23 Questions
Which scientist(s) proposed the cell theory?
Robert Hooke
What is the basic unit of life according to the cell theory?
Cells
Who is known for the discovery of cells using a microscope?
Anton van Leeuwenhoek
From whom do cells arise according to the cell theory?
Existing cells
Approximately how many cells make up our bodies?
~37 trillion cells
Which organelle is responsible for cellular respiration?
Mitochondria
Which statement about cells is incorrect based on the text?
All cells can move
What term describes cells without a nucleus?
Prokaryotes
Which domain includes organisms that can live in extreme environments?
Bacteria
What is the main component of the cell membrane according to the text?
Phospholipids
What does 'eu-' mean in the context of cell types?
'True'
Which group of organisms are not mentioned in the text as examples of eukaryotes?
Bacteria
What is the main role of actin filaments in the cytoskeleton?
Maintenance of shape
Where does RNA splicing occur in the cell?
Nucleus
What is the main function of rough endoplasmic reticulum (rER)?
Synthesis of secreted and transmembrane proteins
Which organelle is known for its modification of proteins destined for secretion?
Golgi apparatus
What is the size range of mitochondria typically found in cells?
0.5-1 µm x 1-2 µm
What is the optimal pH range for lysosomes to function effectively?
4.5-5
Which organelle is responsible for detoxifying ethanol in the liver?
Peroxisomes
Which process results in the production of H2O2 (hydrogen peroxide) in peroxisomes?
Fatty acid oxidation
What is the function of mitochondria in terms of Ca2+ storage?
Oxidative phosphorylation
Which organelle degrades unwanted proteins and particles taken up by the cell?
Lysosomes
What type of mutations can lead to mitochondrial disorders like Kearns-Sayre syndrome?
Mutations in nuclear genes encoding mitochondrial proteins
Test your knowledge on cell types, subcellular structures, and the basic organization of eukaryotic cells. Quiz covers topics such as prokaryotes, eukaryotes, bacteria, archaea, fungi, plants, animals, organelles, and specialized cellular processes.
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