Characteristics of Living Things
What is the basic unit of life?
cells
True or false: Anton von Leeuwenhoek was the first to observe and name cells.
false
True or false: Animal cells only have a cell membrane while a plant cell only has a cell wall.
false
Identify an organelle found only in plant cells, in which photosynthesis takes place.
chloroplast
Where is the DNA located in a prokaryotic cell?
suspended in the cytoplasm
Which of the following is not considered a living thing?
A. Single-celled protist
B. Seed
C. Fire
D. Fungus
C. Fire
Matthias Schleiden contributed what information to the cell theory?
Cells are the basic unit of structure and function in plants and animals.
___________ cells have no nucleus and no membrane-bound organelles; their DNA is suspended in the cytoplasm.
prokaryotic
How are vacuoles different in plant and animal cells?
Plant cells have one large vacuole, while animal cells have multiple smaller vacuoles or none at all.
How do ribosomes help maintain homeostasis in prokaryotic and eukaryotic cells?
protein production
What means making more of the same kind of organism?
reproduction
True or false: Robert Hooke first observed bacteria and called them “animalcules”.
false
___________ cells have a nucleus and membrane-bound organelles; their DNA is located in the nucleus.
eukaryotic
What is the purpose of the mitochondria?
Identify the two locations of ribosomes in eukaryotic cells.
rough endoplasmic reticulum and cytoplasm
Which of the following is a characteristic of ALL living things?
A. All living things need oxygen.
B. All living things will move.
C. All living things grow and develop.
D. All living things breathe.
C. All living things grow and develop.
What was the contribution of Hans and Zacharias Janssen to the development of the cell theory?
first microscope
Animal, plant, fungi, and protist are eukaryotic.
Bacteria and archaea are prokaryotic.
What structure surrounds plant cells and provides protection and durability?
cell wall
What is the function of the nucleolus in a cell?
Produces rRNA, which makes up ribosomes
List the 6 characteristics of living things.
1) Use energy. 2) Made of cells. 3) Reproduce. 4) Grow and develop. 5) Respond to environment. 6) Have DNA.
List the three parts of the cell theory.
1. All living things are made of cells.
2. Cells are the basic unit of life.
3. All cells come from preexisting cells.
Name 4 structures common to both prokaryotes and eukaryotes.
DNA, ribosomes, cytoplasm, and a cellular membrane
Which of the following is NOT a function of the smooth endoplasmic reticulum?
A. Produces proteins
B. Synthesizes lipids and steroids
C. Breaks down carbohydrates
D. Detoxification
A. Produces proteins
Which structure is composed of protein fibers that strengthen the cell, give it shape, and help with movement?
cytoskeleton