A student measures for 10 days the average growth of 3 similar plants grown in d

Question

A student measures for 10 days the average growth of 3 similar plants grown in different lighting conditions: A, B, C.

[The top curve refers to Plant A which received the most light and the bottom curve refers to Plant C which received least light.]

What are possible dependent and independent variables for the investigation in this scenario?

Answer

A scientist is trying to increase the number of cells grown in the lab. After giving 3 different treatments, she obtained the results presented in the table below.

Percent survival of cell cultures

Cell Type

Treatment A

Treatment B

Treatment C

HeLa*

79%

25%

54%

Stem

56%

18%

81%

Kidney

18%

9%

2%

T cells

22%

22%

22%

*HeLa cells come from an immortal human cancer cell line. They were taken from a patient, Ms. Henrietta Lacks, in 1951 and have been continuously grown for research to this day. Ms. Lacks

a. DV = plant growth; IV = lighting conditions
b. DV = lighting conditions; IV = plant growth
c. DV = number of days; IV = plant growth
d. DV = number of days; IV = lighting conditions
e. DV = lighting conditions; IV = number of days

A student measures for 10 days the average growth of 3 similar plants grown in different lighting conditions: A, B, C [The top curve refers to Plant A which received the most light and the bottom curve refers to Plant C which received least light.]What are possible dependent and independent variables for the investigation in this scenario? A scientist is trying to increase the number of cells grown in the lab. After giving 3 different treatments, she obtained the results presented in the table below. HeLa cells come from an immortal human cancer cell line. They were taken from a patient, Ms. Henrietta Lacks, in 1951 and have been continuously grown for research to this day. Ms. Lacks' cells have been credited with helping find a cure for polio as well as becoming an effective model to study (and hopefully cure) cancer. What one of the following represents possible dependent and independent variables for the investigation in this scenario? DV = cell type; IV = treatment DV = percent survival of cell cultures; IV = treatment DV = cell type; IV = percent survival of cell cultures DV = treatment; IV = cell type DV = treatment; IV = percent survival of cell cultures

Explanation / Answer

1. a) DV = plant growth; IV = lighting conditions

2. b.DV = percent survival of cell cultures; IV = treatment

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.