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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: 20
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1.
The apple is considered a false fruit from a morphological and anatomical perspective because:
The edible, fatty part that is lubricated by food is the takht, not the ovary of the flower
Produced from a hermaphrodite flower
The cup leaves become greasy
It is made without seeds
2.
Telomeres are found at the ends of eukaryotic chromosomes and perform an important function in:
Synthesis of enzymes
Centromere doubling
Construction of ribosomes
Protecting chromosomes from corrosion and merging with each other and maintaining their structure
3.
Substances secreted by T helper cells (Th) and acting as a communication tool to activate neighboring B and T cells are:
Interleukins
Antibodies
Hemoglobin
Myoglobin
4.
In a hydraulic press, if the radius of the large piston is 4 times that of the small piston, the mechanical advantage is:
8
16
2
4
5.
Experiments using genes for resistance to insect pests in crop plants (such as the Bacillus thuringiensis gene) are an application to:
Propagation by hydroponics
Parthenogenetic fruiting
Genetic engineering and development of genetically modified plants resistant to pests without chemical pesticides
Artificial parthenogenesis
6.
A person who skillfully makes beautiful objects by hand is called a/an ________.
engineer
scientist
pilot
artisan
7.
The infective stage of the female Anopheles mosquito in the life cycle of Plasmodium malaria is:
Sporozoites
Gametocytes
Zygote
Merozoites
8.
Concentrated nitric acid (HNO3) induces chemical passivity on the surface of iron metal due to:
The instantaneous dissolution of iron into gaseous ions
The formation of an extremely thin, non-porous protective oxide film that halts further reaction
Complete neutralization of the acid
The precipitation of elemental sulfur on the surface
9.
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%
100%
Less than 2% Of the total cell genome
50%
10.
The slope of the tangent to the curve y = (x + 1)/(x - 1) at x = 2 is:
-1
3
2
-2
11.
The Ideal Gas Law combining all empirical gas relationships is mathematically formulated as:
P / V = n * R * T
P * T = n * R * V
P * V = m * g * h
P * V = n * R * T
12.
Vaccination gives humans immunity:
Temporary negativity that disappears within weeks
Not specialized
Innate, inherited
Acquired long-term positivity for the formation of memory cells
13.
The cells that suppress and inhibit the immune response after eliminating the microbe and secrete lymphokine proteins are:
Helper T cells (Th)
Neutrophil cells
Suppressor T cells
Plasma cells
14.
Electric buses and monorails produce zero exhaust fumes, making them ________ forms of transport.
eco-friendly
noisy
dangerous
polluting
15.
The genetic code is characterized as universal because:
It consists of only two letters
The same codons code for the same amino acids in all organisms from bacteria to humans, confirming the common origin of life
It does not change with mutations
It is found in the nucleus only
16.
The enzyme found in the apical body (Acrosome) of the sperm that helps it penetrate the compact envelope of the egg is:
pepsin enzyme
Amylase enzyme
Hyaluronidase enzyme
Cholinesterase enzyme
17.
Phenolphthalein indicator cannot distinguish between an acidic solution and a neutral solution because:
It is red in both
It is blue in both
It is colorless in both
It precipitates in both
18.
Common and economically beneficial chromosome duplication in the plant kingdom (such as strawberries, wheat, and apples) leads to:
Larger cells and tissues and larger, sweeter and more productive fruits
Root loss
Loss of chlorophyll
Plant sterility and death
19.
Combined contraceptive pills are considered an effective method because they:
It contains synthetic hormones similar to estrogen and progesterone that inhibit the secretion of FSH and LH from the pituitary, thus preventing the maturation of eggs and the occurrence of ovulation.
The fallopian tubes close mechanically
It kills sperm
Placental abruption
20.
The Cowper glands and the prostate gland in the male reproductive system secrete an alkaline fluid that passes into the urethra to:
Sperm production
Semen storage
Secretion of testosterone
Balancing the acidity of the urethra to ensure the passage and safety of sperm
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