Genes, DNA, and Variability in Living Organisms
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Questions and Answers

What solved the problem of genetic blending?

  • DNA (correct)
  • Ribosomes
  • Eukaryotes
  • Plasma membrane

Which organelle has its own distinct DNA?

  • Mitochondria (correct)
  • Nucleus
  • Ribosomes
  • Cytoplasm

What is the primary function of ribosomes?

  • Protein synthesis (correct)
  • Energy production
  • Storage of genetic information
  • Self-duplication

Which type of life form is characterized by having an organized nucleus around their DNA?

<p>Eukaryotes (C)</p> Signup and view all the answers

What is the primary function of DNA in a cell?

<p>Storage of genetic information (B)</p> Signup and view all the answers

Which nucleotides always pair together in DNA?

<p>Adenine and Thymine (D)</p> Signup and view all the answers

What characteristic distinguishes prokaryotes from eukaryotes?

<p>Having a nucleus around DNA (B)</p> Signup and view all the answers

What is the distinguishing feature of eukaryotes compared to prokaryotes?

<p>Having an organized nucleus around DNA (C)</p> Signup and view all the answers

What is the primary function of mitochondria in a cell?

<p>Provides energy (ATP) to the cell (A)</p> Signup and view all the answers

What process involves making an RNA copy from a gene?

<p>Transcription (C)</p> Signup and view all the answers

Which enzyme is responsible for synthesizing a new copy of DNA during replication?

<p>Polymerase (A)</p> Signup and view all the answers

What is the main role of protein synthesis in cells?

<p>Producing proteins (B)</p> Signup and view all the answers

Which component is responsible for binding oxygen to red blood cells?

<p>Hemoglobin (A)</p> Signup and view all the answers

What is the purpose of introns in DNA?

<p>Contain genetic remnants (B)</p> Signup and view all the answers

Which type of RNA contains the information for making proteins?

<p>mRNA (C)</p> Signup and view all the answers

What is the function of helicase during DNA replication?

<p>Breaks hydrogen bonds (B)</p> Signup and view all the answers

How many amino acids are synthesized by the body out of the 20 essential amino acids?

<p>9 (C)</p> Signup and view all the answers

'Junk DNA' refers to:

<p>'Noncoding' DNA sections with unclear functions (D)</p> Signup and view all the answers

'Essential Amino Acids' are essential because:

<p>'Essential Amino Acids' cannot be synthesized by the body (B)</p> Signup and view all the answers

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