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Biology & Geology (STEM)

Chapter 1 - Support and Movement in Living Organisms

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Chapter 2 - Hormonal Coordination in Living Organisms

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Chapter 3 - Reproduction in Living Organisms

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Chapter 4 - Immunity in Living Organisms

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Chapter 5 - Molecular Biology - DNA Structure and Function

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Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

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Chapter 7 - Geology, Earth Sciences and Ecology

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Quiz

Lesson 2 Quiz: Movement in Plants and Muscle Contraction Mechanics in Humans

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  • Questions count: 20
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1.
STEM Immunology Question 40: Which immune cells are directly responsible for secreting perforin proteins and granzymes to lyse virally infected cells and tumor cells?
Cytotoxic T-cells (CD8+ Tc) and Natural Killer (NK) cells
Helper T-cells (CD4+ Th) exclusively
Plasma B-cells secreting IgG
Mast cells releasing histamine
2.
STEM Endocrinology Question 1: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Myxedema resulting from severe hypothyroidism in adults
Simple endemic goiter due to iodine deficiency
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Cushing's syndrome from elevated cortisol
3.
STEM Molecular Genetics Question 8: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They prevent plasmids from entering bacterial cells
They permanently destroy DNA ligase activity
They mutate bacterial resistance genes permanently
4.
STEM Molecular Genetics Question 9: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They permanently destroy DNA ligase activity
5.
STEM Geology Question 27: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Thrust fault with an inclination angle less than 45 degrees
Strike-slip fault with purely horizontal displacement
Reverse fault caused by lateral compressional stress
Normal fault resulting from crustal extensional (tensional) forces
6.
STEM Endocrinology Question 35: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Cushing's syndrome from elevated cortisol
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Simple endemic goiter due to iodine deficiency
Myxedema resulting from severe hypothyroidism in adults
7.
STEM Geology Question 33: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Reverse fault caused by lateral compressional stress
Strike-slip fault with purely horizontal displacement
Thrust fault with an inclination angle less than 45 degrees
Normal fault resulting from crustal extensional (tensional) forces
8.
STEM Molecular Genetics Question 23: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They permanently destroy DNA ligase activity
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
9.
STEM Molecular Genetics Question 41: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
They permanently destroy DNA ligase activity
10.
STEM Geology Question 3: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Reverse fault caused by lateral compressional stress
Normal fault resulting from crustal extensional (tensional) forces
Strike-slip fault with purely horizontal displacement
Thrust fault with an inclination angle less than 45 degrees
11.
STEM Geology Question 32: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Reverse fault caused by lateral compressional stress
Thrust fault with an inclination angle less than 45 degrees
Strike-slip fault with purely horizontal displacement
Normal fault resulting from crustal extensional (tensional) forces
12.
STEM Endocrinology Question 29: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Cushing's syndrome from elevated cortisol
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Simple endemic goiter due to iodine deficiency
Myxedema resulting from severe hypothyroidism in adults
13.
STEM Molecular Genetics Question 29: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They permanently destroy DNA ligase activity
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
14.
STEM Geology Question 26: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Normal fault resulting from crustal extensional (tensional) forces
Thrust fault with an inclination angle less than 45 degrees
Strike-slip fault with purely horizontal displacement
Reverse fault caused by lateral compressional stress
15.
STEM Molecular Genetics Question 17: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They permanently destroy DNA ligase activity
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
16.
STEM Molecular Genetics Question 2: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They prevent plasmids from entering bacterial cells
They mutate bacterial resistance genes permanently
They permanently destroy DNA ligase activity
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
17.
STEM Geology Question 25: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Thrust fault with an inclination angle less than 45 degrees
Reverse fault caused by lateral compressional stress
Normal fault resulting from crustal extensional (tensional) forces
Strike-slip fault with purely horizontal displacement
18.
STEM Endocrinology Question 34: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Simple endemic goiter due to iodine deficiency
Cushing's syndrome from elevated cortisol
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Myxedema resulting from severe hypothyroidism in adults
19.
STEM Geology Question 19: Which type of geological fault is formed when hanging-wall rocks slide downward relative to the footwall under tensional stress?
Reverse fault caused by lateral compressional stress
Strike-slip fault with purely horizontal displacement
Thrust fault with an inclination angle less than 45 degrees
Normal fault resulting from crustal extensional (tensional) forces
20.
STEM Immunology Question 39: Which immune cells are directly responsible for secreting perforin proteins and granzymes to lyse virally infected cells and tumor cells?
Cytotoxic T-cells (CD8+ Tc) and Natural Killer (NK) cells
Plasma B-cells secreting IgG
Helper T-cells (CD4+ Th) exclusively
Mast cells releasing histamine
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