1. A scientist investigating the cell membrane concludes that a particular substance is transported
by active transport. Which observation would support this conclusion?
The substance moves along the concentration gradient toward a region of lower
concentration
O B. The transport of the substance into the cell is reduced or reversed in the absence of ATP.
The direction of transport changes when the external solution is changed from a
hypertonic solution to a hypotonic solution.
Transport proteins embedded in the plasma membrane assist in the transport of the
substance into the cell.
O
What’s the answer

Answer

The transport of the substance into the cell is reduced or reversed in the absence of ATP. I think

Explanation:

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.