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TLS Online TPP Program

#Question id: 2557

In liver cells, the inner mitochondrial membranes are about five times the area of the outer mitochondrial membranes. What purpose must this serve?

#Unit 2. Cellular Organization

  1. It allows for an increased rate of glycolysis.

  2. It allows for an increased rate of the citric acid cycle.

  3. It increases the surface for oxidative phosphorylation.

  4. It increases the surface for substrate-level phosphorylation.

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TLS Online TPP Program

#Question id: 12910

#Unit 13. Methods in Biology

Match the following:
A. RNA analysis               i. Sexing or cell mutation sites               a. Expressed Sequence tag
B. Forensic science           ii. mRNA analysis                                     b.  Analysis of DNA from blood
C. Gene discovery              iii. DNA profiling                                       c. Active latent viral infections
D. Single-cell analysis     iv.  RT–PCR                                             d. Sex determination of unborn
TLS Online TPP Program

#Question id: 5238

#Unit 5. Developmental Biology

all tissue types possess a unique stem cell niche, and despite many differences among the niche architecture of different tissues, several common principles of stem cell regulation can be applied to all environments. These principles involve extracellular mechanisms leading to intracellular changes that regulate stem cell behavior.

Column A

Column B

I. Extracellular regulatory mechanisms

i. Regulation by endocrine, paracrine, or juxtacrine mechanisms

II. Intracellular regulatory mechanisms

ii. Regulation by a network of transcription factors

iii. Epigenetic regulation

iv. Regulation by cell-to-cell and cell-to-matrix adhesions

v. Regulation by cytoplasmic determinants

Match the following regulatory mechanism (column A) with the factors that regulate stem cell behavior (column B).
TLS Online TPP Program

#Question id: 193

#Unit 1. Molecules and their Interaction Relevant to Biology

An ion commonly found in metalloenzymes and which can undergo reversible oxidation and reduction is
TLS Online TPP Program

#Question id: 1303

#Unit 4. Cell Communication and Cell Signaling

What is a primary function of integrins?
TLS Online TPP Program

#Question id: 32360

#Unit 1. Molecules and their Interaction Relevant to Biology

2-Deoxyglucose (2-DG) inhibits the proliferation of cells and hence finds use as an anti-cancer agent, inhibiting the activities of which of the following enzymes?