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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 1 Quiz: Structure of Earth, Geological Time and Structural Geology

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  • Questions count: 18
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1.
Which of the following alloys is classified as an interstitial alloy?
Stainless steel (Iron, Chromium, and Nickel)
Brass (Copper and Zinc)
Carbon steel (Iron and Carbon where small carbon atoms occupy interstitial voids)
Duralumin (Aluminum and Copper)
2.
A metal cation that forms a gelatinous white precipitate with NaOH which completely redissolves in excess reagent to form a soluble clear solution is:
Fe3+
Ca2+
Fe2+
Al3+ (due to the formation of soluble sodium meta-aluminate NaAlO2)
3.
The sum of the first n terms of an arithmetic sequence (S_n) is formulated as:
S_n = a * (1 - rn) / (1 - r)
S_n = n / 2 * [ 2a + (n - 1) * d ] = n / 2 * [ a + l ]
S_n = a / (1 - r)
S_n = n * (a + d)
4.
If a, b, c form an arithmetic sequence, then the arithmetic mean b equals:
b = (a + c) / 2
b = sqrt(a * c)
b = 2 a c / (a + c)
b = a + c
5.
If a, b, c form a geometric sequence of positive real numbers, the geometric mean b equals:
b = (a + c) / 2
b = + sqrt(a * c)
b = a2 + c2
b = a * c
6.
The number of terms in the finite arithmetic sequence (5, 9, 13, ..., 81) is:
19 terms
20 terms
25 terms
21 terms
7.
If (x - 1, x + 2, 3x) form a geometric sequence, the positive value of x is:
4
6
3
2
8.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
HCl
NaCl
NH4OH
CH3COOH
9.
Which of the following oxides is amphoteric?
ZnO
Na2O
MgO
SO3
10.
Which of the following hormones is considered a steroid hormone (derived from fat and cholesterol)?
Insulin
Progesterone and testosterone
Thyroxine
Growth hormone (GH)
11.
Immunoglobulin (antibody), which exists as a pentamer and contains 10 sites to bind to the antigen is:
IgA
IgE
IgG
IgM
12.
In the secondary immune response upon exposure to the microbe for the second time, the response is characterized as:
Slow and takes days
Limited to non-specialized immunity
Rely only on the first line of defense
It is very rapid and produces huge amounts of antibodies thanks to memory cells, and the individual does not show symptoms of the disease
13.
Which of the following immune structures represents the first line of defense in the human body to prevent the entry of pathogens?
Antibodies
Macrophages
Toxic T cells
Intact skin with its stratum corneum, mucus, HCl in the stomach, and saliva saturated with lysozyme
14.
Sertoli cells in the seminiferous tubules of the human male testicle play a functional role in:
The secretion of a fluid that nourishes sperm inside the testicle and is thought to have an immunological function
Meiosis to produce precursors
Secretion of testosterone
Excretion of fructose
15.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
Epididymis
The seminal vesicles
Prostate gland
Tomorrow Cooper
16.
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
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
Continued growth of the uterine lining
17.
The two main functional sites on the tRNA molecule are:
The amino acid binding site is at the 3′ end' (sequence CCA), and anticodon site
DNA polymerase site and binding site
Phosphate site and sugar site
Start location and stop location
18.
In gene cloning technology, a ligase is used to:
Breaking down proteins
mRNA transcription
Cut the plasmid
Linking the integrated sticky ends of a target gene to the sticky ends of a circular plasmid
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