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This study guide covers topics such as pollination, natural selection, reproduction, DNA, and systems in the body. It includes definitions, processes, and examples to help students review 7th-grade biology concepts. Discover how organisms survive and reproduce, genetic inheritance, and body systems' functions.
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Pollination – sexual or asexual sperm EGG
Natural selection simply means that the organisms and species that survive and reproduce are the sole ancestors to the next generation of living things. Those that die or fail to reproduce will not continue. How does natural selection work
Charles Darwin saw in the finches was the difference in the beak adaptation, this fitting each new species to its niche or its place in the new environment. What did darwin discover about finches on the galapagos islands?
an offspring grows out of the body of the parent What is budding
if a part of their body is cut into half, they are able to grow the lost body part within a period of time. What is regeneration
the single DNA molecule replicates and the original cell is divided into two identical cells. What is fission
Requires fertilization of an egg by a sperm Can happen in plants and animals What is sexual reproduction
Requires only one parent. No egg or sperm required. What is asexual reproduction
Offspring look identical to the parents What type of offspring do asexual parents produce?
when a human picks and chooses specific traits for an organism by cross-breeding organisms with the desired traits What is selective breeding?
rr x rr ss x ss uu x uu Always cross recessive traits if you want only recessive traits ! If you want only recessive traits what should you cross? (punnett square not necessary)
What is the relationship between Dna, nucleus, gene, chromosome
How do endocrine and reproductive systems relate to one another? The endocrine system releases the hormones which regulate sexual function and reproductive processes Including the testes and ovaries in the Reproductive system
Inherited Through genes How are traits inherited?
Which two systems regulate the amount of oxygen and carbon dioxide in the blood?
Sperm Egg Ovary Testes Ovule Semen testosterone What are the functions of :
Mitochondria Cell wall Cell membrane chloroplast Function of these cell parts
removing waste products from the blood Function of the kidneys
Diaphragm Bronchial tubes Epiglottis Alveoli Function of the parts:
Wear goggles Wear gloves Tell teacher about accidents Safety rules when using chemicals in a lab
Function of blood vessels and their description hollow tubes that transport blood throughout the entire body
force of blood against the walls of arteries Describe what blood pressure is
Physical or mechanical energy Energy required for peristalsis
Physical chewing to chemical digestion Energy transformation in mouth during digestion
Starches are breaking down to simple sugars Why do starches begin to taste sweet in the mouth…what’s happening?
Percent chance of having a dominate or recessive trait using a punnett square