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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.
An ionic bond is formed primarily between:
A metal atom that loses electrons forming a cation and a non-metal atom that gains electrons forming an anion due to electrostatic attraction
Noble gas atoms at very low temperatures
Positive metal ions immersed in a sea of delocalized electrons
Two non-metal atoms sharing pairs of valence electrons equally
2.
The sum to infinity of the geometric series 16 + 8 + 4 + 2 + ... equals:
64
24
30
32
3.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
Prostate gland
The seminal vesicles
Epididymis
Tomorrow Cooper
4.
When examining a patient who suffers from severe weight loss, bulging eyes, rapid heart rate, and high temperature, the doctor diagnoses the condition as:
Exophthalmos caused by excessive secretion of the hormone thyroxine
Dwarfism
Diabetic urine
Myxedema
5.
The derivative of f(x) = 4 x3 - 5 x2 + 7 x - 9 with respect to x is:
f'(x) = 12 x2 - 10 x + 7
f'(x) = 4 x2 - 5 x + 7
f'(x) = 12 x3 - 10 x2 + 7
f'(x) = 12 x2 - 10 x
6.
The two main functional sites on the tRNA molecule are:
The amino acid binding site is at the 3′ end' (sequence CCA), and anticodon site
DNA polymerase site and binding site
Phosphate site and sugar site
Start location and stop location
7.
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)
Fusion of petals with sepals
The fusion of two pollen grains with one egg
Chromosome duplication in Takht cells
8.
According to Chargaff's rules's Rules) In the DNA double helix, the equal ratio is always:
The ratio of adenine A equals thymine T, and the ratio of guanine G equals cytosine C (A+G). = T+C)
A + T = G + C always
A = G And T = C
A / T = 2
9.
The direct cause of myxedema in an adult is:
Hyperactivity of the parathyroid gland
Severe deficiency in thyroxine secretion in adulthood
Excessive increase in growth hormone
Insulin deficiency
10.
The total number of nuclei participating directly in the process of double fertilization in angiosperms is:
5 nuclei
3 nuclei
2 nuclei
8 nuclei
11.
The sum to infinity of the geometric series 12 + 6 + 3 + 1.5 + ... equals:
24
36
18
Infinity
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:
1.013 x 105 Pa
1 / 273.15 K−1 (approx. 0.00366 K−1)
273.15 K
8.314 J/(mol.K)
13.
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
14.
If f(x) = |x - 3|, the derivative f'(3) at x = 3:
Equals 0
Equals -1
Does not exist because the left-hand derivative (-1) does not equal the right-hand derivative (+1)
Equals 1
15.
Party 3' For a DNA strand that ends with a group:
Free hydroxyl (-OH)
Free amine (-NH2)
Free phosphate (-PO4)
Free carboxylate (-COOH)
16.
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
Celsius temperature only
Atmospheric density
17.
Mutations that are inherited to future generations and occur in reproductive cells that produce gametes are called:
Gamete mutations
Temporary spikes
Rebound mutations
Somatic mutations
18.
Real gases behave most closely to an ideal gas under conditions of:
Extremely high pressure and low temperature
Very low pressure and high temperature (where intermolecular attraction forces and molecular volumes become negligible)
Zero gravitational acceleration
High pressure and near liquefaction point
19.
The motile phase (motile zygote / ookinete) in the life cycle of Plasmodium malaria is characterized by:
Haploid group N
It is diploid (2N) and penetrates the mosquito's stomach wall and turns into an egg sac
It secretes malaria toxin
It attacks red blood cells
20.
The mechanical advantage (eta) of an ideal hydraulic press equals all of the following ratios EXCEPT:
Area of the large piston / Area of the small piston (A / a)
Distance moved by the small piston / Distance moved by the large piston (y1 / y2)
Force on the large piston / Force on the small piston (F / f)
Work done by the large piston / Work done on the small piston > 1
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