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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: Support in Plants and the Human Skeletal System

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1.
What is the biochemical cause of continuous, non-relaxing muscle spasm that can cause muscular tearing?
Abrupt accumulation of excessive calcium ions in the synaptic cleft.
Complete depletion of cellular ATP molecules, preventing cross-bridge detachment.
Excessive breakdown of acetylcholine by the enzyme acetylcholinesterase.
Sudden accumulation of glucose inside glycogen granules.
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| >= 2
r > 1
3.
What is the correct descending order of skeletal muscle structure from largest to smallest?
Sarcomere → Fibrous → Loofah → muscle
Skeletal muscle → muscle bundle → myofibril (cell) → Myofibril → Protein filaments (myosin and actin)
muscle bundle → muscle → Fibrous → Loofah
Loofah → pack → Fibrous → Sarcomere
4.
A hormone secreted from the anterior lobe of the pituitary gland that stimulates the growth of Graafian follicles in the female ovary and the production of sperm in the male testicle is:
follicle stimulating hormone (FSH)
Prolactin hormone
ACTH hormone
Luteinizing hormone (LH)
5.
When severe dehydration and decreased blood volume and body fluids occur, which of the following hormonal changes occur?
The secretion of ADH and aldosterone increases to restore water and salts
Thyroxine secretion stops
Calcitonin secretion increases
ADH decreases and insulin increases
6.
The Cowper glands and the prostate gland in the male reproductive system secrete an alkaline fluid that passes into the urethra to:
Balancing the acidity of the urethra to ensure the passage and safety of sperm
Sperm production
Secretion of testosterone
Semen storage
7.
Hydra and planaria share the ability to reproduce asexually by:
Regeneration
Bacteria formation
Longitudinal binary fission
Budding only
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