The world of life science
what does life science mean?
the study of life
what is stimuli and what are some examples?
causes of a change in an enviorment. an example is chopping down trees
what is diffusion?
the movement of particles from regions of high density to low density
who was the scientist who discovered the principles of heredity?
gregor mendel
what is a mutation?
a change in a nucleotide
what are 3 types of models?
what is conceptual, physical, and mathamatical
what is the word for when an organism maintains a stable enternal state in a changing enviorment?
what is homeostatis
what is the difference between passive transport and active transport?
passive transport does not need energy, but active transport does.
what is heredity?
the study of DNA
how many divisions are in meosis?
2
what are the steps to a sceintific method?
what is ask a question, make observations, form a hypothosis, test the hypothosis, anitilize results, draw conclusions, and communicate results
how much of the body is water?
what is 70%
what is photosynthesis?
the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to make food
what is the difference in homozygous and heterozygous
homozygous has the same alleles, (DD) and (dd) and heterzygous has a dominant and ressesive allele (Dd)
what are the 3 types of mutations?
benificial, nueteral, and harmful
what are the different types of microscopes?
what is compound light and electron microscope?
what is a lipid?
a type of biochemical made up of oils and fats
how do large particles get in and out of the cell?
passive and active transport
what is incomplete dominance?
when you get a mix of the dominant trait and the ressesive trait
what are the 3 ways you can get a mutation?
smoking, harmful chemicals, and UV light.
what are all the benifits to models?
we can see small things in 3d and close up
what is the difference between a muticellular organism and a unicellular organism?
multicellular has mutiple cells, while unicellular only has one
what is fermentation and when does it occur?
the breaking down of food without oxygen. it occurs when there is absence in oxygen
what is the difference between a genotype and a phenotype?
a genotype is your allele (dd, DD, or Dd) and a phenotype is your look like red hair, blue eyes, and your skin type
in DNA, what are the 4 bases and which bases pair with each other
adnine with thymine and guanine with cytosine