Term | Definition |
All cells have an internal substance called __________, a clear gelatinous fluid enclosed within a membrane. | Cytoplasm |
Cells are composed primarily of water and the elements ________, ___________, __________,________ | Oxygen, Hydrogen, Carbon, Nitrogen |
Growth in most organisms is caused by nuclear cell division.Through this new cells are made,in humans the 46 chromosomes in the cell divide through a series of steps resulting in 2 new cells that each has the original 46 chromosomes. | Mitosis |
Making exact copies of the DNA in each of the two “daughter” cells, and is often called binary fission. This type of reproduction is also called __________ because only one organism involved & there is no exchange of genetic material or DNA. | Asexual Reproduction |
The cell divides twice in a process called________. This is how sperm and egg cells are formed through a series of steps. | Meiosis |
In this type of reproductive the flower is the reproductive organ the ovules are the egg cells, and the pollen contains the sperm. This form of reproduction is ________, because it requires the combination of DNA between 2 organisms of the same species. | Sexual Reproduction |
__________ occurs outside the body, the female lays the eggs (ovum) and the males spray them with sperm to fertilize them. | Cross-fertilization |
___________ of plants takes place by cutting portions of the plant and replanting them | Asexual Reproduction |
____________ involves seeds produced by female and male plants, which are then cross-pollinated with help from insects or other animals. | Sexual Reproduction |
__________ is the hereditary material of living organisms | Deoxyribonucleic Acid (DNA) |
What are the four nitrogen bases that are paired in the double-helix structure of DNA | Adenine, Thymine, Guanine, Cytosine |
Adenine pairs with what? | Thymine |
Guanine pairs with what? | Cytosine |
The gene for eye color and other traits that are the paired chromosomes in the same location are called? | Alleles |