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Bio study guide
Terms in this set (45)
building blocks of proteins
Phase of mitosis in which the chromosomes separate and move to opposite ends of the cell
group of three bases on a tRNA molecule that are complementary to an mRNA codon
A cell structure that controls which substances can enter or leave the cell.
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
structure in an animal cell that helps to organize cell division
A structure in animal cells containing centrioles from which the spindle fibers develop.
An organelle found in plant and algae cells where photosynthesis occurs
A specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid
division of the cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended
A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
Movement of molecules from an area of higher concentration to an area of lower concentration.
An enzyme that unwinds the DNA double helix during DNA replication
A system of membranes that modifies and packages proteins for export by the cell
when comparing two solutions, the solution with the greater concentration of solutes
Having a lower concentration of solute than another solution
period of the cell cycle between cell divisions
when the concentration of two solutions is the same
a cell organelle that contains digestive enzymes
All of the chemical reactions that occur within an organism
Chromosomes line up in the middle of the cell
Powerhouse of the cell
monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
Control center of the cell
Diffusion of water through a selectively permeable membrane
eliminates H2O2 (peroxide)
Chromosomes become visable, nuclear envelop dissolves, spindle forms
macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair
Enzyme similar to DNA polymerase that binds to DNA and separates the DNA strands during transcription
Rough Endoplasmic Reticulum
System of internal membranes within the cytoplasm. Membranes are rough due to the presence of ribosomes. functions in transport of substances such as proteins within the cytoplasm
secrete substances outside the cell by exocytosis
Smooth Endoplasmic Reticulum
An endomembrane system where lipids are synthesized, calcium levels are regulated, and toxic substances are broken down.
A substance that is dissolved in a solution.
After the chromosome seperates, the cell seals off, Final Phase of Mitosis.
(genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA
Process by which mRNA is decoded and a protein is produced
transfer RNA; type of RNA that carries amino acids to the ribosome
Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
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