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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: Types of RNA, Genetic Code and Protein Translation

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  • Questions count: 20
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1.
What is the structural characteristic of a restriction endonuclease recognition site?
It consists of 15-20 repetitive nucleotides.
It contains only adenine and thymine bases.
It is a palindromic sequence reading identical 5' to 3' on both strands.
It always begins with the start codon AUG.
2.
The hormone that is secreted from the stomach lining and travels through the blood to return to the same stomach, stimulating it to secrete its digestive gastric juices, is:
Secretin hormone
Pepsin hormone
Gastrin hormone
Cholecystokinin hormone
3.
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:
Cortisol hormone
Thyroxine hormone
Insulin hormone
Aldosterone
4.
Real gases behave most closely to an ideal gas under conditions of:
Very low pressure and high temperature (where intermolecular attraction forces and molecular volumes become negligible)
Zero gravitational acceleration
High pressure and near liquefaction point
Extremely high pressure and low temperature
5.
The lymphocytes responsible for secreting specific antibodies in humoral immunity are:
Plasma B cells
Macrophages
Natural killer (NK) cells
Helper T cells (TH)
6.
Plant hormones are responsible for the phenomenon of leaf fall and fruit ripening and falling. Where the role of a hormonal gas increases:
Gibberellic acid
Abscisic acid
Ethylene gas
Auxin IAA
7.
The cells that secrete the hormones oxytocin and ADH and store them in the posterior lobe of the pituitary gland are:
Apocrine neurons in the hypothalamus (hypothalamus)
Glial cells
Frontal lobe glandular cells
Pineal gland cells
8.
A mercury manometer connected to a gas tank shows the mercury level in the free arm is 4 cm higher than the gas arm (Pa = 76 cm Hg). The gas pressure is:
4 cm Hg
72 cm Hg
80 cm Hg
76 cm Hg
9.
Injection with serum (Antiserum) containing ready-made antibodies to neutralize scorpion venom gives the patient immunity:
A rapid and temporary acquired negativity that is not accompanied by memory cells
Innate
Cellular induced
Lasting positivity
10.
Sticky Ends resulting from the action of shortening enzymes are characterized by:
Short, extended single strands of unpaired nucleotides capable of spontaneous association with complementary ends
Collagen thickened ends
Inactive phosphate sequences
Ends surrounded by peptide bonds
11.
Which of the following hormones is considered a steroid hormone (derived from fat and cholesterol)?
Growth hormone (GH)
Thyroxine
Progesterone and testosterone
Insulin
12.
Interstitial cells in the human male testicle respond directly and secrete testosterone under the influence of a pituitary hormone:
FSH hormone
Luteinizing hormone (LH)
Growth hormone
Prolactin hormone
13.
The substance that the plant secretes to close wounds in its woody stems and completely isolate the affected tissue from the air and microbes is:
Gum and cork
Ascorbic acid
Monosaccharides
Liquid auxins
14.
What is the direct physiological effect of injecting a healthy person with an excessive dose of the hormone insulin?
A sharp increase in blood sugar
A severe drop in blood glucose levels (hypoglycemia) and hypoglycemic coma
Increased urine secretion
Uric acid accumulation
15.
In the secondary immune response upon exposure to the microbe for the second time, the response is characterized as:
Rely only on the first line of defense
Slow and takes days
It is very rapid and produces huge amounts of antibodies thanks to memory cells, and the individual does not show symptoms of the disease
Limited to non-specialized immunity
16.
The contraceptive method that prevents the fertilized egg from settling in the uterine lining without hindering the ovulation or fertilization processes is:
Surgical ligation of the fallopian tubes
IUD
Contraceptive pills
Condom
17.
The antibody that is transferred across the placenta from the blood of the pregnant mother to the blood of the fetus to give it natural, passive, acquired immunity is:
IgM
IgG
IgD
IgE
18.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Potassium ion K+
Sodium ion Na+
Calcium ion Ca2+
Chloride ion Cl−
19.
The two hormones that are secreted from the mucous membrane of the small intestine to stimulate the pancreas to secrete its digestive juices are:
Insulin and glucagon
Thyroxine and calcitonin
Prolactin and oxytocin
Secretin and cholecystokinin (Secretin & CCK)
20.
The hormone that is secreted from the corpus luteum and reaches its maximum concentration on days 21 to 23 of menstruation is:
Estrogen
LH hormone
Progesterone
FSH hormone
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