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Biology & Geology

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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Quiz

Lesson 1 Quiz: Endocrine Glands, The Pituitary, Thyroid and Parathyroid Glands

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1.
The atomic radii of the elements from Chromium to Copper remain remarkably steady and nearly constant across the first transition series because of:
The identical number of neutrons in their nuclei
Decreasing ionization energies
The mutual compensation between the increasing nuclear charge and the repulsive forces among accumulated 3d electrons
The sudden increase in atomic mass
2.
An aqueous solution of titanium(IV) chloride (TiCl4) is diamagnetic and colorless because:
Chlorine ions quench all magnetic dipoles
The Ti4+ ion has an electronic configuration of [Ar] 3d0, devoid of unpaired d-electrons
It absorbs all visible wavelengths of light
Titanium is an alkali earth metal
3.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
kilns
blenders
looms
fridges
4.
The number of terms in the finite arithmetic sequence (5, 9, 13, ..., 81) is:
19 terms
25 terms
20 terms
21 terms
5.
The 7th term of the geometric sequence (2, 6, 18, ...) is:
486
729
1458
162
6.
A mercury manometer connected to a gas tank shows the mercury level in the free arm is 4 cm higher than the gas arm (Pa = 76 cm Hg). The gas pressure is:
76 cm Hg
80 cm Hg
72 cm Hg
4 cm Hg
7.
The pituitary gland is considered the master of the endocrine glands (the maestro) because:
It secretes stimulating hormones that control the secretions of most other endocrine glands in the body, such as the thyroid, adrenals, and gonads
The largest gland by weight
Secretes digestive enzymes
Connected to the liver
8.
The number of hydrogen bonds between the nitrogenous base pair guanine and cytosine (G - C) is:
Two hydrogen bonds
4 Links
3 Hydrogen bonds
One bond
9.
Party 3' For a DNA strand that ends with a group:
Free hydroxyl (-OH)
Free carboxylate (-COOH)
Free amine (-NH2)
Free phosphate (-PO4)
10.
The thermal multiplex device (PCR - Polymerase Chain Reaction) depends on an enzyme that tolerates high temperatures called:
RNA polymerase enzyme
Taq polymerase enzyme
Human DNA polymerase enzyme
Amylase enzyme
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