study guide
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Explain the differences between genes and DNA. (ESSAY) | Genes tell you traits; DNA is more detailed - DNA makes up genes.
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| What is made up of subunits called nucleotides? | DNA
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| The 4 nucleotides of DNA are….. | adenine and thymine (A & T); and cytosine and guanine (C & G)
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| The 4 nucleotides of RNA are…. | adenine and uracil (A & U); and cytosine and guanine (C & G)
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| Determines how tall you are or whether your hair is curly or straight. | proteins
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| Which pair of nucleotides in DNA pair together? | adenine and thymine; cytosine and guanine
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| Which pair of nucleotides in RNA pair together? | adenine and uracil; cytosine and guanine
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| Sugar, phosphate and nitrogenous base is called….? | a nucleotide
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| Who discovered the adenine in DNA always equals the thymine? | Erwin Chargaff
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| Who used x-ray diffraction to take first image of DNA? | Rosiland Franklin
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| What does DNA look like? | a double helix (twisted ladder)
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| Where is DNA found in the cell? | in nucleus/in bundles called chromosomes
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| Explain the difference between RNA and DNA. (ESSAY) | RNA has one strand, DNA has two strands. RNA is a temporary copy of DNA
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| What is RNA? | it is a mirror copy of DNA
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| Three nitrogenous bases form... | codes for specific amino acids
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| A mutagen is…... | physical or chemical agent that causes a mutation
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| A mutation is…... | caused by a mutagen or random error
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| Describe the insertion mutation | a base is added
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| When scientists transfer individual genes from one organism to another. | genetic engineering
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| What is the first step in making a protein? | RNA copying DNA
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| Organelle where proteins are synthesized by mRNA and tRNA | ribosome
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| String of nucleotides that gives cell information on how to make specific trait | gene
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| Material is made of amino acids that causes most of the differences we see in organisms. | protein
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| DNA is split down the middle during….. | replication
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| Chemical parts that are transferred by tRNA and matched to mRNA | amino acids
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| Makes up each nucleotide in a DNA molecule | sugar, phosphate, base
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| Part of a chromosome | gene
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Created by:
msparks
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