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balandron [24]
3 years ago
15

How many factors should a well-designed experiment test at one time?

Biology
1 answer:
LuckyWell [14K]3 years ago
3 0
Only 1- the experiment can not show a cause and effect relationship if there are more than one factors contributing to the outcome.
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Need help will give brainliest
Vinil7 [7]

Answer: 1. The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone.

2. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.

3. The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.

Explanation: Hope this was helpful! :)

3 0
3 years ago
If the concentration of salt in the fluid surrounding cells decreases and the concentration of other solutes remains constant?
svetoff [14.1K]

Answer:

The cell will swell.

Explanation:

The cells react distinctly when placed in different solutions like hypertonic, isotonic and hypotonic solutions. In the mentioned question, that is, in the fluid surrounding the cells, the concentration of salt reduces, which makes the solution hypotonic. Hypotonic solution exhibit high water potential and low solute concentration.  

This makes the water move from the hypotonic solution to the inside of the cell as the osmotic movement occurs from high solvent concentration to low solvent concentration, thus, swelling of the cell takes place.  

7 0
4 years ago
What would happen to the seasons if the tilt were less than 23.5 degrees and what if it was greater
dedylja [7]
It's hard to explain but it would like, be less wild than the seasons we have today.
6 0
4 years ago
did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?
Orlov [11]

I did not, and I love bees! (:

7 0
4 years ago
Define the following
asambeis [7]

Explanation:

A. Shine-Dalgarno Sequence:

  • This is a binding site found in the messenger RNA (mRNA) in prokaryotic organisms. It is found upstream of the start codon AUG and aids in the initiation of  protein synthesis

B. SRP:

  • Signal Recognition Protein (SRP). This acts by binding to the bacterial ribosome, which as a result restricts protein synthesis.

C. NLS:

  • Nuclear Localisation Signal is a short amino acid sequence, which is responsible for transporting proteins from the cell cytoplasm into the nucleus. The NLS is also responsible for the development of the nuclear envelope of the cell.

D. Ubiquitin:

  • Found predominately in Eukaryota, the ubiquitin is a protein that aids in the control of other proteins within the organism.

E. Specificity Factor:

  • Also known as the sigma factor, is responsible for the initiation of bacterial transcription. It is recycled during the transcription process and is only required at the initiation of transcription.

F. CRP:

  • cAMP Receptor Protein (CRP) is involved in catabolite (glucose) repression and serves as an inducer in the process.

6 0
3 years ago
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