WorksheetsBiology STAAR Review #3
Total questions: 16
Worksheet time: 16mins
Which organelle converts sugars into energy?
lysosome
mitochondrion
nucleus
ribosome
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
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.
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
Which of the processes shown below do not use a cell’s energy?
Active Transport
Diffusion
Exocytosis
Cell Division
In which of the following processes is chemical energy converted to mechanical energy?
photosynthesis
a rock rolling down a hill
cellular respiration
muscle contraction
Infer why chloroplasts are found mostly in the leaves of plants.
The large surface area of leaves allows for maximum light absorption.
The waxy coating on the surface of leaves helps prevent evaporation.
Chlorophyll interferes with the xylem and phloem in the stems and trunks of plants.
The large surface area of leaves allows for contact with oxygen.
Which process is an example of asexual reproduction?
An amoeba divides in half to form two amoebas.
A bee transfers pollen from one flower to another.
A female fish deposits eggs on a rock, then a male fish releases sperm on them.
Earthworms exchange sperm.
Which of these is the best explanation of what occurs during the Mitotic phase of the cell cycle?
The cell grows in size.
Identical copies of each chromosome are synthesized.
Cells divide into two identical daughter cells.
Gametes are produced.
Cells spend most of their time in which stage of the cell cycle?
Interphase, because it is a time of growth and DNA replication.
Interphase, because it is a time of cell division.
Mitosis, because it is a time of growth and DNA replication.
Mitosis, because it is a time of cell division
