Active transport is the movement of molecules or ions against a concentration gradient. Passive transport is the movement of molecules or ions from an area of higher to lower concentration.
Passive transport does NOT require energy
-Diffusion - small uncharged molecules
-Osmosis - water
-Facilitated diffusion - glucose
Active transport REQUIRES energy
-Ion pumps
-Endocytosis
-Exocytosis
Answer:
The correct answer is: Spontaneous Recovery
Explanation:
Spontaneous Recovery refers to the phenomenon of reemergence of a response that was previously extinguished after a period of non-exposure. This concept involves learning and memory and was proposed by the Russian physiologist, Ivan Petrovich Pavlov.
This phenomenon is associated or connected with the learning procedure, known as the classical conditioning.
<u>Therefore, in the given situation the reemergence of good feelings triggered by cologne is an example of </u><u>Spontaneous Recovery.</u>
The short answer is: The scientist means that a dose of 20 mg per kilogram is enough to kill one half or fity percent of the animals used in the test. LD stands for leathal doseage. The 50 means 50 percent. Subsequently a dose of 20 mg per killogram has a lethal dose that will kill 50% of the test subjects.
Answer:
Lysozyme is an enzyme that breaks down bacterial cell walls and is found in your tears, mucus, and saliva. A mutation occurs in the gene for lysozyme that results in a lysine (a positively charged amino acid) being substituted for an arginine (also a positively charged amino acid). Do you think that the mutant lysozyme will function similarly to the normal lysozyme?
No, because all changes in protein primary sequence result in functional differences
Explanation:
Protein sequence are known to be complimentary to each other, slight changes or sudden changes would affect the function as well as those work in antagonizing way with one another.
