Practice Questions

TLS Online TPP Program

#Question id: 14965

An exotoxin is a toxin secreted by bacteria. It can cause damage to the host by destroying cells or disrupting normal cellular metabolism. They are highly potent and can cause major damage to the host. Exotoxins may be secreted by bacteria which

#Unit 2. Cellular Organization

do not consists of LPS
determines bacterial shape.
may have different effects depending on the specific bacterial source.
is toxic due to the effects of the peptide side chains.

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TLS Online TPP Program

#Question id: 646

#Unit 1. Molecules and their Interaction Relevant to Biology

Many biosynthetic pathways are regulated by feedback inhibition of enzymes. In a particular type of feedback inhibition, two endproducts individually do not inhibit an enzyme upstream in the pathway at all, but when both are present they inhibit the same enzyme significantly. What type of feedback inhibition do these inhibitors represent?

TLS Online TPP Program

#Question id: 5097

#Unit 5. Developmental Biology

The embryonic precursor to the human spinal cord is the ________.

TLS Online TPP Program

#Question id: 12630

#Unit 6. System Physiology – Plant

Bioactive brassinosteroid levels are also modulated by a variety of inactivation or catabolic reactions, except;