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Unit 12-1 Review

_________________ 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
________________ 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
An organism is ________________ when it has two identical alleles for a trait. homozygous
An organism is ________________ when it has two different alleles for a trait. heterozygous
According to the _________________________, genes are carried from parents to offspring on chromosomes. chromosome theory of inheritance
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
Created by: lschramme