Create an account
process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria
monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
principle that bonds in DNA can form only between adenine and thymine and between guanine and cytosine
granular material visible within the nucleueus: consists of DNA tightly coiled around proteins
enzyme that profreads new DNA strands, helping to ensure that each molecule is a neraly perfect copy of the original DNA
RNA molecule that carries copies of instructions for the assembly of amino acids into proteins from DNA to the rest of the cell
process in which part of the nucleotide sequence of DNA is copied into a complementary sequence in RNA
enzyme similar to DNA polymerase that binds to DNA and separates the DNA strands during transcription
scanning electon microscopes shine a narrow beam of electrons BACK AND FORTH a thin specimen's SURFACE
transmission electron microscope shines a beam THROUGH a specimen and gives a detailed picture of the INSIDE of a cell
smallest unit of matter consisting of protons(positive charge), neutrons(neutral charge), electons(negative charge)
main source of energy in living things are made up of compounds made of carbon, hydrogen and oxygen atoms
large group of organic compounds that make up fats, hormones, and building blocks of the cell membrane
all living things are composed of cells and all new cells are produced from existing cells
cells that contain a nucleus in which their genetic material is separated from the rest of the cell, except bacteria
contains nearly all of the cells DNA and with it the coated instructions for making proteins and other important molecules
organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis
consists of adenine, a 5-carbon sugar called ribose, and 3 phosphate groups, also high energy bonds between the 2nd and 3rd phosphate groups
mutation that affects a single nucleotide, usually by substituting one nucleotide for another
an analysis of sections of DNA that have little or not function, but vary widely from individual to another in order to identify individuals
specific characteristiv, such as seed color or plant height, that varies from one individula to anoth
two tiny structures located in the cytoplasm near the nuclear envelope seperate and take up position on opposite sides of the neucleus
centromeres that join the sister chomatids split, allowing the sister chromatids to separate and become individual chromosomes
Fourth and final phas, Chromosomes which were distinct and condensed, begin to disperse into a tangle of dense material
a disorder in which some of the bodys own cells loses the ability to control growth is one such such example
each of teh 4 chromosomes that came from the male parent has a corresponding chromosome from the female parent
a process of reduction division in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell
in prophase of meiosis 1, each chromosome pairs with its corresponding homologous chromosome to form a tetrad
When homologous chromosomes pair up and form tetrads in meiosis 1, they exchang portions of their chromatids in a process called crossing-over
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together