5th terms
Which term is defined as the basic building blocks of life?
Cells
Which of the following statements is not a part of the
cell theory?
a. All cells require oxygen to survive.
b. All living things are composed of cells.
c. All cells come from other cells.
d. Cells are the basic unit of all organisms.
A
Where is the nucleus?
A
The cell grows and duplicates its DNA.
interphase
What is the powerhouse of the cell?
mitochondria
How many chromosomes are in a normal human cell?
46
During which stage does the nucleus divide in two?
mitosis
What is B?
cytoplasm
DNA forms X-shaped chromosomes and spindle fibers appear.
prophase
___________ and ___________are opposite processes involving the same substances.
Cellular respiration, photosynthesis
What protects and controls what moves in and out of the cell?
cell membrane
During which stage does the cell membrane of an animal look as if it is being pinched in the middle?
cytokinesis
Which is mitochondria?
D
The chromosomes separate at the centromeres.
anaphase
An ion moves through the cell membrane, using the channel of an embedded protein is called what?
facilitated diffusion
What contains all of the genetic information about the cell?
DNA
Which stage uses the most time for cell growth?
Interphase
What is C?
chloroplast
The chromosomes uncoil; two new nuclear membranes form.
telophase
What is passive transport?
Oxygen moves through the membrane from high to low concentration
Describe how cancer forms.
Sometimes the DNA in a cell becomes damaged, causing a mutation. If the mutation causes the cell to function abnormally, it may begin to grow and divide too fast. Cancer forms when cells divide uncontrollably, often forming tumors.
Tell me two similarites between plant and animal cells, and one difference between them.
Same: cell membrane, cytoplasm, nucleus, chromosomes, genes, DNA, ribosomes
Diffeerent: Animal-irregular shaped, PLant- cell wall, box-shaped
What is E and F?
E-cell membrane F- cell wall
List two ways mitosis and meiosis are similar and two ways they are different
Similar — both are cell division, both produce daughter cells, both involve phases;
Different — mitosis: involves all body cells for growth, development, and repair; divides once in four phases; produces two identical daughter cells with two complete sets of chromosomes; continues for the life of the organism; meiosis: involves only reproductive cells for making a new organism; divides twice in eight phases; produces four unique daughter cells each with only one set of chromosomes
Briefly describe the two types of asexual reproduction:
binary fission: A unicellular organism splits into two identical cells
vegetative reproduction: Parts grow out of the parent plant and become individual plants.