Use the Figure Below to Answer the Following Questions

question 103

Multiple Choice

Use the figure below to answer the following questions.

Figure 20.1.1
-Refer to Figure 20.1.1, which shows the circular flow of expenditure and income for Venus. During 2014, A was $100, B was $50, C was $30 and D was $10. What is aggregate income?

• A)$25
• B)$50
• C)$75
• D)$90
• E)$100

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Definitions:

Selectively Permeable

Describes membranes that allow certain substances to pass through while blocking others, crucial for cell function and homeostasis.

Plasma Membrane

The plasma membrane is a biological membrane that separates the interior of all cells from the outside environment, controlling the passage of substances.

Symport

A type of transporter protein that moves two or more substances in the same direction across a cell membrane.

Antiport

A mechanism of membrane transport where two substances are moved in opposite directions across a cell membrane, usually by a protein transporter.