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Elliott - Science (6th Grade) > Chapter 4: Cell Theory and Structure > Flashcards

Chapter 4: Cell Theory and Structure Flashcards

(50 cards)

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1
Q
  1. The basic unit of life is the __________.
A

cell

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2
Q
  1. The three parts of the Cell Theory are: all living things are made of cells, cells are the basic unit of life, and __________.
A

all cells come from pre-existing cells

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3
Q
  1. Cells that do not have a nucleus are called __________ cells.
A

prokaryotic

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4
Q
  1. Cells that have a nucleus are called __________ cells.
A

eukaryotic

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5
Q
  1. The __________ controls what enters and leaves the cell.
A

cell membrane

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6
Q
  1. The jelly-like substance inside a cell is called __________.
A

cytoplasm

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7
Q
  1. The organelle known as the ‘powerhouse’ of the cell is the __________.
A

mitochondria

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8
Q
  1. Proteins are made by __________.
A

ribosomes

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9
Q
  1. The __________ packages and distributes proteins in the cell.
A

Golgi apparatus

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10
Q
  1. Plant cells have a rigid structure called a __________ that animal cells do not.
A

cell wall

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11
Q
  1. The green organelles where photosynthesis happens are called __________.
A

chloroplasts

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12
Q
  1. The large storage area in plant cells is called the __________.
A

central vacuole

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13
Q
  1. The scientist who first observed cork cells was __________.
A

Robert Hooke

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14
Q
  1. The scientist who said all cells come from other cells was __________.
A

Rudolf Virchow

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15
Q
  1. A single-celled organism is called __________.
A

unicellular

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16
Q
  1. Cells working together form __________.
A

tissues

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17
Q
  1. Tissues working together form __________.
A

organs

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18
Q
  1. Organs working together form __________.
A

organ systems

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19
Q
  1. The process where cells divide to form identical cells is called __________.
A

mitosis

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20
Q
  1. The process of maintaining a stable internal environment is called __________.
A

homeostasis

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21
Q
  1. The control center of the cell is the __________.
22
Q
  1. The two main types of cells are __________ and __________.
Study These Flashcards
A

prokaryotic, eukaryotic

23
Q
  1. The __________ is a network that helps transport materials in the cell.
Study These Flashcards
A

endoplasmic reticulum

24
Q
  1. Cells in multicellular organisms are often __________ for specific jobs.
25
25. The scientist who discovered that all animals are made of cells was __________.
Theodor Schwann
26
1. What is the basic unit of life? A. Atom B. Molecule C. Cell D. Tissue
C. Cell – Cells are the basic unit of structure and function in living things.
27
2. Which part of the Cell Theory says all cells come from? A. Non-living things B. Plants C. Pre-existing cells D. Chemicals
C. Pre-existing cells – This is the third part of the Cell Theory.
28
3. What type of cell has no nucleus? A. Eukaryotic B. Plant C. Animal D. Prokaryotic
D. Prokaryotic – These cells do not have a nucleus.
29
4. Which organelle is known as the powerhouse of the cell? A. Ribosome B. Nucleus C. Mitochondria D. Golgi body
C. Mitochondria – They convert food into usable energy.
30
5. What do ribosomes make? A. Energy B. Proteins C. DNA D. Sugars
B. Proteins – Ribosomes are responsible for protein synthesis.
31
6. Which organelle controls what enters and exits the cell? A. Cytoplasm B. Cell membrane C. Nucleus D. Mitochondria
B. Cell membrane – It acts as a barrier and gatekeeper.
32
7. Which organelle is found only in plant cells? A. Ribosome B. Lysosome C. Chloroplast D. Golgi body
C. Chloroplast – Used for photosynthesis in plant cells only.
33
8. What is the function of the nucleus? A. Make proteins B. Store water C. Control cell activities D. Break down waste
C. Control cell activities – The nucleus stores DNA and controls the cell.
34
9. What is cytoplasm? A. A cell wall B. A power source C. A fluid inside the cell D. A type of organelle
C. A fluid inside the cell – Cytoplasm supports and surrounds organelles.
35
10. What do lysosomes do? A. Store energy B. Produce proteins C. Break down waste D. Make DNA
C. Break down waste – Lysosomes contain enzymes for this.
36
11. Which scientist first used the word 'cell'? A. Schwann B. Hooke C. Leeuwenhoek D. Virchow
B. Hooke – He named cells after observing cork.
37
12. Which scientist said all plants are made of cells? A. Schwann B. Hooke C. Schleiden D. Virchow
C. Schleiden – He discovered all plants are made of cells.
38
13. Which scientist said all animals are made of cells? A. Schwann B. Hooke C. Schleiden D. Virchow
A. Schwann – He concluded all animals are made of cells.
39
14. What structure is only found in animal cells? A. Chloroplast B. Central vacuole C. Lysosome D. Cell wall
C. Lysosome – Primarily found in animal cells.
40
15. What type of organism has only one cell? A. Multicellular B. Eukaryotic C. Unicellular D. Plant
C. Unicellular – These are organisms made of one cell.
41
16. Groups of tissues working together form a(n): A. Cell B. Organ C. Organ system D. Organism
B. Organ – Tissues form organs with specific functions.
42
17. What is mitosis used for? A. Reproduction only B. Growth and repair C. Movement D. Eating
B. Growth and repair – Mitosis helps organisms grow and heal.
43
18. What helps maintain balance inside the cell? A. DNA B. Cell wall C. Cell membrane D. Nucleus
C. Cell membrane – Maintains internal conditions by regulating flow.
44
19. What do mitochondria produce? A. Water B. Energy C. Oxygen D. Protein
B. Energy – Mitochondria are the site of cellular respiration.
45
20. What type of microscope gives the most detail? A. Light microscope B. Magnifying glass C. Electron microscope D. Digital camera
C. Electron microscope – Offers very high magnification and resolution.
46
21. What is the function of the Golgi apparatus? A. Make DNA B. Package proteins C. Store water D. Help with movement
B. Package proteins – Golgi bodies modify and ship proteins.
47
22. Which organelle is a network of membranes for transport? A. Golgi body B. Endoplasmic reticulum C. Lysosome D. Ribosome
B. Endoplasmic reticulum – Helps transport materials throughout the cell.
48
23. What green pigment is found in chloroplasts? A. Hemoglobin B. Chlorophyll C. Melanin D. Cytoplasm
B. Chlorophyll – It captures sunlight for photosynthesis.
49
24. What are cells in multicellular organisms usually? A. Identical B. All the same size C. Specialized D. Unicellular
C. Specialized – Different cells have different jobs.
50
25. What process describes a cell becoming different for a job? A. Division B. Specialization C. Photosynthesis D. Respiration
B. Specialization – Cells develop to perform specific roles.

Elliott - Science (6th Grade) (17 decks)

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