<span>Antibodies. A. k.a. immunoglobulins. They are produced by a group of white blood cells called B lymphocytes (or B cells). There are 5 classes of immunoglobulins; IgM,IgA,IgE,IgG and IgD.The classes of antibody diifferent both in their constant region and in their activity.IgG, the most common antibody, and is found mostly in the blood and tissue fluids, and IgA is localized in the mucous membranes which line the respiratory and gastrointestinal tracts.</span>
Question 6:
D. None of the above
BECAUSE
— In this situation, no use of the immune system (the system that fights off sicknesses) is being used, so we can immediately eliminate A.
— In this situation, no use of the endocrine system (the system that creates hormones) is being used, so we can immediately eliminate B and C.
Question 7:
A. Endocrine, Reproductive, Nervous
BECAUSE
— In this situation, we are definitely using the endocrine system because we are talking about hormones and the endocrine system creates hormones. We can eliminate C because the endocrine system is not included.
— In this situation, we are using the reproductive and nervous system because we talk about the ovaries and testes (reproductive) and the pituitary gland (makes hormones and testosterone) which is part of the brain and the brain is part of the nervous system. We can eliminate B because it doesn’t include these and eliminate D because A is our answer.
Question 8:
D. Integumentary, Circulatory, Immune
BECAUSE
—In this situation, we can eliminate B and C because we are not using the endocrine system (makes hormones)
—In this situation, we can eliminate A because we are not using the nervous system (brain, nerves, spinal cord)
Answer:
hope this is right.
Brine rejection is a process that occurs when salty water freezes. The salts do not fit in crystal structure of water ice, so that salt expelled. Since the oceans are, this process is important in nature. In better understanding, as salt water freezes, the salt is pushed out of solution through channels in the ice. This process is called brine rejection or brine exclusion.
Answer:
Explanation:
A theory is a hypothesis that has been supported with repeated testing. A scientific law is a statement that summarizes the results of many observations. Experimental data must be verified by reproduction from other scientists. Theories must agree with all observations made on the phenomenon under study.