TEAS 7 practice 4,342 answers, all explained.

The water cycle is a continuous process where water evaporates from oceans, rises to the atmosphere, condenses into clouds, and returns to the surface as precipitation. This cycle is driven by solar energy and is crucial for distributing fresh water around the globe. Human activities such as deforestation and urbanization can disrupt local water cycles, leading to changes in precipitation patterns.

What is the main idea of the passage?

1. A Solar energy drives evaporation and helps water move from oceans into the atmosphere.
2. B Water evaporates from oceans, condenses into clouds, and returns to the surface as precipitation.
3. C The water cycle is important for fresh water distribution and can be affected by human actions.
4. D Deforestation and urbanization can disrupt local water cycles and change precipitation patterns.

The best answer is C. The passage describes the water cycle, highlights its role in distributing fresh water, and notes that human activities can disrupt it. This combination of ideas is the central focus.

• A: This supporting detail identifies the cycle’s energy source and one stage, but omits fresh water distribution and human impacts.
• B: This summarizes the cycle’s stages, but omits its importance for fresh water distribution and the effects of human activities.
• D: This summarizes the final sentence about human impacts, but omits the broader description of the water cycle and its importance for fresh water distribution.

A rectangular garden has a length of 14 feet. Its width is 3 feet less than half the length. What is the perimeter of the garden?

1. A 36 feet
2. B 42 feet
3. C 56 feet
4. D 50 feet

The best answer is A. Half the length is 14 ÷ 2 = 7 feet, so the width is 7 - 3 = 4 feet. Perimeter = 2 × (14 + 4) = 36 feet.

• B: 42 uses a width of 7, forgetting to subtract 3 from half the length.
• C: 56 is the area (14 × 4), not the perimeter.
• D: 50 uses a width of 11 (14 - 3), forgetting to take half the length first.

In which part of the nephron does the majority of glucose reabsorption occur?

1. A Loop of Henle
2. B Distal convoluted tubule
3. C Collecting duct
4. D Proximal convoluted tubule

The best answer is D. The proximal convoluted tubule (PCT) reabsorbs about 100% of filtered glucose under normal conditions via sodium-glucose cotransporters. The distal convoluted tubule and collecting duct reabsorb water and electrolytes but not significant glucose. The loop of Henle primarily concentrates urine.

• A: The loop of Henle establishes the osmotic gradient for water reabsorption but does not reabsorb glucose.
• B: The distal convoluted tubule is involved in fine-tuning electrolyte reabsorption, not glucose.
• C: The collecting duct reabsorbs water under ADH influence and some urea, but not glucose.

A researcher wants to test the effect of different amounts of sunlight on the growth of bean plants. She places three groups of plants under 2 hours, 6 hours, and 12 hours of sunlight per day, while keeping water, soil, and temperature constant. Which variable is the independent variable?

1. A Water amount
2. B Plant growth
3. C Temperature
4. D Amount of sunlight

The best answer is D. The independent variable is the factor that the researcher manipulates. Here, the amount of sunlight is deliberately changed across groups.

• A: Water amount is a controlled variable, kept constant.
• B: Plant growth is the dependent variable, measured as an outcome.
• C: Temperature is a controlled variable, kept constant.

The lab results were inconclusive____ therefore, the physician ordered additional testing.

1. A ;
2. B :
3. C ,
4. D no punctuation is needed

The best answer is A. Both parts are independent clauses joined by the conjunctive adverb therefore, which takes a semicolon before it and a comma after it.

• B: A colon introduces a list or an explanation; it is not the standard mark before a conjunctive adverb such as therefore.
• C: A comma alone between two independent clauses creates a comma splice, even with therefore.
• D: With no punctuation, the two independent clauses run together as a run-on sentence.