A euglena is a microorganism that can either make its own food using energy from the Sun, or it can feed on other organisms to get the nutrients and energy that it needs.
Which of the following statements is demonstrated by the euglena?

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

How does the author's purpose in this passage differ from an author writing about her personal struggle living with asthma?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?