Problem:

Question 1: Which of the following is not a characteristic of enzymes?

A) they are proteins

B) they are used up in each reaction, thus need to be produced in large quantities s

C) they act on specific substances called substrates

D) they speed up the rate of chemical reaction

Question 2: Which of these does not have to be present for photosynthesis to occur?

A) water

B) carbon dioxide

C) glucose

D) chlorophyll

Question 3: Each new cell produced by this process will have an identical copy of all

chromosomes and genes possessed by the parent cell:

A) meiosis

B) mitosis

Question 4: During the first division of meiosis,

A) chromosomes separate at the centromere

B) homologous chromosomes separate

C) chromosomes become triploid

Question 5: The number of chromosomes in a human egg cell is

A) 4

B) 8

C) 23

D) 46

Question 6: In the notation A = normal, a = albino, the genotype AA describes

A) heterozygous

B) homozygous dominant

C) homozygous recessive

Question 7: If two normal parents have an albino child, the genotypes of the parents are

A) AA x Aa

B) Aa x Aa

C) Aa x aa

D) aa x aa

Question 8: A father with genotype IAIA and mother with phenotype IBIB would produce children

with blood type:

A) A

B) B

C) AB

D) O

Question 9: A change in DNA base sequence from CATAC to CACAC would describe

A) mutation

B) replication

C) transcription

D) translation

Question 10: Which of these processes does not occur in the nucleus?

A) DNA replication

B) transcription

C) translation

Question 11: tRNA molecules contain anticodons and carry amino acids to be used in this process:

A) mutation

B) DNA replication

C) transcription

D) translation

Question 12: Exchange of genes between maternal and paternal chromosomes before the first

division of meiosis is caused by

A) X-linkage

B) crossing over

C) replication

D) cytokinesis

Question 13: Which is not a subunit of DNA?

A) adenine

B) guanine

C) uracil

D) phosphate

Question 14: A karyotype of an individual with Down syndrome has how many chromosomes?

A) 3

B) 23

C) 46

D) 47

Question 15: If a heterozygous male mates with an albino female, what percentage of albino

children would be expected?

A) 0%

B) 25%

C) 50%

D) 75%

E) 100%

Question 16: A father with genotype IAIB and mother with phenotype O could produce children

with these blood types:

A) AB only

B) A and B only

C) A, B, and AB only

D) A, B, AB, and O

Question 17: During DNA replication, an old DNA strand with base sequence ATCTGAGTA

would serve as a template to form a new complementary strand with the base sequence:

A) TAGACTCAT

B) ATCTGAGTA

C) AUCUCUGUA

Question 17: In peas, tall (T) is dominant to dwarf (t) and, on a separate chromosome set, purple

flower (P) is dominant to white flower (p). If Gregor Mendel crosses the genotypes TtPp

and ttPp, what is the expected ratio of phenotypes in the offspring?

A) 9/16 tall purple flowered, 3/16 tall white, 3/16 dwarf purple, 1/16 dwarf white

B) 3/8 tall purple flowered, 1/8 tall white, 3/8 dwarf purple, 1/8 dwarf white

C) 1/4 tall purple flowered, 1/4 tall white, 1/4 dwarf purple, 1/4 dwarf white

D) 3/4 tall purple flowered, 1/4 dwarf white

Give reasoning with your answer.