Cellulose microfibrils have an ordered structure and are synthesized at the plasma membrane, given characteristics of microfibrils;

a) Each microfibril is composed of an estimated 18 parallel chains of (1,4)-linked β-D-glucose chains tightly bonded to each other to form a crystalline microfibril

b) Microfibrils have hydrophilic surfaces, populated by polar –OH groups extending from the plane of the sugar rings

c) Microfibrils have hydrophobic surfaces, populated by nonpolar C–H groups populating the sides of stacked glucose chains

 d) microfibril important for enzymatic attack by microbial cellulases, which dock onto the hydrophobic surface and remove one glucan chain at a time

Which of the following from given characteristics of microfibrils is incorrect?

#Question id: 10170

#Unit 6. System Physiology – Plant

Which of the following given facts regarding CAM Plants are TRUE?

a.) The leaves of CAM plants have traits that minimize water loss, such as thick cuticles, large vacuoles, and stomata with small apertures

b.) All CAM plants, the initial capture of CO2 into four-carbon acids takes place at night, and the posterior incorporation of CO2 into carbon skeletons occurs during the day

c.) The CO2 taken up during the night is fixed into malate

d.) Tight packing of the mesophyll cells enhances CAM performance by restricting CO2 loss during the day

#Question id: 10171

#Unit 6. System Physiology – Plant

Quantum flux, or photon flux density (PFD), is the number of incident quanta (singular quantum) striking the leaf, expressed in

#Question id: 10172

#Unit 6. System Physiology – Plant

leaves continuously adjust the orientation of their laminae such that they remain perpendicular to the sun’s ray and maximize light absorption by

#Question id: 10173

#Unit 6. System Physiology – Plant

 Some solar-tracking plants can also move their leaves so that they avoid full exposure to sunlight, thus minimizing heating and water loss. These sun-avoiding leaves are called

#Question id: 10174

#Unit 6. System Physiology – Plant

A developmental process in which leaves express a set of biochemical and morphological adjustments that are suited to the particular environment in which the leaves are exposed known as

#Question id: 10175

#Unit 6. System Physiology – Plant

if you take a plant that developed indoors and transfer it outdoors; after some time, if it is the right type of plant what will happened?