1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ghella [55]
2 years ago
7

A researcher studying handwashing uses guidelines set by the American Society of Microbiology to determine if handwashing has ta

ken place: use warm or hot running water and soap while washing for 10 to 15 seconds all surfaces, including wrists, palms, backs of hands, and under fingernails. This guideline is considered a. the Hawthorne effect. b. an operational definition. c. a correlation. d. a test.
Biology
1 answer:
Mariana [72]2 years ago
5 0

Answer:

The correct answer is b. an operational definition.  

Explanation:

An operational definition constitutes the set of procedures that describe the activities that an observer must carry out to receive sensory impressions, which indicate the existence of a theoretical concept to a greater or lesser degree. In this sense, it tries to clearly indicate how the variables are going to be manipulated or measured and also indicates that to measure a variable, it is necessary to carry out a series of activities or procedures. It is the one that builds or adapts from others, based on the observable characteristics of the phenomenon; indicating the concrete, empirical elements or indicators of the fact to be investigated.

You might be interested in
An unnatural warming of the atmosphere near earth's surface is called
mr Goodwill [35]
The answer is global warming
5 0
3 years ago
List and describe 3 ways that differentiate cold brewing and hot brewing. Focus on difference in taste, aroma and amount of diss
Scrat [10]

Answer:

asdf

Explanation:

4 0
3 years ago
How are the genes split up in sexual reproduction? Use Mendel's laws in your<br> answer.
Murrr4er [49]

Answer:

https://hobart.k12.in.us/jkousen/Biology/mendel.htm

Explanation:

This site will tell you what you need to know.

5 0
3 years ago
Researchers investigating the regulation of neurotransmitter release from presynaptic neurons proposed a model in which CDK5, a
GrogVix [38]

Answer:

"GFP contained in synaptic vesicles moved into the synaptic cleft by exocytosis."

Explanation:

Synaptic vesicles are small membrane sacs that carry neurotransmitters from the cell body where they are produced, to the presynaptic membrane of the terminal button where they are released. The release zone of the presynaptic membrane contains voltage-dependent calcium channels. When an action potential depolarizes the presynaptic plasma membrane, Ca^{2+}-channels open, and  Ca^{2+} flows into the nerve terminal to trigger the exocytosis of synaptic vesicles, thereby releasing their neurotransmitters into the synaptic cleft

3 0
2 years ago
How will you describe the sequence of oxygen carbon dioxide and blood flow in you our words?
lakkis [162]
The flow of oxygen is simply summarized as entering the body through the lungs and being absorbed into the blood. From there, the oxygenated blood is carried to the heart and then pumped all over the body. From there, the oxygen is absorbed by cells that need it for respiration. 
Carbon dioxide is generated via respiration of glucose in muscle and body cells. It then passes into the blood and is carried out to the lungs, where it diffuses out and is breathed out.
Blood follows a double circulation pattern, where deoxygenated is pumped to the lungs from the heart then goes back to the heart to be pumped into the rest of the body.
7 0
3 years ago
Other questions:
  • PLEASE HELP ME!! THIS IS AN EMERGENCY!!
    5·1 answer
  • What is the function of the colon
    7·2 answers
  • Pioneer plant species could be described as those that
    11·2 answers
  • You are comparing two peptides translated in two different cells. The peptide has an identical primary structure, but there is m
    11·1 answer
  • 4. Calculate the specific heat for a 20 g piece of metal if 30 J of energy is
    7·1 answer
  • In which soil horizon do we find organic material?
    9·1 answer
  • What is migration? Give an example.
    15·1 answer
  • Give the number of protons, neutrons and electrons in the lithium atom shown in the
    5·1 answer
  • After food has been chewed thoroughly, it is swallowed. Because both the ____ we breathe and the ____ we eat travel through the
    6·1 answer
  • The gravitational force exertedThe gravitational force exerted by an object depends on its by an object depends on its
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!