Answer: A
Explanation: Vaccines create memory cells with a weak version of the pathogen, so when they meet that pathogen again the body can respond more quickly and more efficiently since they have already been exposed to the pathogen.
Answer:
50%
Explanation:
CF is a recessive trait. That means that an individual must have two copies of the recessive allele in their genotype in order to express the trait. That means that the parent with CF has genotype cc, while the parent who is heterozygous, and does not express the trait, has genotype Cc. Using a Punnett square to demonstrate the cross of these two parents will produce a probability of 50% heterozygous and 50% positive for CF.
If the tank is a small one and filled with freshwater, an activity performed by a student that is investigating an abiotic factor using the setup would be to record the temperature of the water.
The organ of the rat that serves the same function is the cecum
Rats are strictly herbivores and therefore do not get much animal fat and the gall bladder is not necessary. The cecum is a large, thin-walled, blind pouch shaped looks like a comma, highly constricted at the middle, the rat cecum is different from others rodents as it is devoid of internal septa. It is used as a fermentation chamber. In the cecum there are bacteria that are able to digests the cellulose in the seeds. The food sits in the cecum and essentially rots.
Answer:
retrieval
Explanation:
she had gone over it several times which eliminates rehearsal and storage and that would have encoded it into her brain.