cells and viruses Flashcards
What is the basic unit of life?
Cell
True or False: Viruses are considered living organisms.
False
Fill in the blank: The outer membrane of a cell is called the __________.
cell membrane
What structure within the cell is responsible for producing energy?
Mitochondria
Which type of cell contains a nucleus?
Eukaryotic cell
Multiple Choice: Which of the following is NOT a component of a cell? A) Nucleus B) Ribosome C) Virus D) Cytoplasm
C) Virus
What is the primary function of ribosomes?
Protein synthesis
True or False: All viruses have a lipid envelope.
False
What is the genetic material found in viruses?
DNA or RNA
Fill in the blank: The __________ is the control center of the cell.
nucleus
What type of virus integrates its genetic material into the host’s genome?
Retrovirus
Multiple Choice: Which of the following is a prokaryotic organism? A) Plant cell B) Animal cell C) Bacteria D) Fungus
C) Bacteria
What process do cells use to divide and replicate?
Mitosis
True or False: Viruses can reproduce on their own.
False
Fill in the blank: The __________ is the jelly-like substance inside a cell.
cytoplasm
What is the role of the cell wall in plant cells?
Provides structure and support
What are the two main types of viruses based on their genetic material?
DNA viruses and RNA viruses
Multiple Choice: Which organelle is responsible for photosynthesis? A) Mitochondria B) Chloroplast C) Nucleus D) Ribosome
B) Chloroplast
What is the term for a virus that infects bacteria?
Bacteriophage
Fill in the blank: The __________ is a protective layer found outside the cell membrane in plant cells.
cell wall
True or False: All cells contain DNA.
True
What is the primary component of the cell membrane?
Phospholipids
Multiple Choice: Which of the following structures is involved in detoxifying harmful substances? A) Golgi apparatus B) Smooth endoplasmic reticulum C) Rough endoplasmic reticulum D) Nucleus
B) Smooth endoplasmic reticulum
What process do viruses use to enter host cells?
Endocytosis or fusion with the cell membrane
Fill in the blank: The __________ contains the cell’s genetic information.
DNA
What term describes the inactive form of a virus within a host cell?
Provirus
True or False: Eukaryotic cells are generally larger than prokaryotic cells.
True
what are the 4 principales of modern cell theory ?
1-every living organism is composed of 1 or more cells
2- the smallest oranism are single cells and cells are the functional units of multicellular organisms
3-all cells come from pre existing cells
4-Cells contain HEREDITARY materials which they pass to there offspring when they reproduce
all cells still share some basic characteristics that come from there ancestors
true
what can be these characteristics ?
- Abilities
2.organelles
what is an Organelle
it is a complex assembly of molecules forming a structure that performs a specialized structure for the cells
what does some organelle have and other not :
membranes
organelles are like to relationship that your body has with its organes
but your body is the cell and your organes the organelles
what does a plasma membrane do ?
What is the fluid substance inside a cell called?
Cytoplasm
True or False: The plasma membrane is selectively permeable.
True
Fill in the blank: The __________ is a double-layered membrane that surrounds the cell.
plasma membrane
What organelle is responsible for energy production in the cell?
Mitochondria
Which part of the cell contains the genetic material?
Nucleus
Multiple Choice: Which of the following is NOT a function of the plasma membrane? A) Transport B) Protection C) Energy production D) Communication
C) Energy production
What is the main component of the plasma membrane?
Phospholipids
True or False: Ribosomes are involved in protein synthesis.
True
What structure is responsible for detoxifying harmful substances in the cell?
Smooth endoplasmic reticulum
Fill in the blank: The __________ is involved in packaging and distributing proteins.
Golgi apparatus
