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
oksian1 [2.3K]
3 years ago
13

An experiment measures the growth of crystals in a liquid solution aboard the space shuttle. A collection of bottles has the liq

uid in varying strength, or concentration of the tested substance. What would be a control observation in this experiment?
A. the bottle with 0% concentration


B. the bottle with the weakest concentration


C. the bottle with the strongest concentration


D. the bottle with the medium amount of concentration
Biology
1 answer:
Feliz [49]3 years ago
7 0

The correct answer is option A, that is, the bottle with zero percent concentration.  

The control in the given case would have the liquid in it in the absence of any supplemented dissolved solute. So, as to find whether the solution is making the crystal formation or the liquid can do it by itself.  

The control refers to one element, which is not changed at all through the experiment, as its unchanging condition permits the association between the other variables being examined to be better comprehended.  


You might be interested in
When a sucrose molecule is digested which monosaccharide are produced
Artemon [7]
The monosaccharides that are produced when sucrose is digested would be glucose and fructose.
6 0
3 years ago
11. Which type of cells does NOT contain a nucleus?
ki77a [65]

Answer:

A, a prokaryotic cell

Explanation:

Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages.

4 0
2 years ago
Read 2 more answers
Which statement best explains the decrease in energy availability in a food chain?
Stolb23 [73]

Answer: The correct answer is D) Some energy in each trophic level is used for life processes.  

Food chain represents the flow of energy through various living organisms (which lie at different trophic levels) in an ecosystem. The energy flows from one trophic level to the next and it is decreased with subsequent trophic levels.

As per the law of 10% energy transfer, only 10 % of the energy is transferred from one level to the next as the rest of the energy at every trophic level is utilized in various metabolic processes like respiration, digestion, excretion and also liberated as heat in the surrounding.

Due to this, the energy available at any trophic level is less than the previous trophic level.

7 0
3 years ago
Read 2 more answers
This particular hormone raises calcium levels in the blood and stimulates the removal of calcium from the bone through osteoclas
lesantik [10]

Answer:

Parathyroid hormone

Explanation:

Parathyroid hormone is directly involved in the bones, kidneys, and the small intestine. In the bones, PTH stimulates the release of calcium in an indirect process through osteoclasts which ultimately lead to resorption of the bones.

7 0
3 years ago
Which organism is classified in a division
Tamiku [17]

Answer:

what are the choices

4 0
3 years ago
Read 2 more answers
Other questions:
  • The navel is located in the ________ region of the abdominopelvic cavity.
    15·1 answer
  • A community lives in the desert near an area with high winds. There is very little rainfall or clouds, and no large rivers nearb
    9·1 answer
  • Rhino poaching in south africa
    8·1 answer
  • HELP ME I NEED TO KNOW
    8·2 answers
  • In single celled organisms, materials are stored primarly in
    8·1 answer
  • What is true of the cytoplasm of an unfertilized egg?
    9·1 answer
  • Ravi ran 200 metres race in sports day. He feels that his heart was beating faster than usual. a) Why was his heart beating fast
    5·1 answer
  • 2. Name three plants that reproduce by vegetative propagation.
    15·1 answer
  • What does your gallbladder do in digestion?
    8·1 answer
  • I’ll give brainlist to right answers only! There are three questions.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!