Question 1. 1. Sperm cannot develop at body temperature (37 degrees Celsius). (P
ID: 48006 • Letter: Q
Question
Question 1.1. Sperm cannot develop at body temperature (37 degrees Celsius). (Points : 1.25) TRUEFALSE Question 2.2. In males, is there an organ analogous to the uterus in females? (Points : 1.25) YES
NO Question 3.3. How many chromosomes does a sperm contain? (Points : 1.25) 1
23
24
46
48 Question 4.4. If the secondary oocyte is not fertilized, it never finishes meiosis. (Points : 1.25) TRUE
FALSE Question 5.5. During which stage of the ovarian cycle will LH spike? (Points : 1.25) Ovulation
Follicular phase
Luteal phase
Secretory phase
Proliferative phase Question 6.6. Which of the following is not a function of the genitals? (Points : 1.25) produce gametes
transport gametes
protect zygote
produce FSH and LH
produce androgens/estrogens Question 7.7. At the end of the embryonic period, the embryo is about 12 inches long. (Points : 1.25) TRUE
FALSE Question 8.8. Which of the following is not associated with the egg? (Points : 1.25) corona radiata
acrosome
zona pellucida
cortical granule
fertilization membrane Question 9.9. Which of the following is not a chief effect of progesterone? (Points : 1.25) increased uterine blood flow
relaxation of smooth muscle
reduced uterine motility
reduced maternal immune response to fetus
low blood pressure Question 10.10. Which of the following is present in the fetus but not in an adult human? (Points : 1.25) ductus arteriosus
pulmonary vein
left atrium
superior vena cava
internal iliac artery Question 11.11. The blood of the mother and the fetus mix in the placenta. (Points : 1.25) TRUE
FALSE Question 12.12. Which of the following statements is related to a decrease in blood flow? (Points : 1.25) More neural cells are lost as we age.
Females undergo menopause.
Ventilation of the lungs is reduced.
The liver does not metabolize drugs as efficiently as before.
The homeostatic adjustment to heat is limited. Question 13.13. What is the term for the DNA and proteins found within the cell? (Points : 1.25) chromatin
nucleus
karyotype
centromere
chromatids
none of these Question 14.14. In a karyotype it can be seen that a homologous pair of chromosomes will contain how many chromatids? (Points : 1.25) one
two
three
four
six Question 15.15. What are the two parts of the cell cycle? (Points : 1.25) apoptosis and interphase
mitosis and cytokinesis
nucleus and cytoplasm
mitosis and meiosis
interphase and cell division Question 16.16. In meiosis there are how many divisions and how many daughter cells? (Points : 1.25) 1, 2
1, 4
2, 2
2, 4
2, 8 Question 17.17. In a karyotype, the chromosomes are arranged in order from (Points : 1.25) largest to smallest, with the sex chromosomes at the end.
smallest to largest, with the sex chromosomes at the end.
largest to smallest, including the sex chromosomes.
smallest to largest, including the sex chromosomes.
sex chromosomes first and then smallest to the largest. Question 18.18. If a cell has 4 pairs of chromosomes, after mitosis each daughter cell will have how many chromosomes? (Points : 1.25) 2
4
8
16
32 Question 19.19. At which stage of mitosis do you first see the chromosomes appearing? (Points : 1.25) prophase
metaphase
anaphase
telophase
cytokinesis Question 20.20. Two sister chromatids are held together at the (Points : 1.25) centromere.
spindle.
aster.
telomere.
autosome. Question 21.21. The earlier a cancer is detected, the more likely it can be effectively treated. (Points : 1.25) TRUE
FALSE Question 22.22. Which of the following is a side effect of radiation therapy that is not also a side effect of chemotherapy? (Points : 1.25) nausea, vomiting
dry, red, irritated skin and/or blisters
diarrhea
fatigue and weakness
weight loss and hair loss Question 23.23. How often should a woman do a shower self-examination of her breasts for lumps, knots, or changes? (Points : 1.25) daily
once a week
once a month
once every 6 months
once a year Question 24.24. Which of the following tests is not used to screen for colon cancer? (Points : 1.25) blood test
digital examination
flexible sigmoidoscopy
fecal occult blood test
double-contrast barium enema Question 25.25. Tumor suppressor genes are often likened to the gas pedal of a car. (Points : 1.25) TRUE
FALSE Question 26.26. Which of the following is not a characteristic of cancer cells that distinguishes it from normal cells? (Points : 1.25) Cancer cells lack differentiation.
Cancer cells have abnormal nuclei.
Cancer cells utilize mitosis to divide.
Cancer cells have an unlimited potential to replicate.
Cancer cells form tumors. Question 27.27. When the p53 gene is overexpressed in normal cells, the cells are killed. (Points : 1.25) TRUE
FALSE Question 28.28. Which of the following characteristics is not associated with metastasis? (Points : 1.25) The internal cytoskeleton is disorganized.
The cancer cells lack intact actin filament bundles.
Invasive cancer cells are sperm-shaped.
Cancer cells produce proteinase enzymes.
The low oxygen content in the middle of a tumor may turn on genes for angiogenesis. Question 29.29. Which of the following is not a stage in carcinogenesis? (Points : 1.25) initiation
promotion
progression
differentiation
angiogenesis Question 30.30. The ends of the chromosomes are "capped" with special repetitive DNA sequences called (Points : 1.25) radiata.
telomeres.
centromeres.
oncogenes.
suppressor genes. Question 31.31. When you describe a person as having attached ear lobes, you are describing their genotype. (Points : 1.25) TRUE
FALSE Question 32.32. If a person with type B blood marries a person with type A blood, what phenotypes can their children be? (Points : 1.25) all type A
all type B
types A and O
types B and O
types A, B, O, and AB Question 33.33. In a pedigree, an affected male would be designated by (Points : 1.25) an open circle.
a shaded circle.
an open square.
a shaded square.
a square with a line through it. Question 34.34. While a locus refers to a unit of heredity, a gene refers to a specific position on a chromosome. (Points : 1.25) TRUE
FALSE Question 35.35. Of the three possible alleles for the ABO blood type, each individual can have how many? (Points : 1.25) one
two
three
none
half an allele Question 36.36. Clasp your hands together (without thinking about it). Which thumb is on top every time you do this? The dominant phenotype is left thumb on top. If you have the genotype "tt", which thumb is on top? (Points : 1.25) left
right
left 50% of the time and right 50% of the time
left 25% of the time and right 75% of the time
left 75% of the time and right 25% of the time Question 37.37. There are two different alleles for the number of fingers on the hands: 5 finger allele and 6 finger allele. When both the 5 finger allele and the 6 finger allele are present in the same individual, the individual has 6 fingers on the hands. Which allele is dominant? (Points : 1.25) 5 fingers
6 fingers
1 finger
11 fingers
7 fingers Question 38.38. Can two parents that have a genetic disorder ever have a normal child? (Points : 1.25) YES
NO Question 39.39. In an X-linked dominant trait, affected males pass the trait only to daughters. (Points : 1.25) TRUE
FALSE Question 40.40. In a dihybrid cross, if the resulting ratios are 1:1:1:1, what are the genotypes of the parents? (Points : 1.25) GgRr x ggrr
GGRR x ggrr
GgRr x GgRr
Gg x Rr
GG x RR Question 41.41. In what way are DNA and RNA similar? (Points : 1.25) Both contain C, A, and G.
Both contain deoxyribose.
Both contain U, C, and G.
Both are single stranded.
Both form a double helix. Question 42.42. Which of the following is the monomer unit of DNA? (Points : 1.25) amino acids
fatty acids
nucleotides
carbohydrate rings
steroid rings Question 43.43. Which of the following is not true about the structure of DNA? (Points : 1.25) The sides of the ladder structure are made up of sugar and phosphate.
The bases form the "rungs" of the ladder structure.
The two strands are considered parallel.
The ladder structure is twisted into a double helix.
A always pairs with T and G always pairs with C. Question 44.44. How many different amino acids are commonly found in proteins? (Points : 1.25) 5
10
20
50
over 100 Question 45.45. The denaturation of which enzyme would lead to incorrect base pairing of nucleotides during DNA replication? (Points : 1.25) DNA polymerase
DNA ligase
DNA helicase
binding proteins
Okazaki fragments Question 46.46. What is the name of the enzyme that fits new complementary DNA nucleotides into the new strand? (Points : 1.25) DNA polymerase
DNA helicase
DNA replicase
DNA ligase
DNA telomerase Question 47.47. In the RNA sequence CAAUGACCAG, what will be the first amino acid incorporated? (Points : 1.25) alanine
glutamine
methionine
valine
glycine Question 48.48. DNA replication is considered (Points : 1.25) conservative.
semiconservative.
dispersive.
relaxed.
stringent. Question 49.49. What is the role of the enzyme ligase in DNA replication? (Points : 1.25) It unzips the double-stranded DNA.
It seals any breaks in the sugar-phosphate backbone.
It breaks the hydrogen bonds that hold the two strands of the DNA together.
It matches new bases to the old strand by complementary base pairing.
It folds the DNA into a coiled structure. Question 50.50. Which of the following would be an example of pretranscriptional control? (Points : 1.25) The chromosomes must decondense.
Transcription factors help initiate transcription.
The mRNA is processed before it leaves the nucleus.
The life expectancy of the mRNA molecules vary.
The polypeptide product is folded to form its functional conformation. Question 51.51. Both the RNA-first and the protein-first hypotheses must propose a manner for DNA to become the genetic material as it is today. (Points : 1.25) TRUE
FALSE Question 52.52. The early atmosphere of Earth consisted mainly of (Points : 1.25) hydrogen, oxygen, and carbon dioxide.
oxygen, water vapor, and carbon monoxide.
water vapor, nitrogen, and carbon dioxide.
hydrogen, carbon monoxide, and nitrogen.
water vapor, hydrogen, and carbon dioxide. Question 53.53. What energy source was used by Stanley Miller in his 1953 experiment to replicate the Earth's early environment? (Points : 1.25) electric spark
heat
ultraviolet radiation
gamma radiation
sunlight Question 54.54. What is the name of the hypothesis that states that the very first living thing came from nonliving chemicals? (Points : 1.25) cell theory
chemical evolution
Darwinian evolution
speciation
organic chemistry Question 55.55. What is considered one of the best sources of evidence for biological evolution? (Points : 1.25) fossil record
biogeographical evidence
anatomical evidence
biochemical evidence Question 56.56. There are two important aspects to biological evolution: descent from a common ancestor and the fossil record. (Points : 1.25) TRUE
FALSE Question 57.57. Which of the following was not an energy source on early Earth? (Points : 1.25) volcanoes
meteorites
lightning
ozone layer
ultraviolet radiation Question 58.58. Are you likely to find abundant fossils of soft bodied animals like jellyfish? (Points : 1.25) YES
NO Question 59.59. Biological evolution is the process whereby (Points : 1.25) humans descended from apes.
species change through time.
living cells arose from nonliving chemicals.
prokaryotic cells became eukaryotic cells.
only the strongest survive. Question 60.60. Closer biochemical structures suggest a closer evolutionary relationship. (Points : 1.25) TRUE
FALSE Question 61.61. Minerals in rocks are considered what type of component of a chemical cycle? (Points : 1.25) reservoir
exchange pool
biotic community
biotic
none of these Question 62.62. What is the exchange pool for the carbon cycle? (Points : 1.25) the ocean
carbon dioxide in the atmosphere
plants
algae
soil Question 63.63. How much of the food energy taken in by an herbivore is passed on to a carnivore? (Points : 1.25) 1%
5%
10%
50%
90% Question 64.64. Decomposers perform a valuable service because they recycle nutrients. (Points : 1.25) TRUE
FALSE Question 65.65. What is the loss of water from plants called? (Points : 1.25) runoff
precipitation
evaporation
transpiration
transference Question 66.66. What is involved in the process of denitrification? (Points : 1.25) conversion of nitrogen gas to ammonium
conversion of nitrogen gas to nitrate
conversion of ammonium to nitrate
conversion of nitrite to nitrate
conversion of nitrate to nitrogen gas Question 67.67. What is the reservoir for the water cycle? (Points : 1.25) ocean
lakes and rivers
rainfall
aquifers
atmosphere Question 68.68. How is carbon dioxide used by living organisms? (Points : 1.25) by breathing
by cellular respiration
by photosynthesis
by combustion
by decay Question 69.69. There is more nitrogen gas in the atmosphere than there is oxygen. (Points : 1.25) TRUE
FALSE Question 70.70. What do autotrophs require in order to produce food for themselves and all the heterotrophs? (Points : 1.25) sunlight, inorganic nutrients
sunlight, organic nutrients
an energy source, water
an energy source, inorganic nutrients
heat, water Question 71.71. The age structure diagram of MDCs is shaped like (Points : 1.25) a pyramid.
an inverted pyramid.
a rectangle.
an oval.
a cube. Question 72.72. Which of the following is a renewable resource? (Points : 1.25) land
solar energy
fossil fuels
minerals
oil Question 73.73. What do hydropower and wind power have in common? (Points : 1.25) Both require the building of dams.
Both lead to an increase in greenhouse gas emissions.
Both are renewable energy sources.
Both result in the depletion of fossil fuels.
Both require the use of photovoltaic cells. Question 74.74. Define an ecological footprint. (Points : 1.25) the total amount of resources used by an individual to meet their needs
the amount of food a person needs to eat
the amount of water a person needs to meet their needs
the amount of land a person needs to provide a place to live
the amount of energy a person needs to meet their needs Question 75.75. What is the definition of biotic potential? (Points : 1.25) a relatively slow (lag) population growth
maximum growth rate under ideal conditions
maximum population the environment can sustain
the birthrate or natality
the death rate or mortality Question 76.76. In MDCs, many people do not eat enough protein. (Points : 1.25) TRUE
FALSE Question 77.77. Why should pregnant women and small children not eat certain fish? (Points : 1.25) herbicide contamination
mercury contamination
pesticide contamination
lead contamination
PCB contamination Question 78.78. A sustainable society is one that provides all of the goods and services desired by humans. (Points : 1.25) TRUE
FALSE Question 79.79. Most of the freshwater in the world is used for (Points : 1.25) drinking.
bathing.
irrigation.
watering lawns.
industrial needs. Question 80.80. The more-developed countries have typically always had low population growth rate. (Points : 1.25) TRUE
FALSE Question 1.1. Sperm cannot develop at body temperature (37 degrees Celsius). (Points : 1.25) TRUE
FALSE
Explanation / Answer
Question 1.1.
TRUE
Question 2.2.
FALSE
Question 3.3
23
Question 4.4.
TRUE
Question 5.5
Ovulation
Question 6.6.
Produce FSH and LH
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