Answer:
Option D, Gastric Juices
Explanation:
The second line of defense is a non specific defense mechanism in which no specific individual is targeted but all invaders are killed in general way. Some common mode of second line of defense are - Phagocytic cells (white blood cells), inflammatory responses, macrophage system etc. The second line of defense comes into action when the invader has surpassed the first line of defense which include either physical barrier like skin, mucous membrane, hair, cilia etc. or chemical barriers like gastric juices, saliva, Hyaluronic acid etc.
Hence, gastric juice does not belong to second line of defense.
Thus, option D is correct.
Answer:
Explanation:
<u>RNA</u> molecule that are produced from the DNA are used by the cells <u>structure </u>to create polypeptides chain. polypeptides chains are linked together of <u>amino acid</u> that form a protein . the macromolecules work together to carry out the <u>function</u> of a liivng organisms
Answer:
d
Explanation:
Neurons and nerve impulses
Answer:
Because it is big compared to an average size shrimp.
Explanation:
The answer is 0.8 second. A cardiac cycle or also known as a
heartbeat approximately takes about 0.8 second to complete one cycle. A
heartbeat is fast since it is a muscle that pumps blood throughout the body.
The Cardiac Cycle has two phases, first the Diastole phase, wherein the heart
ventricles are relaxed, while the heart fills with blood, second is the systole
phase, wherein the ventricles contract and pumps the blood out from the heart
and takes it to the arteries to be
spread all around the body.
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