3(b)Inheritance Flashcards

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1
Q

3.14

Genome

A

Is the entire DNA of an organism and is a
section of a molecule of DNA that codes for a specific protein

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2
Q

3.14

Gene

A

Is a
section of a molecule of DNA that codes for a specific protein

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3
Q

3.15

understand that the nucleus of a cell contains chromosomes on which genes are
located

A
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4
Q

3.16B

DNA molecule

A

Two strands coiled to form a double helix, the
strands being linked by a series of paired bases: adenine (A) with thymine
(T), and cytosine (C) with guanine (G)

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5
Q

3.17B

RNA molecule

A

Single stranded and contains uracil (U)
instead of thymine (T)

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6
Q

3.18B

Transcription

A
  • DNA contains the genetic code and this is used as a template for the synthesis of mRNA.
  • A complementary strand of mRNA is formed.
  • The mRNA leaves the nucleus and enters the cytoplasm.
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7
Q

3.18B

Translation

A
  • Here a ribosome binds to the mRNA and translation begins.
  • The ribosome reads the code/codon, matching tRNA anticodons in sequence.
  • Each tRNA carries its unique amino acid. The sequence of codons defines the sequence of amino acids.
  • The amino acids are joined by the ribosome, using peptide bonds, to form a protein/polypeptide.
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8
Q

3.18B

Role of mRNA

A
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