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Mathematics
Tech & Engineering
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100
A scientist recorded that temperature and precipitation were highest during July-August and lowest during January-February. Based on these results, this is the range of months when plants grow the fastest.
What is July-August?
100
This device provides the most precise measurement for the volume of a liquid.
What is (A: CORRECT) a beaker or (B: INCORRECT) a ruler
100
Biologists Schleiden and Schwann developed the cell theory which states that all organisms are made of cells and that the cell is the fundamental unit of life. This is an example of research that extended their findings.
What is Virchow determined that all cells come from preexisting cells?
100
Students are performing an experiment to study how colored light affects the rate of photosynthesis in plants. This laboratory tool would be most useful in this experiment.
What is an oxygen sensor?
100
Students will measure 75 mL of water and 5 mL of liquid fertilizer and mix them together. This piece of equipment would be most accurate for measuring the water that the students will need.
What is a 100 mL graduated cylinder?
200
These are the possible genotypes for the offspring of a homozygous dominant father and heterozygous mother.
What is homozygous dominant or heterozygous (AA or Aa)?
200
This is the 4th step in the following design process: 1. Brainstorm design requirements 2. Generate ideas on techniques 3. Evaluate generated ideas
What is (A: CORRECT) selecting an idea to pursue or (B: INCORRECT) building a prototype
200
Students are comparing plant growth with and without fertilizer. All plants will be grown at the same temperature with the same amount of sunlight and water. The growth if each plant will be measured every five days. This component of this experiment would be classified as an independent variable.
What is the growth of the plants?
200
Recent research on extremely primitive bacteria has shown that the bacteria include granules that are able to store a great deal of chemical energy. This type of device could benefit from improvements in this biological technology.
What are batteries?
200
Different types of microscopes are used to gather data for various research applications. This microscope is best for observing and identifying the external features of a fruit fly.
What is a dissecting microscope?
300
This is the probability (as a percentage) that a heterozygous father (Ff) and a homozygous recessive mother (ff) will have a child who inherits a dominant gene (F)
What is 50 percent?
300
This is another benefit of a material used in military ships that can bend sounds waves so that they do not bounce back to a sonar device.
What is (A: CORRECT) reducing internal noise in a building or (B: INCORRECT) reducing energy loss
300
The actual population of Cedar trees is 62 and the actual population of pines is 253. Student 1 counted 60 Cedars and 200 Pines. Student 2 counted 65 Cedars and 252 Pines. This student's count was more accurate.
What is Student 2's count?
300
Gregor Mendel established the foundation of genetics with his findings about dominant and recessive inheritance. This example best represents a direct extension of Mendel's scientific research.
What is Reginald Punnett developed a diagram to predict all possible outcomes of genetic crosses?
300
An amount of water reaches 4 lines away from the 50 mL mark on a graduated cylinder. This is the most accurate measurement of the water volume.
What is 46 mL?
400
This statement correctly describes the relationship between enzymes and chemical reactions.
What is the activation energy decreases with an enzyme?
400
This test group would be most practical for a device that allows a company to monitor the blood pressure of elderly people in their homes.
What is (A: CORRECT) testing elderly people with high blood pressure or (B: INCORRECT) testing elderly people without high blood pressure
400
A study by a group of scientists shows that, beginning in 1950, the global percentage of seafood species has decreased more and more quickly through time. The scientists concluded that all seafood species populations will collapse by the year 2050. This evidence best defends the scientists' conclusion.
What is the data shows a general decrease in seafood populations after 1950?
400
This best describes a well-designed scientific experiment.
What is the hypothesis is based on an observation?
400
A researcher finds that Organism 1 has a net gas output of oxygen, Organisms 2 and 3 have net gas outputs of Carbon Dioxide. This conclusion can best be defended based on this data set (Producer vs. Consumer - Organisms 2 and 3).
What is Organisms 2 and 3 are consumers because they release carbon dioxide?
500
This genotype must result from a cross between a homozygous dominant parent (TT) and a homozygous recessive parent (tt)
What is heterozygous?
500
A group of scientists are working on designing a drug to treat high blood pressure. This experimental design would provide the best results.
What is (A: CORRECT) using ten adult female volunteers selected at random as test subjects or (B: INCORRECT) using one volunteer selected at random as a test subject?
500
A scientist develops a procedure for a carefully controlled investigation. The experiments are repeated several times, and all of the data collected is analyzed and used to form a conclusion. This is the most likely next step the scientist should take to ensure that the conclusion is free of bias.
What is the scientist should have the investigation repeated by an outside research company?
500
A student notices that butterflies in a garden often land on flowers that have white petals. She wants to use this observation to perform a scientific investigation. This is what the student should do next to proceed with her investigation.
What is forming a testable hypothesis?
500
This is why having scientists review their research findings is an important part of research development.
What is allowing other scientists to repeat the research to remove the chance of bias in the findings?