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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 2 Quiz: Reproduction in Flowering Plants (Angiosperms)

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  • Questions count: 20
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1.
The 7th term of the geometric sequence (2, 6, 18, ...) is:
1458
162
486
729
2.
An air bubble released from the bottom of a deep lake expands in volume as it rises towards the surface because:
The water temperature at the surface is near absolute zero
Atmospheric pressure increases at the surface
The bubble absorbs water molecules into its gas phase
The hydrostatic pressure decreases as depth decreases, allowing the trapped air to expand according to Boyle's law
3.
A U-tube contains water (ρ = 1000 kg/m3) and oil (ρ = 800 kg/m3). If the oil column height above the interface is 10 cm, the balancing water column height is:
8 cm
10 cm
12.5 cm
6.4 cm
4.
If y = sin(3x) + cos(2x), then dy/dx at x = 0 equals:
1
-2
5
3
5.
The antibody that is transferred across the placenta from the blood of the pregnant mother to the blood of the fetus to give it natural, passive, acquired immunity is:
IgG
IgE
IgD
IgM
6.
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
7.
In the arithmetic sequence (3, 7, 11, 15, ...), the common difference d and the 20th term (T_20) are respectively:
d = 5 and T_20 = 98
d = 4 and T_20 = 79
d = 4 and T_20 = 83
d = 3 and T_20 = 60
8.
Using the Quotient Rule, the derivative of y = (x + 3) / (x - 2) for x != 2 is:
1 / (x - 2)2
(2x + 1) / (x - 2)2
5 / (x - 2)2
-5 / (x - 2)2
9.
We visited the pottery village in Fustat ________ our holiday in Cairo.
when
during
while
as
10.
The Ancon breed mutation in sheep with short, arched legs is considered a mutation:
A useful mechanism that the breeder kept in mind to prevent sheep from jumping fences and damaging crops
Numerical chromosome
Harmful innovation
Fatal to fetuses
11.
If y = (2x + 1) * (3x - 4), then dy/dx evaluated at x = 1 equals:
12
7
1
-5
12.
The enzymes secreted by the plant to break down bacterial toxins and convert them into non-toxic compounds are:
Palace enzymes
Detoxifying enzymes
pepsin enzymes
RNA polymerase enzymes
13.
The enzyme responsible for constructing an mRNA strand from one of the two DNA strands (template strand 3' to 5') he:
Binding enzyme
Palace enzyme
DNA polymerase enzyme
RNA polymerase
14.
The Ideal Gas Law combining all empirical gas relationships is mathematically formulated as:
P * V = m * g * h
P * T = n * R * V
P * V = n * R * T
P / V = n * R * T
15.
The chemical formula of aluminum sulfate is correctly written as:
Al3(SO4)2
Al(SO4)3
Al2(SO4)3
AlSO4
16.
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:
Alignment method
Neutralization method
Decomposition method
Deposition method
17.
The slope of the tangent to the curve y = (x + 1)/(x - 1) at x = 2 is:
2
-2
3
-1
18.
The ion directly responsible for the explosion of synaptic vesicles and the release of acetylcholine in the neuromuscular synapse cleft is:
Sodium ion Na+
Chloride ion Cl−
Potassium ion K+
Calcium ion Ca2+
19.
In a U-tube manometer containing two immiscible liquids in equilibrium, the heights of the liquid columns measured above the separating surface are:
Inversely proportional to their respective densities (h1 / h2 = rho2 / rho1)
Directly proportional to their densities
Equal regardless of the liquids used
Proportional to the square of the cross-sectional area of the tube
20.
The universal gas constant R in SI units has the numerical value and dimensions of:
6.022 x 1023 J / K
1.38 x 10−23 Pa . m3
8.314 J / (mol . K)
0.0821 J / mol
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