Bio Test 2

which is an example of disaccharide

maltose

What group of molecules is represented in this structure?

phospholipids

The primary difference between amino acids commonly found in proteins is i. their

R or variable groups

which of the following is responsible for the alpha- helical structure of proteins

R or variable groups

The molecular fragment represented in Figure 3-3 is:

RNA

which is a property of unsaturated fats?

They are generally liquid at room temperature.

Why is it advantageous for cells to be small?

a small cell has a small volume relative to surface area, thereby increasing efficient transport

what type of protein acclerates the thousands of different chemical reactions that take place in an organism

enzyme

what carbohydrate energy storage molecule is found in animal liver and muscle cells

glycogen

If you partially hydrogenate oleic acid, the resulting molecule most likely would:

have a double bond changed from cis to trans

which strategy is most effective for larger cells to have an effective surface area to volume ratio

having thin, finger like projections

an amino group is weakly basic and includes an ______ atom covalent ya bonded to two hydrogen atoms

nitrogen

How many electron pairs are shared between carbon 2 and 3 in the accompanying figure?

one and a half

at which level of protein structure are peptide bonds most important

primary

glucose and frutose are ____ because they have identical molecular formulas but their atoms are arranged differently

structural isomers

assume that the shaded portions of the molecule in the accompanying figure 2 each represent different polypeptide chains

the quaternary

Why are hydrocarbons hydrophobic?

they are composed of many C-H nonpolar covalent bonds

what substance is removed during a condensation reaction

water