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 3 Quiz: The Human Reproductive System and Gametogenesis

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.
Watch out! The ladder is shaking violently. You ________ fall!
were
are going to
will
have
2.
Double fertilization in flowering plants involves two fusions:
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)
The fusion of two pollen grains with one egg
Fusion of petals with sepals
Chromosome duplication in Takht cells
3.
The enzyme responsible for constructing an mRNA strand from one of the two DNA strands (template strand 3' to 5') he:
DNA polymerase enzyme
Palace enzyme
Binding enzyme
RNA polymerase
4.
DNA polymerase always adds new nucleotides in a specific direction:
From party 3' to 5' only
In both directions together
randomly
From party 5' To party 3' For new growing bar only
5.
Charles's Law establishes that at constant pressure, the volume of a given mass of gas is directly proportional to its:
Absolute temperature in Kelvin (T_K = t_C + 273.15)
Square of the absolute temperature
Atmospheric density
Celsius temperature only
6.
According to the 2026/2027 Egyptian STEM biology syllabus, what is the exact scientific deduction regarding: Chargaff's Rules of DNA Base Pairing?
The percentage of %A + %T always equals 50% in all organisms
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
7.
Stop codons that bind to the release factor to terminate the translation process are:
AAA And UUU and GGG
AUG And GUG and UUG
UAA And UAG and UGA
CCC And GGG and TTT
8.
A metallic bond is physically described as the electrostatic attraction between:
Positive ions and negative non-metal anions
Protons and neutrons in the nucleus
Positive metal cations in the crystal lattice and the mobile sea of delocalized valence electrons
Dipole molecules in a polar liquid
9.
Which of the following first-row transition metal ions exhibits the highest theoretical magnetic moment in its ground state?
Fe3+ ([Ar] 3d5 with 5 unpaired electrons)
Zn2+ ([Ar] 3d10 with 0 unpaired electrons)
Cu2+ ([Ar] 3d9 with 1 unpaired electron)
Cr3+ ([Ar] 3d3 with 3 unpaired electrons)
10.
The anticodon on the tRNA molecule carrying methionine is:
CAU
GUA
UAC
AUG
11.
The sum to infinity of the geometric series 12 + 6 + 3 + 1.5 + ... equals:
24
Infinity
36
18
12.
The hydrostatic pressure exerted by a static homogeneous liquid of density rho at depth h beneath its free surface is expressed by:
P = 1/2 rho * g * h2
P = rho * g / h
P = rho * g * h
P = rho * h / g
13.
While the students ________ in the art workshop, the tour guide arrived.
were working
are working
worked
work
14.
We visited the pottery village in Fustat ________ our holiday in Cairo.
when
as
while
during
15.
If (x - 1, x + 2, 3x) form a geometric sequence, the positive value of x is:
6
3
4
2
16.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
19,682
118,096
29,524
59,048
17.
The derivative of y = sin(3x) with respect to x is:
cos(3x)
-3 cos(3x)
3 cos(3x)
3 sin(3x)
18.
The sum of the first n terms of an arithmetic sequence (S_n) is formulated as:
S_n = a * (1 - rn) / (1 - r)
S_n = a / (1 - r)
S_n = n / 2 * [ 2a + (n - 1) * d ] = n / 2 * [ a + l ]
S_n = n * (a + d)
19.
The electronic configurations of both Chromium (24Cr) and Copper (29Cu) are anomalous due to the enhanced stability associated with:
Completely empty 4s subshells
Pairing of all electrons in the outer valence level
High electronegativity differences
Half-filled (3d5) and completely filled (3d10) d-subshells respectively
20.
To distinguish between a white precipitate of barium sulfate (BaSO4) and a white precipitate of barium phosphate (Ba3(PO4)2), one should add:
Concentrated nitric acid in the dark
Dilute hydrochloric acid (Ba3(PO4)2 dissolves while BaSO4 remains insoluble)
Ammonium hydroxide solution
Boiling distilled water
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20