Plant Structure MCQs

Question 1

Any system that is not at equilibrium

Accepted Answer

is thermodynamically unstable, although it may be kinetically stable

Answer

is kinetically unstable, although it may be thermodynamically stable

Answer

is rushing toward equilibrium at a very rapid rate

Answer

requires an enzyme to reach equilibrium

Question 2

The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form?

Accepted Answer

None

Answer

One

Answer

Two

Answer

Four

Question 3

Which of the following functional groups would make a carbon-based compound the least polar?

Accepted Answer

Methyl

Answer

Phosphate

Answer

Carboxyl

Answer

Amino

Question 4

Which is not true about a photon?

Accepted Answer

It donates electron to reduce carbon dioxide to glucose

Answer

It is a packet of light energy

Answer

The shorter the wavelength, the greater the energy of the photons

Answer

It is trapped by photosynthetic unit

Question 5

If the ends of the following polysaccharide are pulled, which one would stretch the most?

Accepted Answer

Starch

Answer

Glycogen

Answer

Cellulose

Answer

None of these

Question 6

Which of the following elements is likely to form the least polar covalent bond with hydrogen?

Accepted Answer

Carbon

Answer

Nitrogen

Answer

Oxygen

Answer

Phosphorus

Question 7

The mitochondria were known in the nineteenth century to be osmotically active on the basis of evidence that

Accepted Answer

mitochondria are surrounded by a semi permeable membrane

Answer

the mitochondrial matrix is hypotonic to the cellular cytoplasm

Answer

the mitochondrial matrix is hypertonic to the cellular cytoplasm

Answer

mitochondria were derived from a symbiotic bacterium

Question 8

Mitochondria can be expected most numerous in

Accepted Answer

muscle cells

Answer

green cells

Answer

red blood cells

Answer

none of these

Question 9

Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential?

Accepted Answer

Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions

Answer

The rules governing oxidation and reduction apply only in vitro, and not in vivo

Answer

Electrons always go from reductants with high redox potentials to oxidants with low redox potentials

Answer

None of the above