You perform a spread plate to determine the bacterial population in a batch liquid media. You plate 0.1ml of a 10-5 dilution. You incubate the plate and count 10 colonies (cfu). What is the bacterial population in cfu/ml of the stock (undiluted) culture? 10 million colonies 1 million colonies 100 million colonies

Answers

Answer 1

Answer:

Answer: 10 million colonies

The volume of media used is 0.1ml and the concentration diluted to 10^-5, so the actual volume used would be: 0.1ml * 10^-5= 1ml * 10^-6

The media shows 10 colonies. The number of colonies per volume would be: 10 cfu/ (1ml * 10^-6)= 10* 10^6 cfu/ml= 10 million cfu/ml

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Unlike amphibians, reptiles A. have lungs to oxygenate blood.
B. use single-loop circulatory system.
C. have a closed circulation system in which blood circulates entirely within blood vessels.
D. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.

Answers

D. have ventricles that are further divided to lessen mixing of oxygen-rich and oxygen-poor blood.

Amphibians:
A. have lungs to oxygenate blood.
B. use single-loop circulatory system.
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Which environmental changes occur faster?
a. global warming
b. oil spill

Answers

B is the correct answer

Answer:

its B I took the quiz

Explanation:

Nerves at the roots of hair follicles to detect pain, temperature, itch, and hair movement are called _____.Merkel's disks
Meissner's corpuscles
Pacinian corpuscles
free nerve endings

Answers

Answer: Free nerve endings

Explanation:

A free nerve ending can be defined as the bare nerve endings that are unspecialized afferent nerve fibers which sends its signal to sensory neuron.

The main function of these nerve endings is to being the signals to the brain from the periphery of the body. They can sense itch, hair movement, temperature, pain et cetera.

The free nerve endingscan detect pain, temperature, itch and hair movement. Merkel's disks can detect pressure, position and static touch features. Pacinian corpuscles are sensitive to vibration while Meissner's corpuscles are sensitive to light and touch.

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Answers

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What is included in key waterways in the South during the Civil War?A. the Mississippi, Ohio, and Tennessee rivers.

B. the Great Lakes and the Mississippi River.

C. the Ohio, Tennessee, and Columbia rivers.

D. the Great Lakes and the Columbia River.

Answers

"The Mississippi, Ohio, and Tennessee rivers" are the ones among the following choices given in the question that is included in key waterways in the South during the Civil War. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer has helped you.

The answer is A. The Mississippi, Ohio, and Tennessee Rivers

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Answers

It is called photolysis

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