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Which row in the chart below best describes the active transport of molecule [tex]\(X\)[/tex] through a cell membrane?

\begin{tabular}{|c|l|c|}
\hline
Row & \multicolumn{1}{|c|}{Movement of Molecule [tex]\(X\)[/tex]} & ATP \\
\hline
(1) & high concentration [tex]\(\rightarrow\)[/tex] low concentration & used \\
\hline
(2) & high concentration [tex]\(\rightarrow\)[/tex] low concentration & not used \\
\hline
(3) & low concentration [tex]\(\rightarrow\)[/tex] high concentration & used \\
\hline
(4) & low concentration [tex]\(\rightarrow\)[/tex] high concentration & not used \\
\hline
\end{tabular}

A. Row (1)
B. Row (2)
C. Row (3)
D. Row (4)

Sagot :

GinnyAnsweridn
To determine which row best describes the active transport of molecule [tex]\( X \)[/tex] through a cell membrane, let's break down the characteristics of active transport:

1. Direction of Movement: Active transport moves molecules against their concentration gradient. This means molecules are transported from an area of low concentration to an area of higher concentration.

2. Energy Requirement: Active transport requires energy, typically in the form of ATP, because it is moving molecules against the natural direction of diffusion.

Given this, we examine each row:

- Row (1):
- Movement Direction: high concentration [tex]\(\rightarrow\)[/tex] low concentration
- ATP: used

- Row (2):
- Movement Direction: high concentration [tex]\(\rightarrow\)[/tex] low concentration
- ATP: not used

- Row (3):
- Movement Direction: low concentration [tex]\(\rightarrow\)[/tex] higher concentration
- ATP: used

- Row (4):
- Movement Direction: low concentration [tex]\(\rightarrow\)[/tex] higher concentration
- ATP: not used

Explanation:
- For active transport, molecule [tex]\( X \)[/tex] must move from a low concentration to a higher concentration, which corresponds to rows 3 and 4.
- Additionally, active transport must use ATP, which corresponds to row 3.

Therefore, the correct answer is:

C. Row (3)
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