Biology Chapter 1: Preview of the Cell
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Questions and Answers

Who were the two scientists that co-authored a paper repeating the postulates of cell biology?

  • Rudolf Virchow and Rosalind Franklin
  • Anton van Leeuwenhoek and Gregor Mendel
  • Louis Pasteur and Robert Hooke
  • Matthias Schleiden and Theodor Schwann (correct)

Which aspect of cell biology focused mainly on observation with little emphasis on explanation in the early stages of research?

  • Genetics
  • Biochemistry
  • Mitosis
  • Cytology (correct)

What is Spirulina platensis known for around the world?

  • Marine toxicity
  • Nutritional value and protein content (correct)
  • Being a rare edible fungus
  • Its role in cell division

What did Wohler's synthesis of urea in the laboratory demonstrate about living things?

<p>They are governed by biochemical processes (B)</p> Signup and view all the answers

Which process was shown to be a chemical reaction through the demonstration of fermentation in cells?

<p>Conversion of raw material into product (C)</p> Signup and view all the answers

Which strand in cell biology focuses on information flow and heredity, including sequencing the entire genome and gene editing?

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

What technique uses an electrical field to move proteins, DNA, or RNA molecules through a medium based on size/charge?

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

Why is mass spectrometry important in bioanalysis?

<p>To identify the composition of bioactive plant components (B)</p> Signup and view all the answers

Which scientist laid the foundation for understanding the passage of hereditary factors?

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

In electrophoresis gel, why do longer DNA fragments move slower?

<p>Due to smaller pores in the gel (A)</p> Signup and view all the answers

What is the primary purpose of using mass spectrometry in bioanalysis?

<p>To identify the chemical composition of samples (B)</p> Signup and view all the answers

Which technique helps in tracing the metabolic fate of specific atoms and molecules?

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

Who first isolated DNA and called it nuclein?

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

Which scientists were able to connect specific traits to specific chromosomes in Drosophila melanogaster?

<p>Morgan, Bridges, &amp; Sturtevant (D)</p> Signup and view all the answers

Who proposed the chromosome theory of heredity suggesting Mendel's factors are located on chromosomes?

<p>Morgan, Bridges, &amp; Sturtevant (A)</p> Signup and view all the answers

Which concept stated that each gene is responsible for the production of a single protein?

<p>One gene-one enzyme concept (D)</p> Signup and view all the answers

What did Walther Flemming call the process of cell division?

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

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