Photosynthesis Regents questions

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

Tags

NGSS.MS-LS1-1

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

Tags

NGSS.MS-LS1-7

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

Tags

NGSS.MS-LS1-6

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

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

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

Tags

NGSS.MS-LS1-6

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

Tags

NGSS.MS-LS1-7

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

Tags

NGSS.MS-LS1-6

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