L1 Cells Flashcards
True or false: Only Eukaryotic Cells have a plasma membrane
False. All cells are enclosed in a plasma membrane.
This membrane separates the cell from it’s environment, controls the substances that move in and out of the cell, can deform without tearing, and can grow without losing continuity.
True or false: Prokaryotic Cells do not contain DNA
False. All cells contain DNA with genetic information that can be passed on.
True or false: Genetic code is the same in all cells
True - with some minor exceptions
True or false: All cells use RNA to translate information in DNA into protein
True
True or false: Proteins determine structure and function in all cells
True
Fill in the gaps:
__1__ cells contain __2__ - the organelle on which protein synthesis takes place.
1) All
2) ribosomes
True or false: All cells use ATP to transfer energy from one site to another
True
True or false:
All cells are derived from other cells
True. Cells divide to form daughter cells, so every cell has a parent cell.
Which cell type is the most abundant on earth?
Prokaryotic. They are also the simplest cellular organisms, but have survived longer than any other organism.
What evidence suggests that all living organisms are derived from a single primordial cell more than three billion years ago?
1) Resemblance among living cells is too great
2) Common cell components (amino acids, sugar, nucleotides & fatty acids) which can be made in vitro from simple organic molecules (carbon, nitrogen, oxygen)
3) Evidence from fossilised bacteria
Eukaryote or prokaryote:
True nucleus.
Euaryote
Eukaryote or prokaryote:
No true nucleus
Prokaryote
Eukaryote or prokaryote:
Larger cell (>10um)
Eukaryote
Eukaryote or prokaryote:
Smaller cell (<10um)
Prokaryote
Eukaryote or prokaryote:
Paired chromosomes in a nuclear membrane
Eukaryote
