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TLS Online TPP Program

#Question id: 4319

Why are BRCA1 and BRCA2 considered to be tumor-suppressor genes?

#Unit 3. Fundamental Processes

  1. Their normal products participate in repair of DNA damage.

  2. The mutant forms of either one of these prevent breast cancer.

  3. The normal genes make estrogen receptors.

  4. They block penetration of breast cells by chemical carcinogens.

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TLS Online TPP Program

#Question id: 2280

#Unit 2. Cellular Organization

The smooth ER is especially abundant in cells that synthesize extensive amounts of
TLS Online TPP Program

#Question id: 2281

#Unit 2. Cellular Organization

Enzymes embedded in the membrane of the smooth ER
TLS Online TPP Program

#Question id: 2282

#Unit 2. Cellular Organization

Which of the following organelles is found in plant cells but not in animal cells?
TLS Online TPP Program

#Question id: 2284

#Unit 2. Cellular Organization

Because they have chloroplasts for energy production, plant cells
TLS Online TPP Program

#Question id: 2285

#Unit 2. Cellular Organization

Assuming all other factors to be the same, electron microscopes have greater resolving power than light microscopes because.
TLS Online TPP Program

#Question id: 2286

#Unit 2. Cellular Organization

Bacterial flagella propel the cell by using