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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: DNA Structure, Replication and DNA Repair Enzymes

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1.
Reproduction by peaceful association in two adjacent threads of the spirogyra moss (Rem al-Barak) occurs in the case of:
Abundance of pure fresh water
Complete darkness
Mild spring
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
2.
The Cowper glands and the prostate gland in the male reproductive system secrete an alkaline fluid that passes into the urethra to:
Sperm production
Semen storage
Balancing the acidity of the urethra to ensure the passage and safety of sperm
Secretion of testosterone
3.
Asexual reproduction differs from sexual reproduction in that:
Expensive in energy and time
It is based on a single parental individual and maintains genetic stability over generations because it is based on mitosis
Provides great genetic diversity
It always requires the formation of gametes
4.
Hydra and planaria share the ability to reproduce asexually by:
Regeneration
Bacteria formation
Longitudinal binary fission
Budding only
5.
Mutations that are inherited to future generations and occur in reproductive cells that produce gametes are called:
Gamete mutations
Rebound mutations
Somatic mutations
Temporary spikes
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