Cell Cycle/Refresh Quiz

Which BEST explains why DNA replication in the human body is significant?

• it is needed for cell division

• it is necessary for protein synthesis

• it replaces any damaged DNA cells

• it produces RNA strands

When a multicellular organism is damaged, it will repair itself as

• it mutates.

• the cells work together.

• the cells move.

• it makes its own food.

What is the result of mitosis?

• two identical nuclei.

• four unique cells.

• a decrease in genes.

• a new protein.

The cell cycle describes the processes that take place as a cell:

• absorbs proteins.

• makes proteins.

• repairs old cells.

• forms new cells.

The thin, semi-permeable membrane that encloses a cell allows nutrients to enter and wastes to be

• digested.

• recycled.

• protected.

• excreted.

Muscle cells have the ability to store and release large amounts of energy. Which body function is best served by this release of energy?

• exchanging gases.

• moving body parts.

• absorbing nutrients.

• sending nerve impulses.

Match the following

• Mitosis

• D.

• G2

• A.

• Interphase

• I.

• S Phase

• B.

• G1

• C.

Match them, they are numbered left to right:

• Interphase

• 1.

• Telophase

• 4.

• Metaphase

• 5.

• Prophase

• 2.

• Anaphase

• 3.

Tomato hornworms are infesting Jaime’s tomato garden. He designs an investigation to determine if a pesticide or ladybug beetles will control the infestation better. Jaime used six tomato plants. He put hornworm insecticide on three plants, and then released ladybugs into the garden. He observed that the plants with the insecticide had fewer Hornworms than the plants with only ladybug beetles. The second year, Jaime used only insecticide to control Tomato Hornworms, but the treatment was not as effective. How did the design of the investigation make the results different for the second growing year?

• The concentration of insecticide was changed in the second year.

• The growing conditions were better for the tomatoes in the first year.

• The tomato hornworms became resistant to the insecticide in the second year.

• The ladybug beetles helped to control the hornworms in the first year.

Students took two seed-producing plants of the same species, placed one on a screened-in patio, and placed the other on an open patio. The students observed that the plant placed on the open patio produced seeds, while the plant placed on the screened-in porch did not produce any seeds. The students concluded that exposure to the sun impacted the production of seeds. What is another acceptable explanation for the difference in seed production between the two plants?

• The plant on the open patio was pollinated by insects.

• The plant on the screened-in patio received less carbon dioxide.

• The plant on the open patio received morning moisture from dew.

• The plant on the screened-in porch produced spores instead of seeds.