Question

select the statement(s) that accurately describe a scientists use of repetition.
a biologist testing a bacterial cell culture four times for an antibiotic resistance experiment.
an environmentalist observing a watering hole on seven different days to collect data on antelope feeding patterns.
a chemist conducting four different experiments in a laboratory during the same week.
a zoologist feeding the pandas each day to make sure they are healthy.
a geologist studying caves and collecting rock samples at each site.

Explanation:

• A biologist testing a bacterial cell culture four times for an antibiotic resistance experiment: This shows repetition in an experiment. Repetition in science helps ensure the reliability of results. By testing the bacterial cell culture multiple (four) times, the biologist is repeating the experimental procedure.
• A geologist studying caves and collecting rock samples at each site: This is more about sampling at different sites (presumably multiple sites) rather than repetition of an experimental procedure.
• A zoologist feeding the pandas each day to make sure they are healthy: This is a daily care - taking activity, not an experimental repetition.
• A chemist conducting four different experiments in a laboratory during the same week: These are different experiments, not repetition of the same experiment.
• An environmentalist observing a watering hole on seven different days to collect data on antelope feeding patterns: This is observation on different days (sampling over time) for a natural - behavior study, not experimental repetition.

Answer:

A biologist testing a bacterial cell culture four times for an antibiotic resistance experiment.