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2012 Q2 mca bio practice
Поширений: 1Har
  • 1. What diagram shows smallest to largest?
A) System-> Organ->Tissue->Cell
B) Cell->Organ ->Tissue->Organ System
C) Cell-> Tissue -> Organ-> Organ System
D) Organ System->Tissue->Cell->Molecule
  • 2. Which of these pairs gives structural support for a human?
A) Skin and blood
B) Brain and nerves
C) Spine and heart
D) Bones and muscles
  • 3. Which three human body systems work together to cause an arm to move?
A) respiratory, muscular, skeletal
B) Skeletal, circulatory, immune
C) Nervous, muscular, skeletal
D) Digestive, nervous, circulatory
  • 4. As a person exercises, carbon dioxide (CO2) levels in the blood increase. This causes the nervous system to signal the ________________systems to respond.
A) Digestive and immune
B) Circulatory and endocrine
C) Immune and respiratory
D) Respiratory and circulatory
  • 5. Why do we give a person a vaccine?
A) To cure a disease.
B) To stimulate and immune response
C) To introduce chemicals that destroy viruses.
D) To prevent inflammation.
  • 6. Which of the following best explains how an enzyme functions in a cell?
A) Enzymes are moved to substrates by the ribosomes
B) One enzyme can catalyze many reactions
C) Enzymes bind to substrates for the catalyzed reactinon
D) Different enzymes are made in different areas of the cytoplasm.
  • 7. A cell from heart muscle would probably have an unusually high number of
A) vacuoles
B) Golgi bodies
C) mitochondria
D) lysosomes
  • 8. Eukaryotic cells are different than prockaryotic cells because eukaryotic cells
A) have a nucleus
B) are much smaller
C) have ribosomes
D) have permeable membranes
  • 9. What is the greatest danger to a patient who has had damage to the skin?
A) Loss of oils produced by the skin
B) Infections in uncovered skin
C) Excessive muscle contractions in the damaged area
  • 10. The main advantage of having hair on a creature is to
A) conserve body heat
B) provide mucus
C) protects skin
D) helps muscles
  • 11. What portion of skin changes color when you get a suntan?
A) Dead Dermis
B) Dermis
C) Subcuatneous layer
D) Epidermis
  • 12. Which of the following is not an accessory organ for the digestive system?
A) liver
B) gall bladder
C) Small intestine
D) pancreas
  • 13. Which organ filters blood that has collected wastes from cells throughout the body and maintains the homeostasis of body fluids?
A) Heart
B) Stomach
C) Kidneys
D) Lungs
  • 14. Where in the body does digestion first take place?
A) The stomach
B) The mouth
C) The Small Intestine
D) the esophagus
  • 15. Where in the body are most nutrients absorbed?
A) large intestine
B) Small intestine
C) stomach
D) mouth
  • 16. Gas exchange occurs in the
A) heart
B) veins
C) capillaries
D) arteries
  • 17. Which of the following structures stores urine before being expelled from the body?
A) ureters
B) urethra
C) Kidneys
D) urinary bladder
  • 18. Which of the following is not a skeletal muscle?
A) Biceps
B) Hamstring
C) Heart
D) Deltoid
  • 19. How does the diagphragm, a muscle under the lungs, change in order for a person to inhale?
A) Flattens and goes lower
B) Flattens and goes up
C) Expands and goes higher
D) Expands and goes lower
  • 20. The thyroid gland regulates which of the following
A) Development
B) Metabolism
C) Growth
D) All of these
  • 21. Sensory neurons can..
A) Carry responses away from the brin and spinal cord
B) Carry impulses from outside and inside the body to the brain and spinal cord
C) Respond to a signal from the central nervous system
D) Process incoming impulses and pass them on to motor neurons
  • 22. What part is part of the peripheral nervous system
A) all of these
B) spinal chord
C) nerves
D) brain
  • 23. Why is blood pumped through the lungs?
A) To get food
B) To oxygenate the blood
C) to hydrate the blood
D) to add Carbon dioxide to the blood
  • 24. Which portion of skin is where a pimple forms?
A) sweat gland
B) subcutaneous layer
C) touch receptor
D) Hair follicle
  • 25. Which of the following will food not pass directly through
A) stomach
B) small intestine
C) esophagus
D) pancreas
  • 26. How do nutrients which are absorbed by the small intestine, travel to the individual cells of the body?
A) small intestine to liver to lymphatic system to body cells
B) small intestine to blood to circulatory system to body cells
C) small intestine to kidneys to dissolved fluids to body cells
D) nerve signals to body cells
  • 27. Why is blood pumped through the lungs?
A) To enrich it with carbon dioxide
B) To give it white blood cells
C) To give it water
D) To enrich it with oxygen
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