Question

1. which organelle is responsible for modifying and packaging proteins?

a. ribosome
b. rough er
c. golgi apparatus
d. nucleolus

1. which structure is found in plant cells only?

a. mitochondria
b. cell wall
c. ribosomes
d. nucleus

1. what process moves molecules from high to low concentration without energy?

a. active transport
b. osmosis
c. facilitated diffusion
d. passive transport

1. which part of the cell is known as the powerhouse because it produces energy (atp)

a. ribosome
b. mitochondria
c. nucleus
d. chloroplast

1. the rough endoplasmic reticulum (er) has ribosomes attached to it because it:

a. makes lipids
b. packages waste
c. produces proteins
d. stores dna

Explanation:

• Question 5: The Golgi apparatus modifies, sorts, and packages proteins. Ribosomes synthesize proteins, rough ER is involved in protein synthesis and transport, and nucleolus makes ribosomal subunits.
• Question 6: Plant cells have a cell wall (provides structure and protection). Mitochondria (energy production), ribosomes (protein synthesis), and nucleus (genetic control) are in both plant and animal cells.
• Question 7: Passive transport moves molecules from high to low concentration without energy. Active transport uses energy, osmosis is water - specific passive transport, facilitated diffusion is a type of passive transport but more specific (needs transport proteins).
• Question 8: Mitochondria are called the powerhouse as they produce ATP (energy) through cellular respiration. Ribosomes make proteins, nucleus holds DNA, chloroplasts (in plants) do photosynthesis.
• Question 9: Rough ER has ribosomes for protein production. Smooth ER makes lipids, no organelle mainly “packages waste” in this context, nucleus stores DNA.

Answer:

1. C. Golgi apparatus
2. B. Cell wall
3. D. Passive transport
4. B. Mitochondria
5. C. Produces proteins