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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: 15
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1.
In a titration experiment, 20.0 mL of 0.15 M H2SO4 is completely neutralized by 30.0 mL of NaOH solution. The molar concentration of the NaOH solution is:
0.20 M
0.30 M
0.05 M
0.10 M
2.
The sum to infinity (S_infinity) of a geometric series exists and converges if and only if the common ratio satisfies:
|r| < 1 (i.e. -1 < r < 1), and S_infinity = a / (1 - r)
r = 1
r > 1
|r| >= 2
3.
If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:
-5
7
12
1
4.
According to the Chain Rule, if y = (3 x2 - 5)4, then dy/dx is:
24 x (3 x2 - 5)3
6 x (3 x2 - 5)3
12 x (3 x2 - 5)4
4 (3 x2 - 5)3
5.
If y = sin(3x) + cos(2x), then dy/dx at x = 0 equals:
5
-2
3
1
6.
A diver descends to a depth of 30 meters in seawater (density = 1030 kg/m3). If atmospheric pressure is 1.013 x 105 Pa and g = 9.8 m/s2, the total absolute pressure experienced by the diver is approximately:
3.03 x 105 Pa
6.06 x 105 Pa
1.01 x 105 Pa
4.04 x 105 Pa (approx. 4.0 atmospheres)
7.
Pure water reaches its maximum density (1.000 g/cm3 or 1000 kg/m3) at a temperature of:
0.0 °C
25.0 °C
4.0 °C
-4.0 °C
8.
The pulling movement occurs in bulbs and corms (such as carcasses and daffodils) with the aim of:
Pull the stored ground leg down to an appropriate level from the soil surface to secure and support it against the wind
Light absorption for photosynthesis
Getting rid of carbon dioxide
Repel terrestrial insects
9.
The two hormones that are secreted from the mucous membrane of the small intestine to stimulate the pancreas to secrete its digestive juices are:
Insulin and glucagon
Prolactin and oxytocin
Thyroxine and calcitonin
Secretin and cholecystokinin (Secretin & CCK)
10.
Peyer's spots's Patches) Tiny lymph nodes spread in the mucous membrane lining the:
Lower part of the small intestine (ileum)
esophagus
Stomach
Pharynx
11.
Reproduction by peaceful association in two adjacent threads of the spirogyra moss (Rem al-Barak) occurs in the case of:
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
Complete darkness
Mild spring
Abundance of pure fresh water
12.
The decisive experiment for Hershey and Chase (Hershey & Chase) To prove that DNA is the genetic material of bacteriophages, I relied on:
Use of deoxyribonuclease enzyme to analyze protein
Isolation of bacterial plasmids
Radioactive nitrogen and carbon numbering
Radioactive phosphorus numbering P-32 in DNA and radioactive sulfur numbering S-35 in the protein envelope
13.
In Griffith's bacterial transformation experiment, mice died when they were injected with:
Live R bacteria alone
Heat-killed S bacteria alone
Sterile saline solution
A mixture of heat-killed S bacteria with live R bacteria
14.
The standard start codon in an mRNA molecule recognized by the first tRNA molecule carrying methionine is:
UAA
UGA
AUG
UAG
15.
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
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