NAME______________________________________________DATE: February 24, 2004
SECTION 1 - MULTIPLE CHOICE (1 mark each)
1.
Which developmental sequence is correct?
(A)
(B)
(C)
(D)
cleavage, blastula, gastrula, and zygote
gastrula, zygote, blastula, and cleavage
zygote, cleavage, blastula, and gastrula
zygote, cleavage, gastrula, and blastula
2.
How do spermatogenesis and oogenesis differ?
(A)
Oogenesis begins at the onset of sexual maturity.
(B)
Oogenesis produces four haploid cells, whereas spermatogenesis produces
only one functional spermatozoa.
(C)
Oogenesis produces one functional gamete, whereas spermatogenesis
produces four functional spermatogenesis.
(D)
Spermatogenesis begins before birth.
3.
What is the function of the structure labeled W?
(A)
(B)
(C)
(D)
exchange nutrients and wastes
form blood cells
produce amniotic fluid
produce food for the fetus
W
X
4.
What would happen if a woman in the later stages of pregnancy
were given a combination of estrogen and oxytocin?
(A) Contractions of uterine muscles would begin.
(B) Hormones would be secreted from the placenta.
(C)
Menstruation would begin.
(D)
Ovulation would occur.
5.
In which organ are sperm cells stored?
(A)
epididymis
(B)
prostate
(C)
seminal vesicles
(D)
urethra
6.
The reduction of which hormones causes menstruation?
(A)
estrogen and progesterone
(B)
follicle stimulating hormone (FSH) and estrogen
(C)
luteinizing hormone (LH) and estrogen
(D)
luteinizing hormone (LH) and progesterone
7.
Which is the correct sequence for the passage of the sperm from the time it is ejaculated
into the female until it fertilizes the egg?
(A)
(B)
(C)
(D)
vagina  cervix  oviduct  uterus
vagina  cervix  uterus  oviduct
vagina  oviduct  cervix  uterus
vagina  oviduct  uterus  cervix
8.
What causes the shedding of the uterine lining in the human menstrual cycle?
(A)
Implantation and pregnancy are successful.
(B)
Progesterone levels decrease.
(C)
Progesterone levels remain high.
(D)
The corpus luteum is maintained.
9.
According to the hormone levels indicated in the graph below, at what time should this
woman release her egg?
(A)
day 0 to 10
(B)
day 10 to 14
(C)
day 14 to 20
(D)
day 20 to 28
10.
What structure secretes an alkaline fluid to neutralize the female reproductive tract?
(A)
epididymis
(B)
Cowper’s gland
(C)
seminal vesicles
(D)
Sertoli cells
11.
Cytokinesis is the division of the cell's
(A)
wall
(B)
chromosomes
(C)
centrioles
(D)
cytoplasm
12.
During interphase, the hereditary material DNA
(A)
exists in threads called chromatin.
(B)
exists as rod-like chromosomes.
(C)
exists as histones.
(D)
does not exist in any form.
13.
Normal mitotic cell division results in each daughter cell's having
(A)
half the number of chromosomes as the parent cell.
(B)
the same number and kinds of chromosomes as the parent cell.
(C)
the same number but different kinds of chromosomes as the parent cell.
(D)
twice the number of chromosomes as the parent cell.
14.
During which phase of meiosis does synapsis occur?
(A)
anaphase I
(B)
metaphase I
(C)
prophase I
(D)
telophase I
15.
How many chromosomes will be in the body cell of an organism if there are 20
chromosomes in the organism's egg?
(A)
10
(B)
20
(C)
40
(D)
80
16.
In an organism, the chromosome number is exactly the same in
(A)
a somatic cell and zygote.
(B)
the zygote and sperm.
(C)
a somatic cell and egg.
(D)
the sperm and somatic cell.
17.
Homologous chromosomes
(A)
are the sex chromosomes.
(B)
are found in diploid cells.
(C)
number 46 pairs in humans.
(D)
are different in size and shape.
18.
Crossing-over is the exchange of segments between
(A)
chromatids.
(B)
sperm.
(C)
cell nuclei.
(D)
somatic cells.
21.
What organ is targeted by the hormone Oxytocin?
(A)
ovaries
(B)
kidney
(C)
adrenal cortex
(D)
liver
22.
What is the main advantage for the hypothalamus being in direct contact with the
pituitary gland?
(A)
to release inhibiting hormone
(B)
very small amounts of hormone are needed
(C)
the pituitary is the master gland
(D)
the hypothalamus is buried deep in the brain
23.
Which hormone promotes growth by controlling protein, carbohydrate, and lipid
metabolism.
(A)
Prolactine
(B)
Adrenocoricotropin
(C)
Antidiuretic hormone
(D)
Somatotropin
24.
An excess of the hormone Somatotropin will cause?
(A)
hypothyroidism
(B)
giantism
(C)
dwarfism
(D)
Grave's disease
25.
When living is the Arctic the days of summer have 24 hours of daylight. Which
endocrine gland will be affected?
(A)
parathyroid
(B)
pineal
(C)
pancreas
(D)
adrenal
26.
During a severe allergic reaction many individuals must be given an Epi-Pen® to avoid
death.
What is the main result of this injection?
(A)
it slows down the heart
(B)
it lowers the blood pressure
(C)
it stimulates the digestive tract
(D)
it supresses the muscles
27.
Which of the following is an endocrine gland?
(A)
sweat gland
(B)
tear gland
(C)
mammary gland
(D)
salivary gland
28.
In males where is testosterone produced?
(A)
testes only
(B)
testes and adrenal gland
(C)
testes and hypothalamus
(D)
nowhere, it is a female hormone
29.
What is an auto immune disorder?
(A)
an excess of thyroxine causing hyperthyroidism
(B)
an deficiency of thyroxine causing myxedema
(C)
the body attacks its own cells
(D)
insufficient HGH causing dwarfism
30.
Banting and Best were awarded the Nobel prize in medicine for what discovery?
(A)
insulin
(B)
orthopedic surgery
(C)
diabetes
(D)
glucose
31.
Which neurotransmitter is removed from the synapse by the enzyme cholinesterase?
(A)
seratonin
(B)
dopamine
(C)
acetylcholine
(D)
GABA
32.
What is the sequence of the reflex arc?
(A)
effector, motor neuron, sensory neuron, receptor
(B)
motor neuron, effector, receptor, sensory neuron
(C)
receptor, sensory neuron, motor neuron, effector
(D)
sensory neuron, receptor, effector, motor neuron
33.
Which sequence of events describes the transmission of a nerve impulse
(A)
depolarization of the cell membrane, sodium ions enter cell, repolarization of cell membrane, pota
(B)
potassium ions leave the cell, depolarization of the cell membrane, sodium ions
(C)
repolarization of cell membrane, potassium ions leave the cell, depolarization of
the cell membrane, sodium ions enter cell.
(D)
sodium ions enter cell, depolarization of the cell membrane, potassium ions leave
the cell, repolarization of cell membrane.
34.
Which part of the nervous system is responsible for the skeletal muscle movement in
(A)
parasympathetic
(B)
somatic
(C)
autonomic
(D)
central
35.
Why would cholinesterase inhibitors be given to individuals experiencing personality
changes such as memory loss and aggression?
(A)
They simulate acetylcholine levels
(B)
They suppress acetylcholine levels
(C)
They stimulate serotonin levels
(D)
They suppress serotonin levels
36.
Which of the following brain structures links the endocrine and nervous systems
together?
(A)
medulla oblongata
(B)
thalamus
(C)
hypothalamus
(D)
cerebrum
37.
Which of the following is a fatal autosomal dominant disorder?
(A)
viral meningitis
(B)
Huntington's disease
(C)
Parkinson's disease
(D)
Multiple Sclerosis
38.
What vision disorder is a result of an abnormally shaped cornea?
(A)
glacoma
(B)
myopia
(C)
hyperopia
(D)
astigmatism
39.
What part of the eye is important for focussing light?
(A)
lens
(B)
cornea
(C)
retina
(D)
fovea
40.
What is the main function of the vestible and semicircular canals?
(A)
air pressure
(B)
balance
(C)
fluid pressure
(D)
transmission of sound waves to the brain
SECTION 2
REPRODUCTION
1.
Describe the role of follicle stimulating hormone, leutinizing hormone, estrogen, and
progesterone in controlling the human female menstrual cycle.(8 marks)
2.
Select one of the following (A) or (B) (8 marks)
(A)
Trace the entire pathway that a human sperm must travel in order to fertilize an
egg. Outline all the obstacles that both the sperm and egg must overcome in order
for fertilization to occur.
ENDOCRINE
3.
Describe the pituitary gland and its role as the master gland. (8 marks)
4.
Select one of the following (A) or (B) (8 marks)
(A)
Explain two reasons for opposing prescribing Thyroxine to a normal individual
who is over weight and has a low basal metabolic rate.
(B)
Explain what would occur if parathyroid hormone was administered to a person
suffering from osteoporosis.
NERVOUS
5.
Describe how depolarization will be affected if the sodium potassium pump did not
function along an axon. (4 marks)
6.
Select one of the following (A) or (B) (8 marks)
(A)
Describe how light enters the eye and is transmitted to the brain.
(B)
Describe how sound enters the ear and is transmitted to the brain.
7.
Explain at least one reason for supporting OR one reason for opposing stem cell
research. (6 marks)
8.
Explain at least one reason for supporting OR one reason for opposing the legalization
of drugs such as marijuana.