Regents questions

The shape of a protein molecule directly determines its

• movements through the cytoplasm

• functions inside and outside of cells

• roles in building water molecules

• circulation throughout the body

Tags

NGSS.HS-LS1-1

The diagram below represents a cell and some molecules in its environment. Which molecule would require the use of energy in order to be brought into the cell?

• 1

• 2

• 3

• 4

A strand of DNA in a skin cell contains the bases:

A-T-G-C-C-A-T-C-G-G-T-A

After the cell is exposed to ultraviolet light, the strand contains the bases:

A-T-G-G-C-C-A-T-C-G-G-T-A

Which statement describes the result of this exposure?

• A new base has been inserted.

• A base has been deleted.

• One base has been substituted for another

• There have been no changes in the bases.

Tags

NGSS.MS-LS3-1

After a zygote is formed, specialization of cells occurs. Through which process do the cells of a zygote become specialized?

• sexual reproduction

• meiosis

• fertilization

• differentiation

Tags

NGSS.HS-LS1-4

An ameba, a one-celled organism, can move, ingest, and transport materials within the cell, because it has

• organs

• organelles

• tissues

• systems

Tags

NGSS.MS-LS1-2

In humans, the placenta is essential to the embryo for

• nutrition, excretion, and reproduction

• respiration, nutrition, and excretion

• movement, reproduction, and nutrition

• coordination, movement, and growth

A farmer wanted to rid his apple trees of a particular leaf-eating insect. He sprayed his trees with an insecticide that killed 98% of the insects. The survival of 2% of this population of insects is most likely due to

• genes obtained from another species

• certain chemicals that stimulated overproduction

• variations that resulted from sexual reproduction

• their ability to produce food from the pesticide

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

The paramecium is a single-celled organism that reproduces asexually. The offspring of a paramecium usually contain

• only half of the genes of the parent cells

• more DNA than the parent cell

• genetic material identical to that of the parent cell

• fewer mutations than the parent cell

Tags

NGSS.MS-LS3-2

A dead or weakened pathogen used to establish immunity would most likely be found in

• a pesticide

• an antibiotic

• a vaccine

• a toxin

An individual walks out of his air-conditioned (75°F) home into the hot outside environment (85°F). His ability to adjust to this changing environment involves a mechanism similar to

• the regulation of water loss by guard cells in plant leaves

• the digestion of carbohydrates by enzymes

• using ATP for the diffusion of water

• glucose production in the pancreas