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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 1 Quiz: Types of RNA, Genetic Code and Protein Translation

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  • Questions count: 20
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1.
The enzyme found in the apical body (Acrosome) of the sperm that helps it penetrate the compact envelope of the egg is:
Hyaluronidase enzyme
Amylase enzyme
Cholinesterase enzyme
pepsin enzyme
2.
A person who skillfully makes beautiful objects by hand is called a/an ________.
pilot
scientist
artisan
engineer
3.
Which of the following immune structures represents the first line of defense in the human body to prevent the entry of pathogens?
Intact skin with its stratum corneum, mucus, HCl in the stomach, and saliva saturated with lysozyme
Toxic T cells
Antibodies
Macrophages
4.
Potters use high-temperature ovens called ________ to bake and harden clay vessels.
looms
fridges
kilns
blenders
5.
While the students ________ in the art workshop, the tour guide arrived.
worked
work
were working
are working
6.
Which of the following compounds exhibits polar covalent bonding due to a significant difference in electronegativity between 0.4 and 1.7?
Water (H2O)
Methane (CH4)
Chlorine gas (Cl2)
Sodium chloride (NaCl)
7.
Modifying enzymes produced by bacteria work to:
Adding methyl groups (-CH3) to the nucleotides of recognition sites in bacterial DNA to protect it from their shortening enzymes.
Cell wall construction
Cracking viruses
Sugar analysis
8.
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
99 Acid
300 Acid
100 Amino acid
9.
In prokaryotic cells (such as bacteria), a single circular DNA molecule attaches to the plasma membrane at:
One or more sites from which DNA replication begins
Nuclear envelope
Centrosome
Ribosome
10.
Fructose, which is found in semen to nourish sperm outside the testicle, is secreted by:
Tomorrow Cooper
Epididymis
The seminal vesicles
Prostate gland
11.
Lymphotoxins secreted by cytotoxic T cells (Tc) eliminate the infected cell by:
Immunosuppression
Calcium withdrawal
Blood plasma coagulation
Activation of certain genes within the nucleus of the infected cell, which leads to the fragmentation of its genetic material and its programmed death (Apoptosis).
12.
The percentage of DNA encoding the construction of proteins and enzymes in the genetic content of eukaryotic cells (such as humans) represents approximately:
50%
100%
Less than 2% Of the total cell genome
More than 90%
13.
Rotational cytoplasmic movement inside living plant cells (such as Elodea plants) is indicated by:
Stomata open
Movement of chloroplasts immersed in the cytoplasm stream in a constant rotational direction
Change in cell wall thickness
Mitochondrial division
14.
The sum of the first 10 terms of the geometric sequence 2, 6, 18, 54, ... equals:
118,096
29,524
59,048
19,682
15.
Okazaki Fragments formed on the die strip (5' to 3') During DNA replication they are joined by an enzyme:
Polymerase enzyme
Tac polymerase enzyme
DNA ligase
Helix enzyme
16.
Charles's Law establishes that at constant pressure, the volume of a given mass of gas is directly proportional to its:
Celsius temperature only
Square of the absolute temperature
Atmospheric density
Absolute temperature in Kelvin (T_K = t_C + 273.15)
17.
Absolute zero temperature (0 Kelvin or -273.15 °C) is defined physically as the theoretical temperature at which:
The volume and pressure of an ideal gas theoretically extrapolate to zero and translational molecular motion reaches its quantum minimum
All liquids solidify into glass
Water reaches its maximum density
Atmospheric air completely combusts
18.
Immunoglobulin (antibody), which exists as a pentamer and contains 10 sites to bind to the antigen is:
IgM
IgA
IgG
IgE
19.
Which enzyme is responsible for linking Okazaki fragments into a continuous strand during lagging strand replication?
DNA Polymerase
Reverse Transcriptase
DNA Ligase
DNA Helicase
20.
Natural killer (NK) cells attack and kill cancer cells and virus-infected cells by:
Secretion of antibodies
Secretion of specialized digestive enzymes without the need for prior specific antigen recognition
Swallow the cells whole
Histamine secretion
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