Download Biology 3 Questions 1. Which is found in prokaryotic cell? (Cell)

Biology 3 Questions
1. Which is found in prokaryotic cell? (Cell)
a) Lysosomes
b) Ribosomes
c) Nucleus
d) All are found
2. Amylases are secreted by (Digestive system)
a) Pancreas
b) Salivary gland
c) Large intestine
d) A and C
e) A and B
3. Which is true about thylakoids? (Photosynthesis)
a) Structural components of the mitochondrial membrane
b) A series of disks stacked on each other that contain pigments needed for
photosynthesis
c) Structural that control gas exchange
d) They are disk-shaped structure that consist of undifferentiated meristem
cells
4. A nucleotide consist of (DNA/RNA)
a) Phosphate and base
b) Sugar and base
c) Phosphate, sugar, base
d) Phosphate only
e) Sugar only
5. Glucose- Glucose-6-phosphate (Cellular Repiration)
What type of enzyme catalyzes this reaction?
a) Isomerase
b) Kinase
c) Phosphatase
d) Lyase
e) Dehydrogenase
6. Which is true? (Mitosis)
a) During anaphase the nucleolus reappears
b) Cytokinesis occurs during metaphase
c) Centriole separation occurs during Prophase
d) Spindle fibers begin to form during metaphase
7. Which is false about a virus? (DNA/RNA)
a) They can contain DNA and RNA but never both
b) They are obligate intracellular parasite
c) They are unable to reproduce outside a living cell
d) Many use reverse transcriptase enzyme to produce an RNA copy from a DNA
e) The capsid of the virus may be spherical or rod-like.
8. A colorblind man marries a normal homozygous woman. If they have children,
what’s the probability that their son will be colorblind? (Genetics)
a) 100%
b) 75%
c) 50%
d) 25%
e) 0%
9. Which is not an assumption for Hardy-Weinberg equilibrium? (Evolution)
a) No isolation
b) No net migration
c) No natural selection
d) No mutation
e) All are assumption
10. Which is false? (DNA/RNA)
a) The genetic code is degenerate—this is many amino acid are coded for by more
than one codon
b) An anticodon is a tripet of nucleotide on the t-RNA
c) The attachment of a chromosome fragment to a non-homologous chromosome
are called an inversion
d) Mitochondral DNA is inherited from the mother.
11. A protein of 210 amino acids is made from how many DNA nucleotides?
(DNA/RNA)
a) 70
b) 630
c) 210
d) 105
e) 840
12. Which is false? (DNA/RNA/Meosis)
a) DNAmRNA during transcription
b) A sample with a high A-T ratio will melt lower than one with C-G
c) Down syndrome result from a non-disjunction of chromosome 21
d) Meiosis will reduce the chromosome number
e) All are true
13. Which is correctly matched? (Mitosis/Meiosis)
a) Klinefelter syndrome: 44 chromosome+XXY
b) Turner syndrome: Sterile female lacking X chromosome
c) Down syndrome: 47 chromosome
d) Hemophilia: sex-linked disorder
e) All are correct
14. Which is true about enzymes? (Enzyme/Energy)
a) Alter delta H
b) Alter energy of activation
c) They may be deactivated by feedback inhibition
d) Two above
15. Which is false? (Cell, DNA/RNA)
a) The PH of a lysosome is less than 7
b) A Golgi body lacks a membrane
c) The transfer of DNA by a virus is called transduction
d) All are false
16. The inferior vena cava carries blood from the lower extremities to (Circulatory
system)
a) Left atria
b) Right atria
c) Left ventricle
d) Right ventricle
e) Pulmonary trunck
17. Which is false? (Respiratory system)
a) A small increase in [H+] will decrease breathing rate
b) Low blood CO2 partial pressure would decrease breathing rate
c) High blood O2 partial pressure would decrease breathing rate
d) All are true
18. Which is false? (Photosynthesis)
a) The dark reaction of photosynthesis can occur if there is light
b) NADPH is needed in the dark reaction of photosynthesis
c) During the light reaction of photosynthesis, a low concentration of hydrogen ions
are produced within the thylakoids
d) Six turns of the Calvin cycle are required to produce one glucose molecules.
19. Applying the Hardy-Weinberg law to a trait within two alleles, a scientist
calculates a frequency of 0.2 for the recessive allele, what frequency would the
dominant phenotype be? (Evolution)
20. A DNA segment has 5’-CCGAAT-3’ what would be its mRNA? (DNA/RNA)
21. Which is false? (Cell)
a) As the degree of unsaturation of a cell membrane increases, the fluidity increases
b) As the number of double bonds in a fatty acid increases, the fluidity increases
c) If an E.Coli were put in a warmer growth environment, it would increase
unsaturated fatty acid and content of its membrane
d) Individual lipid molecules can diffuse freely in a lateral fusion within the bilayer
surface.
22. Which is incorrectly matched? (Circulatory system)
a) Fish: 2-chambered heart
b) Frog: 3-chambered heart
c) Artery: no valves
d) Pulmonary vein: deoxygenated blood
23. Which may have originated as a symbiotic prokaryote? (Cell/Evolution)
a) Mitochondria
b) Golgi bodies
c) Chloroplast
d) Lysosomes
e) A, C
24. Which is false? (Digestive/Immune system)
a) Digested fatty acids are absorbed by the lacteals within the small intestine villi
b) Bile does not contain any enzyme
c) Greater surface area needed for food absorption is due to the villi
d) Neutrophils are phagoctic cells that develop into macrophages
25. A somatic cell after S phase has been observed to have 10 chromosomes. How
many chromatids is this? (Mitosis/Meiosis)
a) 5
b) 10
c) 20
d) 40
e) 15
26. Which is true about an autosomal recessive disease? (Genetics)
a) Male are affected more than female
b) It never skips generation
c) Heterozygotes do not have trait
d) Children that have the trait can have parents that do not
e) c, d
27. Which is false about the Krebs cycle? (Cellular respiration)
a) It represents a phase of aerobic respiration
b) 3NADH, 1FADH2, 1ATP are produced per turn of the cycle
c) The reaction occurs within the matrix of the mitochondria
d) One molecule of glucose produces 2 turns of the cycle
e) All ture
28. Bacteria derive their energy from (Cell/Cellular respiration)
a) Krebs cycle
b) Glycolysis
c) Electron transport chain
d) A, B
e) B, C
29. Which is false? (Mitosis/meiosis/endocrine system)
a) DNA is replicated at interphase
b) Insulin decrease blood glucose
c) Glucogon increase blood glucose
d) Crossing over is seen during prophase II of Meiosis
30. A normal woman had a colorblind mother. She married a colorblind man. What’s
the probability that her first daughter will be colorblind? (Genetics)
31. A dihybrid cross was done between tall round preas. Tall is dominant to short,
round is dominant to wrinkled. What fraction of the offspring will be short and
wrinkled? (Genetics)
32. What is produced by the transcription process and is subsequently translated to
form proteins. (DNA/RNA)
a) r-DNA
b) m-RNA
c) t-RNA
d) DNA
e) protein
33. Where is cholorphyll found? (Photosynthesis)
a) Intermembrane space of chloroplast
b) Thylakoid membrane
c) Cell wall
d) Mitochondria
34. Which is false? (Cellular respiration/Fermentation)
a) A net gain of 2ATP is seen when glucose forms lactate
b) Glycolysis is anaerobic respiration and can supply energy even if no TCA cycle
operates.
c) Actively contracting muscle tissue has a higher amount of pyruvate than resting
muscle tissue
d) In yeast growing anaerobically, pyruvate is converted to ethanol.
35. Consider a DNA sample, which is true? (DNA/RNA)
a) A=C
b) C=U
c) A+T=C+G
d) C+T=A+G
36. Consider 5’-AATCGACCT-3’, this deoxyribnucleotide polymer could form a
double stranded structure with what? (DNA/RNA)
37. Steroid hormones are synthesized from? (Endocrine system)
a) Acyl-CoA
b) Cholesterol
c) Amino acid
d) Fatty acid
38. Bill and Ann have normal vision, but their father both colorblind. What is the
probability that their first child will be a normal boy? (Genetics)
39. Which is incorrectly matched? (Photosynthesis, Evolution, Endocrine system)
a) Chlorophyll: Mg
b) Homologous structure: Common ancestor
c) Hypothalamus: temperature regulation
d) Carbon fixation: Light reaction
40. A man with type A blood has children with a woman of type B. If both are
assumed to be heterozygous, what’s the probability of an AB child? (Genetics)
41. A red blood cell placed in distilled H2O will? (Transport)
42. Which is true? (Mitosis/Meiosis)
a) DNA synthesis occurs during S-phase
b) In G2, the cell prepares to divide
c) During G1, we see the production of mitochondria, ribose and much protein
synthesis
d) All are true
43. During denaturation of a protein there’s a change in (Organic molecules)
a) 1’ structure
b) 2, 3’ structure
c) 2,3,4’ structure-d) 1, 2’ structure
e) 1,2,3,4’ structure
44. Which process generates the most ATP? (Cellular repiration)
a) Glycolysis
b) Electron transport chain
c) Krebs cycle
d) A, D
45. Where is bile produced? (Digestive system)
a) Pancreas
b) Liver
c) Gall bladder
d) Kidney
e) Adrenal gland
46. Which goes against a concentration gradient? (Transport)
a) Osmosis
b) Diffusion
c) Active transport
d) Simple transport
e) Facilitated transport
47. Glycolysis will produce? (Cellular respiration)
a) 2ATP net
b) 2 NADH
c) 2 moles pyruvate
d) 2H+
e) All
48. If 36% of a population has dominant alleles, what is the frequency of recessive
allele? (Evolution)
49. Which is false? (Cellular respiration)
a) The electron transport chain pumps protons out of the mitochondria matrix , thus
creating a proton gradients
b) Oxygen is the final electron acceptor
c) Each NADH yield approximately 3ATP and each FADH=2ATP
d) Oxygen is needed for the electron transport chain to operate
e) The NAD+ and FAD generated in glycolysis and Krebs cycle transfer electron to
the electron transport chain
50. Which is false? (immune system)
a) B cells are lymphocytes that mature in bone marrow and mediate antibody
directed immunity
b) Stem cells in the bone marrow produce lymphocyte by meiosis
c) Antibodies are produced by B cell and can bind to antigen
d) In cell-mediated immunity T cell respond to virally infected cells.
e) all true
51. An egg cell will contain (Mitosis/Meiosis)
a) 23 chromosomes, 46 chromatids
b) 23 chromosomes, 23 chromatids
c) 46 chromosomes, 46 chromatids
d) 46 chromosomes, 23 chromatids
e) 48 chromosomes, 24 chromatids
52. The frequency for the allele for cystic fibrosis, an autosomal recessive trait is 1 in
2500 among white Americans. What’s the frequency of heterozygote? (Evolution)
53. Which is false? (Immune system)
a) Lymph nodes may contain lymphocytes and microphages
b) Plasma cells produced antibody
c) The greatest resistance to blood flow is in the arterioles
d) In normal adult, there are eight premolars
e) All true
54. Which DNA will be most heat resistance? (DNA/RNA)
a) 0.82 AT/CG ratio
b) 0.95
c) 0.4
d) 1.3
e) 0.52
55. Shrinkage of a cell due to H2O loss is called (Transport)
a) Hydrolysis
b) Osmosis
c) Plasmolysis
d) Diffusion
e) Active transport
56. Which is false? (Genetics)
a) Each gene pair tends to assort into gametes independently of other gene pairs
that are located on nonhomologous chromosomes
b) An observable trait of an organism is termed its phenotype
c) An allele is an alternative molecular form of a gene
d) Mitochondria and chloroplasts contain their own DNA
e) All true
57. If an organism has a diploid number of 18, how many chromatids are visible at
the end of mitotic prophase? (DNA/RNA)
58. A PH gradient is seen in which process? (Cellular respiration)
a) Fermentation
b) Glycolysis
c) Electron transport chain
d) Krebs cycle
59. Rank the following in order of increasing size: (Cell)
Gene, thymine, adenine, chromsome, nucleus
60. Which is false? (Cell/immune system)
a) The PH of the cytosol(cytoplasma) is more acidic than the lysosome
b) Lysosomes are found in both plant and animal cells
c) Macrophages are differentiated from monocytes
d) Macrophages are rich in lysosome
e) All true
61. Food is prevented from entering the lungs due to the (Digestive system)
a) Larynx
b) Pharynx
c) Esophagus
d) Epiglottis
e) None
62. A bacteriophage contains (DNA/RNA)
a) Nucleus
b) Lysosomes
c) Golgi body
d) DNA or RNA
63. Which is correct when the graph levels off (Enzyme)
a) The enzyme is being degraded
v
b) The enzyme is saturated with substrate
c) The rate is ½ Vmax
d) The substrate is being degraded
[s]
64. Reverse transcriptase is found in (DNA/RNA)
a) Bacterium
b) Retrovirus
c) Plasmid
d) DNA virus
65. Which is false about photosynthesis? (Photosynthesis)
a) CO2 is the carbon source in sugar produced
b) The light reaction of photosynthesis occur in the thylokoid membrane
c) The source of O2 produced is the H2O that is split during the light reaction
d) Glucose is a product of the light reaction of photosynthesis
e) all true
66. Which is false? (Organic molecule)
a) The beta sheet represents a 2’ structure held together by hydrogen bond
b) The alpha helix is held together by hydrogen bond
c) Myoglobin contains a quaternary structure
d) Hemoglobin contains a quaternary structure
67. Most CO2 in the body is transported in the blood as (Respiratory system)
68. Which is present both in Eukaryote and prokaryote? (Cell)
a) Ribosome
b) Golgi apparatus
c) Cell wall
d) Lysosome
e) Nucleus
68. The food and air passage cross where? (Digestive system/Respiratory system)
a) Pharynx
b) Larynx
c) Bronchi
d) Alveoli
e) Nasal cavity
69. Put them in correct sequence for inspired air? (Respiratory system)
Alveoli, bronchus, trachea, bronchiole, nasal cavity
70. Consider a DNA undergoes 4 rounds of replication. What percent of the double
strand DNA produced contains part of the original DNA? (DNA/RNA)
71. Which is false about enzyme? (Enzyme)
a) A competitive inhibitor resembles the substrate and competes for the active site
b) The active site may contain non-protein constituent which are needed for
catalytic efficiency
c) In non-competitive inhibitor, the inhibitor binds to a site other than the active site
d) Addition of more substrate can overcome a competitive inhibitor
e) all true
72. Protein molecules may be modified by addition of sulfate, carbohydrate or lipid
group to the side chains of certain amino acids. Which organelles perform this
primary modification site? (Cell)
a) Golgi complex
b) lysosome
c) Sooth ER
d) Rough ER
e) Ribosome
73. Which is false? (DNA/RNA)
a) Exons are the DNA bases that are transcribed
b) Introns are DNA bases that can be found between exons, but not transcribed
c) Introns get transcribed into proteins
d) All are true
74. During inspiration, which is true? (Respiratory system)
a) The lung becomes inflated
b) The thoracic pressure decreases as the thoracic cavity size increases
c) The diaphragm move downward
e) All are true
75. During the light reaction of photosynthesis (Photosynthesis)
a) CO2 is converted into glucose
b) ATP is produced, NADP+ is oxidized, water is reduced
c) H2O is oxidized, ADP is produced, NADPH is oxidized
d) NADP+ is reduced, H2O is oxidized, ATP is produced
e) Glucose is synthesized, O2 is released, ATP is produced