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
Tom [10]
3 years ago
6

A researcher finds that white bread contains more preservatives and has a higher moisture content than wheat bread. She designs

a test to determine whether the type of bread, white or wheat, affects the amount of mold growth. What must be done for the researcher to accurately measure the dependent variable?
She will need to allow mold to grow for more days on the white bread, since it contains more preservatives, to measure the dependent variable.
She will need to limit the dependent variable to white bread or wheat bread.
She will need to allow mold to grow for fewer days on the white bread, since it contains more preservatives, to measure the dependent variable.
She will need to learn out how to quantitatively measure mold growth to measure the dependent variable.
Biology
2 answers:
velikii [3]3 years ago
5 0

Answer: She will need to learn out how to quantitatively measure mold growth to measure the dependent variable.- last choices

photoshop1234 [79]3 years ago
5 0

Answer:

She will need to learn out how to quantitatively measure mold growth to measure the dependent variable.

Explanation:

In any experiment there are two types of variables, dependent and independent. Independent variable is controlled by the experimenter and its value is not affected by the experiment. Dependent variable's value depends on the independent variable and is affected by the experiment.

Here, the experiment is trying to find out the way mold growth is affected by the type of bread. Hence the type of bread is the independent variable and the mold growth is dependent variable. To measure the dependent variable correctly the researcher will have to learn to quantitatively measure the mold growth. Quantitative analysis of mold growth will give an accurate measurement of dependent variable.  

You might be interested in
Placing fruit or flower blossoms in the refrigerator will help them last longer.
alexandr402 [8]
This is true. They are structured to keep well in cold environments so sticking them places such as the refrigerator keeps the well conserved for some time.
6 0
3 years ago
What are these two diagram structures?
notka56 [123]

Answer:

Hydrogen bond

Explanation:

4 0
3 years ago
1). Mammals carry hemoglobin and oxygen in their red blood cells to help the blood circulate in the different parts of their bod
Sonbull [250]

Answer:

In mammals, oxygen is carried through the red blood cells called hemoglobin. The reason is that the oxygen is very important for the cell for releasing energy. This energy is used by the cell in different processes.

2) These adaptations are adapted by the organisms in order to perform different functions. In slow twitch skeletal muscles having high number of mitochondria because it requires more energy while fast twitch skeletal muscles contains less amount of mitochondria due to low requirements of energy. These characteristics are adapted according to the performance of the body parts.

4 0
3 years ago
You have a 15kb plasmid. EcoRI cuts the plasmid into 7kb and 8kb pieces, and BamHI cuts the plasmid into 1kb and 14kb pieces. If
Harman [31]

Answer:

a. Bands at 1kb, 6kb and 8kb

Explanation:

The EcoRI and BamHI are the restriction enzymes which cut the DNA sequence especially a plasmid at specific sites called the restriction sites.

The restriction enzymes produces bands of specific length therefore these restriction enzymes are used to estimate the approximate length of the DNA.

In the given question, the

1. EcoRI- produces two strands of 7 kb and 8 kb

2. BamHI- produces two strands of 1kb and 14kb

This shows that the length of DNA sequence is 15kb

But when the DNA strand are digested with both the enzymes simultaneously then it will produce three bands as:

i) 14 kb can be broken down in 2 bands of 6 kb and 8 kb

ii) 1 kb band is already produced by the Bam HI.

This shows that 1+6+8= 15 kb

Thus, Option-A is correct.

5 0
3 years ago
Which process results in the production of ammonium?
Pavlova-9 [17]
Nitrogen Fixation. Good luck :)
3 0
3 years ago
Other questions:
  • Why does the oxygen atom in a water molecule have negative charge?
    15·2 answers
  • sequence the levels of organization, from at least complex to most complex>>>>> HELLPPPPPPPP
    6·1 answer
  • Out of the organisms listed, which are most closely related based on the characteristics listed.
    8·1 answer
  • Which of the following would be the best way for an ecologist to determine the facts of an industrial waste chemical on the surv
    14·1 answer
  • 1. What kind of pattern do you notice with the structure of DNA? For example, what pattern do you see with the rails and rungs o
    13·1 answer
  • What can effect an organisms traits
    8·1 answer
  • Plz help with science questions I need help
    7·1 answer
  • PLS ANSWER IM SO CONFUSED.................Organisms other than humans are_____ to certain climates and would not survive in othe
    15·1 answer
  • How do endocrine glands send messages to other organs?
    8·1 answer
  • Money that mining companies may be required to post in order to begina mining project
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!