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100 Facts 51-100
7th Science Final Exam
Question | Answer |
---|---|
51) Asexual reproduction: Advantage: Disadvantage: | only one parent needed, offspring is exact copy; quicker rate of production; little biodiversity to withstand change in environment |
52)Sexual reproduction: Advantage: Disadvantage: | 2 parents, offspring has half DNA from each parent; larger variety in species; lots of energy pent finding mate and reproducing |
53)Genotype; Phenotype | Gene makeup of trait, physical appearance of trait |
54) Show in phenotype when inherited; only shows in phenotype when inherited from both parents | Dominant gene, recessive gene |
55) Both gene types are the same (ex: TT, tt). One gene is dominant, other recessive (ex: Tt) | Homozygous, heterozygous |
56) Punnet Square | Visual way to see possible gene pairs |
57) Basic unit of life, levels of organization smallest to largest in organism | Cell, tissue, organ, organ system, organism |
58) Homeostasis | Regulation of body systems, equilibrium |
59) Brings body out of homeostasis; brings body back into homeostasis | Stimulus, response |
60) Five functions of skeletal system | Make red blood cells, help us move, store calcium and other minerals, protects internal organs, gives shape and support to body |
61) Joint; Five types of joints | Where two or more bones together, fixed, ball and socket, gliding, hinge, pivot |
62) Tendon, Ligament | Muscle to bone, bone to bone |
63) Functions of the muscular system | Contract to move bones and body parts |
64) 3 types of muscles | Skeletal (voluntary), smooth (organs, involuntary), cardiac (heart, involuntary) |
65) Functions of integumentary system | Sweat to excrete waste, make Vitamin D, protect internal organs, regulate body temperature |
66) Structures of the integumentary system | Epidermis (dead skin cells), endodermis(produces new skin cells), dermis( nerves, sweat and oil glands, blood vessels), hair and nails |
67) Functions of the circulatory system | Bring oxygen to cells, bring food to cells, carry waste from cells, fight invaders and deliver chemical messages |