This topic contains a solution. Click here to go to the answer

Author Question: Protecting a sample from light is best done by: a. placing the sample in an amber-colored tube b. ... (Read 76 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
Protecting a sample from light is best done by:
 a. placing the sample in an amber-colored tube
  b. All tubes protect the sample from light.
  c. wrapping aluminum foil around the sample
  d. both A and C

Question 2

Circadian changes are best described as:
 a. changes through the course of a year b. hour by hour changes
  c. cyclical changes throughout the day d. changes every 10 years



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meow1234

  • Sr. Member
  • ****
  • Posts: 333
Answer to Question 1

d

Answer to Question 2

c




moongchi

  • Member
  • Posts: 516
Reply 2 on: Jun 25, 2018
Wow, this really help


apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

For a complete list of videos, visit our video library