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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 3 Quiz: The Human Reproductive System and Gametogenesis

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  • Questions count: 20
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1.
The movement of tension in the tendrils of climbing plants such as peas and grapes depends physiologically on:
Slow growth of the area in contact with the support and rapid growth of the area far from it as a result of the varying distribution of auxins
Water loss through rapid transpiration
Secretion of gluey substances
Degeneration of tendril cells
2.
The pulling movement occurs in bulbs and corms (such as carcasses and daffodils) with the aim of:
Light absorption for photosynthesis
Getting rid of carbon dioxide
Repel terrestrial insects
Pull the stored ground leg down to an appropriate level from the soil surface to secure and support it against the wind
3.
The maximum number of pollen grains that can be produced from the anther of a flower containing 4 sacs, each sac with 20 germinal cells (2N) is:
320 Pollen pill
640 grain
80 grain
160 grain
4.
Rotational cytoplasmic movement inside living plant cells (such as Elodea plants) is indicated by:
Mitochondrial division
Stomata open
Movement of chloroplasts immersed in the cytoplasm stream in a constant rotational direction
Change in cell wall thickness
5.
Sertoli cells in the seminiferous tubules of the human male testicle play a functional role in:
Meiosis to produce precursors
Secretion of testosterone
The secretion of a fluid that nourishes sperm inside the testicle and is thought to have an immunological function
Excretion of fructose
6.
Which of the following conditions leads to increased secretion of parathormone from the parathyroid glands?
Low level of ionized calcium in blood plasma
Excessive vitamin D excess
High blood calcium level
Low phosphate
7.
The enzymes secreted by the plant to break down bacterial toxins and convert them into non-toxic compounds are:
Palace enzymes
Detoxifying enzymes
pepsin enzymes
RNA polymerase enzymes
8.
Bacterial restriction endonucleases recognize specific nucleotide sequences called recognition sites, and are characterized by:
Lipoprotein molecules
Palindromes of 4 to 8 pairs read in the same order on both strands in 5′ direction.' to 3'
Asymmetric repetitive sequences
Stop codons only
9.
Plant hormones are responsible for the phenomenon of leaf fall and fruit ripening and falling. Where the role of a hormonal gas increases:
Abscisic acid
Gibberellic acid
Auxin IAA
Ethylene gas
10.
Which of the following hormones is secreted by the pituitary gland and indirectly affects basic metabolic processes and the speed of oxygen consumption?
ADH hormone
The hormone oxytocin
Thyroid stimulating hormone (TSH).
Insulin hormone
11.
Why are hydroelectric storage dams constructed with a base that is significantly thicker than the crest?
To reduce the gravitational pull of the bedrock
To prevent solar radiation from penetrating the foundation
Because hydrostatic water pressure increases linearly with depth (P = rho * g * h), exerting immense overturning forces at the bottom
To allow fish to swim upstream through drainage gates
12.
The enzyme responsible for separating the two strands of DNA from each other by breaking hydrogen bonds during replication is:
Ligase
Palace enzyme
Helicase enzyme
DNA polymerase
13.
The percentage of DNA encoding the construction of proteins and enzymes in the genetic content of eukaryotic cells (such as humans) represents approximately:
More than 90%
Less than 2% Of the total cell genome
100%
50%
14.
The gland that secretes both external ductal secretion and non-ductal hormonal secretion directly into the blood is:
pituitary gland
Thyroid gland
Adrenal gland
Pancreas (common/mixed gland)
15.
An ionic bond is formed primarily between:
A metal atom that loses electrons forming a cation and a non-metal atom that gains electrons forming an anion due to electrostatic attraction
Positive metal ions immersed in a sea of delocalized electrons
Two non-metal atoms sharing pairs of valence electrons equally
Noble gas atoms at very low temperatures
16.
Mutations that are inherited to future generations and occur in reproductive cells that produce gametes are called:
Gamete mutations
Temporary spikes
Rebound mutations
Somatic mutations
17.
Absolute zero temperature (0 Kelvin or -273.15 °C) is defined physically as the theoretical temperature at which:
All liquids solidify into glass
The volume and pressure of an ideal gas theoretically extrapolate to zero and translational molecular motion reaches its quantum minimum
Atmospheric air completely combusts
Water reaches its maximum density
18.
The Cowper glands and the prostate gland in the male reproductive system secrete an alkaline fluid that passes into the urethra to:
Sperm production
Secretion of testosterone
Semen storage
Balancing the acidity of the urethra to ensure the passage and safety of sperm
19.
The hormone responsible for maintaining the balance of minerals in the blood by stimulating the reabsorption of sodium ions and eliminating excess potassium through the kidneys is:
Insulin hormone
Cortisol hormone
Aldosterone
Thyroxine hormone
20.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
HCl
NaCl
NH4OH
CH3COOH
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