Human Health & Physiology (SL & HL): Question Preview (ID: 9388)


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How is in vitro fertilization different from natural fertilization in humans?
a) In vitro fertilization involves artificial injection of sperm into the uterus b) In vitro fertilization only involves one parent c) In vitro fertilization happens outside the body d) In vitro fertilization uses stem cells instead of eggs
In what sequence do the hormones reach their maximum level if the cycle begins at the start of menstruation?
a) LH, progesterone, FSH, estrogen b) FSH, progesterone, LH, estrogen c) LH, estrogen, FSH, progesterone d) FSH, estrogen, LH, progesterone
Which muscles contract to cause air to pass out from the lungs through the bronchioles?
a) Internal intercostal muscles and diaphragm b) Internal intercostal muscles and abdomen wall muscles c) External intercostal muscles and diaphragm d) External intercostal muscles and abdomen wall muscles
What name is given to the molecules that bind to foreign proteins that enter the body?
a) antigens b) antibodies c) allergens d) antibiotics
What causes a resting potential to develop in a neuron?
a) Diffusion of sodium and potassium ions b) Active transport of sodium and potassium ions c) Active transport of sodium and diffusion of chloride ions d) Active transport of potassium and diffusion of chloride ions
Which pair of statements correctly describes the concentrations of O2 and CO2 in the lungs?
a) O2 is higher in the capillaries; CO2 is higher in the alveoli b) O2 is lower in the capillaries: CO2 is higher in the alveoli c) O2 is lower in the alveoli; CO2 is higher in the capillaries d) O2 is higher in the alveoli; CO2 is higher in the capillaries
William Harvey discovered that blood flows away from the heart in arteries and back to the heart in veins. What hypothesis could be developed from this discovery?
a) The human body contains both arteries and veins. b) Blood vessels link up arteries to veins. c) How blood moves from arteries to veins. d) Veins are connected to the left side of the heart and arteries to the right side.
Which vessel carries deoxygenated blood?
a) The coronary artery b) The pulmonary artery c) The aorta d) The pulmonary vein
What does the digestion of starch by amylase produce?
a) lactose b) sucrose c) galactose d) maltose
What substance is released into the blood by the pancreas when blood glucose levels are low?
a) glucose b) glucagon c) glycogen d) insulin
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