Which of these are primary lymphatic organs (organs in which blood cells are produced or mature)?
A) lymph nodes
B) tonsils
C) RED BONE MARROW
D) THYMUS GLAND
E) spleen
Answer:
C) RED BONE MARROW
D) THYMUS GLAND
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During cell crawling, the cell must attach to the substrate upon which it is crawling. One group of attachment proteins is the ________.
A) actins B) actomyosins C) creatines D) integrins E) titins
Aside from HIV infections, the greatest number of global disease-related deaths result from
1.diarrheas. 2.various respiratory infections. 3.hepatitis. 4.malaria. 5.tuberculosis.
vitamin responsible for synthesis of nucleic acids
What will be an ideal response?
Of the items listed, which is the smallest that you can see with the unaided eye?
A) Frog embryo B) Ribosomes C) DNA molecule D) Human skin cell E) Virus