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Nature of Science
Cell Structure and Function
Energy Conversion
Mitosis and Meiosis
Plant Structure and Reproduction
100
Which is true about a dependent variable in an experiment? a. It is manipulated by a scientist. b. It never changes during the experiment. c. It is not affected by the independent variable. d. It is the experimental data.
What is d. It is the experimental data.
100
A cell requires energy to move materials from an area of low concentration, across the cell membrane, to an area of high concentration. This process is called a. facilitated diffusion b. active transport c. passive transport d. osmosis
What is b. active transport
100
What function does ATP carry out in living things? a. identifies DNA start sequences for transcription b. used to capture and transfer energy c. aids in protein folding and coiling d. helps maintain the fluidity of cell membranes
What is b. used to capture and transfer energy
100
Stem cells are important to multicellular organisms because of their a. potential to become totipotent. b. tendency to maintain homeostasis. c. capacity to differentiate. d. ability to relocate.
What is c. capacity to differentiate.
100
What is the function of collenchyma cells? a. to transport materials through long strands b. to store starch, oils, and water for the plant c. to connect different types of cells d. to provide support while allowing the plant to grow
What is d. to provide support while allowing the plant to grow
200
In a compound microscope, the magnification of the eyepiece is 10x, and a student is using the objective with a 40x magnification to view a preserved specimen slide. The object being viewed will be magnified ______ times? a. 400x b. 30x c. 40x d. 50x
What is a. 400x
200
Animal cells and Plant cells have many organelles in common. They also have organelles that are specific to each one of them. Which of the following statements does NOT correctly describe the common structural features of an animal secretory cell and photosynthetic cell? a. both cells have mitochondria b. both cells have golgi apparatus c. both cells have chloroplasts d. both cells have a plasma membrane
What is c. both cells have chloroplasts
200
In which way are photosynthesis and cellular respiration different? a. Photosynthesis releases energy, while cellular respiration stores energy. b. Cellular respiration stores ATP, while photosynthesis releases ATP. c. Cellular respiration produces oxygen, while photosynthesis uses oxygen. d. Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
What is d. Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
200
Which of the following phrases best describes cancer? a. absence of cyclins in the DNA b. presence of genetic defects caused by hereditary disorders c. uncontrolled cell growth caused by mutations in genes that control the cell cycle d. miltiple gene mutations on a chromosome of DNA
What is c. uncontrolled cell growth caused by mutations in genes that control the cell cycle
200
What is the endosperm? a. an egg that has been fertilized by a sperm b. a male gametophyte c. a female gametophyte d. a food supply for a developing plant embryo
What is d. a food supply for a developing plant embryo
300
Which statement best describes a scientific theory? a. It is an educated guess. b. It is an explanation that is well supported by many scientfic observations c. It is a collection of data. d. It is a scientific fact that has been proven.
What is b. It is an explanation that is well supported by many scientfic observations
300
Which cell type would contain the greatest number of mitochondria? a. A muscle cell in the leg muscle of a runner. b. A cell of the stomach lining that manufacturers digestive enzymes. c. A nerve cell that transmit signals to the brain stem. d. A red blood cell that transports oxygen.
What is a. A muscle cell in the leg muscle of a runner.
300
Which statement describes evidence of cellular respiration? a. Anaerobic respiration releases water as a gas. b. Aerobic respiration converts food to water and oxygen. c. Oxygen is given off as a gas from the mitochondria. d. Water vapor is given off as a gas from the mitochondria.
What is d. Water vapor is given off as a gas from the mitochondria.
300
What is the main difference between binary fission and mitosis? a. There is no DNA replication in binary fission. b. Two parents are required for mitotic reproduction. c. Mitosis takes place only in sexual reproduction. d. Binary fission occurs in single-celled organisms only.
What is d. Binary fission occurs in single-celled organisms only.
300
The cambium is a section of cells in a plant that can become either part of the xylem or phloem, depending on the growth and needs of the plant. If the cambium of a particular plant was damaged, what would be the most likely effect on the plant? a. The plant would not be able to transport nutrients and water. b. The plant would not experience any change in physiology. c. The plant would have uncontrolled growth. d. The plant would lose its ability to carry out photosynthesis.
What is a. The plant would not be able to transport nutrients and water.
400
A student constructs several terrariums (aquariums for land). Each terrarium is exposed to a different amount of sunlight each day. In order to determine the ideal amount of sunlight, which of the following variables must be held constant? a. Wavelengths of sunlight b. Amount of sunlight received. c. Growth rate of plants d. Type of plants
What is d. Type of plants
400
Glucose is not able to pass through a semi-permeable cell membrane. If the cells need sugar to make ATP and carry out cellular processes, how does the sugar get into the cell? a. passive transport by diffusion b. active transport using ATP and carrier proteins c. phagocytosis d. passive transport by osmosis
What is b. active transport using ATP and carrier proteins
400
Students in a biology class have been studying photosynthesis. They are designing experiments using factors that affect the rate of photosynthesis as their variables in the experiments. One of the lab teams wants to investigate light independent reactions of photosynthesis. Which conclusion would be appropriate for their experiments? a. The greater the amount of water consumed, the greater the rate of the light independent reactions. b. The greater the amount of ATP produced, the greater the rate of light independent reactions. c. The greater the amount of oxygen being produced, the greater the rate of the light independent reactions. d. The greater the amount of carbon dioxide consumed, the greater the rate of the light independent reactions.
What is d. The greater the amount of carbon dioxide consumed, the greater the rate of the light independent reactions.
400
During interphase a cell grows, duplicates organelles, and a. divides the nucleus. b. divides the cytoplasm. c. copies DNA. d. produces a new cell.
What is c. copies DNA.
400
Parts of a mature gametophyte produce gametes through the process of a. meiosis. b. mitosis. c. alternation of generations. d. fertilization.
What is b. mitosis.
500
Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge? a. All living things are made of cells. b. Cells are the basic structural and functional units of life. c. All cells come from other preexisting cells. d. Cells form through spontaneous generation
What is d. Cells form through spontaneous generation
500
A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred? a. The water in the gums has moved out due to the high concentration of salt in the solution. b. The salt in the solution has moved against the concentration gradient. c. The saltwater solution lowers the temperature of the water in the gums. d. The swollen gums have absorbed the saltwater solution.
What is a. The water in the gums has moved out due to the high concentration of salt in the solution.
500
A student athlete on the track and field team told his friends that he had experienced oxygen debt (loss) near the end of his longest run in the last competition. How is oxygen debt explained in metabolic terms? a. Without enough oxygen, muscle cells will utilize lactic acid fermentation to synthesize 2 ATP molecules. b. without enough oxygen, muscle cells will utilize aerobic respiration to synthesize 36 ATP molecules. c. Without enough oxygen, muscle cells will utilize aerobic respiration to synthesize sugar to provide energy. d. Without enough oxygen, muscle cells will utilize anaerobic respiration to convert lactic acid to oxygen.
What is a. Without enough oxygen, muscle cells will utilize lactic acid fermentation to synthesize 2 ATP molecules.
500
The cell cycle is a repeating sequence of cellular growth and division during the life of an organism. Which of the following is not a true statement concerning cell division of body cells? a. cells divide in order to repair themselves when damaged. b. cell divide when the parent cell gets too big c. cells divide in order to maintain homeostasis d. cells divide in a process called meiosis
What is d. cells divide in a process called meiosis
500
Terrestrial plants have stomata on the surface of their leaves. A single stomata is surrounded by two guard cells that change shape in response to environmental factors and open or close the stoma. Which of the following best explains how the structure of the leaf is used in processes that occur in plants? a. Carbon dioxide enters the plant through the surface of the leaf for cellular reproduction. b. Water enters the plant through the surface of the leaf for transpiration c. Gases for photosynthesis are exchanged through the surface of the leaf. d. Energy for cellular reproduction is absorbed through the surface of the leaf.
What is c. Gases for photosynthesis are exchanged through the surface of the leaf.