Question

question 17
a cell with numerous ribosomes is probably specialized for __.
o cell division
o energy production
o protein synthesis
o enzyme storage

question 18
which cell structure controls what moves into and out of the cell?
o cell wall
o cell membrane
o endoplasmic reticulum
o nuclear membrane

Explanation:

Analyze Question 17

Using the Organelle Functions knowledge point

Ribosomes are the cellular sites of translation, where genetic code is read to assemble amino acids into polypeptide chains. Therefore, a cell containing a high abundance of ribosomes is specialized for producing large quantities of proteins.

• "cell division" is primarily regulated by centrioles, spindle fibers, and nucleus-driven signals.
• "energy production" is the primary function of mitochondria.
• "protein synthesis" is the direct function of ribosomes.
• "enzyme storage" is associated with lysosomes or peroxisomes.

Thus, the correct option is "protein synthesis".

Analyze Question 18

Identify the function of the cell membrane.

The cell membrane (plasma membrane) is a selectively permeable phospholipid bilayer that regulates the entry and exit of ions, nutrients, and waste products, maintaining cellular homeostasis.

• "cell wall" provides structural support and protection in plants, fungi, and bacteria, but does not control selective transport.
• "cell membrane" controls what moves into and out of the cell.
• "endoplasmic reticulum" is involved in protein and lipid synthesis and transport within the cell.
• "nuclear membrane" regulates transport specifically between the nucleus and the cytoplasm.

Thus, the correct option is "cell membrane".

Answer:

Question 17

• cell division
• energy production
• protein synthesis (Correct answer)
• enzyme storage

Question 18

• cell wall
• cell membrane (Correct answer)
• endoplasmic reticulum
• nuclear membrane