1) according to the bohr effect, a low level of oxyhemoglobin enables the blood to
transport more co2.
2) a dark band formed by parallel thick filaments that partly overlap the thin filaments
is known as an h band.
3) sensory receptors sense only stimuli external to the body, such as light, sound waves,
smell, and touch.
4) a dipeptide is a molecule with two peptide bonds.
5) acetylcholine triggers the synthesis of the second messenger camp only in neurons of
the pns.
6) in most cells, the nucleus is the largest organelle.
7) sperm travels to the ampulla of the ductus deferens before reaching the spermatic
cord.
8) both pancreatic juice and bile are secreted into the duodenum.
9) all of the body’s nonreproductive cells, called __________, usually have 23 pairs of
chromosomesand are thus called __________ cells.
a. germ cells; haploid
b. germ cells; diploid
c. somatic cells; haploid
d. somatic cells; diploid
10) after a stroke, a patient complains about lack of sensitivity in her right hand. the
stroke most likely affected which part of the brain?
a. precentral gyrus in the right frontal lobe
b. postcentral gyrus in the left parietal lobe
c. precentral gyrus in the left frontal lobe
d. postcentral gyrus in the right temporal lobe
e. postcentral gyrus in the left frontal lobe
11) which of the following is an accurate comparison of skeletal muscle tosmooth
muscle?
a. smooth muscle contracts more slowly but relaxes more rapidly.
b. smooth muscle contracts more rapidly but relaxes more slowly.
c. smooth muscle contracts and relaxes more slowly.
d. smooth muscle consumes more atp to maintain a given level of muscle tension.
e. smooth muscle depends on a nerve fiber to supply the calcium needed for
contraction.
12) where are most carbohydrates in the body found?
a. adipose tissue
b. muscle glycogen
c. blood glucose
d. liver glycogen
e. pancreas glucose
13) dna is a polymer of __________, which consist of a sugar, a phosphate group, and a
__________.
a. amino acids; nucleotide
b. nucleic acids; nucleotide
c. nucleotides; nitrogenous base
d. nucleotides; nucleic acid
e. proteins; nucleotide
14) triglycerides consist of a 3-carbon compound called __________ bound to three
__________.
a.pyruvate; fatty acids
b.lactic acid; glycerols
c.eicosanoid; steroids
d.glycerol; fatty acids
e.sterol; fatty acids
15) preganglionic fibers run from the _________ to the __________.
a. posterior root ganglia; gray matter
b. posterior root ganglia; autonomic ganglia
c. gray matter; posterior root ganglia
d. gray matter; autonomic ganglia
e. autonomic ganglia; visceral effectors
16) addison disease is a consequence of a tumor of the adrenal medulla.
17) carbohydrate digestion begins in the __________, whereas protein digestion begins
in the __________.
a. liver; small intestine
b. small intestine; stomach
c. mouth; stomach
d. mouth; small intestine
e. stomach; small intestine
18) which of the following does not raise the total metabolic rate?
a. starvation
b. anxiety
c. fever
d. eating a big meal
e. pregnancy
19) which vessel supplies 80% of the cerebrum?
a. superficial temporal artery
b. occipital artery
c. internal carotid artery
d. anterior cerebral artery
e. middle cerebral artery
20) which of the following constitutes the so-called “bad cholesterol?”
a. triglycerides
b. chylomicrons
c. low-density lipoproteins
d. high-density lipoproteins
e. very-low-density lipoproteins
21) short-term memory is associated with the __________, whereas long-term memory
is associated with the __________.
a. cerebral cortex; hippocampus
b. hippocampus; cerebral cortex
c. cerebral cortex; amygdala
d. amygdala; hippocampus
e. hippocampus; midbrain
22) regarding fertilization, which of the following events happens first?
a. formation of a fertilization membrane
b. the fast block to polyspermy
c. the slow block to polyspermy
d. the cortical reaction
e. the acrosomal reaction
23) the __________ is the pacemaker that initiates each heart beat.
a. sympathetic division of the nervous system
b. autonomic nervous system
c. sinoatrial (sa) node
d. atrioventricular (av) node
e. cardiac conduction system
24) the first body cavity is called the __________.
a. coelom
b. amniotic cavity
c. yolk sac
d. somite
e. chorion
25) __________ epithelium is the most widespread epithelium in the body, whereas
__________ epithelium is rare.
a. simple columnar; stratified columnar
b. stratified squamous; stratified columnar
c. pseudostratified; stratified squamous
d. simple cuboidal; stratified squamous
e. stratified squamous; simple squamous
26) a volleyball player depends on the gastrocnemius muscles for plantar flexion,
whereas a marathon runner depends more on the soleus muscles for the same action.
what characteristic of the soleus muscles makes this so?
a. they havesmaller mitochondria.
b. they have more glycogen in them.
c. they don’t have as many blood capillaries per gram of tissue.
d. they make more use of aerobic respiration.
e. they break atp down to adp and pi faster.