Question

1. what is the basic unit of life?

a) tissue
b) organ
c) cell
d) organism

1. which organelle is known as the powerhouse of the cell?

a) ribosome
b) golgi apparatus
c) mitochondria
d) nucleus

1. what structure regulates the movement of substances in and out of the cell?

a) cytoplasm
b) cell wall
c) plasma membrane
d) nucleus

1. which of the following is found in plant cells but not in animal cells?

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

1. the jelly - like substance inside the cell is called:

a) nucleoplasm
b) cytoplasm
c) protoplasm
d) chlorophyll

1. what is the function of ribosomes?

a) energy production
b) protein synthesis
c) lipid synthesis
d) dna replication

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

a) endoplasmic reticulum
b) golgi apparatus
c) lysosome
d) ribosome

Explanation:

1. The fundamental building block of all living things is the cell; tissues, organs, and organisms are larger structures made of cells.
2. Mitochondria produce energy (ATP) for the cell, earning it the "powerhouse" label.
3. The plasma membrane is a selectively permeable barrier that controls substance movement in/out of the cell.
4. Chloroplasts are unique to plant cells (for photosynthesis); animal cells lack them.
5. Cytoplasm is the gel-like matrix that fills the space inside the cell, holding organelles.
6. Ribosomes are the cellular structures that assemble amino acids into proteins.
7. The Golgi apparatus modifies, packages, and transports proteins and lipids within the cell.

Answer:

1. C) Cell
2. C) Mitochondria
3. C) Plasma membrane
4. C) Chloroplast
5. B) Cytoplasm
6. B) Protein synthesis
7. B) Golgi apparatus