Which of the following sets of directional terms are most appropriately referred

Question

Which of the following sets of directional terms are most appropriately referred to as opposites? A Distal and proximal B. Medial and inferior c superior and ventral D. Anterior and deep 40. E. Lateral and superior Which of the following elements is NOT a trace element? A. Zinc B. Manganese C. Nitrogen D. Iron 41. E. Fluorine 42. _Eicosanoids A. Are fat-soluble vitamins B. Are components of the plasma membrane C. Are structural proteins D. Play a role in the response of tissues to injuries E. Comprise of genetic material 43. _Which of the following organelles contain hydrolytic enzymes that digest materials? A. Peroxisome B. Mitochondria C. Lysosome D. Proteosome E. Contractile vacuole 44. In a molecule of oxygen, two pairs of electrons are shared by two oxygen atoms. The type of bond that is formed would be an example of a(n) A. Single covalent bond B. Double covalent bond C. Triple covalent bond D. Polar covalent bond E. Hydrogen bond

Explanation / Answer

40. a) DISTAL AND PROXIMAL    ( proximal and distal is always used in reference to relative postions of limbs , proximal refers to something near to the torso and distal refers to something away from the torso )

41. c) NITROGEN

(trace elements are elements whose concentration is very low )   

42. d) play a role in the response of the tissues to injuries ( eicosanoids are formed by oxidation of arachidonic aid )

43. c) LYSOSYME

(hydrolytic enzymes include proteases, nucleases, lipases)

44. b) DOUBLE COVALENT BOND

( two pairs of electrons are shared in double covalent bond)

{hope the answers are clear to you . thank you }

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