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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: Recombinant DNA, Gene Cloning, PCR and Genetic Engineering

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  • Questions count: 20
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1.
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
2.
Electric buses and monorails produce zero exhaust fumes, making them ________ forms of transport.
eco-friendly
polluting
dangerous
noisy
3.
The contraceptive method that prevents the fertilized egg from settling in the uterine lining without hindering the ovulation or fertilization processes is:
IUD
Condom
Surgical ligation of the fallopian tubes
Contraceptive pills
4.
Which of the following immune structures represents the first line of defense in the human body to prevent the entry of pathogens?
Antibodies
Macrophages
Toxic T cells
Intact skin with its stratum corneum, mucus, HCl in the stomach, and saliva saturated with lysozyme
5.
What is the direct physiological effect of injecting a healthy person with an excessive dose of the hormone insulin?
A severe drop in blood glucose levels (hypoglycemia) and hypoglycemic coma
Increased urine secretion
Uric acid accumulation
A sharp increase in blood sugar
6.
The percentage of DNA encoding the construction of proteins and enzymes in the genetic content of eukaryotic cells (such as humans) represents approximately:
100%
Less than 2% Of the total cell genome
More than 90%
50%
7.
Asexual reproduction differs from sexual reproduction in that:
Provides great genetic diversity
Expensive in energy and time
It always requires the formation of gametes
It is based on a single parental individual and maintains genetic stability over generations because it is based on mitosis
8.
Vaccination gives humans immunity:
Innate, inherited
Not specialized
Temporary negativity that disappears within weeks
Acquired long-term positivity for the formation of memory cells
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
Auxin IAA
Gibberellic acid
Ethylene gas
10.
The location where fertilization of the egg by the sperm occurs in the human female reproductive system is:
First third of the fallopian tube (near the infundibulum)
the vagina
Internal uterine cavity
Directly to the ovary
11.
The adrenal medulla is stimulated to secrete the emergency hormones adrenaline and noradrenaline via:
ACTH hormonal stimulation
Rapid and direct sympathetic nervous stimulation in cases of fear, fight, and flight
Body temperature change
High blood sugar
12.
Experiments using genes for resistance to insect pests in crop plants (such as the Bacillus thuringiensis gene) are an application to:
Genetic engineering and development of genetically modified plants resistant to pests without chemical pesticides
Parthenogenetic fruiting
Propagation by hydroponics
Artificial parthenogenesis
13.
Cells that carry CD8 receptors and directly eliminate cancer cells, virus-infected cells, and transplanted organs are:
Cytotoxic T cells
Memory B cells
Helper T cells (Th)
Mast cells
14.
The movement of hydrotropism in plant roots is considered tropism:
Unaffected
randomly
Negatively
Positive (the root bends in the direction of moisture and water concentration)
15.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
The fallopian tube when the sperm enters the head for fertilization to occur
Ovaries before ovulation
Graaf's vesicle
Uterine cavity
16.
Interstitial cells in the human male testicle respond directly and secrete testosterone under the influence of a pituitary hormone:
Prolactin hormone
Growth hormone
Luteinizing hormone (LH)
FSH hormone
17.
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
The environment is exposed to drought, change in water purity, or change in temperature (unsuitable conditions)
Complete darkness
Mild spring
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 salivary glands and sweat glands in the human body are examples of:
Aductal endocrine glands
Steroid tissue
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Common glands
20.
Natural killer (NK) cells attack and kill cancer cells and virus-infected cells by:
Histamine secretion
Swallow the cells whole
Secretion of specialized digestive enzymes without the need for prior specific antigen recognition
Secretion of antibodies
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