At 4:00 p.m. a closed flask of sterile broth is inoculated with 10,000 cells. The lag phase lasts 1 hour. At 9:00 p.m. the log phase culture has population of approximately 41 million cells. The estimated number of generations that has occurred is ________.
A. 21
B. 12
C. 5
D. 27
Answer: B
You might also like to view...
Lichens are an important component in many ecosystems because they ____
a. are primary producers b. help form soil by breaking down rocks c. are food for primary producers d. trap small predators with their hyphae e. form a mutualistic relationship with the roots of most plants
The ABO blood types are controlled by
a. pleiotropy. b. multiple alleles. c. incomplete dominance. d. codominance. e. multiple alleles and codominance.
Place the following components of the nervous system anatomy in order from skull to brain.
A. Dura mater, arachnoid mater, subarachnoid space, pia mater B. Arachnoid mater, subarachnoid space, dura mater, pia mater C. Subarachnoid space, arachnoid mater, dura mater, pia mater D. Dura mater, arachnoid mater, pia mater, subarachnoid space E. Pia mater, arachnoid mater, subarachnoid space, dura mater
During intense physical exercise, human cells and tissues increase their need for oxygen to provide the ATP necessary for work. Why does heart rate have to increase to meet the need for oxygen?
What will be an ideal response?