Homeostasis
What is the maintenance of stable internal conditions that are necessary for life functions
Homeostasis
The invention of the microscope made it possible for people to discover
a. plants.
b. skin.
c. animals.
d. cells.
d. Cells
Which organelle is the control center of a cell?
Nucleus
Organelles that use energy from sunlight to produce food are called mitochondria.
False, chloroplast
What is the first step in the Cell Cycle
Interphase
Heterotrophic bacteria obtain food by
a. capturing the sun’s energy.
b. using the energy from chemicals in their environment.
c. consuming autotrophs and other heterotrophs.
d. helping autotrophs make food.
c. Consuming autotrophs and other heterotrophs
Binary fission is the bacterial process of
a. asexual reproduction.
b. obtaining food.
c. producing energy.
d. forming endospores.
a. Asexual Reproduction
Which organelle controls which substances enter and leave the cell (in and out)
Cell Membrane
Binary fission occurs when a bacterium transfers some of its genetic material to another bacterium.
False, conjugation
What is the second step in the Cell Cycle
Prophase
Why must cells and organisms remove harmful wastes?
a. The build-up of harmful wastes can disrupt homeostasis.
b. The build-up of harmful wastes can be poisonous to the body.
c. If waste materials build up, then materials the cell needs cannot enter.
d. All of the above
d. All of the above
Which of the following statements is part of the cell theory?
a. Only plants are composed of cells.
b. All cells are produced from other cells.
c. Cells can be produced from nonliving matter.
d. Cells are one of several basic units of structure and function in living things.
b. All cells are produced from other cells.
Which organelle protects and supports the cell
Cell Wall
The cell theory states that cells are produced from nonliving cells.
False, Living
What is the third step in the Cell Cycle
Metaphase
Which term refers to the movement of materials through a cell membrane when the cell’s energy is required?
Active Transport
Which organelles release chemicals that break down large food particles into smaller ones?
lysosomes
Which organelles store food and other materials needed by the cell?
Vacuole
You can't see the cells in your body because most of them are very small.
True
What is the Fourth Step in the Cell Cycle
Anaphase
What is it called when a cell splits into two new cells that are genetically identical to the original cell?
Cell Division
What is the sixth and last step in the Cell Cycle
Cytokinesis
Which organelle converts energy from food molecules into energy the cell can use.
mitochondria
The cells in a many-celled organism often have different sizes and shapes.
True
What is the Fifth Step in the Cell Cycle before Cytokinesis
Telophase