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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 1 Quiz: Support in Plants and the Human Skeletal System

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  • Questions count: 20
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1.
STEM Geology Question 14: 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
2.
STEM Molecular Genetics Question 37: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They permanently destroy DNA ligase activity
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They mutate bacterial resistance genes permanently
They prevent plasmids from entering bacterial cells
3.
STEM Endocrinology Question 28: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Simple endemic goiter due to iodine deficiency
Myxedema resulting from severe hypothyroidism in adults
Cushing's syndrome from elevated cortisol
4.
STEM Molecular Genetics Question 24: 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
5.
STEM Geology Question 43: 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
Reverse fault caused by lateral compressional stress
Strike-slip fault with purely horizontal displacement
6.
STEM Endocrinology Question 40: A patient suffers from increased metabolic rate, weight loss, nervousness, and protruding eyes (exophthalmos). Which endocrine condition is most likely diagnosed?
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Myxedema resulting from severe hypothyroidism in adults
Simple endemic goiter due to iodine deficiency
Cushing's syndrome from elevated cortisol
7.
STEM Geology Question 26: 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
8.
STEM Ecology Question 7: In an arid desert ecosystem, what morphological adaptation enables xerophytic plants like Acacia and Opuntia to survive severe water scarcity?
Extensive deep or horizontal root systems, thick waxy cutin layers, and sunken stomata
Broad thin leaves with dense stomata on both surfaces
Absence of xylem vessels and thin cellulose walls
Rapid continuous transpiration during midday heat
9.
STEM Geology Question 6: 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
10.
STEM Ecology Question 8: In an arid desert ecosystem, what morphological adaptation enables xerophytic plants like Acacia and Opuntia to survive severe water scarcity?
Extensive deep or horizontal root systems, thick waxy cutin layers, and sunken stomata
Absence of xylem vessels and thin cellulose walls
Broad thin leaves with dense stomata on both surfaces
Rapid continuous transpiration during midday heat
11.
STEM Immunology Question 20: Which immune cells are directly responsible for secreting perforin proteins and granzymes to lyse virally infected cells and tumor cells?
Mast cells releasing histamine
Cytotoxic T-cells (CD8+ Tc) and Natural Killer (NK) cells
Helper T-cells (CD4+ Th) exclusively
Plasma B-cells secreting IgG
12.
STEM Geology Question 44: 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
13.
STEM Molecular Genetics Question 7: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
They prevent plasmids from entering bacterial cells
They permanently destroy DNA ligase activity
They have single-stranded overhangs that readily form complementary hydrogen bonds with matching foreign DNA fragments
They mutate bacterial resistance genes permanently
14.
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?
Simple endemic goiter due to iodine deficiency
Exophthalmic goiter (Hyperthyroidism caused by excessive thyroxine secretion)
Cushing's syndrome from elevated cortisol
Myxedema resulting from severe hypothyroidism in adults
15.
STEM Geology Question 23: 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
Strike-slip fault with purely horizontal displacement
Thrust fault with an inclination angle less than 45 degrees
Reverse fault caused by lateral compressional stress
16.
STEM Immunology Question 38: Which immune cells are directly responsible for secreting perforin proteins and granzymes to lyse virally infected cells and tumor cells?
Helper T-cells (CD4+ Th) exclusively
Cytotoxic T-cells (CD8+ Tc) and Natural Killer (NK) cells
Mast cells releasing histamine
Plasma B-cells secreting IgG
17.
STEM Endocrinology Question 5: 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
18.
STEM Endocrinology Question 26: 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
19.
STEM Molecular Genetics Question 28: Why are sticky ends produced by restriction endonucleases essential for constructing recombinant DNA plasmids?
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
They prevent plasmids from entering bacterial cells
20.
STEM Ecology Question 5: In an arid desert ecosystem, what morphological adaptation enables xerophytic plants like Acacia and Opuntia to survive severe water scarcity?
Broad thin leaves with dense stomata on both surfaces
Absence of xylem vessels and thin cellulose walls
Rapid continuous transpiration during midday heat
Extensive deep or horizontal root systems, thick waxy cutin layers, and sunken stomata
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