Genetic Material Summary

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Questions and Answers

Which part of the DNA molecule contains the sequences that encode for amino acids?

  • Introns
  • Promoters
  • Exons (correct)
  • Pseudogenes

What is the function of pseudogenes in the genome?

  • Move throughout the genome
  • Regulate gene expression
  • Appear to be genes but lack any function (correct)
  • Code for amino acids

Which of the following is responsible for delineating the starting point of gene transcription?

  • Introns
  • Pseudogenes
  • Promoters (correct)
  • Repetitive DNA

What is the main function of transposable elements in the genome?

<p>Move throughout the genome (B)</p> Signup and view all the answers

Which nitrogen-containing base pairs with adenine in DNA?

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

Where does DNA primarily reside in eukaryotic cells?

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

What is the term for using DNA as a template to create messenger RNA (mRNA)?

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

Which molecule is essential for carrying signals around the body and regulating body processes?

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

Mitosis is the process of cell division used to produce new:

<p><em>Somatic cells</em> (C)</p> Signup and view all the answers

What extrinsic factors guide gene expression into proteins?

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

How many human chromosomes form pairs of autosomal chromosomes?

<p>22 (C)</p> Signup and view all the answers

Which type of chromosome has the centromere significantly off-center?

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

What structures contain DNA wrapped around histones to form nucleosomes?

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

How many types of chromosomes are there according to the text?

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

In a karyotype, what is used to identify the biological sex of an individual?

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

What are different versions of genes inherited as?

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

Which term describes structures formed by two sister chromatids joined by a common centromere?

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

What kind of chromosomes have the centromere located at the end of the chromosome?

<p>Telocentric chromosomes (D)</p> Signup and view all the answers

What term is used to describe the winding around each other of nucleosomes to form chromatin?

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

What is the primary function of genetic material?

<p>To hold information for cell structure and function (C)</p> Signup and view all the answers

In eukaryotic cells, where is the DNA stored?

<p>In the nucleus, wrapped around proteins called histones (B)</p> Signup and view all the answers

What is the structure of DNA?

<p>A double helix made of two strands of nucleotides twisted together (D)</p> Signup and view all the answers

Which of the following is not a base found in DNA?

<p>Uracil (U) (B)</p> Signup and view all the answers

What is the main difference between DNA and RNA in terms of their structure?

<p>RNA has a different sugar (ribose) than DNA (deoxyribose) (A)</p> Signup and view all the answers

Which of the following bases is found in RNA but not in DNA?

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

In prokaryotic cells, where is the DNA located?

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

What is the human genome made up of?

<p>Different types of DNA sequences (B)</p> Signup and view all the answers

Which of the following is a component of a nucleotide in DNA?

<p>Sugar, phosphate, and base (A)</p> Signup and view all the answers

What is the function of histones in eukaryotic cells?

<p>To wrap around DNA in the nucleus (C)</p> Signup and view all the answers

What defines the specific structure and function of a cell by making certain genes active and other genes permanently inactive?

<p>Differential gene expression (B)</p> Signup and view all the answers

Which process triggers cellular differentiation and the transformation of stem cells into specialized cells?

<p>Differential gene expression (D)</p> Signup and view all the answers

What technology uses RNA sequencing to determine which genes are expressed in a cell?

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

What is the term for the process where extracellular signals in a stem cell's environment cause changes in gene expression?

<p>Cytoplasmic induction (B)</p> Signup and view all the answers

What is the main reason why somatic cells differ in appearance and function, despite having the same genome?

<p>Differential gene expression (D)</p> Signup and view all the answers

Which molecules trigger signal transduction, activating receptors and influencing gene expression changes in cells?

<p><em>Transcription factors</em> (D)</p> Signup and view all the answers

What stage of the cell cycle involves the separation of daughter cells in animal cells through a cleavage furrow?

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

Which type of cells have a fixed structure and function and include liver cells, skin cells, and brain cells?

<p><em>Somatic cells</em> (D)</p> Signup and view all the answers

What is the term used for undifferentiated cells originating from a fetus before they develop into specialized somatic cells?

<p>Embryonic stem cells (D)</p> Signup and view all the answers

Where do genes reside in eukaryotic cells?

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

What is the term for the structures containing DNA wrapped around histones to form nucleosomes?

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

How many pairs of autosomal chromosomes are there in humans?

<p>22 pairs (D)</p> Signup and view all the answers

What term describes chromosomes with the centromere located at the center?

<p>Metacentric chromosomes (D)</p> Signup and view all the answers

In a karyotype, what is used to identify genetic anomalies related to missing or extra chromosomes?

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

Which type of chromosome has the centromere significantly off-center?

<p>Acrocentric chromosomes (B)</p> Signup and view all the answers

What is the term for the process where extracellular signals cause changes in gene expression?

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

What are the structures formed by two sister chromatids joined by a common centromere called?

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

How many human chromosomes are there in total?

<p>46 (D)</p> Signup and view all the answers

Which type of chromosome has the centromere located at the end of the chromosome?

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

Which term is used to describe undifferentiated cells originating from a fetus before developing into specialized somatic cells?

<p>Stem cells (D)</p> Signup and view all the answers

What is the main difference between DNA and RNA in terms of their sugar component?

<p>DNA contains deoxyribose, while RNA contains ribose (C)</p> Signup and view all the answers

Which of the following is NOT a base found in DNA?

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

In eukaryotic cells, where is the DNA located?

<p>In the nucleus, wrapped around histones (A)</p> Signup and view all the answers

What is the structure of DNA?

<p>A double helix of two strands of nucleotides twisted together (B)</p> Signup and view all the answers

Which of the following is a component of a nucleotide in DNA?

<p>Sugar, phosphate, and base (B)</p> Signup and view all the answers

In prokaryotic cells, where is the DNA located?

<p>In the cytoplasm (D)</p> Signup and view all the answers

What is the main function of histones in eukaryotic cells?

<p>To package and organize DNA in the nucleus (B)</p> Signup and view all the answers

Which base pairs with adenine (A) in DNA?

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

What is the term for using DNA as a template to create messenger RNA (mRNA)?

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

Which type of cells have a fixed structure and function and include liver cells, skin cells, and brain cells?

<p>Somatic cells (B)</p> Signup and view all the answers

Which of the following components of DNA is composed of a phosphate group, a deoxyribose sugar, and a nitrogen-containing base?

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

What is the primary function of DNA in living organisms?

<p>Providing instructions for protein synthesis (B)</p> Signup and view all the answers

Which of the following is NOT a function of proteins in the human body?

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

What is the term used to describe the process of using DNA as a template to create messenger RNA (mRNA)?

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

Which of the following is an example of a structural protein mentioned in the text?

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

What is the primary function of the protein myostatin in animals?

<p>Regulating muscle cell growth (C)</p> Signup and view all the answers

Which of the following is a component of a nucleotide in DNA?

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

What is the main difference between mitosis and meiosis in terms of their purpose?

<p>Mitosis produces new somatic cells, while meiosis produces gametes (D)</p> Signup and view all the answers

Which of the following is NOT a function of proteins in the human body?

<p>Replicating DNA (B)</p> Signup and view all the answers

What is the term used to describe sequences of DNA that delineate where the transcription of a gene begins?

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

What is the primary function of cell division?

<p>To produce identical daughter cells for growth, repair, and replacement (C)</p> Signup and view all the answers

During which stage of mitosis do the sister chromatids separate and move towards opposite poles of the cell?

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

What is the process called when undifferentiated stem cells become specialized cells with distinct functions?

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

Which type of cells have a fixed structure and function, and include liver cells, skin cells, and brain cells?

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

What is the process that triggers cellular differentiation called?

<p>Differential gene expression (B)</p> Signup and view all the answers

What is the reason why somatic cells look and function differently from each other, despite having the same genome?

<p>They express different genes (C)</p> Signup and view all the answers

Which component of DNA is responsible for coding for proteins?

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

In eukaryotic cells, where are genes located?

<p>In the nucleus, wrapped around histones (D)</p> Signup and view all the answers

What is the term for molecules that can trigger signal transduction and influence gene expression changes in cells?

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

Which technology uses RNA sequencing to determine which genes are expressed in a cell?

<p>Differential gene expression (DGE) analysis (C)</p> Signup and view all the answers

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