Biology

Question 1

Cell Membrane

Answer 1

The semipermeable membrane surrounding the cytoplasm of a cell

Question 2

Cytoplasm

Answer 2

A cytoskeleton is present in all cells of all domains of life. It is a complex network of interlinking filaments and tubules that extend throughout the cytoplasm, from the nucleus to the plasma membrane.

Question 3

Endoplasmic Reticulum

Answer 3

a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis.

Question 4

Ribosome

Answer 4

The ribosome is a complex molecule made of ribosomal RNA molecules and proteins that form a factory for protein synthesis in cells. In 1955, George E. Palade discovered ribosomes and described them as small particles in the cytoplasm that preferentially associated with the endoplasmic reticulum membrane.

Question 5

Lysosome

Answer 5

An organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane.