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]
4 years ago
8

What is the difference between a control and a variable?

Biology
1 answer:
Alla [95]4 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
Match the following groups with the correct description
ki77a [65]

Answer:

a- 3

b- 2

c- 4

d- 6

e- 5

Explanation:

A) Euglenozoans are eukaryotic organisms that belong to the Kingdom Protista. They are either free-living or parasitic in nature. They have no cell wall in their structure but instead possess a pellicle.

B) Diatoms are photosynthetic algae that belong to the division-Bacillariophyta. The ability to photosynthesize makes them a primary producer in an ecosystem. Their cell wall is made up of silica, which is unique to their group of algae. They also produce oils to maintain buoyancy.

C) Brown algae belong to the division- Phaeophyta. They exhibit alternation of generations in their life cycle where they produce both motile zoospores and sperm.

D) Apicomplexans are organisms such as plasmodium etc that belong to the phylum- Apicomplexa. Most of them are pathogenic, with some affecting humans. They lack cell wall but have a flat vesicle called ALVEOLI.

E) Green algae belong to the division Chlorophyta. They are photosynthetic organisms and exists as unicellular or colonial organisms. They have flagellated for locomotion.

4 0
3 years ago
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST
Elanso [62]
Answer: 50% will be purple
There’s a 50% chance the genes will be heter*zygous (Pp, purple flower) and 50% chance they will be hom*zygous recessive (pp, white flower)
Punnet square drawing attached

6 0
3 years ago
Cells in the body needs what for energy
Natali [406]

Answer:

Mostly glucose

Explanation:

3 0
3 years ago
Read 2 more answers
What is fundamental building block of the body?
alexira [117]
Cells are the fundamental building blocks of the body.
3 0
3 years ago
A toolmark in a doorframe contains small particles. which is the best way to collect them while leaving them in context
Novosadov [1.4K]
A tool mark in a door frame contains small particles; The best way to collect them while leaving them in context is by making a cast. A tool mark is any impression, scratch, or abrasion made when contact occurs between a tool and an object. Abrasion marks are the tool marks made when surfaces slide across one another; objects such as pliers, knives, axes, or a gun barrel make this type of mark. There are three types of tool mark impressions; namely; indentation, abrasion, and cutting marks.
5 0
4 years ago
Other questions:
  • Lisa, a beginning marathon runner, trains in hot (80 degree), humid conditions. her third marathon occurs in hot (80 degree), dr
    12·1 answer
  • Which pair of organelles is responsible for energy supply to eukaryotic cells?
    6·1 answer
  • How long does it take for bugs to die?
    8·1 answer
  • Why chloroplast called energy converting molecule?
    13·1 answer
  • To keep food from entering your lungs, the body's digestive and respiratory systems must work together.
    5·2 answers
  • Check Your Understanding
    13·1 answer
  • Does anyone know my teacher means by this please help
    12·1 answer
  • Please hurry its timed
    11·1 answer
  • The figure shows snowshoe hares with three fur coat patterns,
    12·1 answer
  • Help meeeeeee lzzzzzz
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!