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Leno4ka [110]
3 years ago
6

What is the purpose of having a control and a variable in an experiment?

Biology
1 answer:
11Alexandr11 [23.1K]3 years ago
7 0

a control helps to increase the reliability of the results. it allows a scientist to compare it to other group(s) in an experiment. if a scientist notices a significant different btwn the control and the other groups, he can logically conclude that the independent variable has an impact on the dependent variable.

a variable is any factor, trait or condition that can exist in differing amounts or types. there are usually three tpes of variables in experiments: the independent, dependent and contolled. the independent variable variable is the one that is changed by the scientists to figure it's affect on something.

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Which of the following are compounds? (Choose all that apply.)
STatiana [176]

Answer:

Water, organic biological molecules, sodium chloride, glucose.

Explanation:

A compound is anything composed of two or more separate elements.

  • O2 and H2 are a singular elements, and a chain of carbon atoms is multiple of the same element, so these are not considered compounds.
  • Sodium chloride is sodium and chlorine, and water is oxygen and hydrogen. Glucose is a compound of sugar, and organic biological (or biomolecules) are made up of carbon and hydrogen, so these are all considered compounds

I hope this helps! Happy learning, friend :)

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2 years ago
Which macromolecule is involved in how hemophilia is passed from parents to their children
Serga [27]

Answer:

chromosomes

Explanation:

chromosomes which consist of genes which consist of DNA can pass on traits from parent to child.

it basically works by depending on the gender of the child it can inherit certain traits from its parents

so say the hemophilia is an XX being from the mom and to get the mutation you would need the X that has the mutation and either an X or Y from the dad.

I dont know if hemophilia affects X or Y but that is how the mutation would be passed on.

6 0
3 years ago
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Elect the correct answer.
alukav5142 [94]

She should take her books and go to a local library to study.

Answer:A

8 0
3 years ago
Read 2 more answers
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