1. a grad student has a culture of e. coli with a total volume of 600 ml, and od reading at 550 nm of 1.7. he makes serial dilutions of the culture, starting with a transfer of 1 ml culture into 9 ml tryptone broth. next, he transfers 0.1 ml of this dilution into 0.9 ml tryptone broth, and repeats this two more times to make a total of 4 serial dilutions. he the he then pipets 200 ul from the fourth dilution on an agar plate, spreads it over the surface, and puts the plate in an incubator to grow overnight. the next day, he counts 386 cfus (colony forming units) on the plate.

a. what is the dilution in the third tube? answer with the exponent to the power of 10, that is ? in 10?

b. what is the dilution of cells spread onto the agar plate? answer in decimal notation.

c. how many viable cells are present in the 1,800 ml starting culture? answer in decimal notation.

answer; ///the correct answer to the above question is (

1: the largest region of the brain is the:

  cerebrum

2. the term "psychology" literally means:

the process or procedure of the science or study of the mind.

3. the area of the brain responsible for respiration, heart rate, and smooth muscle control of our blood vessels is t

medulla oblongata

4. the structure that conducts nerve impulses to and from the brain and serves as a reflex center for some sensory information without input from the brain is the:

spinal cord

5. the three-layered membrane that covers the brain and spinal cord and literally means membrane is called the:

meninges

6. the cord-like (string-like) structures that carry bio-electrical impulses from one part of the body to another are called

nerves

7. a group of nerve cell bodies that are found outside of the spinal cord and brain are referred to as:

ganglions or ganglia (pl.) “literal meaning knot”

8. the term that means spinal cord inflammation is:

myel/itis

47

explanation:

ok

it would affect precipitation by causing flooding in some areas of the world due to climate increasing, causing the glaciers in the northern and southern pole of our planet to melt.

i wish you would have provided choices to simplify it and allow me to give an exact answer.