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
ryzh [129]
3 years ago
8

What is the difference between a control and a variable?

Biology
1 answer:
Alla [95]3 years ago
3 0
N an experiment the "control" is the group of people or object this is used to measure the effect of the variable. The "control" is the thing that does not change and is not the thing in question.

In an experiment the "variable" is the thing which is changed and manipulated by the experimenter. It is the effect of something,

Example: You want to test a drug. you get a group of 40 people. 20 people are given the pill, 20 people are not given the pill but a sugar pill. the people who have the pill is the "variable" and the people who dont have the pill is the "control".
You might be interested in
What is the turgor pressure equal to if there is no net diffusion
vova2212 [387]
Turgor pressure is equal to the outside pressure of the atmosphere
3 0
3 years ago
During the process of photosynthesis,
TEA [102]

Answer:

d. less than 100% of the energy captured from sunlight is transformed into potential energy in the form of a hydrogen ion gradient and then into potential energy in the form of covalent bonds

Explanation:

Photosynthesis is process utilized by plants, several bacteria and protists to convert the light energy to chemical energy. So they utilize the photosynthesis as the powerhouse for the energy production. Heterotrophs like human that cannot synthesize their own food, use this converted form of energy by autotrophs.

During the light reaction of photosynthesis the photons from light are absorbed by photosystem I and II. These photons excites the electrons which flow through the electron transport chain from higher potential to lower potential. These electrons release the energy while moving from higher potential to lower potential which is utilized by H+ pump to pump the H+ to lumen of plastids from stroma and of course not the 100% energy is utilized some of the energy dissipates. . So this process causes the accumulation of high potential H+ ions across the membrane. These H+ ions are utilized for the production of ATP by ATP synthase complex when they flow back to lower potential across the membrane through ATP synthase complex.

The ATP and NADPH produced from light reaction are utilized to combine carbon molecules during dark reaction. The covalent bond is used to combine the carbon molecules and we know that combining carbon molecules stores energy in the form of covalent bond.

8 0
3 years ago
Read 2 more answers
Alpa wants to change 0.54 kilometers into a smaller metric unit
wlad13 [49]

If Alpa wants to change 0.54 kilometers into a smaller metric unit, she will be required to multiply.

<h3>What is a Metric unit?</h3>

A Metric unit may be defined as a technique of measurement in which the basic units are the meter, the second, and the kilogram. These units are interchanged with one another by using several formulas of conversion.

The complete question is as follows:

Alpha wants to change 0.54 kilometers into a smaller metric unit. She will have to:

  • multiply
  • divide
  • add
  • subtract

Therefore, If Alpa wants to change 0.54 kilometers into a smaller metric unit, she will be required to multiply.

For example, In case, if she wants to convert 0.54 into meters, then she has to multiply it by 1000, that is, 0.54 * 1000 = 540 meters.

To learn more about Metric units, refer to the link:

brainly.com/question/1576704

#SPJ1

8 0
2 years ago
If humans cant see air can fish see water?
kotykmax [81]

Answer:

Nope. Neither fish nor humans see water or air, because both water and air, are transparent.

Explanation:

5 0
3 years ago
Can Marine Snakes like the Coral Reef Snake, breath under water with gills?
7nadin3 [17]

Answer:no

Explanation:

They don’t have gills

6 0
3 years ago
Other questions:
  • What is the answer to question 13
    15·1 answer
  • An oxidation reaction
    9·1 answer
  • I need help this homework science
    13·1 answer
  • As body temperature rises, the human body produces sweat as a means of cooling. This is an example of?
    15·1 answer
  • Name four factors that affect population growth then explain how each factor contributes to population growth
    10·2 answers
  • CLAVATA1 (CLV1) is a receptor kinase that limits stem cell number and differentiation in the shoot and flower meristems of Arabi
    14·1 answer
  • What does it mean when we say th at the two strands of DNA in the double helix are anti parallel
    13·1 answer
  • Why is carrying capacity important in maintaining a balance ecosystem?
    13·2 answers
  • An E OSY T M has both biotic and abotic<br><br><br><br><br> Science
    5·1 answer
  • Ethanol is an alternative fuel made from corn. What is one of the unfavorable effects of using ethanol as a fuel?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!