PLANT STRUCTURE QUIZ

Which of the following statements about the outer mitochondrial membrane is not true?

The outer membrane is highly permeable to substances of small molecular weight

The outer membrane is about 50% lipid and 50% protein by weight

The outer membrane contains porins

The outer membrane is impermeable to hydrogen ions

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statements about mitochondrial proteins is true?

All mitochondrial proteins are coded for and synthesized in the mitochondria

Mitochondrial proteins arise from other mitochondrial proteins

Some mitochondrial proteins are coded for and synthesized in the mitochondria and others

All mitochondrial proteins are imported from the cytoplasm

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not true about a photon?

It donates electron to reduce carbon dioxide to glucose

It is trapped by photosynthetic unit

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

It is a packet of light energy

TRUE ANSWER : ?
YOUR ANSWER : ?

The composition of the inner mitochondrial membrane is most like that of

the cell's plasma membrane

the outer mitochondrial membrane

the nuclear membrane

some bacterial plasma membranes

TRUE ANSWER : ?
YOUR ANSWER : ?

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?

None of these

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

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

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Both plant and animal cell possess

central vacuoles

cell walls

mitochondria

chloroplast

TRUE ANSWER : ?
YOUR ANSWER : ?

A cell without cell wall is called

apoplast

none of these

protoplast

symplast

TRUE ANSWER : ?
YOUR ANSWER : ?

Which part of a plant contains the male sex cell?

Style

Ova

Stamen

Pollen

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not an electron carrier class in the electron transport chain?

Iron - sulfur proteins

Cytochrome c oxidase

Flavoproteins

Cytochromes

TRUE ANSWER : ?
YOUR ANSWER : ?

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

mitochondria are surrounded by a semi permeable membrane

mitochondria were derived from a symbiotic bacterium

the mitochondrial matrix is hypertonic to the cellular cytoplasm

the mitochondrial matrix is hypotonic to the cellular cytoplasm

TRUE ANSWER : ?
YOUR ANSWER : ?

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