4. Give functions.
a. Plasma membrane
b. Cytoplasm
c. Lysosome
d. Vacuole
e. Nucleus
Answers
Answer:
a) protect the cell from its surroundings.
b) give shape to the cell.
c) they engulf viruses and bacteria
d) they provide structural support and also help in storage.
e) store cell heriditary material that is DNA
a)
The plasma membrane of a cell acts as a protective boundary between the contents of the cell and the environment surrounding it.
b)
The cytoplasm in a cell provides a base medium for various cellular activities, processes, and organelles. In some cases, it also helps in locomotion of the cell.
c)
Each lysosome in a cell contains certain lysosomal enzymes, which can digest the food material captured by the cell. The lysosome fuses with the vacuole containing the food (to make a food vacuole), and the enzymes are released.
d)
Vacuoles temporarily (except for water vacuoles in plant cells) store those materials which do not need to be modified, processed and packaged by the Golgi Apparatus, but which are still are still required by the cell. in plant cells, they provide rigidity to the cell.
e)
The nucleus controls the formation of ribosomes (protein manufacturers), and to some extent the types of proteins to be synthesized by the cell. As such it controls all the activities of the cell. The nucleus also contains DNA in the form of chromosomes, which is essential for reproduction.