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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: Endocrine Glands, The Pituitary, Thyroid and Parathyroid Glands

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  • Questions count: 10
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1.
Which hormone acts to decrease blood calcium levels when they rise above normal physiological limits?
Parathormone
Thyroxine
Aldosterone
Calcitonin
2.
When dry chlorine gas is passed over red-hot iron filings, iron(III) chloride (FeCl3) is exclusively formed rather than iron(II) chloride because:
Iron(II) chloride spontaneously sublimes into thin air
The reaction occurs strictly in an alkaline medium
Chlorine cannot react with the inner 3d electrons
Chlorine gas is a powerful oxidizing agent that readily oxidizes any formed Fe2+ to Fe3+
3.
We visited the pottery village in Fustat ________ our holiday in Cairo.
when
as
during
while
4.
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)
5.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
19,682
29,524
118,096
59,048
6.
The sum to infinity of the geometric series 16 + 8 + 4 + 2 + ... equals:
30
64
32
24
7.
Which of the following conditions leads to increased secretion of parathormone from the parathyroid glands?
High blood calcium level
Low phosphate
Excessive vitamin D excess
Low level of ionized calcium in blood plasma
8.
The infective stage of the female Anopheles mosquito in the life cycle of Plasmodium malaria is:
Gametocytes
Merozoites
Zygote
Sporozoites
9.
A synthetic chromosome mutation that occurs when a piece of chromosome separates, wraps around itself at an angle of 180 degrees, and then rejoins in the same position is called:
Inversion mutation
Repetition mutation
Deletion mutation
Transmission mutation
10.
The anticodon on the tRNA molecule carrying methionine is:
UAC
GUA
CAU
AUG
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