What is the aqueous humor? A. one of the fluids in the inner ear B. the fluid th

Question

What is the aqueous humor? A. one of the fluids in the inner ear B. the fluid that surrounds the ossicles of the middle ear C. the fluid in the eye between the cornea and the lens D. the fluid in the eye between the retina and the lens E. the gel-like material in the semicircular canals Arm muscles and leg muscles are arranged in antagonistic pairs. How does this affect their functioning? A. it provides a backup if one of the muscles in injured B. one muscle of the pair pushes while the other C. a single motor neuron can control both of them D. it allows the muscles to produce opposing movements E. it doubles the strength of contraction The virus that causes AIDS A. attacks B. can be transmitted through donated blood C. attacks helper T cells D. all of the above are true E. both B and C which of these is the process by which changes occur in the characteristics of species over time? A. evolution B. fossilization C. embryology D. homeostasis E. both B and C Which of these pairs is mismatched? A. testis-testosterone production B. testis sperm production C. vas deferens seminal fluid production D. urethra conducts sperm Which of these blood cells are phagocyte? A, erythrocytes B. neutrophils C. monocytes D. lymphocytes E. both B and C Cells that do NOT produce cell walls are: A. animal cells B. plant cells C. fungi D. both A and C

Explanation / Answer

54) answer-aqueous humor C) fluid in the eye between cornea and the lens.

* vitreous humor is between retina and lens .

Perilymph and endolymph is the fluid in inner ear.

55) answer - D) it allows muscles to produce opposing movements.

*In antagonistic muscle pairs , agonist muscle contracts and the antagonist muscle relaxes hence producing opposing movements.

56)answer -E) both b and c.

* the human immunodeficiency virus attacks only the t helper cells and this virus is transmitted by exposure to infected body fluids and hence by blood tranfusion.

57)answer -A)evolution

*fossilization is the process of fossilizing a plant or animal that existed in some earlier age .Embryology is the study of embryos and their development. Homeostasis is the tendency of biological systems to maintain relatively constant conditions in the internal environment while continuously interacting with and adjusting to changes within and outside the the system .

58)answer -C) vas deferens -semenal fluid production

*vas deferens function is to transport sperm from epididymis to ejaculatory duct. .

59)answer-E) both b and c

*neutrophils ,monocytes ,dendritic cells,mast cells and macrophages are phagocytic cells.

60)answer -A) animal cells.

* plant cells and fungi have cell wall.

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