Cells of the heart must contract in synchrony to produce an effective heart beat. The electrical signal telling each cell to contract must reach every cell of the heart at the same time. What kind of cell-to-cell junctions would you expect to find in heart tissue?

TLS Online TPP Program

#Question id: 2259

#Unit 2. Cellular Organization

Which of the following is not a characteristic of prokaryotes?

TLS Online TPP Program

#Question id: 1125

#Unit 4. Cell Communication and Cell Signaling

Examples of G protein–coupled receptors include

a. rhodopsin receptor.             b. β-adrenergic receptor.

c. insulin receptor.                   d. acetylcholine receptor.

TLS Online TPP Program

#Question id: 2387

#Unit 2. Cellular Organization

Where is the catalytic domain of cellulose synthase is located?

TLS Online TPP Program

#Question id: 23703

#Unit 13. Methods in Biology

Which of the following produces multiple identical copies of a gene for basic research or for large-scale production of a gene product?

TLS Online TPP Program

#Question id: 23209

#Unit 13. Methods in Biology

Which microscopy allows examination of three dimensional structure of specimen?