Homeostasis
The process of maintaining internal process is called what?
Homeostasis
What is an example of light energy and chemical energy?
Light energy= sunlight
Chemical= ATP
What is the initial source of energy for a food/energy pyramid?
The Sun
What is the process in which a species has changed over time
Evolution
What is a gene?
A segment of DNA that codes for a specific protein.
Responses are caused by
stimulus
What are the outputs of photosynthesis?
glucose and oxygen
What kinds of organisms make their own food?
Autotroph or producer
What is the mechanism for evolution or the process whereby organisms better adapted to their environment tend to survive and produce more offspring
natural selection
What does DNA stand for?
Deoxyribonucleic acid
How does the body maintain homeostasis when its cold?
we shiver which moves muscles causing heat to be released, increasing our body temperature
Can energy be created or destroyed?
No (1st law of thermodynamics)
What is the difference between abiotic and biotic factors
biotic= living
abiotic= nonliving
The primary source of genetic variation within a population of organisms
Mutations
What are the steps of expressing a gene?
DNA is transcribed into mRNA.
mRNA is then translated into a protein.
Plants will continue to uptake water until there is too much and then stop. This is an example of what type of feedback mechanism?
Negative feedback
What is the metabolic process your cells will perform in the absence of oxygen
Anaerobic respiration or lactic acid fermentation
How much energy is passed down to the next level of the food chain?
10%
What is an inherited trait that increases an organism's chance of survival
adaptation
What kind of allele needs 2 copies to be expressed
Recessive alleles
What is an example of positive feedback?
contractions
How many ATP molecules are made during aerobic respiration?
32 ATP
What is the close relationship between 2 or more organisms that benefit each other?
Symbiotic Relationship
What are some evidence of evolution?
Structures, DNA, Fossils, Embryos
The process in meiosis in which homologous chromosomes exchange segments of DNA
Crossing over