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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 1 Quiz: Asexual and Sexual Reproduction and Alternation of Generations

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  • Questions count: 14
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1.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Sodium ion Na+
Potassium ion K+
Chloride ion Cl−
Calcium ion Ca2+
2.
The pituitary gland is considered the master of the endocrine glands (the maestro) because:
It secretes stimulating hormones that control the secretions of most other endocrine glands in the body, such as the thyroid, adrenals, and gonads
Connected to the liver
Secretes digestive enzymes
The largest gland by weight
3.
When examining a patient who suffers from severe weight loss, bulging eyes, rapid heart rate, and high temperature, the doctor diagnoses the condition as:
Exophthalmos caused by excessive secretion of the hormone thyroxine
Diabetic urine
Dwarfism
Myxedema
4.
The salivary glands and sweat glands in the human body are examples of:
Steroid tissue
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Aductal endocrine glands
Common glands
5.
What is the direct physiological effect of injecting a healthy person with an excessive dose of the hormone insulin?
Uric acid accumulation
Increased urine secretion
A severe drop in blood glucose levels (hypoglycemia) and hypoglycemic coma
A sharp increase in blood sugar
6.
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
7.
The lymphatic organ, which is called the graveyard of old and worn-out red blood cells and contains large numbers of macrophages, is:
Tonsils
Thymus gland
Spleen
appendix
8.
Injection with serum (Antiserum) containing ready-made antibodies to neutralize scorpion venom gives the patient immunity:
Lasting positivity
Innate
A rapid and temporary acquired negativity that is not accompanied by memory cells
Cellular induced
9.
Lymphotoxins secreted by cytotoxic T cells (Tc) eliminate the infected cell by:
Immunosuppression
Blood plasma coagulation
Activation of certain genes within the nucleus of the infected cell, which leads to the fragmentation of its genetic material and its programmed death (Apoptosis).
Calcium withdrawal
10.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Merozoites
Gametophytes
Kinetic phase (okinete)
Sporozoites
11.
The infective stage of the female Anopheles mosquito in the life cycle of Plasmodium malaria is:
Sporozoites
Gametocytes
Zygote
Merozoites
12.
The motile phase (motile zygote / ookinete) in the life cycle of Plasmodium malaria is characterized by:
It secretes malaria toxin
It is diploid (2N) and penetrates the mosquito's stomach wall and turns into an egg sac
Haploid group N
It attacks red blood cells
13.
The thermal multiplex device (PCR - Polymerase Chain Reaction) depends on an enzyme that tolerates high temperatures called:
Amylase enzyme
RNA polymerase enzyme
Taq polymerase enzyme
Human DNA polymerase enzyme
14.
The two sites on the subunit of the ribosomal subunit where the two tRNA molecules stabilize during polypeptide chain elongation are:
The location of the palace and the location of the IUD
Location 5' And site 3'
Peptidyl site (P) and aminoacyl site (A)
Coiling site and binding site
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