Curriculum
Login

Curriculum

Biology & Geology

Chapter 1 - Support and Movement in Living Organisms

0/26

Chapter 2 - Hormonal Coordination in Living Organisms

0/32

Chapter 3 - Reproduction in Living Organisms

0/33

Chapter 4 - Immunity in Living Organisms

0/34

Chapter 5 - Molecular Biology - DNA Structure and Function

0/43

Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

0/38

Chapter 7 - Geology, Earth Sciences and Ecology

0/28
Quiz

Lesson 1 Quiz: Plant Immunity (Structural and Biochemical Defense)

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit
  • Questions count: 20
Start Quiz
1.
A person who skillfully makes beautiful objects by hand is called a/an ________.
engineer
pilot
artisan
scientist
2.
The phenomenon of natural parthenogenesis in honey bees results in:
Bees are always male, and their somatic cells are haploid (1N) resulting from an unfertilized egg that grows mitotically.
Diploid males
Fertile queens (2N)
Female workers only
3.
The pituitary gland is considered the master of the endocrine glands (the maestro) because:
Secretes digestive enzymes
Connected to the liver
The largest gland by weight
It secretes stimulating hormones that control the secretions of most other endocrine glands in the body, such as the thyroid, adrenals, and gonads
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
4
2
16
5.
The main chemical reducing agent inside the Midrex furnace and its industrial source are respectively:
Water gas (mixture of CO and H2) produced from natural gas (methane CH4)
Hydrogen gas produced from the electrolysis of water
Carbon dioxide mixed with limestone
Pure carbon monoxide (CO) produced from metallurgical coke
6.
The enzyme extracted from RNA viruses and used to convert mRNA into a single strand of complementary DNA (cDNA) is:
RNA polymerase enzyme
Reverse transcriptase
Ligase enzyme
Palace enzyme
7.
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:
1200 cm3
700 cm3
900 cm3
800 cm3
8.
In the life cycle of the Plasmodium malaria parasite, the human infective phase is:
Sporozoites
Gametophytes
Kinetic phase (okinete)
Merozoites
9.
A gas cylinder contains 10 liters of gas at a pressure of 3.0 atm. If the volume is reduced to 2.5 liters at constant temperature, the new pressure inside the cylinder will be:
6.0 atm
7.5 atm
1.2 atm
12.0 atm
10.
The number of amino acid molecules in a polypeptide chain resulting from mRNA translation consisting of 303 nucleotides, including the start and stop codons, is equal to:
101 Acid
100 Amino acid
99 Acid
300 Acid
11.
Boyle's Law states that for a fixed mass of an ideal gas kept at constant temperature, the volume V is:
Inversely proportional to its absolute pressure P (P1 * V1 = P2 * V2)
Independent of pressure changes
Directly proportional to absolute temperature
Directly proportional to pressure
12.
An aqueous solution of titanium(IV) chloride (TiCl4) is diamagnetic and colorless because:
The Ti4+ ion has an electronic configuration of [Ar] 3d0, devoid of unpaired d-electrons
Titanium is an alkali earth metal
It absorbs all visible wavelengths of light
Chlorine ions quench all magnetic dipoles
13.
If a double-stranded DNA sample contains 28% Adenine, what is the exact percentage of Cytosine in this sample?
22%
44%
56%
28%
14.
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:
273.15 K
1.013 x 105 Pa
1 / 273.15 K−1 (approx. 0.00366 K−1)
8.314 J/(mol.K)
15.
According to the 2026/2027 Egyptian STEM biology syllabus, what is the exact scientific deduction regarding: Chargaff's Rules of DNA Base Pairing?
Adenine bonds with Guanine via three hydrogen bonds
In any double-stranded DNA molecule, the percentage of Adenine equals Thymine (%A = %T) and Guanine equals Cytosine (%G = %C), with purines equaling pyrimidines
Uracil replaces Thymine in the double helix of nuclear DNA
The percentage of %A + %T always equals 50% in all organisms
16.
The universal gas constant R in SI units has the numerical value and dimensions of:
8.314 J / (mol . K)
6.022 x 1023 J / K
1.38 x 10−23 Pa . m3
0.0821 J / mol
17.
Physiological bracing is considered a temporary bracing because:
It depends entirely on the movement of water through osmosis and disappears when it is lost by dehydration
She disappears into the darkness
Limited only to old leaves
It relies on the deposition of permanent chemicals
18.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A venturi meter and manometer
A torsion balance
A hydrometer
19.
The infective stage of the female Anopheles mosquito in the life cycle of Plasmodium malaria is:
Gametocytes
Merozoites
Sporozoites
Zygote
20.
The decisive experiment for Hershey and Chase (Hershey & Chase) To prove that DNA is the genetic material of bacteriophages, I relied on:
Use of deoxyribonuclease enzyme to analyze protein
Radioactive phosphorus numbering P-32 in DNA and radioactive sulfur numbering S-35 in the protein envelope
Isolation of bacterial plasmids
Radioactive nitrogen and carbon numbering
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20