Bio 181 Lab Midterm Study guide (GCU)
2024/2025 Exam Questions and Answers
| 100% Solved
A clinical trial experiment was designed to test the efficiency of a new drug
for treatment of leukemia. The experiment had two groups of volunteers, 20
people in each group. Group 1 was given a new drug and Group 2 was
given a placebo (harmless drug). Which of the two groups is considered an
experimental group, and which is considered a control group? - 🧠ANSWER
✔✔Group 1 is experimental group
Group 2 is the control group
Helen has designed an experiment to see the effect of fertilizer application
on plant growth. She added fertilizer in Row 1 of the plant nursery, but not
in Row 2. Both rows received an equal amount of water and light. Plant
growth was monitored over one year. Which variable is considered an
independent variable, and which is considered a dependent variable? -
🧠ANSWER ✔✔Plant growth is considered a dependent variable, while
fertilizer is an independent variable
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, At what stage of the scientific investigation does a researcher make
conclusions? - 🧠ANSWER ✔✔Immediately following data analysis and
interpretation
Which of the following shows the correct sequence of a scientific
investigation? - 🧠ANSWER ✔✔Ask a question, formulate a hypothesis,
design an appropriate experiment to test the hypothesis, analyze the
results, draw conclusions, and communicate results
In scientific investigation, a presupposition and cautious prediction made
about a particular issue to be investigated is called a: - 🧠ANSWER
✔✔Hypothesis
What does the Benedict's test detect? - 🧠ANSWER ✔✔Carbohydrate
(simple sugar, reducing sugar)
What does Lugol's test detect? - 🧠ANSWER ✔✔Detects presence of
starch in food samples (Carbs (starch))
What does Biurets test detect? - 🧠ANSWER ✔✔Detects presence of
proteins. (Amino Acid (protein))
What does the Grease spot/ brown paper detect? - 🧠ANSWER ✔✔tests
the presence of fats and lipids within food
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions and Answers
| 100% Solved
A clinical trial experiment was designed to test the efficiency of a new drug
for treatment of leukemia. The experiment had two groups of volunteers, 20
people in each group. Group 1 was given a new drug and Group 2 was
given a placebo (harmless drug). Which of the two groups is considered an
experimental group, and which is considered a control group? - 🧠ANSWER
✔✔Group 1 is experimental group
Group 2 is the control group
Helen has designed an experiment to see the effect of fertilizer application
on plant growth. She added fertilizer in Row 1 of the plant nursery, but not
in Row 2. Both rows received an equal amount of water and light. Plant
growth was monitored over one year. Which variable is considered an
independent variable, and which is considered a dependent variable? -
🧠ANSWER ✔✔Plant growth is considered a dependent variable, while
fertilizer is an independent variable
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 1
STATEMENT. ALL RIGHTS RESERVED
, At what stage of the scientific investigation does a researcher make
conclusions? - 🧠ANSWER ✔✔Immediately following data analysis and
interpretation
Which of the following shows the correct sequence of a scientific
investigation? - 🧠ANSWER ✔✔Ask a question, formulate a hypothesis,
design an appropriate experiment to test the hypothesis, analyze the
results, draw conclusions, and communicate results
In scientific investigation, a presupposition and cautious prediction made
about a particular issue to be investigated is called a: - 🧠ANSWER
✔✔Hypothesis
What does the Benedict's test detect? - 🧠ANSWER ✔✔Carbohydrate
(simple sugar, reducing sugar)
What does Lugol's test detect? - 🧠ANSWER ✔✔Detects presence of
starch in food samples (Carbs (starch))
What does Biurets test detect? - 🧠ANSWER ✔✔Detects presence of
proteins. (Amino Acid (protein))
What does the Grease spot/ brown paper detect? - 🧠ANSWER ✔✔tests
the presence of fats and lipids within food
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY 2
STATEMENT. ALL RIGHTS RESERVED
