7th Grade Review Flashcards
Which members of an ecosystem are responsible for breaking down dead plants and animals
Decomposers
Who developed the double helix model of DNA
Watson and crick
The statement “all living organisms are made of one or more cells” is part of what theory
Cell theory
Which cell organelle is responsible for storage
Vacuole
Which two organelles are in plant cells only
Chloroplasts and cell wall
Which form of a sexual reproduction forms a new organism from an outgrowth or bud on another organism
Budding
Which body system is responsible for getting rid of waste
The excretory system
Why are vertebrates able to regenerate and most vertebrates are not
Invertebrates have fewer specialized cells the. Vertebrates have
If an organism reproduces asexually its offspring will be
Genetically identical to the parent
Compared to human cells resulting from mitotic cell divisions human cells resulting from mitotic cell division would have
Home half the number of chromosomes
Fertilization
The merging of an egg cell and a sperm cell
Sexual reproduction
Type of reproduction in which there are two parents
Mitosis
The division of one cell into many identical cells
Asexual reproduction
Type of reproduction where there is only one parent
Meiosis
Cell division necessary for sexual reproduction
Metamorphosis
Series of changes in organism undergoes as it develops from an egg to an adult
Organs
Group of tissue that works together
Organ system
Group of organs which work together
Cells
The smallest part of a living organism
Tissues
A group of cells which worked together
Nutrition
A process by which a orgasm takes in food and changes it to a usable form
Homeostasis
A maintenance of a stable internal environment
Which activity normally occurs in the esophagus of human
Process of peristalsis
Which structure produces a substance the digest fats
Liver – produces bile
In humans structures that Absorb most of the products of digestion are
VillI have the small intestines
Arteries
They have thick walls and transport blood away from the heart
An increase in breathing rate is caused by more
Carbon dioxide in the blood
Mouth
Mechanical/chemical digestion
Liver
Breakdown of fats
Small intestine
Chemical digestion and absorption of nutrients
Stomach
Protein digestion begins here
Order tissues organisms cells and organs system in order from simplest to most complex
Cells tissues organs organ system
Most of the hereditary information that determines the traits of an organism is located in
The nuclei of body cells of individual
What must a leaf have for photosynthesis to occur
Chloroplast
All members of a specific species, in a given time is called what
Population
Animal
Multicellular, heterotrophic
Ex. Insect
Protist
Unicellular with a neucules
Plant
Multicellular, autotrophic
Ex. Tree
Kingdom
The largest group in the classification of living organisms
Fungus
Multicellular, heterotrophic
Ex. Mold, mushroom
Dominant genes
Ex.(TT)
Trait that usually appears in offspring
Resessive genes
Ex.(tt)
Gene who’s trait is not shown if paired with a dominant gene
Heterozygous(hybrid)
Ex.(Tt)
Different pair of genes for a trait
Homozygous(purebred)
Ex.(TT, tt)
Identical pair of genes for a trait
Niche
A species role in their community
Ecological succession
Process of change in the structure of an community over time
Carnivore
Eats meat
Decomposed
Break down food
Producer
Makes their own food
Sickle cell
Red blood cells form a sickle Or crescent shaped thing
Down’s syndrome
One with three
Mendel
Father of genetics
Ribosomes
Produce protein
Cytoplasm
Gel like substance that holds organelles in place
Cell membrane
Controls what goes in and out of cell
Circulatory system Nervous system Endocrine system Muscular system Skeletal system Digestive system Excretory system Respiratory system
Moves blood thro body Movement Hormones Movement(brain) Shape/protection Breaks down food Get rid of waste Oxygen
