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
Darya [45]
3 years ago
14

Why must an experiment or a survey be controlled? What is the difference between the control group and the experimental group in

a controlled experiemnt?
Biology
2 answers:
Novosadov [1.4K]3 years ago
8 0
In tho control group everything is kept constant.
notka56 [123]3 years ago
5 0
An experiment or survey must be controlled in order to receive accurate results.

In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
You might be interested in
Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How do the functions of fats and enzymes di
Triss [41]
Fat is used as a form of energy when the body really needs it. where as an enzyme is used to speed up a reaction in the body or might be needed to start a reaction in a body.

6 0
3 years ago
After the experiment the students noticed that the potato stick with the lowest mass was soft and floppy. Explain why the potato
Savatey [412]

Answer:

When a potato chip is put into salt water, the potato cells become flaccid (soft and floppy). This is because there is a higher concentration of water molecules inside the potato cells than outside. If more water enters the cell, it becomes turgid. This is important in supporting plants.

8 0
3 years ago
Read 2 more answers
Why might the cellular response to a peptide hormone be expected to be rapid compared to the cellular response to a steroid horm
NARA [144]
I think this is because peptide hormones are made in advance and stored in secretory vesicles while steroid hormones are synthesized on demand on precursors, thus the response of peptide hormones will be more rapid. Additionally the receptors for peptides are on the cell membrane while those for steroid hormones are located on cytoplasm or nucleus, some have receptors on the membrane also. 
5 0
3 years ago
Which of the following represents the raw materials of photosynthesis?
lubasha [3.4K]

Answer:

B carbon dioxide and water

Explanation:

photo synthesis is a process where plants manufacture their own food in the presence of sunlight,carbon dioxide and water.

oxygen is the by-product

8 0
2 years ago
HELP ASAP!! I WILL MARK BRAINIEST I NEED HELP ON ALL!!
sergiy2304 [10]

1. I think it is C

2. Possibly A, as shale is a sedimentary mineral

3. C possibly

4. C, obsibian, very glossy and fine, i have some at home, so i know the charactisitics

5. C

6 0
3 years ago
Other questions:
  • "Explain if a person were to consume an apple where would digestion begin. Then explain in detail how the apple would begin to b
    7·2 answers
  • Can some one help me out please
    11·1 answer
  • Do mangos have vitamin c and vitamin a?
    8·2 answers
  • Which matter exists in the liquid state at room temperature?
    8·2 answers
  • The __________ is involved in encoding and transferring new explicit memories to long-term memory.A. cerebellum
    6·1 answer
  • Which one of the following discoveries involving DNA happened first?
    10·1 answer
  • What is the difference between molecules and compounds?
    14·1 answer
  • Which came first: land plants or dinosaurs?
    13·1 answer
  • Write a short note on the activities that cause Air pollution.?
    5·2 answers
  • What are the structures of a villi?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!