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Tanya [424]
3 years ago
10

A controlled experiment allows the scientist to isolate and test___________.a.a conclusion.b.a mass of information.c.several var

iables.d.a single variable.
Biology
1 answer:
vazorg [7]3 years ago
7 0

Answer:

d. a single variable.

Explanation:

<em>A controlled experiment is one in which the researcher can can keep all other factors/variables uniform and see the effects of a particular factor/variable on certain subjects. </em>

For example, in order to determine the effects of different light intensities on the growth of a plant species. All the growth conditions will be uniform for all the subjects (the plant species) except the light intensity. Any discrepancy in growth can thus be attributed to the different light intensities.

The light intensity is varied while other factors are kept uniform.

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Name the vestigeal part of human alimentary canal? ​
tigry1 [53]
Answer:

vermiform appendix
In human, vermiform appendix is the vestigial part of alimentary canal. Explanation: The vermiform appendix is a finger like structure which is connected to cecum, it is present in the junction of small and large intestine. This is known as the tail part of the human.

HOPED IT HELPED:) HAVE A NICE DAY<3
4 0
3 years ago
Does lemon juice have more or less H+ ions than it has OH- ions? explain
LekaFEV [45]

Acids are substances that provide hydrogen ions (H+) and lower pH, whereas bases provide hydroxide ions (OH–) and raise pH. The stronger the acid, the more readily it donates H+. For example, hydrochloric acid and lemon juice are very acidic and readily give up H+ when added to water. ( source : https://courses.lumenlearning.com/wmopen-nmbiology1/chapter/the-ph-scale/ )

4 0
3 years ago
Living things without a cell
qwelly [4]
Viruses are the only thing considered to be a living thing without cells, as they attach themselves to cells to multiply.

4 0
3 years ago
In an experiment, a small dialysis bag is filled with a 20% salt solution. It is placed in a
Studentka2010 [4]

Answer:

The bag will get smaller

Explanation:

Osmosis can be defined as the process of diffusion or movement of water molecules across a semipermeable membrane from an area of higher concentration of water (i.e., lower concentration solution) to a lower concentration of water. For example, in cells, there are specialized pores called 'aquaporins' which are membrane proteins that form channels to transport water molecules by facilitated diffusion. In this case, the outside of the bag has a higher salt concentration than inside, thereby water molecules will move by facilitated diffusion through pores from inside to outside the bag.

3 0
3 years ago
The BEST use of the food pyramid would be __________.A.to help determine a healthy eating pattern that represents a balanced die
____ [38]

Answer:

Answer is A. to help determine a healthy pattern that represents a balanced diet.

Explanation:

Food pyramid can be described as a triangular representation , that was designed or made in order to make healthy eating or eating a balanced diet  easier.

A balanced diet is a meal that contains all the food nutrients in their correct proportion or amount. The food nutrients include the classes of food which are carbohydrate, protein, fats and oil, vitamins, mineral salts, roughage and water.

The food pyramid is very important , because, it helps in a way of minimizing the intake of fats and sugar.

7 0
2 years ago
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