7th Grade Review Flashcards
All cells come from _________
other cells
Cells can carry out all of
life’s functions
All _______________ are made of cells.
living things
What scientific instrument has led to the development of the cell theory?
microscope
What two things are found only in plant cells?
chloroplasts and cell wall
What is the function of chloroplasts?
absorbs sunlight
What is the function of the cell wall?
protection and structure
What can plant cells do that animal cells can’t?
make their own food
What process creates reproductive (sex) cells that carry half the genetic material of the parent cell?
meiosis
Meiosis
1 cell = 4 haploid cells
What process creates new cells for growth and repair through cell division that are identical to the parent cell?
mitosis
mitosis
1 cell = 2 identical diploid cells
What are the phases of the cell cycle?
Interphase, mitosis, cytokinesis
List the steps of mitosis
prophase, metaphase, anophase, telophase
Groups of cells create?
Tissues
Groups of tissues create?
organs
Groups of organs create?
organ systems
What is an organism made of one cell called?
unicellular
What is an organism made of more than one cell called?
multicellular
What is the passive transport of water molecules across a cell membrane called?
osmosis
What is the passive transport of substances other than water molecules across a cell membrane called?
diffusion
What is the ability of the cell membrane to block some substances, but allow others to pass into the cell?
selective permeability
What is the hierarchy of living things?
Domain > Kingdom > Phylum > Class > Order > Family > Genus > Species
How can you remember the hierarchy of living things?
Dear King Phillip Came Over For Great Spaghetti.
What is an organism’s genus and species called (also called the scientific name)?
Binomial nomenclature
What is a group of similar looking organisms that have the ability to reproduce called (they would have the most in common)?
species
What domain contains single cell organisms that can survive in extreme conditions?
Archaea
What domain contains the kingdoms of Protista, Fungi, Animals, and Plants?
Eukarya
What domain is made up of microscopic organisms that recycle nutrients?
Bacteria
Examples of phyla “cnidarians”
jellyfish, sea anemones, corals
Examples of phyla “mullusks”
clams, oysters, scallops, snails, and octopi (most have shells)
Examples of phyla “annelids”
segmented worms, earthworms, leaches
Examples of phyla “platyhelminthes”
flatworm, tapeworm
Examples of phyla “nematodes”
round worms, heart worms
Examples of phyla “arthropods”
insects, spiders, crustaceans (lobsters & crabs)
Examples of phyla “echinoderms”
sea stars, sea urchins, sand dollars, sea cucumbers
Examples of phyla “chordates”
fish, frogs, snakes, birds, bears, and humans
Description of phyla “mosses”
grows close to the ground, not tree root system, no flowers
Description of phyla “ferns”
grows close to ground, has tree root system, no flowers
Description of phyla “conifers”
grows tall, true root system, needles and cones
Description of phyla “flowering plants”
variable sizes, true root system, flowers, and often fruit
What is the process where plants create their own food?
Photosynthesis
What is the formula for photosynthesis?
6H2O + 6CO2 + sunlight»_space; C6H12O6 + 6O2
What source of energy is needed for photosynthesis?
Sunlight
What two resources are reactants during photosynthesis?
water and carbon dioxide
What tow resources are the products of photosynthesis?
glucose and oxygen
What do plants use glucose for?
food
What chemical in chloroplasts absorbs or traps sunlight?
chlorophyll
What process is the foundation of virtually all food webs?
photosynthesis