Exam 2: The Molecular Composition of Plant Cells

When many nucleotides undergo dehydration synthesis, the product(s) is(are):

When a polypeptide undergoes hydrolysis, the products are:

The most abundant organic molecules in nature are:

Plants break down their carbohydrate reserves and transport starch to the site where it is needed.

A nucleotide consists of a sugar, a phosphate group, and an amino group.

Unsaturated fats are usually solid at room temperature.

_________ is a monosaccharide, and ______________ is a disaccharide.

Who am I? I form a "blanket" that stabilizes photosynthetic membranes and thus helps the plant cope with heat.

In a phospholipid bilayer, each hydrophobic tail is oriented next to a hydrophilic head of the adjancent molecule.

An RNA molecule consists of a single strand of nucleotides.

Who am I? I give cell walls a lamellar appearance?

Essential oils, components of plant fragrances, are phenolic compounds.

The linear sequence of amino acids is called the ______ structure of a protein.

Which substance makes up more than half of all living matter and more than 90 percent of the weight of most plant tissues?

The principal role of ATP in the cell is:

All proteins have primary, secondary, tertiary, and quaternary structures.

The major classes of secondary plant metabolites are:

Which stabilize the cell wall by forming hydrogen bonds with it?

In all organisms except prokaryotes, an important role of sterols is to:

The ______ structure of a protein involves interactions between two or more polypeptide chains.