Practice Questions

TLS Online TPP Program

#Question id: 101

You have two bottles, each of which contains a white, crystalline substance. Your lab director tells you that one contains lactose and the other sucrose. Your job is to determine which bottle contains which sugar. Which procedure would you use?

#SCPH05 I Biotechnology

Test both for solubility in water. Sucrose is very soluble; lactose is only minimally soluble.
Test for the ability to reduce Ag+. Only lactose will react.
Dissolve each in water and record the pH. Lactose is far more acidic than sucrose.
React each with bromine (Br2) water. Only sucrose will react.

More Questions

TLS Online TPP Program

#Question id: 2998

#SCPH28 | Zoology

Which of the following statement are correct?

TLS Online TPP Program

#Question id: 63

#SCPH06 I Botany

The two molecules shown in the figures are best described as ________.

TLS Online TPP Program

#Question id: 18390

#SCPH06 I Botany

Which bacterium is mainly found at quite high ionizing radiation zones or areas?

TLS Online TPP Program

#Question id: 2077

#SCPH05 I Biotechnology

In receptor-mediated endocytosis, receptor molecules initially project to the outside of the cell. Where do they end up after endocytosis?

TLS Online TPP Program

#Question id: 15710

#SCPH01 Biochemistry

A phenolic compound, is sometimes added to inhibit the enzyme IAA oxidase responsible for the breakdown of IAA.