Practice Questions

TLS Online TPP Program

#Question id: 5740

Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of the resulting offspring undergo chromosome duplication resulting fertile plants. The fertile offspring are known as

#Genetics

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#Question id: 350

#Microbiology

Cohesion, surface tension, and adhesion are the properties of water molecules that ________.

#Question id: 351

#Microbiology

If the cytoplasm of a cell is at pH 7, and the mitochondrial matrix is at pH 8, then the concentration of H+ ions ________.

#Question id: 352

#Microbiology

One mole (mol) of glucose (molecular mass = 180 daltons) is ________.

#Question id: 353

#Microbiology

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

#Question id: 354

#Microbiology

You have a freshly prepared 0.1 M sucrose (molecular mass 342) solution, which means ________.

#Question id: 1389

#Microbiology

Why has C. elegans proven to be a useful model for understanding apoptosis?