Cell Structure Flashcards
(15 cards)
What is the purpose of a nucleus(2)
It controls the cell + It stores genetic information (DNA)
Which one of these organelles can you NOT find in a animal cell?:
A. The nucleus
B. Mitochondria
C. Chloroplast
D. Cytoplasm
E. Ribosomes
C.
In what process are the mitochondria used for?
Aerobic respiration
What is the purpose of the Cytoplasm?(2)
It is the fluid which keeps other organelles floating + Is the main site for any chemical reactions
How many nuclei are in a animal cell?
1
What are the functions of a cell?
A cell is gives a body structure and can convert nutrients into energy for specialized tasks
What is the role of ribosomes?
Main site for protein synthesis
What is the function of a cell membrane?
It is a slightly penetrable border to contain cytoplasm and controls what gets in and out of the cell
This controls the activities of a cell:
A. Nucleus
B. Cell Wall
C. Mitochondria
D. Vacuole
A.
These are found in the nucleus and code for different characteristics:
A. Food
B. Minerals
C. Oxygen
D. DNA
D.
What is the function of a red blood cell?:
A. To transport glucose
B. To transport minerals
C. To transport water
D. To transport oxygen
D.
Which of the following cells is used for reproduction?:
A. Sperm cells
B. Red blood cells
C. Neuron cells
A.
The _______ controls the activities of the cell. What goes in the blank space?
Nucleus.
The _________ is the jelly like substance in which chemical reactions take place. What goes in the blank space?
Cytoplasm.
GCSE Level Question:
Compare and contrast the structures of Eukaryotic and Prokaryotic cells.
Include references to the relative sizes of cellular structures in your answer
Write on paper or a book. This question in a exam is worth 6 marks.
Eukaryotic and Prokaryotic cells can be compared as follows:
Structural comparisons:
- They both have membranes/cytoplasm/ribosomes
- Sperm cells and some Prokaryotic cells have a tail/flagellum
- Prokaryotic cells can have more than one flagellum(Sperm cells only have one)
- Eukaryotic cells have mitochondria and chloroplasts whereas Prokaryotic cells do not.
- Eukaryotic cells have a nucleus to contain their DNA but Prokaryotic cells have a loose DNA strand in the cytoplasm
- Prokaryotic cells have plasmids whereas Eukaryotic cells do not.
- Eukaryotic cells have a cellulose cell wall, whereas Prokaryotic cells have a cell wall made from peptidoglycan.
Size Comparisons:
- Prokaryotic cells are smaller than Eukaryotic cells
- Prokaryotic cells are around 1µm compared to 10-100 µm in Eukaryotic cells
- Some organelles/chloroplasts/mitochondria are bigger than Prokaryotic cells OR would not fit in a Prokaryotic cell
Level 3 [5-6 marks]:
-A detailed comparison of Eukaryotic and Prokaryotic cells OR a clear understanding of how size and scale of cellular structures can be compared
-The answer communicates ideas clearly and coherently using a range of scientific terminology accurately.
- Spelling, Punctuation and Grammar are used with a high level of accuracy.
Level 2 [3-4 marks]:
- A clear comparison of Eukaryotic and Prokaryotic cells OR a clear understanding of how size and scale of cellular structures can be compared.
- The answer communicates ideas showing some evidence of clarity and organization and uses scientific terminology appropriately.
- Spelling, Punctuation and Grammar are of some accuracy.
Level 1 [1-2 marks]:
- Some differences and similarities between Eukaryotic and Prokaryotic cells are identified but direct comparisons not always made OR some reference to Eukaryotic cells being bigger than Prokaryotic cells (no mention of cellular structure).
- The answer communicates ideas using simple language and limited scientific terminology.
- Spelling, Punctuation and Grammar are used with limited accuracy.
