SPT 1 Flashcards
The process which changes food to a simple, soluble form is called
Digestion
Th number of calories in a food indicates
The amount of energy that can be obtained from the food
Sugar and starches are
Carbohydrates
Substances which cause chemical changes in food are calles
Enzymes
An important substance which carries on digest in
Pancreatic juice
The secretion given off by the liver which helps in the digestion of fats is
Bile
The liquid portion of the blood is the
Plasma
The chief function of red blood corpuscles is to
Carry oxygen to cells
The most important function of the white blood corpuscles is to
Destroy harmful bacteria
All body functions of an individual are coordinated by the
Nervous system
By taking the pulse rate, a doctor determines
the heart beat
If a person wishes to find out whether a certain medicine will improve his health, he should….
consult a doctor
Bacteria are the oldest and most abundant organism on earth. The maintenance of life depends on them, since they play a vital role both in productivity and in cycling the substances vital to all other life forms. They are the only organisms capable of fixing atmospheric nitrogen. Virus is a microscopic particle that lives in a cell. By itself, a virus is a lifeless particle that cannot reproduce. But inside a living cell, a virus can multiply hundreds of times. What is smallest thing which can cause disease in humans?
bacterium
Most material are mixtures. They maybe mixtures of elements or mixtures of compounds. Which of the following is a mixture?
water, sea water, carbon dioxide, salt
sea water
Which of the following statement is true?
a. Air can be liquefied
b. All can substances boil at 100 Celsius
c. Water molecule is composed of two atoms of oxygen and one atom of hydrogen.
d. Compounds contain two or more substances that can be separated by physical means.
Air can be liquefied
Dolphins and whales are mammals that live in the sea. Which of the following characteristics is possessed only by mammals?
a. They give birth to their young.
b. They have constant body temperature
c. They have hairless skin, fins and a tail, but no legs.
d. They feed their young on milk with mammary glands.
d. They feed their young on milk with mammary glands.
Which of the following organisms is cold blooded with a dry scaly skin?
lizard, frog, earthworm, whales
lizard
The food-making process in green plants is called…
photosynthesis
Plants are capable of making own food by photosynthesis. Which of the following is true about photosynthesis?
a. The rate of photosynthesis is affected by the concentration of carbon dioxide
b. Photosynthesis uses up oxygen
c. During photosynthesis glucose and carbon dioxide are produced.
d. Photosynthesis also occurs at night.
a. The rate of photosynthesis is affected by the concentration of carbon dioxide
White blood cells, the skin, and antibodies are similar because they
protect the body against certain harmful organisms.
A magnet is metallic substance capable of attracting iron and certain other metals. Metal cans, such as those used to pack can be attracted by magnet because the can is made chiefly of…
tin
If the S-pole of a bar magnet is brought near the N-pole of another bar magnet, the magnets will
attract each other
Magnet lines of force can be demonstrated with a magnet and
iron fillings
A dry cell is safe to use in an experimental because it has a low voltage. The metallic case of a dry cell is made of
zinc
If the removal of one lamp from a string of Christmas tree lights will cause the rest of the lamp to go out, the lamps are connected
in series circuits
