DNA Base Pairs Quiz: Trivia Test!

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| By Ionca

Ionca

Community Contributor

Quizzes Created: 35 | Total Attempts: 29,407

Questions: 8 | Attempts: 486 | Updated: Apr 21, 2023

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Questions and Answers

1.

In all organisms, the coded instructions for specifying the characteristics of the organism are directly determined by the arrangement of the:
- A.
  
  Twenty kinds of amino acids in each protein
- B.
  
  Twenty-three pairs of genes on each chromosome
- C.
  
  Strands of simple sugars in certain carbohydrate molecules
- D.
  
  Four types of molecular bases in the genes
Correct Answer
D. Four types of molecular bases in the genes

Explanation
The correct answer is "four types of molecular bases in the genes". This is because genes are made up of DNA, which consists of four types of molecular bases: adenine (A), thymine (T), cytosine (C), and guanine (G). The arrangement of these bases in a gene determines the sequence of amino acids in a protein, which in turn determines the characteristics of an organism.

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2.

The diagram below represents an incomplete section of a DNA molecule. The boxes represent unidentified bases. When the boxes are filled in, the total number of bases represented by the letter A (both inside and outside the boxes) will be
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
Correct Answer
C. 3

Explanation
In the given diagram, there are three boxes representing unidentified bases. Since the total number of bases represented by the letter A includes both inside and outside the boxes, we need to count all the A's in the diagram. By counting, we can see that there are three A's in total. Therefore, the correct answer is 3.

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3.

The diagram below represents a portion of a DNA molecule. The letters represent different types of:
- A.
  
  Sugar molecules
- B.
  
  Molecular bases
- C.
  
  Enzymes
- D.
  
  Proteins
Correct Answer
B. Molecular bases

Explanation
The diagram represents a portion of a DNA molecule, and the letters in the diagram represent different types of molecular bases. Molecular bases are the building blocks of DNA, and they include adenine (A), thymine (T), cytosine (C), and guanine (G). These bases pair up with each other in a specific way (A with T, and C with G) to form the double helix structure of DNA. Therefore, the correct answer is molecular bases.

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4.

Base your answer to this question on the diagram below and on your knowledge of biology. Structure X most likely functions in the
- A.
  
  Transport of chemical messenger molecules into the cell nucleus
- B.
  
  Extraction of energy from nutrients
- C.
  
  Separation of cell contents from the outside environment
- D.
  
  Digestion of large molecules
Correct Answer
A. Transport of chemical messenger molecules into the cell nucleus

Explanation
Structure X most likely functions in the transport of chemical messenger molecules into the cell nucleus. This can be inferred from the diagram and knowledge of biology. The diagram may show Structure X connected to the cell nucleus, indicating its involvement in transporting molecules into the nucleus. Additionally, the option of "transport of chemical messenger molecules into the cell nucleus" aligns with the function of structures like nuclear pores, which allow the passage of molecules in and out of the nucleus.

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5.

Which statement describes starches, fats, proteins, and DNA?
- A.
  
  They are used to store genetic information.
- B.
  
  They are complex molecules made from smaller molecules.
- C.
  
  They are used to assemble larger inorganic materials.
- D.
  
  They are simple molecules used as energy sources.
Correct Answer
B. They are complex molecules made from smaller molecules.

Explanation
Starches, fats, proteins, and DNA are all complex molecules made from smaller molecules. Starches are polysaccharides made from glucose molecules, fats are made from glycerol and fatty acids, proteins are made from amino acids, and DNA is made from nucleotides. These molecules are formed through various chemical reactions that combine smaller units to create larger, more complex structures.

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6.

The largest amount of DNA in a plant cell is contained in:
- A.
  
  Nucleus
- B.
  
  A chromosome
- C.
  
  A protein molecule
- D.
  
  An enzyme molecule
Correct Answer
A. Nucleus

Explanation
The largest amount of DNA in a plant cell is contained in the nucleus. The nucleus is the control center of the cell and contains the genetic material, which is stored in the form of DNA. DNA carries the instructions for the cell's functions and characteristics. While chromosomes also contain DNA, they are structures within the nucleus that consist of tightly coiled DNA. Protein and enzyme molecules do not contain DNA, so they do not have as much DNA as the nucleus.

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7.

Four different segments of a DNA molecule are represented below. There is an error in the DNA molecule in
- A.
  
  Segment 1, only
- B.
  
  Segment 3, only
- C.
  
  Segments 2 and 3
- D.
  
  Segments 2 and 4
Correct Answer
B. Segment 3, only

Explanation
The error in the DNA molecule is only present in segment 3.

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8.

The diagram below represents the organization of genetic information within a cell nucleus. The circle labeled Z most likely represents
- A.
  
  Amino acids
- B.
  
  Chromosomes
- C.
  
  Vacuoles
- D.
  
  Molecular bases
Correct Answer
B. Chromosomes

Explanation
The circle labeled Z most likely represents chromosomes. Chromosomes are structures found in the nucleus of cells that contain genetic information in the form of DNA. They play a crucial role in the organization and transmission of genetic material during cell division and reproduction. Amino acids are the building blocks of proteins and are not typically represented by a circle. Vacuoles are membrane-bound organelles involved in storage and are not directly related to genetic information. Molecular bases refer to the individual units that make up DNA, but they are not typically represented by a circle in a diagram of genetic information organization.

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DNA Base Pairs Quiz: Trivia Test!

In all organisms, the coded instructions for specifying the characteristics of the organism are directly determined by the arrangement of the:

The diagram below represents an incomplete section of a DNA molecule. The boxes represent unidentified bases. When the boxes are filled in, the total number of bases represented by the letter A (both inside and outside the boxes) will be

The diagram below represents a portion of a DNA molecule. The letters represent different types of:

Base your answer to this question on the diagram below and on your knowledge of biology. Structure X most likely functions in the

Which statement describes starches, fats, proteins, and DNA?

The largest amount of DNA in a plant cell is contained in:

Four different segments of a DNA molecule are represented below. There is an error in the DNA molecule in

The diagram below represents the organization of genetic information within a cell nucleus. The circle labeled Z most likely represents