis
14) which of the following would contain the greatest amount of information that
scientists consider to be true to the best of their knowledge?
a. a fact
b. a law of nature
c. a hypothesis
d. an equation
e. a theory
15) skin covering the __________ has sweat glands but no hair follicles or sebaceous
glands.
a. forearm
b. buttocks
c. abdomen
d. fingertips
e. back
16) __________________ tissues respond quickly to outside stimuli by means of
changes in membrane potential.
a. excitable
b. responsive
c. adipose
d. epithelial
e. connective
17) a young girl falls off her bike and lands on her hand, breaking the medial bone of
her antebrachium. which bone did she break?
a. her carpal
b. her metacarpal
c. her humerus
d. her radius
e. her ulna
18) negative feedback inhibition occurs when __________.
a. thyrotropin-releasing hormone (trh) targets the anterior pituitary
b. thyrotropin-releasing hormone (trh) causes the anterior pituitary to release
thyroid-stimulating hormone (tsh)
c. thyrotropin-releasing hormone (trh) targets the thyroid gland
d. thyroid-stimulating hormone (tsh) targets the thyroid gland
e. thyroid hormone (th) targets the anterior pituitary