Cards Flashcards
Is the movement of materials across the plasma membrane without the use of cell’s energy
Passive transport
The movement of substances across the plasma membrane from a high concentration to an area of low concentration
Diffusion
The diffusion of water molecules through a selectively permeable membrane from an area of high concentration to lower water concentration
Osmosis
Occurs when a carrier molecule embedded in the plasma membrane transports a substance across the membrane by means of diffusion
Facilitated Transport
Is the movement of materials across a cell membrane that requires energy
Active transport
A process in which a cell surrounds and takes in material from its environment
Endocytosis
A process by which materials (waste) exit the cell BOTH REQUIRE ENERGY!!!!
Exocytosis
Enzymes lowers the ____________ needed to start reactions
Activation level
Enzymes make the process __________
Faster
Enzymes only act on ____ substrate and are not permanently altered or used up in reactions
One
Photosynthesis is part of the __________ cycle
Carbon
DNA nucleic acids are made up of smaller subunits called
Nucleotides
Sugar-ribose, bases-Adenine, Uracil, Guanine, and cytosine; single stranded
RNA
Carries the message from nucleus to cytoplasm (ribosome)
mRNA
Carries amino acids to ribosome
tRNA
Site of protein synthesis
rRNA
DNA makes an exact copy of itself. The two new strands are half original and half new. DNA replication is said to be semi conservative
Replication
DNA->mRNA
Transcription
RNA -> chain of amino acids (protein polypeptide
Translation
Is the branch of biology that studies heredity the passing of on of characteristics from parent to offspring called traits
Genetics
Same TT or tt
Homozygous
Different Tt
Heterozygous
Physical trait ex: blue eyes
Phenotype
Genetic make up BB Bb or bb
Genotypes
Trait shows up in phenotype Aa or AA
Dominant
Trait shows up if homozygous aa
Recessive
The phenotype is determined by the ______________
Genotype
