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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.
Boyle's Law states that for a fixed mass of an ideal gas kept at constant temperature, the volume V is:
Directly proportional to pressure
Independent of pressure changes
Inversely proportional to its absolute pressure P (P1 * V1 = P2 * V2)
Directly proportional to absolute temperature
2.
Auxins in plants (such as indole acetic acid (IAA)) are chemicals secreted from:
Dead wood cells
Cork cells
The growing tops and live plant buds are active and move to the response areas
Pollen granules only
3.
Why is the genetic code described as 'degenerate' or 'redundant'?
One codon can code for multiple different amino acids.
The genetic code differs completely between bacteria and humans.
The genetic code decays as the cell ages.
Multiple different codons can code for the same single amino acid.
4.
The stop codons that signal termination of translation on an mRNA molecule include:
AUG, UAA, UGA
UAC, UGG, UAA
UAA, UAG, UGA
GUA, CAU, UAG
5.
A diver descends to a depth of 30 meters in seawater (density = 1030 kg/m3). If atmospheric pressure is 1.013 x 105 Pa and g = 9.8 m/s2, the total absolute pressure experienced by the diver is approximately:
4.04 x 105 Pa (approx. 4.0 atmospheres)
6.06 x 105 Pa
1.01 x 105 Pa
3.03 x 105 Pa
6.
The genetic code is characterized as universal because:
It is found in the nucleus only
It does not change with mutations
The same codons code for the same amino acids in all organisms from bacteria to humans, confirming the common origin of life
It consists of only two letters
7.
The method of action of antibodies that is considered the most appropriate and most efficient in inactivating viruses and preventing their penetration into cells is:
Deposition method
Decomposition method
Neutralization method
Alignment method
8.
Cultivation of plant tissues in a semi-natural nutrient medium (such as coconut milk) is scientific proof of:
Effect of thyroxine
The necessity of double fertilization
A complete living plant cell contains all the genetic information necessary to form a new complete plant
Seeds are asexual
9.
In the life cycle of the fougere plant (a fern), the haploid (N) gametophyte produces its male and female gametes by:
Mitosis within antheridia and archegonia
Direct meiosis
Surface budding
Regeneration
10.
The enzymes secreted by the plant to break down bacterial toxins and convert them into non-toxic compounds are:
Detoxifying enzymes
pepsin enzymes
RNA polymerase enzymes
Palace enzymes
11.
Common and economically beneficial chromosome duplication in the plant kingdom (such as strawberries, wheat, and apples) leads to:
Plant sterility and death
Larger cells and tissues and larger, sweeter and more productive fruits
Root loss
Loss of chlorophyll
12.
The volume expansion coefficient at constant pressure (alpha_v) and the pressure expansion coefficient at constant volume (beta_p) for all ideal gases have the universal constant value of:
1 / 273.15 K−1 (approx. 0.00366 K−1)
8.314 J/(mol.K)
1.013 x 105 Pa
273.15 K
13.
A fixed quantity of an ideal gas has a volume of 600 cm3 at 27 °C. If the gas is heated to 127 °C under constant pressure, its new volume will be:
700 cm3
1200 cm3
800 cm3
900 cm3
14.
Plant hypersensitivity is an effective immunological method that includes:
Secreting nectar to attract bees
Stomata open at night
Root loss
The plant kills some of its infected tissues and cells locally to prevent the spread of the microbe to healthy tissues
15.
The motile phase (motile zygote / ookinete) in the life cycle of Plasmodium malaria is characterized by:
It is diploid (2N) and penetrates the mosquito's stomach wall and turns into an egg sac
It attacks red blood cells
It secretes malaria toxin
Haploid group N
16.
The movement of hydrotropism in plant roots is considered tropism:
Positive (the root bends in the direction of moisture and water concentration)
Negatively
Unaffected
randomly
17.
Which of the following solutions has the lowest pH value (strongest acidity) at equal concentration?
CH3COOH
NH4OH
NaCl
HCl
18.
The infective stage of the female Anopheles mosquito in the life cycle of Plasmodium malaria is:
Merozoites
Zygote
Gametocytes
Sporozoites
19.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Sporozoites
Merozoites
Gametophytes
Kinetic phase (okinete)
20.
Which of the following organisms has its genetic material as a single molecule of RNA rather than DNA?
Escherichia coli bacteria
Bacteriophage T2
Human immunodeficiency virus (HIV), polio virus, influenza and coronavirus
Yeast
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