Mitosis
What is mitosis?
A. A deadly illness
B. A single-celled organism
C. The process of cell division
C. The process of cell division
What is a signal?
A. Something that communicates information or instructions
B. A structure used to protect us from harm
C. Something that creates and stores energy
A. Something that communicates information or instructions
Which of these is true of all animals and plants?
A. They each started as one cell
B. They each started with 10 cells
C. They each started with 100 cells
A. They each started as one cell
What's the technical name for programmed cell death?
A. Apoptosis
B. Mitosis
C. Photosynthesis
A. Apoptosis
Which organelle makes energy for the cell?
A. The nucleus
B. Ribosomes
C. Mitochondria
C. Mitochondria
What is one reason your body needs mitosis?
Examples: to grow, to heal wounds, or to replace old/damaged cells
What type of signal tells a cell that it's time to divide?
A. An audio signal
B. A chemical signal
C. An electrical signal
B. A chemical signal
What process allows one cell to become many as an organism grows?
A. Protein synthesis
B. Cell respiration
C. Mitosis
C. Mitosis
True or false: if some cells in an organism die, then the entire organism will die.
False
Which part of the cell controls what enters and leaves?
A. The cell membrane
B. The nucleus
C. The ribosomes
A. The cell membrane
What are chromosomes made of?
A. DNA
B. Proteins
C. Lipids
A. DNA
What are the chemical signals that tell a cell that it's time to start mitosis?
A. Growth factors
B. Neurotransmitters
C. Antibodies
A. Growth factors
The series of growth and development stages that an organism goes through is called:
A. Photosynthesis
B. The life cycle
C. Mitosis
B. The life cycle
Which of these is NOT an example of apoptosis (cell death)?
A. A tadpole losing its tail
B. Losing unneeded brain cell connections
C. Forming a scar after getting a cut
C. Forming a scar after getting a cut (this would happen due to mitosis)
What jelly-like material protects the inside of the cell and allows organelles to move around?
A. The Golgi apparatus
B. The cytoplasm
C. The nucleus
B. The cytoplasm
What are the structures that pull chromosomes apart with a cell divides?
A. Membranes
B. Spindles
C. Ribosomes
B. Spindles
Which event would likely trigger a chemical signal telling cells to divide?
A. Your stomach digesting food
B. Your lungs taking in oxygen
C. Getting a cut on your skin
C. Getting a cut on your skin
Put these human life stages in order: adult, infant, embryo, child
(Feel free to abbreviate)
What is cancer?
A. The uncontrolled growth and division of cells
B. A bacterial infection
C. A result of not eating enough carbohydrates
A. The uncontrolled growth and division of cells
What is the purpose of ribosomes?
A. To make energy
B. To give instructions using DNA
C. To make proteins
C. To make proteins
Which of these is true about the two daughter cells formed by mitosis?
A. They each have half of the DNA of the parent cell
B. They each have double the DNA of the parent cell
C. They each have identical copies of the DNA from the parent cell
C. They each have identical copies of the DNA from the parent cell.
What could happen cells do not receive a signal that it's time to STOP mitosis?
A. Asthma
B. Heart attack
C. Cancer
C. Cancer
What is the process that gives cells specialized jobs, such as muscle, skin, or brain cells?
A. Cell respiration
B. Osmosis
C. Differentiation
C. Differentiation
Which of these could result from uncontrolled mitosis (cell division)?
A. Extra energy for exercising
B. A tumor that stops organs from functioning properly
C. A big brain and higher intelligence
B. The formation of a tumor that stops organs from functioning properly (cancer)
Which organelle gives instructions to all the other cell parts, using DNA?
A. The cell membrane
B. The nucleus
C. The endoplasmic reticulum
B. The nucleus