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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: Rock Cycle, Minerals, Crystallography and Weathering

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  • Questions count: 20
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1.
The hormone that affects both glandular and non-glandular tissue in the adult female body is:
Aldosterone hormone
Growth hormone
Calcitonin hormone
Oxytocin
2.
A gas cylinder contains 10 liters of gas at a pressure of 3.0 atm. If the volume is reduced to 2.5 liters at constant temperature, the new pressure inside the cylinder will be:
6.0 atm
12.0 atm
7.5 atm
1.2 atm
3.
The decomposition of the corpus luteum in the ovary of a non-pregnant woman at the end of the menstrual cycle results in:
Placenta formation
Secretion of huge amounts of LH
Continued growth of the uterine lining
A sharp drop in the concentration of the hormone progesterone leads to the breakdown of the uterine lining, the rupture of its capillaries, and the occurrence of menstruation
4.
The percentage of DNA encoding the construction of proteins and enzymes in the genetic content of eukaryotic cells (such as humans) represents approximately:
Less than 2% Of the total cell genome
50%
More than 90%
100%
5.
The number of amino acid molecules in a polypeptide chain resulting from mRNA translation consisting of 303 nucleotides, including the start and stop codons, is equal to:
101 Acid
100 Amino acid
99 Acid
300 Acid
6.
If the tangent to y = x2 - 4x + 5 is parallel to the x-axis, the point of tangency is:
(0, 5)
(4, 5)
(2, 1)
(2, 0)
7.
Magnetic iron oxide (Magnetite, Fe3O4) is chemically considered a mixed oxide because reacting it with hot concentrated sulfuric acid yields:
A mixture of iron(II) sulfate, iron(III) sulfate, and water vapor
Iron(II) sulfate and hydrogen gas only
Iron(III) sulfate only
Elemental iron and sulfur dioxide
8.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A torsion balance
A hydrometer
A venturi meter and manometer
9.
The global scientific project that was able to decipher and arrange more than 3 billion pairs of nitrogenous bases in human cells is:
Virus study project
Stem cell project
Acquired immunity project
Human Genome Project
10.
The enzyme that catalyzes the peptidyl transferase reaction and the formation of the peptide bond between amino acids during translation is:
Release factor protein
Helix enzyme
Part of the rRNA molecule that makes up the subunit of the ribosomal subunit
DNA polymerase enzyme
11.
The umbilical cord in the human fetus contains blood vessels that are characterized by:
One artery and two veins
Two arteries transport deoxygenated blood and waste from the fetus to the placenta, and one vein transports oxygenated blood and nutrients from the placenta to the fetus.
Devoid of blood vessels
All its vessels carry oxygenated blood
12.
Asexual reproduction differs from sexual reproduction in that:
It is based on a single parental individual and maintains genetic stability over generations because it is based on mitosis
Expensive in energy and time
It always requires the formation of gametes
Provides great genetic diversity
13.
The salivary glands and sweat glands in the human body are examples of:
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Common glands
Aductal endocrine glands
Steroid tissue
14.
The enzyme extracted from RNA viruses and used to convert mRNA into a single strand of complementary DNA (cDNA) is:
RNA polymerase enzyme
Reverse transcriptase
Ligase enzyme
Palace enzyme
15.
Lymphotoxins secreted by cytotoxic T cells (Tc) eliminate the infected cell by:
Calcium withdrawal
Activation of certain genes within the nucleus of the infected cell, which leads to the fragmentation of its genetic material and its programmed death (Apoptosis).
Blood plasma coagulation
Immunosuppression
16.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
The seminal vesicles
Prostate gland
Tomorrow Cooper
Epididymis
17.
The nitrogen molecule (N2) contains a:
Single ionic bond
Triple covalent bond (one sigma bond and two pi bonds) sharing 3 electron pairs
Coordinate dative bond
Double covalent bond
18.
Connecting two complementary DNA strands by hydrogen bonds makes them:
Two parallel strands in opposite directions that are chemically complementary
criss-crossing each lap
connected by peptide bonds
Two exactly identical bars in the same direction
19.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
Uterine cavity
The fallopian tube when the sperm enters the head for fertilization to occur
Ovaries before ovulation
Graaf's vesicle
20.
The density of an ideal gas at temperature T and pressure P is rho. If the pressure is tripled and the absolute temperature is halved, the new density becomes:
6 rho (since rho is proportional to P / T)
3 rho
1.5 rho
0.67 rho
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