Biology STAAR Review #3

Which organelle converts sugars into energy?

• lysosome

• mitochondrion

• nucleus

• ribosome

Tags

NGSS.MS-LS1-7

At what point in the process of diffusion is equilibrium reached?

• when the movement of the molecules stops being random

• when the molecules are mixed and stop moving

• when the rate of change in the solution slows by one half

• when there is continuous movement but no change

What is a major difference between facilitated diffusion and active transport?

• Active transport moves substances against the concentration gradient.

• Active transport uses proteins in the process.

• Facilitated diffusion moves molecules through the plasma membrane.

• Facilitated diffusion requires large amounts of energy.

A teacher wishes to use two simple objects to demonstrate the relative sizes of a typical virus and bacterial cell. Which two objects should the teacher use for this demonstration?

• nickel and quarter

• marble and basketball

• baseball and softball

• marble and football field

Which describes most types of viruses?

• a small, solid ball of infectious protein

• genetic material wrapped in a protein coat

• primitive type of bacteria cell

• the smallest type of living cell

Which of the following kinds of cells perform basic functions such as obtaining energy from food?

• II only

• I, II, & III

• I, III, & IV

• I, II, III, & IV

Tags

NGSS.MS-LS1-7

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Which of these describes a difference between viruses and cells?

• Cells contain protein, and viruses contain only carbohydrates.

• Viruses have flagella, and cells have only cilia.

• Cell reproduce independently, and viruses require a host to reproduce.

• Viruses have membranes made of proteins, and cells have membranes made of nucleic acids.

In the 1880’s, Louis Pasteur developed a method of weakening viruses. The weakened viruses could be injected into healthy individuals. How is this method effective in fighting viral diseases?

• The immune system develops antibodies in response to the weakened viruses.

• The weakened viruses attach to unaffected viruses in the host and interrupt the viral reproductive cycle.

• The rate of genetic mutation in the host is decreased due to the introduction of weakened viruses.

• Weakened viruses are unable to enter the host organism.

Which statement accurately describes the role of key organelles in energy transfer?

• Energy is captured and stored in the nucleus and released in the chloroplast.

• Energy is captured and stored in the nucleus and released in the mitochondria.

• Energy is captured and stored in the chloroplast and released in the mitochondria.

• Energy is captured and stored in the mitochondria and released in the chloroplast.

Tags

NGSS.MS-LS1-2

The leaves of green plants contain openings known as stomata. A plant opens and closes its stomata to exchange gases between the plant and the surrounding environment. Which of the following is most likely to occur when a plant's stomata open?

• Oxygen is taken in and nitrogen is expelled

• Ozone is taken in and carbon dioxide is expelled

• Carbon dioxide is taken in and oxygen is expelled

• Carbon dioxide is taken in and ozone is expelled

Tags

NGSS.MS-LS1-6