Answer:
a. a set of proteins involved in innate but not acquired immunity.
Explanation:
The complement system are a set of proteins or protein fragments that play a major role in the innate immune system. The complement system is involved in the defense of the body from foreign pathogen through specific plasma proteins that participate in leukocyte activation, chemotaxis and opsonization. In other words, they increase the ability of phagocytes and antibodies to mop up damaged cells and foreign microorganism, activate inflammation process.
Some of these proteins include complement component 3 (C3), complement component 9 (C9) and C1Q complex.
Out of the following given choices
a) Brooke’s finger accidentally grazes the hot
iron; she immediately yanks her hand away.
<span>
b) After a satisfying evening meal, Callum
relaxes in front of the television.
<span>
<span>c) Walking toward her car is a deserted parking
garage one night, Danica is surprised by a strange man appearing from nowhere.</span>
<span>
<span>d) Emmeline feels queasy as she approaches the
front of the class to give a speech; suddenly, her throat goes dry.</span>
<span>
The answer is B. The
parasympathetic nervous system is part of the autonomic nervous system that
regulates the unconscious actions of the body. The system is regarded as significant in the ‘rest-and-digest’
activity and also the ‘breed-and-feed’. </span></span></span></span>
It is called <span>semiconservative replication.</span>
Answer:
Natural Selection
Explanation:
In natural selection process of evolution, traits that are essential for an individual to be fit enough to survive under environmental stress become dominant.
Since the flowers are of blue or yellow color, it is essential for a bee to be able enough to perceive the blue and yellow color. Hence, the eyes of bee with time have evolved to perceive these two color so that they can pollinate flower.
