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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 2 Quiz: Adrenal Glands, The Pancreas and Reproductive Gonads

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  • Questions count: 6
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1.
The common ratio r of the geometric sequence (64, 32, 16, 8, ...) is:
r = 1/2
r = -1/2
r = 2
r = 4
2.
The sum to infinity of the geometric series 12 + 6 + 3 + 1.5 + ... equals:
18
Infinity
24
36
3.
The mechanical advantage (eta) of an ideal hydraulic press equals all of the following ratios EXCEPT:
Area of the large piston / Area of the small piston (A / a)
Distance moved by the small piston / Distance moved by the large piston (y1 / y2)
Work done by the large piston / Work done on the small piston > 1
Force on the large piston / Force on the small piston (F / f)
4.
In prokaryotic cells (such as bacteria), a single circular DNA molecule attaches to the plasma membrane at:
One or more sites from which DNA replication begins
Nuclear envelope
Centrosome
Ribosome
5.
The anticodon on the tRNA molecule carrying methionine is:
AUG
UAC
GUA
CAU
6.
Polyribosome is a vital cellular structure consisting of:
A large number of ribosomes (up to 100 ribosomes) attach to a single mRNA molecule to translate it simultaneously and quickly build many copies of the protein.
Accumulated peripheral granules
Fusion of two nuclei
Mitochondrial aggregation
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