Podcast
Questions and Answers
DNA is a single-stranded molecule.
DNA is a single-stranded molecule.
False
RNA contains uracil instead of thymine.
RNA contains uracil instead of thymine.
True
DNA contains ribose as its sugar.
DNA contains ribose as its sugar.
False
In DNA, adenine always pairs with thymine.
In DNA, adenine always pairs with thymine.
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It is important to check your answers after completing the activities.
It is important to check your answers after completing the activities.
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Rewards are not necessary for completing activities correctly.
Rewards are not necessary for completing activities correctly.
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You should understand your mistakes before moving on to the next section.
You should understand your mistakes before moving on to the next section.
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Activities should be completed with others to ensure better understanding.
Activities should be completed with others to ensure better understanding.
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Mastering the core concepts is necessary before tackling the activities.
Mastering the core concepts is necessary before tackling the activities.
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You do not need to cover the answers before starting the activities.
You do not need to cover the answers before starting the activities.
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Activities are based on exam-type questions.
Activities are based on exam-type questions.
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It is not necessary to be confident in your answers before checking them.
It is not necessary to be confident in your answers before checking them.
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To calculate something means a numerical answer is required.
To calculate something means a numerical answer is required.
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Differentiating involves identifying similarities between things.
Differentiating involves identifying similarities between things.
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The term 'discuss' means to consider all information and reach a conclusion.
The term 'discuss' means to consider all information and reach a conclusion.
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Listing requires providing extensive details about each item.
Listing requires providing extensive details about each item.
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Identifying means to name the essential characteristics.
Identifying means to name the essential characteristics.
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Describing involves stating in words the main points of a structure or process.
Describing involves stating in words the main points of a structure or process.
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To classify means to calculate a numerical answer.
To classify means to calculate a numerical answer.
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Explaining means to interpret and make clear.
Explaining means to interpret and make clear.
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A CIRCLE should be drawn around the question word in an exam.
A CIRCLE should be drawn around the question word in an exam.
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Labeling is not required in the longitudinal section of the human eye.
Labeling is not required in the longitudinal section of the human eye.
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The human eye can focus on objects without any structures present.
The human eye can focus on objects without any structures present.
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Part 1 of the diagram is involved in the process of dilation.
Part 1 of the diagram is involved in the process of dilation.
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Tabulating information is an effective way to present answers as direct pairs.
Tabulating information is an effective way to present answers as direct pairs.
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In an exam, it is unnecessary to underline any important key words.
In an exam, it is unnecessary to underline any important key words.
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To read a book, the eye's focusing structures must be present.
To read a book, the eye's focusing structures must be present.
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Figure 6.12 contains a transversal section through the human eye.
Figure 6.12 contains a transversal section through the human eye.
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MRNA is double-stranded and contains thymine.
MRNA is double-stranded and contains thymine.
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TRNA contains a triplet of bases known as anticodon.
TRNA contains a triplet of bases known as anticodon.
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Ribosomes are typically attached to tRNA during protein synthesis.
Ribosomes are typically attached to tRNA during protein synthesis.
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The presence of uracil is a characteristic of mRNA.
The presence of uracil is a characteristic of mRNA.
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A codon consists of three bases found in tRNA.
A codon consists of three bases found in tRNA.
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A ribosome synthesizes protein using the amino acids specified by mRNA codons.
A ribosome synthesizes protein using the amino acids specified by mRNA codons.
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Amino acids are directly attached to the mRNA during translation.
Amino acids are directly attached to the mRNA during translation.
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The process of protein synthesis occurs only in the nucleus.
The process of protein synthesis occurs only in the nucleus.
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The codon complementary to the anticodon GUG is CAC.
The codon complementary to the anticodon GUG is CAC.
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Leucine is coded by the DNA base triplet GAA.
Leucine is coded by the DNA base triplet GAA.
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Transcription is the process by which mRNA is formed from a DNA template.
Transcription is the process by which mRNA is formed from a DNA template.
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The amino acid coding for the base triplet GTA is histidine.
The amino acid coding for the base triplet GTA is histidine.
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The sequence of the first three mRNA codons for the given portion of protein is GCU, CAU, UGG.
The sequence of the first three mRNA codons for the given portion of protein is GCU, CAU, UGG.
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The base triplet coding for lysine is TTT.
The base triplet coding for lysine is TTT.
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Proline is specified by the base triplet GGG.
Proline is specified by the base triplet GGG.
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The total number of mRNA codons involved in forming the specified protein portion is 5.
The total number of mRNA codons involved in forming the specified protein portion is 5.
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Amino acids are linked together by peptide bonds.
Amino acids are linked together by peptide bonds.
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The sequence to remember for the triplet CGA is associated with the amino acid lysine.
The sequence to remember for the triplet CGA is associated with the amino acid lysine.
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Study Notes
Grade 12 Life Sciences Study Guide
- CAPS (Curriculum and Assessment Policy Statement) study guide for Grade 12 Life Sciences
- Published by the Department of Basic Education, Republic of South Africa
- ISBNs for various editions are included (2012 & 2014)
- The study guide is licensed under a Creative Commons license, allowing for its use and modification, but not commercial purposes
- Contains information related to topics like Nucleic acids, Meiosis, Reproduction, Genetics, Responding to the environment, Endocrine System, and Evolution.
- Includes tables of contents for various chapters, a ministerial foreword, and detailed explanations, examples, and activities
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Description
Test your knowledge on the fundamental concepts of DNA and RNA. This quiz covers critical comparisons, structural differences, and definitions that are essential for understanding molecular biology. Ensure you grasp these core ideas before progressing in your studies.
