Microscopy and Cell Biology Flashcard

Front

Which scientist created his own microscopes and observed 'animalcules'?

Back

Anton van Leeuwenhoek

Front

What type of microscope uses visible light passed through a specimen and can achieve up to ~1,000x life-size magnification?

Back

Light microscope (LM)

Front

Why are most subcellular structures, including organelles, too small to be resolved by light microscopy?

Back

Their size is below the resolution limit of light microscopes

Front

What is a basic feature found in all cells? Options: Nucleus, Plasma membrane, Mitochondria, Cell wall

Back

Plasma membrane

Front

Which of the following statements best describes the plasma membrane?

Back

It is a selective barrier that allows passage of oxygen, nutrients, and waste.

Front

Why is the ratio of surface area to volume critical for cells?

Back

It affects the cell's ability to exchange materials with its environment.

Front

Which of the following is true about prokaryotic cells compared to eukaryotic cells?

Back

Prokaryotic cells have no nucleus.

Front

Why do small cells have a greater surface area to volume ratio?

Back

Their surface area increases faster than their volume as they get smaller.

Front

What is the main function of ribosomes in a eukaryotic cell?

Back

Synthesizing proteins

Front

Which structure encloses the nucleus and separates DNA from the cytoplasm?

Back

Nuclear envelope