Biology Chapter 1: Preview of the Cell

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17 Questions

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

Matthias Schleiden and Theodor Schwann

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

Cytology

What is Spirulina platensis known for around the world?

Nutritional value and protein content

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

They are governed by biochemical processes

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

Conversion of raw material into product

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

Third strand

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

Electrophoresis

Why is mass spectrometry important in bioanalysis?

To identify the composition of bioactive plant components

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

Gregor Mendel

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

Due to smaller pores in the gel

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

To identify the chemical composition of samples

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

Centrifugation

Who first isolated DNA and called it nuclein?

Friedrich Miescher

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

Morgan, Bridges, & Sturtevant

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

Morgan, Bridges, & Sturtevant

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

One gene-one enzyme concept

What did Walther Flemming call the process of cell division?

Mitosis

Learn about the early tools and limitations in cell observation, including the role of microscopy, Matthias Schleiden, and Theodor Schwann. Explore the slow progress and descriptive nature of early cell biology.

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