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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 |