Question

1. which part of the cell is responsible for controlling the activities of the other parts of the cell? a. vacuole b. nucleus c. cell membrane 2. why does a plant cell have a fixed shape and an animal cell does not? a. plant cells have larger vacuoles than animal cells. b. the process of photosynthesis causes plant cells to have a rigid shape. c. the cell membrane of a plant cell is surrounded by a cell wall. 3. what are the tiny cell organs that produce protein? a. smooth er b. ribosomes c. lysosomes 6. which structure is only found in animal cells? a. pinocytotic vesicle b. golgi apparatus c. nucleolus 7. plant and animal cells are eukaryotic. this means they... a. are able to multiply b. have a nucleus c. contain dna and rna 8. the internal parts of a cell are suspended in a jelly - like liquid called the... a. centrioles b. golgi apparatus c. cytoplasm

Explanation:

1. The nucleus controls cell activities as it contains genetic material and coordinates cell - related functions.
2. Plant cells have a fixed shape mainly due to the presence of a cell wall. Animal cells lack a cell wall and thus have more variable shapes. Also, plant cells typically have larger vacuoles than animal cells.
3. Ribosomes are the organelles responsible for protein synthesis.
4. Pinocytotic vesicles are only found in animal cells. They are involved in the process of pinocytosis, which is a form of endocytosis.
5. Eukaryotic cells (both plant and animal) have a nucleus, are able to multiply, and contain DNA and RNA.
6. The internal parts of a cell are suspended in cytoplasm, which is a liquid - like substance.

Answer:

1. b. Nucleus
2. a. Plant cells have larger vacuoles than animal cells; b. The process of photosynthesis causes plant cells to have a rigid shape; c. The cell membrane of a plant cell is surrounded by a cell wall.
3. b. Ribosomes
4. a. Pinocytotic vesicle
5. a. Are able to multiply; b. Have a nucleus; c. Contain DNA and RNA
6. c. Cytoplasm