. Which of these processes would NOT be a part of a scientific investigation of an infectious disease? (Points : 1)
cataloguing symptoms
forming a hypothesis
intentionally infecting people
researching the disease
2. In an experiment, 20 pea plant seeds were placed on moist filter paper. They were kept at a temperature of 25°C. Half of the seeds were given 5 minutes of light. The other 10 seeds were kept in the dark. After 24 hours, the height of seedlings sprouted from the seeds were measured. What was the independent variable in this experiment? (Points : 1)
the number of seeds used
the amount of time the seeds were observed
the temperature at which the seeds were held
the exposure of seeds to light
We'll be glad to check your answers.
Answer 1: The process that would NOT be a part of a scientific investigation of an infectious disease is intentionally infecting people. It is unethical and against ethical guidelines to intentionally infect people with a disease for the purpose of a scientific investigation. Instead, scientists rely on natural cases or previous data to study the infection.
To answer this question, you need to understand the basic principles of scientific investigation and ethical guidelines. Intentionally infecting people goes against the ethical principles of scientific research and human rights.
Answer 2: The independent variable in this experiment is the exposure of seeds to light. The independent variable is the variable that is intentionally manipulated or changed in an experiment to observe its effect on the dependent variable. In this case, the researcher is interested in studying the effect of light exposure on the growth of pea plant seedlings.
To identify the independent variable in an experiment, you need to look for the variable that is intentionally manipulated by the researcher. In this case, the exposure of seeds to light is intentionally controlled by the researcher, making it the independent variable.