Which of the following statements best describes how the traits of an organism are determined by the DNA in their cells?

DNA codes for proteins which allow an organism to grow and function.

DNA provides the energy needed for an organism to grow and function.

DNA is copied into mRNA, which controls cellular functions.

DNA unzips and each strand codes for a different amino acid.

The genetic code for an organism is contained in its DNA molecules. What determines the instructions for a specific trait in an organism?

Sequence of the nitrogen bases in the DNA molecules

Number of nucleic acids in the DNA molecules

Types of nitrogen bases in the DNA molecules

What is the purpose of mitosis?

It ensures that new nuclei have an exact copy of DNA.

It guarantees that each daughter cell has half the amount of DNA of parent cells.

It ensures the reproduction of mitochondria and chloroplasts.

It prevents the occurrence of cancer cells.

Refer to the diagram shown. What occurs at G₁?

Period of growth and development between mitotic divisions

Chromatin condenses to form chromosomes

Cleavage of cytoplasm and formation of cell plate

Nuclear membrane, nucleolus, and chromatin fade

Two DNA molecules are the result of DNA replication. Which of the following is a true statement regarding DNA replication?

Each new DNA molecule is made up of one new strand and one original strand.

Each DNA molecule has two new strands.

One of the DNA molecules has two new strands while the other has two original strands.

Each DNA molecule has two original strands.

Normal cells may undergo changes during cell processes that can lead to cancer. However, most of them do not form cancers. Which of the following explanations accounts for the relatively low rates of cancer?

DNA repair systems fix the mutation before it causes cancer.

Cancerous cells die when they are exposed to radiation.

Cancerous cells are crowded out by normal cell growth.

Cancer cells grow only very slowly at first.

What is one way that cellular respiration differs from photosynthesis?

The main source of energy in cellular respiration is glucose.

The energy conversion in cellular respiration takes place in the chloroplast.

The main source of chemical energy in cellular respiration is water.

The final product of cellular respiration is electromagnetic radiation.

Use the diagram above to answer the question: What statement accurately names and describes the function of the organelle labeled B?

A mitochondrion produces energy from food to power cellular processes.

A mitochondrion produces food using radiant energy.

A chloroplast produces energy from food to power cellular processes.

A chloroplast produces food using radiant energy.

Use the diagram above to answer the question: Which of the following statements accurately names and describes the function of the organelle labeled A?

A chloroplast produces food using radiant energy.

A mitochondrion produces energy from food to power cellular processes.

A mitochondrion produces food using radiant energy.

A chloroplast produces energy from food to power cellular processes.

Compare photosynthesis and cellular respiration in terms of the energy used and the energy stored.

Photosynthesis uses light energy and stores it as chemical energy, while cellular respiration releases stored energy.

Photosynthesis releases energy stored in glucose, while cellular respiration stores energy in glucose.

Both processes store energy in the form of ATP.

Photosynthesis and cellular respiration both use chemical energy to produce light energy.

What occurs inside of a cell while it performing the process of respiration?

Sugar is broken down to generate adenosine triphosphate (ATP) molecules that are used for energy.

The negative charge inside of the cell is used to increase the concentration chemicals inside of the cell.

Light reactive chemicals combine carbon dioxide (CO₂) and water to form glucose molecules that are stored as food.

The cell membrane forms around air bubbles to create a vacuole that is used to separate the oxygen from the rest of the air.

Students measured and graphed the activity of enzymes at different temperatures. Which is the most valid conclusion based on this graph?

Enzyme function decreases after a certain favorable temperature.

Enzymes are not affected by temperature.

Enzymes work most effectively at low temperatures.

Raising the temperature always makes an enzyme work better.

The Enzyme-Substrate Complex can be modeled using three steps. What does Step III in the diagram illustrate?

Conversion of substrate into products

Changes in enzymes after reaction

DNA and Nucleotides Quiz

Authored by ALEXIS DELEON

Biology

9th Grade

26 Questions

NGSS covered

Used 13+ times

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MULTIPLE CHOICE QUESTION

45 sec • 4 pts

What significant role does DNA play in the formation and development of an organism?

Encodes information

Provides protection from disease

Produces food material

Releases energy

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-4

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

Twin colts were born from a black mare and a black stallion. One colt was black, and one was brown. The colts have different traits because their DNA contains—

different amounts of sugars in their molecules

different arrangements of nucleotides

different amounts of the base thymine

different numbers of proteins in their molecules

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

What determines the traits of an organism?

Relation of AT to CG base pairs

Number of nitrogen bases in RNA

Presence of ribose or deoxyribose in a nucleic acid

Sequence of nitrogen bases in DNA

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

Of the following bases, which one is not found in DNA?

Adenine

Guanine

Uracil

Thymine

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

The genetic code of organisms determines their traits. Which of the following DNA components make up the genetic code?

Hydrogen bonds

Deoxyribose sugars

Nitrogenous bases

Phosphate groups

Tags

NGSS.HS-LS3-1

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

Which of the following correctly identifies the proper nitrogen base pairing in DNA replication?

A:T; G:C

T:C; G:A

T:U; C:G

A:U; G:C

MULTIPLE CHOICE QUESTION

45 sec • 4 pts

The following represents a small section of one strand of DNA: 5’ TACATGTGCCACT 3’. How should the complementary strand of DNA be represented?

5’ TACATGTGCCACT 3’

3’ ATGTACACCGGTGA 5’

5’ UTGTCUCCGGTGU 3’

3’ AUGUAGAGGCCUGA 5’

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DNA and Nucleotides Quiz

What significant role does DNA play in the formation and development of an organism?

Twin colts were born from a black mare and a black stallion. One colt was black, and one was brown. The colts have different traits because their DNA contains—

What determines the traits of an organism?

Of the following bases, which one is not found in DNA?

The genetic code of organisms determines their traits. Which of the following DNA components make up the genetic code?

Which of the following correctly identifies the proper nitrogen base pairing in DNA replication?

The following represents a small section of one strand of DNA: 5’ TACATGTGCCACT 3’. How should the complementary strand of DNA be represented?

Which of the following statements best describes how the traits of an organism are determined by the DNA in their cells?

The genetic code for an organism is contained in its DNA molecules. What determines the instructions for a specific trait in an organism?

What process results in two complete strands of DNA from one original strand?

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