WorksheetsPhotosynthesis Regents questions
Total questions: 26
Worksheet time: 17mins
scientists who study rock formations in caves describe some of the formations as "living rock." Which statement best disputes this claim?
rocks are not composed of cells, while living organisms are
rocks perform complex metabolic tasks, but cannot grow
rocks cannot reproduce sexually
rocks remain stable in a variety of conditions
organic compounds are used as building blocks for
water, DNA and starches
water, protein and oxygen
proteins, DNA and carbon dioxide
proteins, starches and fats
fat molecules typically contain long chains of carbon atoms. It is an advantage for animals to store fats for when food is scarce because
much energy can be gained by breaking the bonds between atoms in fats
fats give off carbon dioxide which can be used by the muscles
amino acids from fat synthesis are more easily digested than carbohydrates
energy can only be created by digesting fats
A student notices pairs of cells with an opening on the bottom of a leaf while looking it under the microscope. The main purpose of these openings and the cells around them is
removing excess sugars
synthesis of carbon dioxide
regulating gas exchange
purification of water
a student is running an experiment to see the effects of temperature on photosynthesis in corn plants. Which tool is correctly paired with a procedure needed for this experiment?
an electronic balance to measure the volume of soil for the corn plants
a Celsius thermometer to determine the pH of the soil
a metric ruler to determine the mass of the plant each week
a graduated cylinder to measure 30mL of water for each plant daily
a student placed a test tube containing a plant near a light source. He then counted the number of bubbles released by the plant in 1 minute. The gas that was produced was most likely
carbon dioxide
oxygen
nitrogen
all of these
the major role of carbohydrates in teh human diet is to
form the membranes that surround mitochondria
act as a catalyst for cellular reactions
supply energy for the body
provide building blocks for amino acids
which process must 1st take place in order for the proteins in foods to be used by body cells?
digestion
storage
synthesis
excretion
the level of carbon dioxide in our atmosphere has been increasing dramatically. It has been said that growing green plants would help slow this increase. The best explanation for this is that plants
serve as food for herbivores
serve as a nonrenewable resource
remove carbon dioxide from the atmosphere during respiration
remove carbon dioxide from the atmosphere during photosynthesis
a student is viewing a plant stem cross section using a compound light microscope. To bring the image into focus, the student should us
A and F
C and D
B and E
D and F
the 2 diagrams represent a sugar molecule and a fat molecule that are used by living organisms. Which statement best describes these 2 molecules?
sugar molecules are inorganic and fat molecules are organic
sugar molecules are organic and fat molecules are inorganic
energy for life process can be stored in the chemical bonds of both molecules
energy for life processes can be stored wihin the chemical bonds on sugar molecules only
which group of materials would be most useful to students preparing to separate a mixture of leaf pigments using paper chromatography?
filter paper, solvent, dropper and beaker
enzymes, beaker, goggles, compound microscope
compound microscope, filter paper, cover slip, glass slide
meterstick, thermometer, solvent, enzymes
over time, a tree that once had a total mass of 300g increased in mass to 3000 kg. This increase in mass comes mostly from
soil that all plants need to grow
oxygen that enters through the leaf openings
chloroplasts that enter the roots and move to the leaves
carbon dioxide that enters through the leaf openings
