Exam 2-Clicker Questions

Question 1

Life on Earth originated approximately: A. 20 billion years ago B. 3.5 billion years ago C. 1 billion years ago D. 200 million years ago E. 200 thousand years ago

Answer 1

B. 3.5 billion years ago

Question 2

Which of the following is in the correct order? A. prokaryotes, photosynthesis, eukaryotes, multicellular eukaryotes B. prokaryotes, eukaryotes, photosynthesis, multicellular eukaryotes

Answer 2

A. prokaryotes, photosynthesis, eukaryotes, multicellular eukaryotes

Question 3

Most prokaryotes are: A. 1-3nm B. 10-30nm C. 1-3um D. 10-30um E. 100-300um

Answer 3

C. 1-3um (micrometers)

Question 4

The two domains of life that are composed entirely of prokaryotic organisms are: A. Bacteria and Protista B. Fungi and Bacteria C. Protista and Fungi D. Archaea and Bacteria E. Archaea and Protista

Answer 4

D. Archaea and Bacteria

Question 5

Which of the following statements about prokaryotes is TRUE? A. All prokaryotes use aerobic respiration to make ATP B. All prokaryotes are photosynthetic C. All prokaryotes are classified in the same kingdom D. All prokaryotes can tolerate very high temperatures E. None of the statements are TRUE

Answer 5

E. None of the statements are TRUE

Question 6

Approximately what percentage of all bacteria are pathogenic? A. 100% B. 90% C. 20% D. 2% E. >1%

Answer 6

E. >1%

Question 7

All of the organisms that we call protists are: A. prokaryotic organisms that live in hot or salty areas B. pathogenic, prokaryotic organisms C. photosynthetic, prokaryotic organisms D. eukaryotic organisms from the old kingdom “Protista” E. eukaryotic organisms that lack a nucleus

Answer 7

D. eukaryotic organisms from the old kingdom “Protista”

Answer 8

A. Cat B

Question 9

A pea plant is heterozygous at the independent loci for flower color (whitevs. purple) and seed color (yellow vs. green). What types of gametes can it produce?

A. two gamete types: white/yellow and purple/purple

B. two gamete types: white/yellow and purple/green

C. four gamete types: white/yellow, white/green, purple/yellow, and purple/green

D. four gamete types: white/purple, yellow/green, white/white, and purple/purple

E. one gamete type: white/purple/yellow/green

Answer 9

C. four gamete types: white/yellow, white/green, purple/yellow, and purple/green