Soft keratins, or cytokeratins, are found in epithelial cells and make up the skin.

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#Id: 6644

#Unit 8. Inheritance Biology

TLS Online TPP Program

#Id: 7286

#Unit 6. System Physiology – Plant

That time, there was no selective pressure for rubisco to discriminate between CO2 and O2. 

The Km for CO2 is about 9 microM, and that for O2 is about 350 microM. The modern atmosphere contains about 20% O2 and only 0.04% CO2, so an aqueous solution in equilibrium with air at room temperature contains about 250 microM O2 and 11 microM CO2—concentrations that allow significant O2 “fixation” by rubisco and thus a significant waste of energy.

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#Id: 4310

#Unit 11. Evolution and Behavior

Cope’s rule: A proposed generalization that individual body size in animals tends to increase during evolution.

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#Id: 8243

#Unit 10. Ecological Principles

Random dispersions are not common in nature, largely because abiotic conditions, resources, and interactions with other species are not randomly distributed

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#Id: 8895

#Unit 2. Cellular Organization

Monotelic attachment 

only one kinetochore can attach to microtubules