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TLS Online TPP Program

#Question id: 2250

Which of the following is true about cystic fibrosis?

#Unit 2. Cellular Organization

  1. The normal CFTR channel protein is a chloride uniporter, but CF patients have a mutation that makes it require ATP.

  2.  CFTR mutations result in a mutated protein, which pumps too many chloride ions out of the cell.

  3. There are no treatments for patients with CF that are specifically targeted to the CFTR receptor.

  4. Patients with the most common mutation make a CFTR protein that is not present in the membrane.

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TLS Online TPP Program

#Question id: 12056

#Unit 7. System Physiology – Animal

A 68-year-old woman with hematemesis has heartburn and stomach pain. Endoscopy shows inflammation involving the gastric body and antrum as well as a small gastric ulcer. Biopsies were positive for Helicobacter pylori. H. pylori damages the gastric mucosa primarily by increasing mucosal levels of which substance?
TLS Online TPP Program

#Question id: 5339

#Unit 8. Inheritance Biology

In human, X and Y chromosomes are not generally homologous due to
TLS Online TPP Program

#Question id: 4081

#Unit 3. Fundamental Processes

Which of the following regulatory scenarios of cell-type-specific expression of fibronectin isoforms in humans is (are) consistent with information on known splicing factors?

a. A Tra-like splicing factor expressed in fibroblasts is required for inclusion of EIIIA and EIIIB exons.

b. An Sxl-like splicing factor is required in hepatocytes for exclusion of EIIIA and EIIIB exons.

c. A Tra-2-like factor enhances binding of the cleavage/polyadenylation complex in fibroblasts.

d. A Dsx-like protein is required to inhibit transcription of the fibronectin gene.
TLS Online TPP Program

#Question id: 18786

#Unit 13. Methods in Biology

Flow cytometry is based on light scattering and fluorescence, in which two types of scattering are used Forward light scattering and side scattering, in which forward determines……………while side determines the………….
TLS Online TPP Program

#Question id: 28888

#Unit 4. Cell Communication and Cell Signaling

Axin is___

a)tumor suppressor protein

b)Proto oncoproteins

c)Cancer causing protein

d)Scaffold proteins