Jaidha Rosenblat
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Jaidha Rosenblat
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Bio Final Exam Melinda Winter

Bio Final Exam Melinda Winter

Question 1 of 32

1

Which of these is the most accurate description of the term "gene?"

Select one of the following:

  • A sequence of DNA nucleotides that are the code for making a particular protein.

  • A strand of DNA that acts as a 3D protein printer.

  • A notable feature or quality of an organism

Explanation

Question 2 of 32

1

Which of the following is the most accurate description of the term "chromosome?"

Select one of the following:

  • A long DNA double-helix, tightly wound around histone proteins.

  • A "protein printing" machine.

  • Long molecules of mRNA

Explanation

Question 3 of 32

1

Three dimensional printed objects with specific shapes and functions

Select one of the following:

  • mRNA

  • DNA

  • Proteins

  • Nucleotides

  • Ribosomes

Explanation

Question 4 of 32

1

The cell's "3D printers."

Select one of the following:

  • mRNA

  • Ribosomes

  • DNA

  • Nucleotides

  • Proteins

Explanation

Question 5 of 32

1

The cell's "flash-drive"--portable copies of files or apps.

Select one of the following:

  • mRNA

  • DNA

  • Ribosomes

  • Proteins

  • Nucleotides

Explanation

Question 6 of 32

1

Software stored in the cell's "hard-drive."

Select one of the following:

  • mRNA

  • DNA

  • Ribosomes

  • Proteins

  • Nucleotides

Explanation

Question 7 of 32

1

Symbols of the cell's software code.

Select one of the following:

  • mRNA

  • DNA

  • Ribosomes

  • Proteins

  • Nucleotides

Explanation

Question 8 of 32

1

Genes are made of a sequence of the nucleotides A, C, T and G.

Select one of the following:

  • True
  • False

Explanation

Question 9 of 32

1

Choose all responses that correctly complete this sentence:
All 20 naturally occurring amino acids are identical in_____________________________________

Select one or more of the following:

  • The atoms in the "amino" group.

  • The central carbon atom with its attached hydrogen atom.

  • The atoms in the "carboxylic acid" group

  • The atoms in the "R-group" side-chain.

Explanation

Question 10 of 32

1

Two important categories of macro-molecules in cells are nucleic acids (DNA and the different RNAs), and protein. Which of the following are characteristics of proteins?

Select one or more of the following:

  • Its function is determined by its shape.

  • Genes are made of this type of molecule.

  • Its function is determined by the sequence of its chemical "symbols."

  • A chain of nucleotides is a....

  • A chain of amino acids is a...

  • It is synthesized ("printed") by ribosomes

Explanation

Question 11 of 32

1

Match each term with its correct description. Making an mRNA copy of a gene.

Select one of the following:

  • DNA Replication

  • transcription

  • translation

Explanation

Question 12 of 32

1

Match each term with its correct description: Copying all a cell's DNA, just before the cell divides into two cells.

Select one of the following:

  • DNA Replicaiton

  • transcription

  • translation

Explanation

Question 13 of 32

1

Match each term with its correct description: Reading mRNA code and printing a protein.

Select one of the following:

  • DNA Replication

  • transcription

  • translation

Explanation

Question 14 of 32

1

Choose the most correct answer to this question:

What are nucleotides?

Select one of the following:

  • The molecular symbols of the genetic code.

  • Chromosomes

  • Amino acids

  • Proteins

Explanation

Question 15 of 32

1

Fill the blank space to complete the text.

On the left are "letters" on one side of a DNA double helix. Add the correct complementary DNA letters, according to the "base-pairing" rule of DNA replication: CGTTA

Explanation

Question 16 of 32

1

Match each biological structure to the job it does in the cell: "Unzips" a DNA molecule, in the process of DNA replication

Select one of the following:

  • helicase

  • tRNA

  • mRNA

  • ribosomes

Explanation

Question 17 of 32

1

Match each biological structure to the job it does in the cell: Prints proteins.

Select one of the following:

  • helicase

  • tRNA

  • mRNA

  • ribosomes

Explanation

Question 18 of 32

1

Match each biological structure to the job it does in the cell: Carries a "print this protein" message to ribosomes.

Select one of the following:

  • helicase

  • tRNA

  • mRNA

  • Ribosomes

Explanation

Question 19 of 32

1

Match each biological structure to the job it does in the cell: Delivers amino acids to ribosomes.

Select one of the following:

  • helicase

  • tRNA

  • mRNA

  • ribosomes

Explanation

Question 20 of 32

1

Select the TWO most precisely correct answers
What functions does DNA perform for the cell?

Select one or more of the following:

  • It prints proteins, from amino acids provided to it by tRNA.

  • The sequence of its nucleotides provide the code for how to print the cell's proteins.

  • The full sequences of all its nucleotides can be replicated, so that when a cell can divides, each new cell gets a full copy of the "hard-drive".

Explanation

Question 21 of 32

1

The following processes happen in one of two places: Inside the nucleus

Select one or more of the following:

  • Transcription of mRNA from DNA gene

  • Synthesis (printing) of proteins

  • Translation of mRNA message by ribosomes.

  • DNA replication

Explanation

Question 22 of 32

1

Select from the dropdown lists to complete the text.

The shape of the protein is determined by( amino acids, the shape of the protein, mRNA, DNA )
The sequence of amino acids is determined by( amino acids, mRNA, shape of Proteins, DNA )
The sequence of mRNA nucleotides is determined by( amino acids, shape of proteins, mRNA, DNA )
A protein's function is determined by( mDNA, DNA, amino acids, shape of proteins )

Explanation

Question 23 of 32

1

The images we always see of chromosomes shaped like an "X" are actually "identical twin chromosomes" (chromatids), after DNA replication.

Select one of the following:

  • True
  • False

Explanation

Question 24 of 32

1

Which of the following are performed by proteins?

Select one or more of the following:

  • Transport amino acids to ribosomes.

  • Is translated by ribosomes.

  • Carry out active transport across the cell membrane.

  • Carry the genetic inheritance of a cell or organism.

  • Form complex cell structures (such as the cytoskeleton).

  • Act as enzymes

Explanation

Question 25 of 32

1

Which of the following are performed by RNA?

Select one or more of the following:

  • Transport amino acids to ribosomes.

  • Is translated by ribosomes.

  • Carry out active transport across the cell membrane.

  • Carry the genetic inheritance of a cell or organism.

  • Form complex cell structures (such as the cytoskeleton)

  • Act as enzymes

Explanation

Question 26 of 32

1

Which of the following are performed by DNA?

Select one or more of the following:

  • Transport amino acids to ribosomes.

  • Is translated by ribosomes.

  • Carry out active transport across the cell membrane.

  • Carry the genetic inheritance of a cell or organism.

  • Form complex cell structures (such as the cytoskeleton).

  • Act as enzymes

Explanation

Question 27 of 32

1

ONE of the following steps does NOT occur during DNA replication (right before a cell divides). Which step is NOT part of DNA replication?

Select one of the following:

  • The DNA double helix is "unzipped" by helicase protein (eventually, unzipping the entire length of every chromosome).

  • Make mRNA copies of the DNA.

  • Add complementary DNA nucleotides to each side of the unzipped helix.

  • Proofread two resulting helices.

Explanation

Question 28 of 32

1

Which "letters" (nucleotides) are found in the DNA "alphabet?"

Select one or more of the following:

  • U

  • A

  • G

  • C

  • T

Explanation

Question 29 of 32

1

Which "letters"(nucleotides) are in the RNA"alphabet?"

Select one or more of the following:

  • U

  • C

  • G

  • A

  • T

Explanation

Question 30 of 32

1

Select from the dropdown lists to complete the text.

Match each energy-gathering process (below) with which organisms do this process.
Respiration: ( Both autotrophs and heterotrophs, Autotrophs only, Heterotrophs only )
Photosynthesis: ( Both autotrophs and heterotrophs, Autotrophs only, Heterotrophs only )

Explanation

Question 31 of 32

1

Which of the following statements are TRUE about glycolysis?

Select one or more of the following:

  • Glycolysis occurs in a cell's cytoplasm

  • Glycolysis produces a small number of "recharged" ATP molecules, for each glucose broken down. Correct

  • Glycolysis requires oxygen

  • Glycolysis happens inside a cell's mitochondria.

Explanation

Question 32 of 32

1

Select each molecule that has high (chemical) energy

Select one or more of the following:

  • Water and CO2

  • ADP and phosphate

  • ATP

  • Oxygen

  • Glucose

Explanation

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