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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: Plant Immunity (Structural and Biochemical Defense)

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  • Questions count: 20
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1.
What is the structural characteristic of a restriction endonuclease recognition site?
It contains only adenine and thymine bases.
It always begins with the start codon AUG.
It consists of 15-20 repetitive nucleotides.
It is a palindromic sequence reading identical 5' to 3' on both strands.
2.
Antidiuretic hormone (ADH/vasopressin) works to raise blood pressure by:
Expansion of the arteries
Stimulate sweat
Smooth blood vessel constriction and water reabsorption in nephrons
Sodium excretion in urine
3.
The reaction between an acid and a base to produce a salt and water is known as a:
Combustion reaction
Polymerization reaction
Neutralization reaction
Thermal decomposition reaction
4.
Double fertilization in flowering plants involves two fusions:
The fusion of two pollen grains with one egg
Chromosome duplication in Takht cells
The fusion of the zygote nucleus (N) with the egg nucleus (N) to form the zygote (2N), and the fusion of the second nuclei (N) with the two polar nuclei (2N) to form the sperm nucleus.Dosperm (3N)
Fusion of petals with sepals
5.
If a, b, c form an arithmetic sequence, then the arithmetic mean b equals:
b = (a + c) / 2
b = a + c
b = 2 a c / (a + c)
b = sqrt(a * c)
6.
The major histocompatibility complex (MHC) protein associates within the macrophage cell with:
Secreted antibodies
Perforin protein
Histamine molecules
Microbe antigen after being broken down by lysosomal enzymes to be displayed on the external surface
7.
The Cairo Monorail travels on an elevated single-beam track to avoid urban traffic ________.
comfort
gardens
stations
congestion
8.
The gland that secretes both external ductal secretion and non-ductal hormonal secretion directly into the blood is:
Pancreas (common/mixed gland)
Thyroid gland
Adrenal gland
pituitary gland
9.
Lymphotoxins secreted by cytotoxic T cells (Tc) eliminate the infected cell by:
Calcium withdrawal
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).
Blood plasma coagulation
Immunosuppression
10.
The 7th term of the geometric sequence (2, 6, 18, ...) is:
1458
162
486
729
11.
The salivary glands and sweat glands in the human body are examples of:
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Aductal endocrine glands
Common glands
Steroid tissue
12.
The Cowper glands and the prostate gland in the male reproductive system secrete an alkaline fluid that passes into the urethra to:
Balancing the acidity of the urethra to ensure the passage and safety of sperm
Secretion of testosterone
Semen storage
Sperm production
13.
Which of the following oxides is amphoteric?
ZnO
SO3
MgO
Na2O
14.
In the human female, the second (delayed/conditional) meiotic division of the secondary oocyte takes place in:
Uterine cavity
The fallopian tube when the sperm enters the head for fertilization to occur
Ovaries before ovulation
Graaf's vesicle
15.
If (x - 1, x + 2, 3x) form a geometric sequence, the positive value of x is:
4
6
2
3
16.
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 allow fish to swim upstream through drainage gates
Because hydrostatic water pressure increases linearly with depth (P = rho * g * h), exerting immense overturning forces at the bottom
To prevent solar radiation from penetrating the foundation
17.
The direct cause of myxedema in an adult is:
Severe deficiency in thyroxine secretion in adulthood
Insulin deficiency
Excessive increase in growth hormone
Hyperactivity of the parathyroid gland
18.
The Ancon breed mutation in sheep with short, arched legs is considered a mutation:
Fatal to fetuses
A useful mechanism that the breeder kept in mind to prevent sheep from jumping fences and damaging crops
Harmful innovation
Numerical chromosome
19.
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:
160 grain
80 grain
640 grain
320 Pollen pill
20.
The enzyme used in the crucial experiment to verify the experiments of Avery and his colleagues, which completely analyzes DNA and does not affect protein or RNA, is:
Ribonuclease enzyme
DNA polymerase enzyme
pepsin enzyme
Deoxyribonuclease enzyme
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