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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.
Which of the following conditions leads to increased secretion of parathormone from the parathyroid glands?
Excessive vitamin D excess
Low phosphate
Low level of ionized calcium in blood plasma
High blood calcium level
2.
Plant hormones are responsible for the phenomenon of leaf fall and fruit ripening and falling. Where the role of a hormonal gas increases:
Auxin IAA
Ethylene gas
Abscisic acid
Gibberellic acid
3.
Plant hypersensitivity is an effective immunological method that includes:
The plant kills some of its infected tissues and cells locally to prevent the spread of the microbe to healthy tissues
Root loss
Stomata open at night
Secreting nectar to attract bees
4.
In the life cycle of the fougere plant (a fern), the haploid (N) gametophyte produces its male and female gametes by:
Direct meiosis
Regeneration
Mitosis within antheridia and archegonia
Surface budding
5.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
Prostate gland
Tomorrow Cooper
Epididymis
The seminal vesicles
6.
The Ancon breed mutation in sheep with short, arched legs is considered a mutation:
A useful mechanism that the breeder kept in mind to prevent sheep from jumping fences and damaging crops
Fatal to fetuses
Numerical chromosome
Harmful innovation
7.
Experiments using genes for resistance to insect pests in crop plants (such as the Bacillus thuringiensis gene) are an application to:
Propagation by hydroponics
Artificial parthenogenesis
Genetic engineering and development of genetically modified plants resistant to pests without chemical pesticides
Parthenogenetic fruiting
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