Curriculum
Login

Curriculum

Biology & Geology

Chapter 2 - Hormonal Coordination in Living Organisms

0/32

Chapter 3 - Reproduction in Living Organisms

0/33

Chapter 4 - Immunity in Living Organisms

0/34

Chapter 5 - Molecular Biology - DNA Structure and Function

0/43

Chapter 6 - Molecular Biology - RNA, Protein Synthesis and Genetic Engineering

0/38
Quiz

Lesson 1 – DNA Structure, Genetic Engineering and Earth Science — Picture questions (exam style)

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
1.
Bacteria grown in 15N were moved to 14N; the figure shows the centrifuge tubes up to generation 1. Starting with 1 heavy DNA molecule(s), after 2 generations:
Bacteria grown in ¹⁵N were moved to ¹⁴N; the figure shows the centrifuge tubes up to generation 1. Starting with 1 heavy DNA molecule(s), after 2 generations:
hybrid molecules = 2, light molecules = 2, hybrid fraction = 1/2
hybrid molecules = 1, light molecules = 2, hybrid fraction = 1/4
hybrid molecules = 2, light molecules = 2, hybrid fraction = 1/4
hybrid molecules = 2, light molecules = 1, hybrid fraction = 1/4
2.
Bacteria grown in 15N were moved to 14N; the figure shows the centrifuge tubes up to generation 2. Starting with 10 heavy DNA molecule(s), after 5 generations:
Bacteria grown in ¹⁵N were moved to ¹⁴N; the figure shows the centrifuge tubes up to generation 2. Starting with 10 heavy DNA molecule(s), after 5 generations:
hybrid molecules = 160, light molecules = 320, hybrid fraction = 1/16
hybrid molecules = 10, light molecules = 160, hybrid fraction = 1/2
hybrid molecules = 20, light molecules = 300, hybrid fraction = 1/16
hybrid molecules = 40, light molecules = 290, hybrid fraction = 1/5
3.
Bacteria grown in 15N were moved to 14N; the figure shows the centrifuge tubes up to generation 3. Starting with 2 heavy DNA molecule(s), after 5 generations:
Bacteria grown in ¹⁵N were moved to ¹⁴N; the figure shows the centrifuge tubes up to generation 3. Starting with 2 heavy DNA molecule(s), after 5 generations:
hybrid molecules = 4, light molecules = 60, hybrid fraction = 1/16
hybrid molecules = 32, light molecules = 32, hybrid fraction = 1/2
hybrid molecules = 2, light molecules = 60, hybrid fraction = 1/2
hybrid molecules = 4, light molecules = 32, hybrid fraction = 1/5
  • 1
  • 2
  • 3