science unit quiz questions Flashcards
what term is used to describe the amount of air in a normal inhalation or exhalation
tidal volume
which of the following blood vessels carries deoxygenated blood from the heart to the lungs
pulmonary artery
in which action is the autonomic nervous system engaged
digestion because its an involuntary action
during inhalation, where would you expect to find a higher concentration of oxygen
the alveolar air space
where does blood flow next after being oxygenated in the lungs
pulmonary vein
what is the name of the structure that releases an enzyme that breaks down starch in the mouth
salivary glands
what type of tissue would you find in the heart
cardiac muscles
what is the name of the hormone responsible for male secondary sex characteristics
testosterone
what would result from a decrease in body temperature
blood vessels near the surface of the body would constrict
where are melanocytes found
epidermis
what is an immediate result of the adrenal gland releasing epinephrine into the blood
increase in heart rate
what structure releases insulin and glucagon
the pancreas
what substance is the fluid that contains urea, water, and salts that is released through the urethra
urine
what is a nonspecific barrier for the immune system
mucus because it lines the openings of your body to prevent pathogens from entering.
what disease is caused by a virus that infects T cells?
acquired immune deficiency syndrome (AIDS)
what function is an example of how the skeletal and neuromuscular system work together
body movement
what cell structure contains cristae
mitochondria
what type of microscope uses something other than light to form a specimen image
electron
what microscopic organisms are decomposers and the cause of many skin diseases
fungi
the coefficients in a chemical reaction equation represents the unit
moles
how do you calculate molarity
molarity (M)= moles of solute/ liter of solution
a cup of tea with a volume of 200mL contains 0.02 mol sucrose. what is the molar concentration of sucrose?
M= 0.02 mol / (200mL / 1000)
m= 0.02 mol / 0.2mL = 0.1M
0.1M
what is the purpose of using a control group in an investigation
to establish a standard for data comparison
what instrument would most accurately measure 0.1mL of a liquid
a micropipette
