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100

A laboratory investigation included examining prepared slides of pond water. Single-celled organisms with a nucleus and either cilia or flagella were visible. These organisms probably belong to the kingdom _______. A. Plantae B. Animalia C. Protista D. Fungi

What is c. PROTISTA

100
Cork is a material that is often used to make bottle stoppers and bulletin boards. This material is made from cork oak trees. In 1665, a scientist named Robert Hooke examined a thin slice of cork under a microscope. The slice was made up of many small compartments, which Hooke called cells. What part of cell theory does Hooke's discovery best support? A. All new cells come from pre-existing cells. B. Cells are the basic building blocks of all living organisms. C. Cells contain genetic material that is passed to daughter cells. D. Energy flow, or metabolism, occurs within cells.
What is B. Cells are the basic building blocks of all living organisms.
100
Multicellular eukaryotes that are usually mobile and obtain food from other organisms probably belong to the kingdom A. Animalia. B. Plantae. C. Fungi. D. Protista.
What is A. Animalia.
100
Which cell organelle stores water and other materials? A. lysosome B. Golgi complex C. vacuole D. mitochondrion
What is C. vacuole
100
One biotic factor that affects consumers in an ocean ecosystem is (1) number of autotrophs (2) temperature variation (3) salt content (4) pH of water
What is (1) number of autotrophs
200
Ten different types of culture media were inoculated with the same strain of bacteria and incubated at the same temperature. Nine of the cultures grew. Which of these conclusions can be drawn from this information? A.The media used in the experiment are all capable of sustaining bacterial growth. B.Only the culture that failed to grow bacteria was inoculated properly. C.One of the media lacked the nutrients needed for the bacteria to grow. D.The temperature varied greatly during the experiment.
What is C.One of the media lacked the nutrients needed for the bacteria to grow.
200
The Mute Swan is a species of bird with an orange-reddish bill and white feathers. It is naturally found in Europe and Asia but can sometimes be found in the United States as a result of the importation of these non-native birds. Mute Swans are one of the heaviest flying birds and consume up to 8 pounds of vegetation each day. How will the migration of Mute Swans into an area most likely affect the birds native to that area? A. The native birds and the Mute Swans will coexist peacefully together. B. The native birds will decrease in number because there is not enough food for all the birds. C. The native birds will adapt to consume less food or different types of food. D. The native birds will immediately migrate to another area.
What is B. The native birds will decrease in number because there is not enough food for all the birds.
200
The Earth's carbon cycle consists of the flow, cycling, and recycling of all of the carbon on the Earth. Every living organism's composition includes the element carbon. How does carbon become part of living organisms? A. Producers take in carbon directly from the soil through their roots, and consumers eat the producers. B. Consumers take in carbon dioxide from the air, and producers eat the consumers. C. Producers take in carbon dioxide from the air, and consumers eat the producers. D. Carbon is a part of sunlight and enters through the skins of all organisms.
What is C. Producers take in carbon dioxide from the air, and consumers eat the producers.
200
Enzymes are classified as which of the following biological organic compounds? a. carbohydrates b. lipids c. nucleic acids d. proteins
What is d. proteins
200
some insects can stand on the surface of water because water - a. has a high specific heat b. has a high boiling point c. is a good evaporative coolant d. is cohesive and adhesive
What is d. is cohesive and adhesive
300
Which of the following pieces of equipment would be most appropriate for measuring the volume of a marble? A. a ruler B. a beaker C. a graduated cylinder D. a digital scale
What is C. a graduated cylinder
300
Which of the following statements is true? A.Mitosis results in the formation of two haploid gametes which can then combine to form a diploid daughter cell. B. During the process of meiosis, haploid cells are formed. After fertilization, the diploid number of chromosomes is restored. C. The process of meiosis forms daughter cells which are genetically identical to their parent cells. D.The daughter cells formed during mitosis are genetically similar to, though not identical to, their parent cell.
What is B. During the process of meiosis, haploid cells are formed. After fertilization, the diploid number of chromosomes is restored.
300
Which of the following measurement tools is used to measure mass? A. graduated cylinder B. meter stick C. balance D. thermometer
What is C. balance
300
Water is an example of a molecule whose atoms are held together by which of the following? a. covalent bonds b. ionic bonds c. metallic bonds d. hydrogen bonds
What is a. covalent bonds
300
Which of the following macromolecules are a prominent part of animal tissues that function in insulation, helping animals conserve heat? a. carbohydrates b. lipids c. proteins d. nucleic acids
What is b. lipids
400
Every year, a new influenza vaccine is developed. What is the most likely reason that doctors do not use the same vaccine each year? A. The virus which causes influenza adapts each year to the last vaccine in order to survive and reproduce. B. Any vaccine can only last for a year before it dies. C. The vaccine turns into a new virus that causes a recurrence of the same influenza each year. D. A new, different virus that causes influenza enters the food chain through plants about once every year, infecting humans.
What is A. The virus which causes influenza adapts each year to the last vaccine in order to survive and reproduce.
400
If a cat has 38 chromosomes in each of its body cells, how many chromosomes will be in each daughter cell after mitosis? A. 38 B. 19 C. 11 D. 76
What is A. 38
400
Most organisms can be divided into two categories - prokaryotes and eukaryotes. What is the main difference between these two categories? A. Eukaryotes are living organisms whereas prokaryotes include some nonliving matter. B. Eukaryotes are found in all of the six major taxonomic kingdoms. C. Prokaryotes do not possess a nucleus or any other membrane-bound organelles. D. Prokaryotes do not possess any means of locomotion and are thus unable to move.
What is C. Prokaryotes do not possess a nucleus or any other membrane-bound organelles.
400
Placing wilted lettuce in cold water will make it crisp again. Which statement best describe what happens to restore the lettuce to its original condition? a. water left the lettuce cells by diffusion b. water entered the cells of the lettuce by osmosis. c. osmosis caused salts to enter the lettuce cells. d. salts in the leaf caused water to leave the cells
What is b. water entered the cells of the lettuce by osmosis.
400
Which of these would most likely cause a mutation? a. the placement of ribosomes on the endoplasmic reticulum b. the insertion of a nucleotide into DNA c. the movement of transfer RNA out of the nucleus d. the release of messenger RNA from DNA
What is b. the insertion of a nucleotide into DNA
500
Genetically-modified organisms (GMOs) have included corn crops engineered to produce a natural pesticide to kill a certain insect which would normally destroy the corn. The benefits include a larger corn crop, because the destructive influence of the insects is lowered. What might be one negative result of growing this specific GMO? A. The genetically-modified corn would require more water to produce enough pesticide to fend off the insects. B. The insects could grow resistant to the pesticide in the genetically-modified corn and become immune to regular pesticides. C. All of the insects could disappear, allowing the corn crop to grow too large. D. The natural pesticide could get into the soil and kill the next corn crop.
What is B. The insects could grow resistant to the pesticide in the genetically-modified corn and become immune to regular pesticides.
500
James is homozygous dominant for curly hair (CC), and his wife is heterozygous (Cc). What is the probability that their first child will also be homozygous dominant for curly hair? A. 25% B. 75% C. 0% D. 50%
What is D.50%
500
Atherosclerosis is a condition in which fatty materials accumulate in the arteries and cause their walls to thicken. How does this condition most likely affect blood flow? A. Atherosclerosis increases resistance and decreases blood flow. B. Atherosclerosis increases resistance and increases blood flow. C. Atheroslerosis decreases resistance and increases blood flow. D. Atherosclerosis decreases resistance and decreases blood flow.
What is A. Atherosclerosis increases resistance and decreases blood flow.
500

overheating an enzyme results in the enzyme's loss of- a. net electrical charge b. ability to catalyze a reaction c. storage of a large amount of chemical energy d. storage of inherited information

What is b. ability to catalyze a reaction

500
Years after the lava from an erupting volcano destroyed an area, grasses started to grow in that area. The grasses were gradually replaced by shrubs, evergreen trees, and finally, by a forest that remained for several hundred years. This entire process is an example of (1) feedback (2) ecological succession (3) plant preservation (4) deforestation
What is (2) ecological succession