Practice Questions

TLS Online TPP Program

#Question id: 1079

Smoking impairs the ciliated cells of the middle portion of the respiratory tract. Many analgesic drugs (painkillers) impair peristalsis (the churning motion of the digestive tract). The result of either of these activities leads to an increased risk of infection in their respective areas. Why?

#Unit 4. Cell Communication and Cell Signaling

The actions of the cells in these areas help to propel pathogens out of the area, serving as a part of the physical barrier system. When they are impaired/slowed, bacteria and other pathogens have an easier time adhering to the tissues in the area and causing an infection.
Ciliated cells also line the digestive tract, and these cells secrete strong natural antibacterial compounds. When they are impaired, bacteria can more easily infect these areas.
Chemicals in cigarette smoke and the chemicals in painkillers impair our immune systems, making us generally more predisposed to infections (regardless of the tissue area).
Chemicals in cigarette smoke and the chemicals in painkillers impair the ability of our immune system cells to move into areas that are infected. As such, they can't perform their job of eliminating microbes as well as they should and infections result more easily.

More Questions

#Question id: 10757

#Unit 6. System Physiology – Plant

A Negative Hydrostatic Pressure in Soil Water,

#Question id: 10758

#Unit 6. System Physiology – Plant

The component of the soil water potential is hydrostatic pressure (ψp) ,

#Question id: 10759

#Unit 6. System Physiology – Plant

many secondary metabolites have been suggested to have important ecological functions in plants:

a) they protect plants against being eaten by herbivores (herbivory)

b) they protect plants against being infected by microbial pathogens

c) they serve as attractants for pollinators and seed dispersing animals

d) they serve as agents of plant–plant competition

Which of the following combination from above statements is correct?

#Question id: 10760

#Unit 6. System Physiology – Plant

Following are some statements of secondary metabolites of terpenes in plants is incorrect?

#Question id: 10761

#Unit 6. System Physiology – Plant

Which one of the following combinations of secondary metabolite biosynthetic pathway found in the biosynthesis of terpenes?

#Question id: 10762

#Unit 6. System Physiology – Plant

The following are certain statements about secondary metabolites:

a) They protect plants against being eaten by herbivores and against being infected by microbial pathogens

b) Terpenes, are the class of secondary metabolites are synthesized by methyl erythritol phosphate(MEP) pathway and Mevalonic acid pathway

c) Terpenes, are the class of secondary metabolites are synthesized by methyl erythritol phosphate(MEP) pathway and sikkimic acid pathway

Which one of the following combinations of the above statements is correct?