Question

question 4 1 pts if a sequence of nitrogen bases in nucleic acid were a - u - c - g - a, which of the following would be true about the nucleic acid? it contains deoxyribose sugar. it could be found only in the nucleus. it contains ribose sugar. both a and b are true. question 5 1 pts phagocytosis is an example of: exocytosis. endocytosis. passive transport. facilitated diffusion. question 6 1 pts a membrane carrier structure attracts a solute to a binding site, changes shape, and releases the solute on the other side of the cell membrane. this describes the process of: endocytosis. the sodium and potassium pump. channel - mediated transport. carrier - mediated transport.

Explanation:

• Question 4: The presence of uracil (U) indicates that the nucleic - acid is RNA. RNA contains ribose sugar. DNA contains deoxyribose sugar and RNA can be found outside the nucleus (e.g., in the cytoplasm during translation).
• Question 5: Phagocytosis is a type of endocytosis where a cell engulfs large particles or other cells. Exocytosis is the opposite process of releasing materials out of the cell. Passive transport and facilitated diffusion do not involve engulfing.
• Question 6: Carrier - mediated transport involves a membrane carrier that binds to a solute, changes shape, and transports the solute across the cell membrane. Endocytosis involves engulfing, the sodium - potassium pump is a specific type of active transport for sodium and potassium ions, and channel - mediated transport uses protein channels instead of carriers.

Answer:

Question 4: It contains ribose sugar.
Question 5: endocytosis.
Question 6: carrier - mediated transport.