cell structure Flashcards
(44 cards)
examples of Eukaryotes
plant and animal cells
example of a prokaryotes
bacteria cells
The _________ contains the cell’s genetic material (in the form of DNA), and so controls the cell’s activities.
nucleus
The ______ are where proteins are made. We sometimes call them the site of protein synthesis.
ribosomes
What is ‘cytoplasm’?
A jelly-like material containing nutrients and salts, where chemical reactions take place
What are the three main types of cells?
Animal cells, plant cells, and bacterial cells.
Name the structures found in both animal and plant cells.
Nucleus, cytoplasm, and cell membrane, mitochondria
Name the structures found only in plant cells.
cell wall, vacuole, chloroplasts
What do plant cells have that help them keep their shape?
A cell wall and a large vacuole.
What is the main difference between bacterial cells and animal/plant cells?
Bacterial cells do not have a nucleus.
What is the DNA like in a bacterial cell?
It’s a single circular strand in the cytoplasm (not in a nucleus).
What are eukaryotic cells?
Cells that have a nucleus and other membrane-bound organelles.
Which organisms have eukaryotic cells?
Animals, plants, fungi,
What are prokaryotic cells?
Cells that do not have a nucleus or membrane-bound organelles.
Which type of cell are bacteria?
Prokaryotic
How do prokaryotic cells differ from eukaryotic cells in terms of genetic material?
Prokaryotic cells have free-floating DNA, while eukaryotic cells have DNA contained in a nucleus
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What are plasmids in bacterial cells?
small rings of DNA
What are the main components of a bacterial cell?
-Single Circular Strand of DNA
-Cytoplasm
-Cell Membrane
-Cell Wall
Plasmid
What are the characteristics of bacterial cells?
-Prokaryotic and unicellular
-Have a cell membrane, cell wall, ribosomes, and cytoplasm
-NO mitochondria and chloroplasts
-Genetic material is a single circular strand of DNA (nucleoid)
What is the genetic material in bacterial cells called?
Nucleoid
What structures do some bacteria have for movement?
Flagella
How do flagella help bacteria?
They allow bacteria to move around by rotating
What is the function of the nucleus in an animal cell/plant cell?
contains genetic material that controls the activities of the cell