Site-specific recombination systems all of the choices are correct i.e.
A. do not depend on extensive nucleotide sequence homology.
B. depend on enzymes that are often specific for sequences within the host.
C. are features of some viruses.
- An exchange between two specified sequences (target sites), either on the same DNA molecule or on two separate DNA molecules, is known as site-specific recombination.
- DNA sequences may be integrated, excised, or inverted as a result of the exchange.
- A site-specific recombinase that can work by itself or with the aid of additional components or enzymes shapes the DNA target during recombination.
- The recombinase is chemically bonded to the ends of the intermediate DNA after DNA breakage at the recombination site; when this process is reversed, the intermediate DNA is resealed to form the recombinant and the recombinase is released.
- During this recombination process, neither replication nor repair are necessary.
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Here are some examples of symptoms of over-training, any symptom that is given in the choices in your question, is not included to the symptoms of over-training.
First is the Lack of Motivation, wherein individuals lose their rhythm of training due to their lack of motivations or due to his or her excessive training. Second is the feeling of being sore following a big workout, big workouts should not be done many times, instead it should be controlled or sometimes distributed to other days, it could also lead to symptoms such as, Losing one's Grip Strength and Chronic Soreness in one's joints, bones and limbs. Next is becoming restless or the lost of one's focus, too much training removes rest from an individual and he or she may also lose their focus on why they are training, lastly, the feeling of being sluggish all day and becoming sick more often due to excessive training which is because of a sore body or weakness due to training.
Answer:The main functions of polysaccharides are structural support, energy storage, and cellular communication. Examples of polysaccharides include cellulose, chitin, glycogen, starch, and hyaluronic acid.
It is the presence of Protists. "The bacteria
communities seem very stable, but the host and the protozoa gene expression are
changing a lot based on diet, The biology
of termite's with the help from microorganisms called protists, are keys to the
insect's digestion of woody material,
The Correct choice is C
The difference in concentration of materials across a space is called the <u>Concentration</u><u> </u><u>gradient</u> .
