Louisiana Benchmark Biology

What is NOT an example of qualitative data?

• The names of chemicals found in a breakfast cereal

• Types of shoes worn by pedestrians on a city street

• The zip codes in which each high school student resides

• The average high daily temperature for the month of July

“The insect in Container B has six appendages” is an example of what type of scientific observation?

• Quantitative

• Inference

• Qualitative

• Hypothesis

Which procedure describes the best method of obtaining the accurate mass of a sample in the laboratory?

• Obtain the mass using a balance, remove the sample, re-zero or tare the balance and then weight the sample a second time.

• Use two difference balances to obtain the mass of the sample and average the two masses together.

• Check the balance for accuracy using a standard of known weight and then weighing the sample three times on the balance, and use the average of the three masses.

• Check the balance for accuracy using a standard of known weight and then weighing the sample on the balance.

Measurements gathered from observing a pea plant grow 5 cm over a three week period will result in the collection of —-----

• hypotheses

• conclusions

• inferences

• data

A scientist is conducting research on mealworms. Which of the following pieces of equipment should be used by the scientist to determine the mass of each mealworm?

• Beaker

• Ruler

• Electronic balance

• Graduated cylinder

The instruments shown would be used to observe the —

• external organs of a frog

• skin texture of a frog in a marine environment

• life cycle of a frog

• internal organs of a frog

(TWO ANSWERS) A biologist wants to investigate how fertilizers with different amounts of nitrogen influence the pollen production of flowers. Select the types of data the biologist should collect.

• The volume of pollen produced by each flower

• Concentration of nitrogen in the different fertilizers

• Amount of rainfall during the study period

• The number of seeds produced by each flower

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A hypothesis is —

• a possible explanation of an observation that can be tested

• a proven statement

• a conclusive statement

• a definite answer to a possible problem

A hypothesis is a statement made by a scientist and —

• is always true

• is usually true

• can be tested

• is the same as a theory

Tags

NGSS.MS-LS1-5

A sample of mice are divided into two groups for an experiment. One group is fed a normal diet and the second group is given the same diet with extra iron. The animals receiving the normal diet are healthy; the animals in the second group are weaker and sickly. What is a possible hypothesis concerning this experiment?

• Extra calories in the diet has a negative effect on the health of mice.

• Extra iron in the diet has a negative effect on the health of mice.

• Living in small groups has a negative effect on the health of mice.

• Lack of sufficient water has a negative effect on the health of mice.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1