Ch 4 QUIZ

Nucleus

A single cell in a smokers lung has become cancerous. It doubles its DNA and divides much faster than a normal lung cell. The most likely change that would have caused this condition took place in the?

Smooth ER

Is the primary site for the synthesis of PHOSPHOLIPIDS &a cholesterol needed to make membranes

micrometer

The most convenient unit for measuring cells

Chloroplasts

What cellular structure is unique to plant cells and some photosynthetic fungi?

Ribosomal RNA

What does the nucleolus, within the nucleus, synthesize?

Plasma membrane

What is one cellular characteristic found in all prokaryotic and eukaryotic cells?

Glycocalyx

What protects a cell and may help keep other cells at a distance?

Glycoprotein

Cells that secrete large amounts of ________ have many Golgi stacks

Chromatin

DNA is associated with certain proteins, forming a complex called?

Protein synthesis

If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?

They both process energy for the cell. Mitochondria uses cellular respiration (chemical energy) to process energy & chloroplasts use photosynthesis to process energy (light energy)

List the similarities and differences between the functions of the chloroplasts and mitochondria.

Rough ER

Ribosomes stud the outer surface of?

Endoplasmic reticulum

The outer membrane of the nuclear envelope is continuous with the membrane of the ____ and is usually covered with attached ribosomes.

Centrosome-cell division

Which cellular structure is correctly matched to the role it plays within the cell?

Microtubules

Which of the following is a key component of the cytoskeleton?

Golgi complex

Which organelles can be considered a sorting, processing and packaging center?