The 4 State Labs Worksheet (Biochemistry/Enzymes)

Base on your answer to question on the results of an experiment using plant pigments represented below and on your knowledge of biology.

• using indicators to determine pH

• using dichotomous keys to identify plants

• the use of cut leaves to observe certain colors

• the use of chromatography to separate molecules in a mixture

Base your answers to questions 2 and 3 on the information and diagram below and on your knowledge of biology.

Average beak sizes of the seed-eating medium ground finch on one of the Galapagos Islands are shown in the diagram below. During wet years, all types of... (diagram and further text not fully visible)

• The average beak size of the medium ground finch changes depending on environmental conditions.

• The average beak size of the medium ground finch remains constant regardless of environmental conditions.

• The average beak size of the medium ground finch only increases over time.

• The average beak size of the medium ground finch only decreases over time.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

What is the most likely reason for the change observed in the red onion cells after adding salt water?

• Osmosis caused water to leave the cells, making them shrink.

• Salt water caused the cells to divide rapidly.

• Salt water increased the size of the vacuole.

• Salt water made the cell wall dissolve.

Tags

NGSS.MS-LS1-5

1. After rinsing red onion cells with distilled water for several minutes, how should the contents of the cells appear in diagram B?

• The cell contents will swell and press against the cell wall.

• The cell contents will shrink away from the cell wall.

• The cell contents will remain unchanged.

• The cell will burst open.

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NGSS.MS-LS1-2

NGSS.MS-LS1-5

How would the introduction of another species of seed-eating ground finch to the island most likely influence the medium ground finch?

• The finches would not compete, since they both eat seeds.

• The medium ground finch would become a parasite of the introduced species.

• The finches would interbreed and produce a new species of finch.

• The medium ground finch would face increased competition for seeds.

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NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

How might an extended period of drought influence the ground finch population?

• Drought decreases seed availability, but has no influence on the ground finch.

• Drought increases seed availability, and all ground finches would be more numerous.

• The birds with larger beaks would be more numerous.

• The birds with smaller beaks would be more numerous.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS4-4

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after exercise. The dependent variable for this experiment is the

• strength of the student

• time the student was squeezing the clothespin

• number of times the student was able to squeeze the clothespin

• length of the clothespin

The experimental results could be made more valid by

• increasing the number of students

• using safety precautions

• making a bar graph of the data

• using a plastic clothespin

What is the purpose of the artificial cell in this experiment?

• To act as a control in the experiment

• To simulate a biological cell for studying diffusion

• To provide nutrients to living cells

• To measure temperature changes

Tags

NGSS.MS-LS1-2

This laboratory setup would most likely be used to demonstrate

• diffusion

• dehydration

• carbohydrate synthesis

• active transport