Frage 1
Frage
Which of these is the most accurate description of the term "gene?"
Antworten
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A sequence of DNA nucleotides that are the code for making a particular protein.
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A strand of DNA that acts as a 3D protein printer.
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A notable feature or quality of an organism
Frage 2
Frage
Which of the following is the most accurate description of the term "chromosome?"
Frage 3
Frage
Three dimensional printed objects with specific shapes and functions
Antworten
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mRNA
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DNA
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Proteins
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Nucleotides
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Ribosomes
Frage 4
Frage
The cell's "3D printers."
Antworten
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mRNA
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Ribosomes
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DNA
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Nucleotides
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Proteins
Frage 5
Frage
The cell's "flash-drive"--portable copies of files or apps.
Antworten
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mRNA
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DNA
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Ribosomes
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Proteins
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Nucleotides
Frage 6
Frage
Software stored in the cell's "hard-drive."
Antworten
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mRNA
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DNA
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Ribosomes
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Proteins
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Nucleotides
Frage 7
Frage
Symbols of the cell's software code.
Antworten
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mRNA
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DNA
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Ribosomes
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Proteins
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Nucleotides
Frage 8
Frage
Genes are made of a sequence of the nucleotides A, C, T and G.
Frage 9
Frage
Choose all responses that correctly complete this sentence:
All 20 naturally occurring amino acids are identical in_____________________________________
Antworten
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The atoms in the "amino" group.
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The central carbon atom with its attached hydrogen atom.
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The atoms in the "carboxylic acid" group
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The atoms in the "R-group" side-chain.
Frage 10
Frage
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?
Antworten
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Its function is determined by its shape.
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Genes are made of this type of molecule.
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Its function is determined by the sequence of its chemical "symbols."
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A chain of nucleotides is a....
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A chain of amino acids is a...
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It is synthesized ("printed") by ribosomes
Frage 11
Frage
Match each term with its correct description. Making an mRNA copy of a gene.
Antworten
-
DNA Replication
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transcription
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translation
Frage 12
Frage
Match each term with its correct description: Copying all a cell's DNA, just before the cell divides into two cells.
Antworten
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DNA Replicaiton
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transcription
-
translation
Frage 13
Frage
Match each term with its correct description: Reading mRNA code and printing a protein.
Antworten
-
DNA Replication
-
transcription
-
translation
Frage 14
Frage
Choose the most correct answer to this question:
What are nucleotides?
Frage 15
Frage
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
[blank_start]_____[blank_end]
Frage 16
Frage
Match each biological structure to the job it does in the cell: "Unzips" a DNA molecule, in the process of DNA replication
Antworten
-
helicase
-
tRNA
-
mRNA
-
ribosomes
Frage 17
Frage
Match each biological structure to the job it does in the cell: Prints proteins.
Antworten
-
helicase
-
tRNA
-
mRNA
-
ribosomes
Frage 18
Frage
Match each biological structure to the job it does in the cell: Carries a "print this protein" message to ribosomes.
Antworten
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helicase
-
tRNA
-
mRNA
-
Ribosomes
Frage 19
Frage
Match each biological structure to the job it does in the cell: Delivers amino acids to ribosomes.
Antworten
-
helicase
-
tRNA
-
mRNA
-
ribosomes
Frage 20
Frage
Select the TWO most precisely correct answers
What functions does DNA perform for the cell?
Antworten
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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.
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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".
Frage 21
Frage
The following processes happen in one of two places: Inside the nucleus
Antworten
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Transcription of mRNA from DNA gene
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Synthesis (printing) of proteins
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Translation of mRNA message by ribosomes.
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DNA replication
Frage 22
Frage
The shape of the protein is determined by[blank_start]...[blank_end]
The sequence of amino acids is determined by[blank_start]...[blank_end]
The sequence of mRNA nucleotides is determined by[blank_start]...[blank_end]
A protein's function is determined by[blank_start]...[blank_end]
Antworten
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amino acids
-
the shape of the protein
-
mRNA
-
DNA
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amino acids
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mRNA
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shape of Proteins
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DNA
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amino acids
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shape of proteins
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mRNA
-
DNA
-
mDNA
-
DNA
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amino acids
-
shape of proteins
Frage 23
Frage
The images we always see of chromosomes shaped like an "X" are actually "identical twin chromosomes" (chromatids), after DNA replication.
Frage 24
Frage
Which of the following are performed by proteins?
Antworten
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Transport amino acids to ribosomes.
-
Is translated by ribosomes.
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Carry out active transport across the cell membrane.
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Carry the genetic inheritance of a cell or organism.
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Form complex cell structures (such as the cytoskeleton).
-
Act as enzymes
Frage 25
Frage
Which of the following are performed by RNA?
Antworten
-
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
Frage 26
Frage
Which of the following are performed by DNA?
Antworten
-
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
Frage 27
Frage
ONE of the following steps does NOT occur during DNA replication (right before a cell divides). Which step is NOT part of DNA replication?
Antworten
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The DNA double helix is "unzipped" by helicase protein (eventually, unzipping the entire length of every chromosome).
-
Make mRNA copies of the DNA.
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Add complementary DNA nucleotides to each side of the unzipped helix.
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Proofread two resulting helices.
Frage 28
Frage
Which "letters" (nucleotides) are found in the DNA "alphabet?"
Frage 29
Frage
Which "letters"(nucleotides) are in the RNA"alphabet?"
Frage 30
Frage
Match each energy-gathering process (below) with which organisms do this process.
Respiration: [blank_start]___[blank_end]
Photosynthesis: [blank_start]__[blank_end]
Frage 31
Frage
Which of the following statements are TRUE about glycolysis?
Antworten
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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.
Frage 32
Frage
Select each molecule that has high (chemical) energy
Antworten
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Water and CO2
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ADP and phosphate
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ATP
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Oxygen
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Glucose