A type of lymphocyte called NK cell detects cells with abnormal surface proteins and kills them.
<h3>What are lymphocytes?</h3>
One variety of white blood cell is the lymphocyte. They are crucial to the functioning of your immune system, which aids in the body's defense against sickness and infection. An extensive network of immune cells, lymph nodes, lymph tissue, and lymphatic organs makes up your immune system. Immune cells include lymphocytes. The two primary categories of lymphocytes are:
T lymphocytes (T cells): T cells direct your body's immune response and actively hunt down and destroy cancerous and infected cells.
B cells, or B lymphocytes: The B cell produces antibodies. Proteins called antibodies hunt down viruses, bacteria, and other foreign invaders.
Your body's immune system uses lymphocytes to combat cancer and invading viruses and germs (antigens). Your immune system benefits from lymphocytes' assistance in retaining every antigen it encounters. Some lymphocytes develop into memory cells after an encounter. Memory cells detect an antigen and reactbwhen they come into contact with it again. You don't contract illnesses like measles or chickenpox repeatedly because of this. Additionally, it explains why some diseases can be avoided through vaccination.
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Answer/Explanation:
First, initiator protein unwinds a short stretch of the DNA double helix. <u>The length of the DNA double helix about to be copied must be unwound. </u> In addition, the two strands must be separated, much like the two sides of a zipper, by breaking the weak hydrogen bonds that link the paired bases. Once the DNA strands have been unwound, they must be held apart to expose the bases so that new nucleotide partners can hydrogen-bond to them. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.
There are four symptoms of addiction namely:
Obsession
Negative consequences
Lack of control
Denial
In this patient, he denies that his behavior is self-destructive; even with the concrete evidence that he is being self-destructive (i.e. plays all day even with work to do). There are two descriptions of denial wherein; (1) he denies that what he does cannot be controlled and (2) he denies that what he does leaves a negative impact in his life. This patient falls to the latter description of denial.
1) When a person can feel their vehicle's side-to-side balance it is called a roll.
2) A humans visual system consists of the retina, brain, and the optic nerve.
The answer is option 4 :3
