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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 2 Quiz: Adrenal Glands, The Pancreas and Reproductive Gonads

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  • Questions count: 20
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1.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
59,048
19,682
118,096
29,524
2.
Histone proteins responsible for shortening the length of the DNA molecule ten times and forming nucleosomes are characterized by being rich in the two basic amino acids:
Glycine and alanine
Methionine and tryptophan
Arginine and lysine (Arginine & Lysine)
Glutamic acid and aspartic acid
3.
Plant hormones are responsible for the phenomenon of leaf fall and fruit ripening and falling. Where the role of a hormonal gas increases:
Ethylene gas
Gibberellic acid
Abscisic acid
Auxin IAA
4.
The number of codons that code for the 20 amino acids in the genetic table is equal to:
32 Codona
61 Codons (out of a total of 64 codons after excluding the three stop codons)
64 Codona
20 Codona
5.
The sum of the first n terms of an arithmetic sequence (S_n) is formulated as:
S_n = n / 2 * [ 2a + (n - 1) * d ] = n / 2 * [ a + l ]
S_n = n * (a + d)
S_n = a / (1 - r)
S_n = a * (1 - rn) / (1 - r)
6.
The pulling movement occurs in bulbs and corms (such as carcasses and daffodils) with the aim of:
Pull the stored ground leg down to an appropriate level from the soil surface to secure and support it against the wind
Light absorption for photosynthesis
Getting rid of carbon dioxide
Repel terrestrial insects
7.
If the tangent to y = x2 - 4x + 5 is parallel to the x-axis, the point of tangency is:
(4, 5)
(2, 0)
(0, 5)
(2, 1)
8.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
CH3COOH
NH4OH
HCl
NaCl
9.
If a particle moves along a straight line such that its position s(t) = t3 - 6 t2 + 9 t meters, the particle comes to an instantaneous rest (velocity v(t) = 0) at times:
t = 2 seconds and t = 4 seconds
t = 1 second and t = 3 seconds
t = 6 seconds
t = 0 seconds only
10.
Identical (monozygotic) twins arise genetically as a result of:
Artificial parthenogenesis
Fertilization of one egg by one sperm, then the resulting cell mass is divided into two parts that are identical in genetic makeup and sex.
Fertilization of two eggs by two different sperm
Fertilization of one egg by two sperm
11.
Which of the following immune structures represents the first line of defense in the human body to prevent the entry of pathogens?
Intact skin with its stratum corneum, mucus, HCl in the stomach, and saliva saturated with lysozyme
Toxic T cells
Antibodies
Macrophages
12.
Which of the following alloys is classified as an interstitial alloy?
Carbon steel (Iron and Carbon where small carbon atoms occupy interstitial voids)
Brass (Copper and Zinc)
Duralumin (Aluminum and Copper)
Stainless steel (Iron, Chromium, and Nickel)
13.
Acids are chemical compounds that dissociate in aqueous solutions to produce:
Hydroxide ions (OH-) turning red litmus paper blue
Hydrogen ions (H+ or hydronium ions H3O+), turning blue litmus paper red
Precipitated metallic salts
Sodium ions and chlorine gas
14.
Which enzyme is responsible for linking Okazaki fragments into a continuous strand during lagging strand replication?
DNA Polymerase
Reverse Transcriptase
DNA Helicase
DNA Ligase
15.
Absolute zero temperature (0 Kelvin or -273.15 °C) is defined physically as the theoretical temperature at which:
The volume and pressure of an ideal gas theoretically extrapolate to zero and translational molecular motion reaches its quantum minimum
Atmospheric air completely combusts
Water reaches its maximum density
All liquids solidify into glass
16.
Which of the following organisms has its genetic material as a single molecule of RNA rather than DNA?
Escherichia coli bacteria
Human immunodeficiency virus (HIV), polio virus, influenza and coronavirus
Bacteriophage T2
Yeast
17.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
fridges
blenders
looms
kilns
18.
A chemical substance used in the laboratory to cause mutations and chromosome duplication in the growing tips of plants is:
Sucrose solution
Glycerin
Hyaluronic acid
Colchicine, mustard gas, or nitrous acid
19.
Okazaki Fragments formed on the die strip (5' to 3') During DNA replication they are joined by an enzyme:
DNA ligase
Polymerase enzyme
Tac polymerase enzyme
Helix enzyme
20.
The slope of the tangent line to the curve y = x2 - 6 x + 5 at the point (4, -3) equals:
m = -3
m = 8
m = -2
m = 2
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