Chapter 10 Assessment
Sarah Haynes
Dr. Christerson
Honors Biology 9D
11 April 2015
10.1 Assessment
1a. Identify two reasons why a cell’s growth is limited.
The larger a cell becomes, the more demands the cell places on its DNA. In addition, a large cell is less efficient in moving nutrients and waste material across the membrane.
1b. As a cell’s size increases, what happens to the ration of its surface area to its volume?
As a cells size increases, the volume increases more than the surface area. However, the ratio decreases. Notice that the surface area is increasing as fast as the volume.
1c. Why is a cell’s surface area-to-volume ratio important?
Because this means that there is an adequate exchange of nutrients, wastes, and other materials. So when the volume of a cell increases it means that this cell can contain and obtain more materials. However, it varies due to the cell membranes bilayer, since it only allows specific material into and out of the cell.
2a. What is asexual reproduction? What is sexual reproduction?
Asexual Reproduction is the process of reproduction involving a single parent that results in offspring that are genetically identical to the parent. Sexual Reproduction is a type of reproduction in which cells from two parents unite to form the first cell of a new organism.
2b. What types of organisms reproduce sexually?
Humans and most animals and plants reproduce sexually, and so do some single-celled organisms
2c.What are the advantages and disadvantages of both asexual and sexual reproduction?
Asexual Reproduction helps in the survival because the faster they reproduce, the better their chance of survival over other organisms using the same resources. Having offspring that are genetically identical is also an advantage as long as the conditions remain favorable. However, a lack of genetic diversity becomes a disadvantage when conditions change in ways that do not fit the characteristics of an organism. On the other hand, Sexual Reproduction is a
Dr. Christerson
Honors Biology 9D
11 April 2015
10.1 Assessment
1a. Identify two reasons why a cell’s growth is limited.
The larger a cell becomes, the more demands the cell places on its DNA. In addition, a large cell is less efficient in moving nutrients and waste material across the membrane.
1b. As a cell’s size increases, what happens to the ration of its surface area to its volume?
As a cells size increases, the volume increases more than the surface area. However, the ratio decreases. Notice that the surface area is increasing as fast as the volume.
1c. Why is a cell’s surface area-to-volume ratio important?
Because this means that there is an adequate exchange of nutrients, wastes, and other materials. So when the volume of a cell increases it means that this cell can contain and obtain more materials. However, it varies due to the cell membranes bilayer, since it only allows specific material into and out of the cell.
2a. What is asexual reproduction? What is sexual reproduction?
Asexual Reproduction is the process of reproduction involving a single parent that results in offspring that are genetically identical to the parent. Sexual Reproduction is a type of reproduction in which cells from two parents unite to form the first cell of a new organism.
2b. What types of organisms reproduce sexually?
Humans and most animals and plants reproduce sexually, and so do some single-celled organisms
2c.What are the advantages and disadvantages of both asexual and sexual reproduction?
Asexual Reproduction helps in the survival because the faster they reproduce, the better their chance of survival over other organisms using the same resources. Having offspring that are genetically identical is also an advantage as long as the conditions remain favorable. However, a lack of genetic diversity becomes a disadvantage when conditions change in ways that do not fit the characteristics of an organism. On the other hand, Sexual Reproduction is a