Chapter 4 Flashcards
(20 cards)
The function of the golgi apparatus is to:
Transport, sort, and modify protein.
What is one cellular characteristic found in all prokaryotic and eukaryotic cells?
A plasma membrane.
DNA must transcribe its information into what type of molecule before leaving the nucleus and entering the cytoplasm?
RNA.
What are the three tenets of the Cell Theory?
All living things are composed of one or more cells, cells are the basic unit of life, and all cells come from pre-existing cells.
ATP- dependent motor proteins that can generate fore and displacement along microtubules.
True.
Which of the following is a key component of the cytoskeleton?
Golgi apparatus, cytoplasm, mitochondria, cytosol, cytoskeleton.
What is the primary factor limiting cell size?
Surface area to volume ratio.
The outer membrane of the nuclear envelope is continuous with the membrane of the ____ and is usually covered with attached ribosomes.
Endoplasmic reticulum.
Which is usually the largest organelle, surrounded by a double membrane and houses DNA in eukaryotes?
Nucleus.
If a toxin, such as a bacterial toxin, destroys ribosomes, what cellular activity will be affected first?
Protein synthesis.
What cellular structure is unique to plant cells ?
Chloroplast.
The smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____.
Cell membranes.
Plants lack organ systems for disposing of toxic metabolic waste products. Their cells’ vacuoles are like what animal cell organelle?
Lysosomes.
The rough endoplasmic reticulum has many functions. Choose all that apply.
To synthesize, fold, and modify proteins
Which organelle is made of rRNA and proteins and is responsible for assembling amino acids into proteins?
Ribosome.
What is the primary function of mitochondria?
Generate ATP.
Mitochondria and Chloroplasts have their own DNA, ribosomes and a second membrane.
True
The function of the lysosomes is to:
To act as the cell’s waste disposal and recycling system. They contain digestive enzymes that break down cell waste, foreign invaders, and macromolecules.
Choose the correct three functions of the Smooth Endoplasmic Reticulum (SER).
Calcium storage, lipid synthesis, detoxification.
Match the cell type to the correct characteristic.
Plant Cell
Fungal Cell
Animal Cell
Plant Cell
Has chloroplasts.
Fungal Cell
Large vacuole.
Animal Cell
No cell wall.
