Science Regents question review 12/20

Which statement best describes what would most likely be observed after 20 minutes A. The contents of the dialysis tube would turn black blue B. The liquid in the beaker would turn blue black C. The dialysis tube would burst

the liquid in the tube would turn black blue

Molecules 1 and 2 are most likely

Carbon dioxide and water

In which cell organelle do the reactions that belong to areas b and C occur ?

Chloroplast

The diagram represents a model of a biological process that occurs in humans at normal body temperature 37c Increasing body temperature to 40 c would interfere most directly with the rate of function of structure

A ( the enzyme) (not the substrate)

There are 2000 kinds of edible insects in the world and they are becoming an increasingly popular source of protein. One cup of cricket flour contains over 28 grams of protein. The building blocks of the protein in cricket flour are

Amino acids

Hydrogen peroxide is toxic a toxic byproduct of cellular metabolism in aerobic organisms. The reaction below occurs within the cells to prevent the accumulation of hydrogen peroxide 2H2O2 ————>catalase —> 2H2O+ O2 In this reaction catalase functions as an

An enzyme in the breakdown of hydrogen peroxide

Bromthymol blue turns yellow in the presence of carbon dioxide. This characteristic makes it possible for bromthynol blue to function

An indicator

Which organic compound is produced when three fatty acid molecules bond to one glycerol molecules

A lipid

A biological process that occurs in both plants and animals is shown below A + B ——C——> atp + D + H2O

A- glucose B- oxygen C- enzymes D- CO 2 a

The diagram represents a cell I. The human body. Which statement concerning the structures within the cell is accurate? A. Structure 1 is a chloroplast that carries out photosynthesis B. Structure 2 is a vacuole that contains DNA C. Structure 3 is a mitochondria where respiration takes place D. Structure 4 is the cell membrane , which provides a rigid support for the cell

C. Structure 3 is the mitochondria where respiration takes place

The energy used to obtain, transfer, and transport materials within an organism comes directly from

ATP

A substance is most likely to diffuse into a cell when A. It is a large organic food molecule such as protein or starch B. It is enclosed in an organelle such as a vacuole C. The concentration of the substance is greater outside the cell than inside D. The PH of the substance is greater than the PH of the cell

C the concentration of the substance is greater than the PH of the cell

Two biological processes that occur in certain organelles are represented in The diagram ( see diagram process x and Y) Which statement is correct regarding the types of organisms able to carry out these processes? A.Process x occurs in heterotrophs but not autotrophs B.Process y occurs in consumers but not producers C. Both processes x and y occur in all living things D. Both processes x and y occur in green plants

D both process x ( photosynthesis ) and Y ( cellular respiration) occur in green plants

Within a cell of an Elodea plant, the chloroplasts move primarily as a result of

Cyclosis

An energy-rich organic compound needed by organisms is

Glucose

Molecules 1 and 2 enter the cell and glucose leaves the cell by a process called

Diffusion

This diagram represents abs experimental setup ( picture of starch indicator, dialysis tube , starch solution ) Which term correctly identifies the process by which molecules move through the dialysis tube membrane?

Diffusion

Water is classified as an inorganic compound because it

Does not contain carbon

Many disorders are due to the inability to break down a particular chemical. Sometimes these disorders can be treated by giving the affected individual the appropriate

Enzymes

Which substance is a suitable indicator for detecting the presence of starch in a plant cell.

Iodine solution

which statement best describes a function of glucose in plant cells? A. It is converted into solar energy in the chloroplast B. It can be used directly as a building block in protein synthesis C. It can be used during the digestion of fats D . It is used during cellular respiration. In the mitochondria

It is used during cellular respiration in the mitochondria (D)

Most reactions by which energy from carbohydrates is released for use by the cell take place within the

Mitochondria

Proteins, starch and DNA are similar in that they are all

Organic compounds

The gas that was being produced was most likely

Oxygen as a process of photosynthesis

( picture of test tubes on a burner) This setup would most likely. Be involved in a procedure to

Test for the presence of glucose using an indicator

Which class of molecules is responsible for speeding up chemical reactions?

enzymes