Cell Growth and Division
Biology 11Name: _____________________
Ms. JamiesonDate: __________ Period: _____ Chapter 8-1: Cell Growth and Division
Does your body grow by adding more cells, or by individual cells growing larger? what is the connection between surface area of a cell and how quickly the cell can exchange water, oxygen, food and wastes? what is the connection between volume of a cell and how quickly the cell uses up oxygen and food and produces wastes?
What happens to surface area and volume as a cell gets larger?
Describe the two main reasons why cell size is limited
Compare mitosis and cytokinesis
Adding more cells
The more surface area, the more quickly the cell can exchange water, oxygen, food and wastes
The greater the volume of a cell, the more quickly the cell uses up oxygen and food and produces wastes
As the cell gets larger, the volume increases at a faster rate than the surface area.
1) the larger cell will have problems getting enough food and oxygen and removing enough wastes
2) in a large cell, the cell's DNA may not be able to make RNA fast enough to keep up with the increasing needs of the cell
Mitosis is the process by which the nucleus of the cell is divided into two nuclei, each with the same number and kinds of chromosomes as the parent cell.
Cytokinesis is the process by which the cytoplasm divides, thus forming two distinct cells
What are chromosomes, and what are they made of?
How many chromosomes do human cells contain?
What is chromatin made of? The diagram at right shows the relationship between DNA and chromosomes
What is the difference between chromatin during Interphase and during Mitosis?
Label the parts of the chromosome at right
Chromosomes are structures in the cell that contain the genetic information that is passed on from one generation of cells to the next. They are made of chromatin
Human cells contain 46 chromosomes
Chromatin is made of DNA and special proteins called histones
28365452206625(matching)
Ms. JamiesonDate: __________ Period: _____ Chapter 8-1: Cell Growth and Division
Does your body grow by adding more cells, or by individual cells growing larger? what is the connection between surface area of a cell and how quickly the cell can exchange water, oxygen, food and wastes? what is the connection between volume of a cell and how quickly the cell uses up oxygen and food and produces wastes?
What happens to surface area and volume as a cell gets larger?
Describe the two main reasons why cell size is limited
Compare mitosis and cytokinesis
Adding more cells
The more surface area, the more quickly the cell can exchange water, oxygen, food and wastes
The greater the volume of a cell, the more quickly the cell uses up oxygen and food and produces wastes
As the cell gets larger, the volume increases at a faster rate than the surface area.
1) the larger cell will have problems getting enough food and oxygen and removing enough wastes
2) in a large cell, the cell's DNA may not be able to make RNA fast enough to keep up with the increasing needs of the cell
Mitosis is the process by which the nucleus of the cell is divided into two nuclei, each with the same number and kinds of chromosomes as the parent cell.
Cytokinesis is the process by which the cytoplasm divides, thus forming two distinct cells
What are chromosomes, and what are they made of?
How many chromosomes do human cells contain?
What is chromatin made of? The diagram at right shows the relationship between DNA and chromosomes
What is the difference between chromatin during Interphase and during Mitosis?
Label the parts of the chromosome at right
Chromosomes are structures in the cell that contain the genetic information that is passed on from one generation of cells to the next. They are made of chromatin
Human cells contain 46 chromosomes
Chromatin is made of DNA and special proteins called histones
28365452206625(matching)