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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 3 Quiz: The Human Reproductive System and Gametogenesis

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  • Questions count: 20
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1.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
One bond
4 Links
3 Hydrogen bonds
Two hydrogen bonds
2.
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
3.
The sum to infinity of the geometric series 16 + 8 + 4 + 2 + ... equals:
30
64
32
24
4.
The Ideal Gas Law combining all empirical gas relationships is mathematically formulated as:
P / V = n * R * T
P * T = n * R * V
P * V = m * g * h
P * V = n * R * T
5.
The common ratio r of the geometric sequence (64, 32, 16, 8, ...) is:
r = 2
r = -1/2
r = 4
r = 1/2
6.
If a, b, c form a geometric sequence of positive real numbers, the geometric mean b equals:
b = (a + c) / 2
b = a2 + c2
b = + sqrt(a * c)
b = a * c
7.
DNA hybridization depends on the ability of single strands from different sources to combine if:
They contain complementary sequences of nitrogenous bases and are linked by hydrogen bonds
Made in the same cell
They are just the same height and weight
Treatment with shortening enzyme
8.
The covalent chemical bond that connects the heavy and light peptide chains in an antibody molecule is:
Weak hydrogen bonds
Disulfide Bonds - S-S
Ionic bonds
Additional peptide bonds
9.
The n-th term of an arithmetic sequence with first term a and common difference d is given by:
T_n = a + (n - 1) * d
T_n = a + n * d
T_n = 1/2 n (2a + d)
T_n = a * rn − 1
10.
In the arithmetic sequence (3, 7, 11, 15, ...), the common difference d and the 20th term (T_20) are respectively:
d = 4 and T_20 = 83
d = 5 and T_20 = 98
d = 3 and T_20 = 60
d = 4 and T_20 = 79
11.
Real gases behave most closely to an ideal gas under conditions of:
Extremely high pressure and low temperature
High pressure and near liquefaction point
Zero gravitational acceleration
Very low pressure and high temperature (where intermolecular attraction forces and molecular volumes become negligible)
12.
If f(x) = |x - 3|, the derivative f'(3) at x = 3:
Equals 0
Equals 1
Equals -1
Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)
13.
The Cairo Monorail travels on an elevated single-beam track to avoid urban traffic ________.
stations
comfort
congestion
gardens
14.
A chemical substance used in the laboratory to cause mutations and chromosome duplication in the growing tips of plants is:
Colchicine, mustard gas, or nitrous acid
Hyaluronic acid
Sucrose solution
Glycerin
15.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Merozoites
Kinetic phase (okinete)
Gametophytes
Sporozoites
16.
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:
300 Acid
101 Acid
100 Amino acid
99 Acid
17.
The phenomenon of natural parthenogenesis in honey bees results in:
Fertile queens (2N)
Diploid males
Female workers only
Bees are always male, and their somatic cells are haploid (1N) resulting from an unfertilized egg that grows mitotically.
18.
The number of codons that code for the 20 amino acids in the genetic table is equal to:
61 Codons (out of a total of 64 codons after excluding the three stop codons)
20 Codona
32 Codona
64 Codona
19.
The derivative of f(x) = 4 x3 - 5 x2 + 7 x - 9 with respect to x is:
f'(x) = 4 x2 - 5 x + 7
f'(x) = 12 x2 - 10 x
f'(x) = 12 x2 - 10 x + 7
f'(x) = 12 x3 - 10 x2 + 7
20.
Identical (monozygotic) twins arise genetically as a result of:
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 one egg by two sperm
Artificial parthenogenesis
Fertilization of two eggs by two different sperm
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