Bio Final Flashcards
(21 cards)
Mitosis
diploid, one division, daughter cells identical, daughter has 46 chromosomes, growth/repair
Meiosis
haploid, two divisions, daughter cells genetically different, daughter has 23 chromosomes, egg and sperm
Covalent Bonds
A type of chemical bond is formed when two atoms share one or more pairs of electrons.
Ionic
A type of chemical bond formed through the electrostatic attraction between oppositely charged atoms. (one atom donates one or more electrons to another atom
Hydrogen
A type of non-covalent interaction that occurs when a hydrogen atom, covalently bonded to s highly electronegative atom like Nitrogen, Oxygen, and Fluorine
Buffer Solution
Weak acid and its conjugate base or weak base and it’s conjugate acid.
What do buffers function based on
Equilibrium between the weak acid/base and it’s conguate counterpart.
Osmosis
higher water concentration to a lower water concentration and vise versa. water molecules move passively across a semipermeable membrane that allows water to pass.
What affects enzyme activity
Temperature, pH Levels, Substrate Concentration, Enzyme Concentration, and Inhibitors
Phospholipid Structure
hydrophilic-water attracting
hydrophobic-water repelling
Role of Cholesterol
modulating fluidity and stability facilitating the formation of specialized domains critical for various cellular processes.
Active Transport
the movement of substances against their concentration gradient from areas of higher concentration which requires energy input in the form of ATP
Passive Transport
movement of molecules across the cell membrane without the expenditure of cellular respiration.
Prokaryotic cells
bacteria and archaea, nucleus is absent, lack membrane bound organelles, cell wall present
Animal cells
nucleus present, membrane bound organelles, cell wall absent, reproduction
Plant cells
nucleus present, membrane bound organelles, cell wall present, both sexual and asexual reproduction
Light reaction of plants
Thylakoid membranes within the chloroplasts. Captures and convert solar energy into chemical energy in the form of ATP and NADPH.
Dark reaction of plants
Stroma of the chloroplast.Utilize ATP and NADPH to fix carbon dioxide (CO₂) into glucose.
Heterozygous
Rr
Homozygous Dominant
RR
Homozygous Recessive
rr