22. Which of the following is contained only in a eukaryotic cell? A. cell wall B. nucleus
C. chromosomes

23.Which of the following terms represent the chemical reactions to break down food into simpler compounds in an organism?
A. anabolism
B. catabolism
C. nitrogen cycle

24.What types of molecules are bonded together to form a nucleotide? A. 2 nitrogen bases + 1 sugar
B. 2 sugars + 1 phosphate group
C. 1 nitrogen base + 1 phosphate group + 1 sugar

25.Glucose and oxygen are the two products of photosynthesis A. true
B. false

26.What is the first step in the refining of petroleum? A. cracking
B. drilling
C. distillation

27.When radium-226 (atomic number 88) decays by emitting an alpha particle, it becomes .
A. polonium-222 B. polonium-224 C. radon-222

28.The general name for hydrocarbons with at least one triple covalent bond is .
A. alkenes B. alkanes C. alkynes

29.What particle is emitted in alpha radiation? A. electron
B. photon
C. helium nucleus

30.Which type of compound is this? CH3CH2CH2CH2OH
A. alcohol B. aldehyde C. ether

31.Why are the molecules of hydrocarbons nonpolar? A. The intermolecular attractions are strong.
B. All the bonds are single covalent bonds.
C. The electron pair is shared almost equally in all the bonds.

32. An amino group and a carboxyl group are joined by a bond. A. peptide
B. protein
C. amino

33.What type of radiation is likely to occur when the ratio of protons to neutrons is below the band of stability?
A. alpha decay
B. beta decay
C. neutron emission

34.Covalent bonds are between bases in a DNA base-pair. A. true
B. false

35.What is the name of the functional group in the following compound? R—NH2
A. halogen B. amine C. ether