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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 volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
A hydrometer
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A venturi meter and manometer
A torsion balance
2.
The substance that the plant secretes to close wounds in its woody stems and completely isolate the affected tissue from the air and microbes is:
Gum and cork
Monosaccharides
Ascorbic acid
Liquid auxins
3.
Natural killer (NK) cells attack and kill cancer cells and virus-infected cells by:
Secretion of antibodies
Secretion of specialized digestive enzymes without the need for prior specific antigen recognition
Swallow the cells whole
Histamine secretion
4.
A segment of a DNA double helix consisting of 600 nucleotides. The number of complete turns in this segment is equal to:
30 Full roll
15 roll
10 Rolls
60 roll
5.
Boyle's Law states that for a fixed mass of an ideal gas kept at constant temperature, the volume V is:
Directly proportional to pressure
Independent of pressure changes
Directly proportional to absolute temperature
Inversely proportional to its absolute pressure P (P1 * V1 = P2 * V2)
6.
If a sample of a DNA double helix contains 30% Cytosine (C), the percentage of adenine (A) bases in this sample is equal to:
20%
70%
40%
30%
7.
In eukaryotic cells, rRNA molecules are synthesized and assembled under ribosomal subunits within:
Nucleolus
Golgi apparatus
directly into the cytoplasm
Smooth endoplasmic reticulum
8.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
Two hydrogen bonds
3 Hydrogen bonds
4 Links
One bond
9.
Party 3' For a DNA strand that ends with a group:
Free phosphate (-PO4)
Free carboxylate (-COOH)
Free amine (-NH2)
Free hydroxyl (-OH)
10.
Substances secreted by T helper cells (Th) and acting as a communication tool to activate neighboring B and T cells are:
Antibodies
Hemoglobin
Myoglobin
Interleukins
11.
DNA Repair Enzymes, which number approximately 20 enzymes, depend for their work on:
Production of lipoproteins
Heat irradiation of the cell
The presence of a corresponding healthy template strip complementary to the damaged strip to guide its sequence in repair
Destruction of the infected cell
12.
The volume expansion coefficient at constant pressure (alpha_v) and the pressure expansion coefficient at constant volume (beta_p) for all ideal gases have the universal constant value of:
1 / 273.15 K−1 (approx. 0.00366 K−1)
8.314 J/(mol.K)
273.15 K
1.013 x 105 Pa
13.
Charles's Law establishes that at constant pressure, the volume of a given mass of gas is directly proportional to its:
Celsius temperature only
Absolute temperature in Kelvin (T_K = t_C + 273.15)
Atmospheric density
Square of the absolute temperature
14.
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)
15.
The nitrogen molecule (N2) contains a:
Double covalent bond
Coordinate dative bond
Triple covalent bond (one sigma bond and two pi bonds) sharing 3 electron pairs
Single ionic bond
16.
If a double-stranded DNA sample contains 28% Adenine, what is the exact percentage of Cytosine in this sample?
22%
56%
44%
28%
17.
Modifying enzymes produced by bacteria work to:
Cell wall construction
Cracking viruses
Adding methyl groups (-CH3) to the nucleotides of recognition sites in bacterial DNA to protect it from their shortening enzymes.
Sugar analysis
18.
The lymphatic organ, which is called the graveyard of old and worn-out red blood cells and contains large numbers of macrophages, is:
Thymus gland
Tonsils
appendix
Spleen
19.
The enzymes secreted by the plant to break down bacterial toxins and convert them into non-toxic compounds are:
Detoxifying enzymes
pepsin enzymes
RNA polymerase enzymes
Palace enzymes
20.
The gland that secretes both external ductal secretion and non-ductal hormonal secretion directly into the blood is:
Pancreas (common/mixed gland)
pituitary gland
Thyroid gland
Adrenal gland
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