TLS Online TPP Program

#Question id: 11203


Which of the following statements about action potentials is correct?

#Unit 7. System Physiology – Animal
  1. Action potentials for a given neuron vary in magnitude.
  2. Action potentials for a given neuron vary in duration.
  3. Action potentials are propagated down the length of the axon.
  4. Movement of ions during the action potential occurs mostly through the sodium pump.
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TLS Online TPP Program

#Question id: 13555

#Unit 6. System Physiology – Plant

Water Loss Is Also Regulated by the Pathway Resistance

TLS Online TPP Program

#Question id: 13231

#Unit 6. System Physiology – Plant

The transmembrane pathway is the route followed by water in which

TLS Online TPP Program

#Question id: 13229

#Unit 6. System Physiology – Plant

Deficiencies in mineral elements in most species chlorosis (yellowing of the leaves), especially in the older leaves near the base of the plant by

TLS Online TPP Program

#Question id: 13228

#Unit 6. System Physiology – Plant

Classification of plant mineral nutrients according to biochemical function

          

                  Mineral nutrient

 

                       Functions

 

      A.)  Silicon(Si)

 

     1.)    Constituent of alcohol dehydrogenase, glutamic dehydrogenase, carbonic anhydrase, etc

     B.)  Manganese(Mn)

     2.)    Component of sugar phosphates, nucleic acids, nucleotides, coenzymes, phospholipids, phytic acid, etc. Has a key role in reactions that involve ATP

      C.)  Zinc(Zn)

     3.)    Contributes to cell wall mechanical properties, including rigidity and elasticity.

 

      D.)  Phosphorous(P)

     4.)    Component of ascorbic acid oxidase, tyrosinase, monoamine oxidase, uricase, cytochrome oxidase, phenolase, laccase, and plastocyanin.

      E.)   Copper(Cu)

     5.)    Required for activity of some dehydrogenases, decarboxylases, kinases, oxidases, and peroxidases. Involved with other cation-activated enzymes and photosynthetic O2 evolution


Which of the following combination is correct?

TLS Online TPP Program

#Question id: 13227

#Unit 6. System Physiology – Plant

Match the following  Special Techniques Are Used in Nutritional Studies;

A.) Hydroponic growth system

1.) plant roots lie on the surface of a trough, and nutrient solutions flow in a thin layer along the

trough over the roots and this system ensures that the roots receive an ample supply of oxygen

B.) Nutrient film growth system

2.) In this technique, plants are grown with their roots suspended in air while being sprayed continuously

with a nutrient solution, This approach provides easy manipulation of the gaseous environment around the root

C.) Aeronic growth system

3.) The technique of growing plants with their roots immersed in nutrient solution without soil and requires a large

volume of nutrient solution or frequent adjustment of the nutrient solution to prevent nutrient uptake by roots from

producing radical changes in nutrient concentrations and pH of the medium.

Which of the following combination is correct ?

TLS Online TPP Program

#Question id: 13226

#Unit 6. System Physiology – Plant

Mengel and Kirkby  have proposed that the essential elements be classified instead according to their biochemical role and physiological function, It shows such a classification, in which plant nutrients have been divided into some basic groups these are;
a.) The first group is nutrients that are part of carbon compounds
b.) The second group is important in energy storage reactions or in maintaining structural integrity
c.) The third group has important roles in reactions involving electron transfer or redox reaction
d.) The fourth group is present in plant tissue as either free ions or ions bound 
Which one of the following group represents CORRECT statements