Biology- Chapter 4

What kind of effect does R-dopa have on Parkinson's disease?

none

Based on the electron configuration of the elements below, which would exhibit a chemical behavior most like that of oxygen?

sulfur

Which of the following best describes cis-trans isomers?

They differ in their spatial arrangement around inflexible double bonds.

acid makes lemons taste sour. Which of the following is a functional group that would cause a molecule such as citric acid to be acidic? See Concept 4.3 (Page)

carboxyl

How many hydrogen atoms can be attached to carbon A?

3

Which of the following is a hydrocarbon?

C3H8

Variation in carbon chains is an important source of molecular complexity. How can carbon skeletons vary?

Carbon skeletons can vary in length, exhibit different branching structures, contain double bonds at different positions, and contain rings of carbon atoms

L-dopa is used to treat _____.

Parkinson's disease

Stanley Miller Experiment

Proved that organic compounds could come from inorganic compounds in earth's early environment.

The large diversity of shapes of biological molecules is possible because of the extensive presence of __________ in the molecules.

carbon

living organisms consist mostly of

carbon based compounds

Most organic compounds contain which atoms?

carbon hydrogen nitrogen oxygen

Which complex organic molecules were synthesized in Miller's experiment?

formaldehyde, hydrogen cyanide, amino acids, hydrocarbons Submit

Molecules that have the same chemical formula (same numbers of each type of atom) but different three-dimensional shapes are called __________.

isomers

What functional group is commonly used in cells to transfer energy from one organic molecule to another?

phosphate

An atom has four electrons in its valence shell. What type(s) of covalent bonds is it capable of forming with oxygen?

single and double