Genotype is the genetic makeup; what can be passed on to your children
Phenotype is the physical appearance; what is seen in you right now; how you look
Back
adaptation
Front
inherited trait that is selected for over time because it allows organisms to better survive in their environment
Back
Evolution
Front
Is change in organisms over time
Back
Endoplasmic Reticulum
Front
a system of membranes that is found in a cell's cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids; folded transport system for the cell
Back
Producer
Front
organism that obtains its energy from abiotic sources such as sunlight or inorganic chemicals
Back
Artificial Selection
Front
process by which humans modify a species by breeding it for certain traits
Back
Theory
Front
proposed explanation for a wide variety of observations and experimental results
Back
pathogen
Front
agent that causes disease
Back
homologous structures
Front
body part that is similar in structure on different organisms but performs different structures
Back
Gametes
Front
reproductive cells, have only half the number of chromosomes as body cells; in humans, the egg or sperm
Back
fossils
Front
trace of an organism from the past
Back
Darwin's Theory of Natural Selection
Front
1. More offspring are born into a population that can survive.2. These offspring all contain variations
3. These offspring must compete for natural resources
4. The organisms with the best variations will survive and reproduce. (Survival of the fittest)5. Over time, descent (the ancestors will be different from offspring) with modification will occur.
Back
parasitism
Front
ecological relationship in wich one organism benefits y harming the other
Back
descent with modification
Front
The other meaning of evolution referred to structural change in a species that took place over time
Back
Haploid
Front
(genetics) an organism or cell having only one complete set of chromosomes;
n - where n is the number of chromosomes
Back
Survival of the fittest
Front
evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success.
Back
Chargaff's Rule
Front
equal amounts of adenine bonds with thymine and equal amount of guanine bonds with cytosine
Back
Mitochondria
Front
Powerhouse of the cell, produces energy (ATP) from oxygen and sugar(Cellular respiration); respiration takes place here
Back
Homologous structures
Front
Are structures that derive from the same body part but may have different forms, i.e. bird wing, bat wing, human arm
Back
Evolution
Front
change in a species over time
Back
Genes
Front
sequence of DNA that codes for a protein and thus determines a trait
Back
host cell
Front
an animal or plant on or in which a parasite or commensal organism lives.
a living cell in which a virus multiplies
Back
antibiotics
Front
chemical that kills or slows the growth of bacteria
Back
abiotic factor
Front
nonliving factor in an ecosystem ,such as moisture,air,water,minerals
Back
ecosystem
Front
collection of organisms and nonliving things , such as climate , soil, water, rocks, in an area
Back
biodiversity
Front
variety of life in an area. Biodiversity is a measure of the number and types of organisms that live in an ecosystem
Back
Alleles
Front
different forms of a gene
Back
Chromosomes
Front
threadlike structures made of DNA molecules that contain the genes
Back
Diploid
Front
cell with two of each kind of chromosome; is said to contain a diploid, or 2n, number of chromosomes;2n-where n is the number of chromosomes
Back
habitat
Front
combined biotic and abiotic factors found in the area where an organism lives
Back
ecology
Front
study of interactions among living things and their surroundings
Back
DNA
Front
deoxyribonucleic acid, the material that contains the information that determines inherited characteristics;
Base pair matching is:
Adenine bonds ONLY with Thymine,
Thymine bonds ONLY with Adenine,
Cytosine bond ONLY with Guanine,
Guanine bond ONLY with Cytosine
Back
biotic factors
Front
living things
Back
fitness
Front
measure of an organisms ability to survive and produce offspring relative to other members of a population
Back
Cell Wall
Front
strong layer around the cell membrane in plants, algae, and some bacteria
Back
DNA Replication
Front
The DNA double helix strand separates and becomes a template for a new and identical strand. As the strand separates each A pairs with a T and T pairs with an A while each C pairs with a G and each G pairs with a C. If the original was ACTCAG then the new strand would be TGAGTC.
Back
vaccine
Front
substance that stimulates an immune response, producing acquired immunity without illness or infection
Back
transpiration
Front
release of vapor through the pores of the skin or the stomata of plant tissue
Back
consumer
Front
organism that obtains its energy and nutrients by eating other organisms
Back
Dominance
Front
an organism with a dominant allele for a particular form of a trait will always exhibit that form of the trait. (ex. Bb ---The big B would be dominant; Allele which masks the presence of a recessive Ex: AA or Aa
Back
species
Front
group of organisms so similar to one another that they can breed and produce fertile offspring
Back
ribosome
Front
organelle that links amino acids together to form proteins
Back
trophic level
Front
level of nourishment in a food chain
Back
extinction
Front
elimination of a species on earth
Back
Meiosis
Front
(genetics) cell division that produces reproductive cells in sexually reproducing organisms;
One cell makes two gamete cells
2n -> n
Back
Homozygous
Front
Both alleles are the same (TT) for homozygous dominant or (tt) for homozygous recessive (I used the letter T for an example only. This could be any letter)
Back
community
Front
collection of all of the different populations that live in one area
Back
Heterozygous
Front
Alleles are different (Tt)
Back
virus
Front
infectious particle made only of a strand of either DNA or RNA surrounded by a protein coat
Back
DNA vs RNA
Front
DNA, sugar is deoxyribose, two strands, base - thymine
RNA, sugar is ribose, one strand, base - uracil, only molecule to enter or leave the nucleus
Back
Section 2
(22 cards)
Mitosis
Front
One cell makes two cells exactly like the first cell; process by which the nucleus and duplicated chromosomes of a cell divide and are evenly distributed, forming two daughter nuclei
Back
Stomatic
Front
any body cell expect for sex cells
Back
Parasites
Front
Live off of a host and will eventually cause the death of the host
1. DNA (chromosomes) unwinds and is duplicated
2. Chromosomes line up in the center of the cell
3. Centromeres separate
4. Single stranded chromosomes move to opposite ends of the cell
5. A nuclear membrane forms around each set of new chromosomes
Back
Survival of the Fittest
Front
process by which individuals that are better suited to their environment survive and reproduce most successfully; also called natural selection; One who has most surviving off spring most fit.
Back
Respiration
Front
Animal cells turn carbohydrates, water and oxygen into energy. Waste product is carbon dioxide.
Back
Ribosomal RNA (rRNA)
Front
aids in protein formation.
Back
Recessive
Front
of genes; Two recessive alleles in order for genotype to be expressed.
Ex: aa
Back
Plant cells
Front
Contain chloroplasts (photosynthesis sites) and vacuoles (water storage areas) that are not found in animal cells
Back
Succession
Front
(ecology) the gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another until a stable climax is established
Back
Primary producers
Front
Are plants and they provide most of the food and oxygen;
the first producers of energy-rich compounds that are later used by other organisms
Back
Transfer RNA (tRNA)
Front
reads the sequence of mRNA and structs the ribosome to assemble new proteins from amino acids that match. tRNA moves the amino acids and proteins around into the right places.
change in a DNA sequence that affects genetic information; can passed on to offspring if they occur in the gametes
Back
Natural Selection
Front
Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest
Back
Photosynthesis
Front
Plant cells turn sunlight, carbon dioxide and water into carbohydrates
Back
Photosynthesis
Front
How most food and oxygen on earth are produced; the energy comes from the sun
Back
Ribosome
Front
small particle in the cell on which proteins are assembled; made of RNA and protein; where amino acids are made into proteins
Back
Nucleus
Front
a part of the cell containing DNA and RNA and responsible for growth and reproduction
Back
RNA
Front
(biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes
In RNA, A pairs with U and C pairs with G. At this point the base Uracil is put in place of Thymine (so A now bonds only with U).