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Biology & Geology

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: Identification of DNA as Genetic Material

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  • Questions count: 20
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1.
If both the absolute temperature and the absolute pressure of a confined ideal gas are doubled, the volume of the gas:
Doubles to twice its original volume
Remains constant and unchanged
Quadruples
Decreases to one-fourth
2.
In the life cycle of the fougere plant (a fern), the haploid (N) gametophyte produces its male and female gametes by:
Direct meiosis
Regeneration
Surface budding
Mitosis within antheridia and archegonia
3.
The hormone that affects both glandular and non-glandular tissue in the adult female body is:
Oxytocin
Growth hormone
Aldosterone hormone
Calcitonin hormone
4.
The universal gas constant R in SI units has the numerical value and dimensions of:
0.0821 J / mol
6.022 x 1023 J / K
1.38 x 10−23 Pa . m3
8.314 J / (mol . K)
5.
The cells that secrete the hormones oxytocin and ADH and store them in the posterior lobe of the pituitary gland are:
Frontal lobe glandular cells
Glial cells
Pineal gland cells
Apocrine neurons in the hypothalamus (hypothalamus)
6.
The equation of the tangent line to the curve y = x3 at the point (1, 1) is:
y = -3x + 4
y = x
y = 3x + 1
y = 3x - 2
7.
Mutations that are inherited to future generations and occur in reproductive cells that produce gametes are called:
Gamete mutations
Rebound mutations
Temporary spikes
Somatic mutations
8.
The amount of DNA in a human female secondary oocyte compared to a resting somatic skin cell (before replication begins) is:
Half the quantity
Equal (contains 46 DNA molecules in the form of 23 diploid chromosomes)
Quarter
Weakness
9.
A fixed quantity of an ideal gas has a volume of 600 cm3 at 27 °C. If the gas is heated to 127 °C under constant pressure, its new volume will be:
800 cm3
900 cm3
700 cm3
1200 cm3
10.
A hormone secreted from the anterior lobe of the pituitary gland that stimulates the growth of Graafian follicles in the female ovary and the production of sperm in the male testicle is:
ACTH hormone
follicle stimulating hormone (FSH)
Luteinizing hormone (LH)
Prolactin hormone
11.
Solid ionic compounds such as crystal NaCl do NOT conduct electricity in the solid state because:
They contain no electrical charges
They decompose in the presence of air
Their ions are tightly locked in fixed positions within the rigid crystal lattice and cannot move freely
Electrons are moving too rapidly
12.
The second derivative d2y/dx2 of the function y = x4 - 2 x3 + 5 is:
12 x2 - 12 x
24 x - 12
12 x2 - 6 x
4 x3 - 6 x2
13.
A metallic bond is physically described as the electrostatic attraction between:
Protons and neutrons in the nucleus
Positive ions and negative non-metal anions
Dipole molecules in a polar liquid
Positive metal cations in the crystal lattice and the mobile sea of delocalized valence electrons
14.
The adrenal medulla is stimulated to secrete the emergency hormones adrenaline and noradrenaline via:
ACTH hormonal stimulation
Body temperature change
Rapid and direct sympathetic nervous stimulation in cases of fear, fight, and flight
High blood sugar
15.
According to Chargaff's rules's Rules) In the DNA double helix, the equal ratio is always:
The ratio of adenine A equals thymine T, and the ratio of guanine G equals cytosine C (A+G). = T+C)
A + T = G + C always
A = G And T = C
A / T = 2
16.
If the tangent to y = x2 - 4x + 5 is parallel to the x-axis, the point of tangency is:
(0, 5)
(2, 0)
(4, 5)
(2, 1)
17.
Peyer's spots's Patches) Tiny lymph nodes spread in the mucous membrane lining the:
Lower part of the small intestine (ileum)
Pharynx
esophagus
Stomach
18.
The hormone that is secreted from the corpus luteum and reaches its maximum concentration on days 21 to 23 of menstruation is:
Progesterone
LH hormone
FSH hormone
Estrogen
19.
The percentage of DNA encoding the construction of proteins and enzymes in the genetic content of eukaryotic cells (such as humans) represents approximately:
More than 90%
100%
Less than 2% Of the total cell genome
50%
20.
Sertoli cells in the seminiferous tubules of the human male testicle play a functional role in:
The secretion of a fluid that nourishes sperm inside the testicle and is thought to have an immunological function
Secretion of testosterone
Meiosis to produce precursors
Excretion of fructose
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