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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 n-th term of an arithmetic sequence with first term a and common difference d is given by:
T_n = a + n * d
T_n = a * rn − 1
T_n = a + (n - 1) * d
T_n = 1/2 n (2a + d)
2.
In gene cloning technology, a ligase is used to:
Breaking down proteins
mRNA transcription
Cut the plasmid
Linking the integrated sticky ends of a target gene to the sticky ends of a circular plasmid
3.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
19,682
59,048
29,524
118,096
4.
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
900 cm3
1200 cm3
800 cm3
5.
Telomeres are found at the ends of eukaryotic chromosomes and perform an important function in:
Synthesis of enzymes
Centromere doubling
Construction of ribosomes
Protecting chromosomes from corrosion and merging with each other and maintaining their structure
6.
The sum of the first n terms of an arithmetic sequence (S_n) is formulated as:
S_n = n * (a + d)
S_n = a / (1 - r)
S_n = a * (1 - rn) / (1 - r)
S_n = n / 2 * [ 2a + (n - 1) * d ] = n / 2 * [ a + l ]
7.
The sequence is repeated more than one hundred thousand times in the middle of one of the chromosomes of the Drosophila insect (fruit fly) and does not code for any protein:
UAA
AGACT
TATAAT
AUG
8.
Phenolphthalein indicator cannot distinguish between an acidic solution and a neutral solution because:
It is red in both
It is blue in both
It precipitates in both
It is colorless in both
9.
The number of codons that code for the 20 amino acids in the genetic table is equal to:
61 Codons (out of a total of 64 codons after excluding the three stop codons)
32 Codona
20 Codona
64 Codona
10.
The genetic code is characterized as universal because:
It consists of only two letters
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 is found in the nucleus only
11.
Boyle's Law states that for a fixed mass of an ideal gas kept at constant temperature, the volume V is:
Directly proportional to absolute temperature
Independent of pressure changes
Inversely proportional to its absolute pressure P (P1 * V1 = P2 * V2)
Directly proportional to pressure
12.
In a hydraulic press, the ratio of the cross-sectional area of the large piston to that of the small piston is 50. If a force of 100 N is exerted on the small piston, the maximum force exerted by the large piston is:
2 N
5000 N
50,000 N
2500 N
13.
Watch out! The ladder is shaking violently. You ________ fall!
will
were
have
are going to
14.
The salivary glands and sweat glands in the human body are examples of:
Aductal endocrine glands
Steroid tissue
Exocrine ductal glands discharge their secretions through special channels outside the bloodstream
Common glands
15.
The global scientific project that was able to decipher and arrange more than 3 billion pairs of nitrogenous bases in human cells is:
Human Genome Project
Stem cell project
Acquired immunity project
Virus study project
16.
The volume expansion coefficient at constant pressure (alpha_v) of an ideal gas is physically measured using:
A torsion balance
A venturi meter and manometer
Joly's bulb apparatus or Charles's apparatus with a dry mercury droplet index
A hydrometer
17.
The first human protein produced commercially using recombinant DNA technology to treat diabetics is:
Human hormone insulin (Insulin)
Interferon protein
Growth hormone
Hemoglobin
18.
Identical (monozygotic) twins arise genetically as a result of:
Fertilization of one egg by two sperm
Artificial parthenogenesis
Fertilization of one egg by one sperm, then the resulting cell mass is divided into two parts that are identical in genetic makeup and sex.
Fertilization of two eggs by two different sperm
19.
The relative density (specific gravity) of a substance is defined as:
The ratio of the density of the substance to the density of pure water at 4°C
The reciprocal of the buoyant force
The product of density and the acceleration due to gravity
The mass of the substance divided by its volume at 100°C
20.
A synthetic chromosome mutation that occurs when a piece of chromosome separates, wraps around itself at an angle of 180 degrees, and then rejoins in the same position is called:
Inversion mutation
Repetition mutation
Deletion mutation
Transmission mutation
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