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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.
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:
700 cm3
900 cm3
800 cm3
1200 cm3
2.
Experiments using genes for resistance to insect pests in crop plants (such as the Bacillus thuringiensis gene) are an application to:
Artificial parthenogenesis
Parthenogenetic fruiting
Genetic engineering and development of genetically modified plants resistant to pests without chemical pesticides
Propagation by hydroponics
3.
The sequence is repeated more than one hundred thousand times in the middle of one of the chromosomes of the Drosophila insect (fruit fly) and does not code for any protein:
AGACT
UAA
AUG
TATAAT
4.
When a gas trapped inside a rigid container of fixed volume is heated from 27 °C (300 K) to 127 °C (400 K), its pressure increases by a factor of:
127 / 27
16 / 9
4 / 3 (since P1 / T1 = P2 / T2)
2 times
5.
The enzyme found in the apical body (Acrosome) of the sperm that helps it penetrate the compact envelope of the egg is:
Hyaluronidase enzyme
Cholinesterase enzyme
Amylase enzyme
pepsin enzyme
6.
The enzyme extracted from RNA viruses and used to convert mRNA into a single strand of complementary DNA (cDNA) is:
RNA polymerase enzyme
Ligase enzyme
Palace enzyme
Reverse transcriptase
7.
The number of polar bodies resulting from the maturation and fertilization of 3 primary oocytes in the ovary of a human female is equal to:
9 Polar bodies (assuming division of the first polar body)
6 Polar bodies
3 Polar bodies
12 A polar body
8.
Which of the following oxides is classified as an amphoteric oxide that reacts with both acids and bases to yield salt and water?
Aluminum oxide (Al2O3)
Carbon dioxide (CO2)
Sulfur trioxide (SO3)
Sodium oxide (Na2O)
9.
The hormone that affects both glandular and non-glandular tissue in the adult female body is:
Calcitonin hormone
Growth hormone
Oxytocin
Aldosterone hormone
10.
The main chemical reducing agent inside the Midrex furnace and its industrial source are respectively:
Pure carbon monoxide (CO) produced from metallurgical coke
Hydrogen gas produced from the electrolysis of water
Carbon dioxide mixed with limestone
Water gas (mixture of CO and H2) produced from natural gas (methane CH4)
11.
The hormone responsible for maintaining the balance of minerals in the blood by stimulating the reabsorption of sodium ions and eliminating excess potassium through the kidneys is:
Cortisol hormone
Insulin hormone
Thyroxine hormone
Aldosterone
12.
Complements are a group of plasma proteins that activate when an antibody binds to an antigen and work to:
Decomposing the antigenic envelope and dissolving its contents to facilitate their ingestion by macrophages
Histamine secretion
Activate viruses
Blood clotting
13.
Pure water reaches its maximum density (1.000 g/cm3 or 1000 kg/m3) at a temperature of:
-4.0 °C
25.0 °C
4.0 °C
0.0 °C
14.
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:
12.0 atm
7.5 atm
1.2 atm
6.0 atm
15.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
Ovaries before ovulation
Uterine cavity
Graaf's vesicle
The fallopian tube when the sperm enters the head for fertilization to occur
16.
Antidiuretic hormone (ADH/vasopressin) works to raise blood pressure by:
Expansion of the arteries
Sodium excretion in urine
Stimulate sweat
Smooth blood vessel constriction and water reabsorption in nephrons
17.
Real gases behave most closely to an ideal gas under conditions of:
High pressure and near liquefaction point
Extremely high pressure and low temperature
Very low pressure and high temperature (where intermolecular attraction forces and molecular volumes become negligible)
Zero gravitational acceleration
18.
Common and economically beneficial chromosome duplication in the plant kingdom (such as strawberries, wheat, and apples) leads to:
Root loss
Larger cells and tissues and larger, sweeter and more productive fruits
Plant sterility and death
Loss of chlorophyll
19.
The location where fertilization of the egg by the sperm occurs in the human female reproductive system is:
Internal uterine cavity
Directly to the ovary
the vagina
First third of the fallopian tube (near the infundibulum)
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:
3 rho
0.67 rho
1.5 rho
6 rho (since rho is proportional to P / T)
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