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Unit 12-1 Review
| Question | Answer |
|---|---|
| _________________ are the basic unit of structure and function for all living organisms. | Cells |
| What are the two major parts that a plant cell has that an animal cell does not? | cell wall and chloroplasts |
| The ____________________ system creates offspring. | reproductive |
| The ___________________ system produces hormones. | endocrine |
| The ___________________ system fights diseases. | immune |
| The ________________ system removes wastes and regulates water. | excretory |
| The _______________ system takes in oxygen and removes carbon dioxide. | respiratory |
| The ________________ system breaks down and absorbs food. | digestive |
| The _______________ system supports and protects the body. | skeletal |
| The ________________ system enables movement. | muscular |
| The _________________ system processes information and directs the body's functions. | nervous |
| The _________________ system transports materials to cells and removes materials from cells. | cardiovascular (circulatory) |
| ________________ reproduction involves 2 parents. | sexual |
| ________________ reproduction involves 1 parent. | asexual |
| __________________ organisms are made of one cell. | unicellular |
| ___________________ organisms are made of multiple cells. | multicellular |
| Organisms that make their own food are called __________________. | autotrophs |
| Organisms that consume their own food are called __________________. | heterotrophs |
| A __________________ is an organism whose cells do NOT contain a nucleus. | prokaryote |
| A _________________ is an organism whose cells DO contain a nucleus. | eukaryote |
| ________________ is the scientific study of how living things are classified. | taxonomy |
| A ___________ ______ is a step-by-step guide that helps to identify the scientific name of organisms. | dichotomous key |
| A _______________ allele is noted by a capital letter. | dominant |
| A ________________ allele is noted by a lowercase letter. | recessive |
| TT is two _______________ alleles. | dominant |
| Tt is one _____________ allele and one _______________ allele. | dominant; recessive |
| tt is two _______________ alleles. | recessive |
| An organism's _________________ is its physical appearance. | phenotype |
| An organism's _________________ is its genetic makeup. | genotype |
| ________ reproduction produces the most diverse offspring | Sexual |
| In ____________ reproduction the offspring is 100% to the parents. | asexual |
| _________ ______ is the organisms change to survive in their habitat. | Natural selection |
| Human body cells contain ______ pairs, or 46 total chromosomes. | 23 |
| Mitosis occurs in _______________ cells. | body |
| Mitosis produces ______ new cells with each containing _________ chromosomes. | 2; 46 |
| Meiosis occurs in __________ cells. | sex |
| Meiosis produces _____ new cells with each containing _____ chromosomes. | 4; 23 |
| What 4 bases make up DNA? | adenine, cytosine, thymine, guanine |
| What 4 bases make up RNA? | adenine, cytosine, guanine, uracil |