11 Jun The innermost lining of the gastrointestinal tract
Question
1. The innermost lining of the gastrointestinal tract is the ______.
A. serosa B. mucosa C. submucosa D.muscularis 2. This digestive organ absorbs water from indigestible food reduce ,stores feces, and
eliminates feces from the body.
A. small intestine B. large intestine C. rectum D. stomach
3. .The structure that is shared between the male reproductive and urinary systems is the
____?
A. prostate gland B. urethra C seminal vesicles D. seminiferous tubules
4. Which of following test is not used to detect prostate cancer?
A. a rectal exam B.PAP test C.PSA blood test D.all of these are used to detect prostate cancer
5. Labor is directly triggered by the hormone ______whcih also triggers ______after birth.
A.oxytocin;milk production B.estrogen;milk production C.oxytocin;milk ejection
D.estrogen;milk ejection
6. When your mother is mad at you she likes to remind you that she spent 48 hours in
painful labour to bring you into the world?Specifically,she means that she spent a long
time in the ______stage of labour.
A.third trimester B.dilation C.placental D.expulsion 7. Developmental problems present at birth are known as_______
A.teratogenic B.gastrulation C.type 2 diabetes D. birth defects 8. Which of the following maintains the corpus luteum and stimulates it to continue to
produce the hormone.
A.estrogen B.testosterone C.vectors D.cytokinins
9. Environmental agents that disrupt development of the embryo or fetus are called____
A.aldosterone B.teratogens C.vectors D.cytokinins 10. The semen from a male who has had a vasectomy would include each of the following
except_______.
A.secretions from the bulbourethral glands B.sperm C.secretions from the prostate gland D.secretions from the seminal vesicles.
11. In which stage of mitosis does exchange of genetic material between chromosomes
(crossing-over) occur?
A.prophase I B.prophase II C. anaphase I D.none of the above
12. If a cell begins mitosis with 36 chromosomes,there will be ______chromosomes in each
cell after mitosis and daughter cell will be ______genetically.
A.18;identical B.36;different C.36;identical D. 18;different
13. A process in which a sister chromatid inherited from the mother and a sister chromatid
inherited from the father pair up and from tetrads and exchange DNA to from
genetically diverse gametes is calld________.
A.prophase B.crossing over C. cytokinesis D.cell cycle
14. In this heredity pattern,both alleles appear in the phenotype of the heterozygote.
A.codominance B.multiple alleles C.pleiotropy D.complete dominance
15. Agene on the Y chromosome causes a disease.A woman married to a man with the
disease has three children.The first two are daughters without the disease.The third is a
son.What is the probability that he will have the gene?
A.75% B.100% C.25% D 0% E.50%
16. If two chromosomes have the same genes, they are said to be _____.
A.autosomal B.traits C.homologues D.polypeptides
17. Adel has freckles,autosomal dominant, so please provide her genotype.
A.Ff B.ff C.FF D.can not say for certain it could be FF or Ff
18. If someone were heterozygous for a recessive genetic illness, then they are_________.
A.epistatic B.pleiotropic C.allelic D. a carrier 19. If Hani has type A blood and his mother has type B blood,which of the following is the most
likely genotype of Hani’s father?
A.OO B.BO C.AA D.BB .Point mutations can occur in any given cell type,but they mostly only affect that one cell and
cells produced by it.What cell type,if mutated,would allow the mutation to be passed on to
family members for generations?
A.white blood cells B.skin cells C.gametes such as an egg or sperm D.glial cells like those that
produce a myelin sheath
37.Why are the complementary base pairing rules so important when a cell needs to copy its
DNA?
A.As long as there is one stand,a copy an be made by following the pairing rules.
B.The cells need both strand to be accurate because eac stand code for one half of the gene.
C.Transcription can not proceed unless the pairs are in the proper sequence.
D.Unless the bases pair up correctly, the DNA strand can break apart.
39.Which of the following is a process in translation in which tRNA molecules deliver amino
acids in the correct causing peptide bonds to form and increasing the length of the polypeptide
chain?
A.termination B.initiation C.transcription D.elongation
40.Which part of the tRNA molecule pairs with mRNA?
A.gene B.anticodon C.duplex D.rRNA
55. this digestive organ absorbs water from indigestible food residue, stores feces, and
eliminated feces from the body.
A.
B.
C.
D. small intestine
large intestine
rectum
stomach
57. A pregnant woman( first trimester) is concerned that she has been exposed to a chemical
that blocks estrogen and progesterone receptors so that the body does not recognize these
hormones. this most important reason she should be worried about this is because_ A. menstruation may occur, thus causing the embryo or early fetus to be lost
B. luteinizing hormone(LH) may cause the release of another egg
C. GnRH may be inhibited
59.when a female has low levels of estrogen and progesterone, _ ?
A. she is ovulating
B. her uterus is ready to accept an embryo C. she is menstruating
D. she is pregnant
60.During a normal female reproductive cycle, the unique hormone produced only after
ovulation is_____ made the _____
A.
B.
C.
D. gonadotropin releasing hormone (Gnrh) ; hypothalamus
follicle stimulating hormone( FSH); anterior pituitary
progesterone; corpus luteum
luteinizing hormone(LH); anterior pituitary
61.the functions of the corpus luteum are all of the following except___ A.
B.
C.
D. to secrete estrogen
to secrete progesterone
to maintain the endometrium
to secrete follicle stimulating hormone (FSH)
62. Which of the following hormones is not involved at the male reproductive system? A.
B.
C.
D. testosterone
progesterone
LH
FSH
65. why do harmful agents cause the most severe birth defects during the embryonic period? A.
B.
C.
D. the mother’s hormones are at the highest levels at this time
the embryo has not yet implanted into the uterus
this is when substances pass most easily through the placenta
this is a period of rapid differentiation when cells and tissues acquire specific functions, and
organs form
66.A male has a genetic disease coded for on his Y chromosome, which parent passed of this
trait? A.
B.
C.
D. the dad
the mom
neither parent; it is a spontaneous mutation
either the mom or dad
67.A pregnant female is a week past her due date and her doctor decides to induce labor. Her
Physician will use pitocin, which is a synthetic form of which natural hormone? A.
B.
C.
D. prolactin
progesterone
estrogen
oxytocin 68. identical twins occurs when ___?
A.
B.
C.
D. one egg is released and his fertilized by one sperm, and the fetus later splits into two.
two eggs are released and are fertilized by two different sperm
one egg is released and is fertilized by one sperm, and the pre-embryo later splits into two
two eggs are released and are fertilized by the same sperm
69.what is the term for when a baby is born bottocks first ? A.
B.
C.
D. breech birth
labor
blue baby
placental stage
70.the union of the sperm and the egg that results in a cell which 46 chromosomes is called a(n)
___. A.
B.
C.
D. embryo
trophoblast
fetus
zygote
72. DNA that has wrapped around histones and is in a condensed form following interphase is
called ____ A.
B.
C.
D. chromatin
nucleosomes
karyokinesis
chromosomes 73. in which phase does the chromatin condense into chromosomes, the nuclear membrane
disintegrates, and the centrioles migrate to the oles as spindle fibers are organized?
A.
B.
C.
D. prophase
interphase
anaphase
telophase
74. A cell with a diploid number of 24 fails to undergo cytokinesis while performing mitosis so
that the daughter cells do not form. How many chromosomes will be in the resulting cell? A.
B.
C.
D. 96
24
48
12 76.which of the following characterizes Klinefelter syndrome?
A.
B.
C.
D. XXY
three copies of chromosome 21
XO
XXX
77.Oogenesis different from spermatogenesis in ____ A.
B.
C.
D. when it is completed
size of gametes produced
number of functional gametes produced
all of the above are true
78. Children born with Down syndrome have inherited an extra chromosome so their diploid
number is 47 rather than 46 chromosomes. what is this genetic condition called ? A.
B.
C.
D. monoploidy
triploid
haploid 21
trisomy 21
79.Specific segments of DNA that are the functional units of inheritance are called ____? A.
B.
C.
D. telomeres
chromosomes
chromatids
genes
80.if your parents are heterozygous for a gene, what is the chance that you will have at least one
copy of it ? A.
B.
C.
D. 0%
25%
75%
50%
81. Thalassemia is a very serious disorder that affects hemoglobin. it is caused by an autosomal
recessive gene. if both a man and a man are carriers, then what is the chance that they will have
a child with the disease? A.
B.
C.
D. 100%
25%
75%
50% 82.the gene for Tay-Sachs disease codes for a nonfunctional form of the enzyme hexosaminidase
A ( or Hex A). It has been found that a person with only one -third the maximum amount of Hex
A can function absolutely normally. please characterize the heredity of Tay-Sachs disease.
A.
B.
C.
D. multiple allelic
recessive
dominant
codominant
84.in a family both parents have freckles and widow’s peak. Both of these traits are dominant:
F=freckles, W=window’s peak. they have a child that has not widow’s peak and no freckles.
which one is a possible dihybrid genotype of their child? A.
B.
C.
D. FFww
ffww
ffWw
FfWw
86.which of the following bring tRNA with an amino acid close enough to mRNA to permit
interaction and the assembly of amino acid to form a protein? A.
B.
C.
D. DNA polymerase
mRNA
RNA polymerase
ribosome
87.the process in which the mRNA, tRNA, and ribosomal subunits come together during
translation is called ____? A.
B.
C.
D. termination
deletion
initiation
elongation
89.which process converts the nucleotide language of mRNA into the amino acid language of a
protein? A.
B.
C.
D. transcription
DNA replication
meiosis
translation
90. A new antibiotic is developed that interferes with the way tRNA fits into bacterial ribosomes.
How would this kill them? A. the tRNA would be unable to carry out transcription
B. the bacteria would be unable to produce necessary enzyme to carry out basic metabolism
C. tRNA would not unwind the DNA to allow DNA polymerase to copy it, thus cell division stops D. Ribosomes will not be able to produce mRNA and cell function will halt.
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