Term
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Definition
-breaking things down, exergonic (releases energy), negative change in G
-respiration
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Term
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Definition
-building things up, requires energy- endergonic, positive change in G
-photosynthesis |
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Term
Major Essential Elements of Life |
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Definition
-Carbon, Nitrogen, Oxygen, Hydrogen
-96% |
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Term
Minor Essential Elements of Life |
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Definition
Potassium (K), Phosphorous (P), Calcium (Ca), Sulfur (S)
-4% |
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Term
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Definition
atoms of same element with different numbers of neutrons |
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Term
In water, Hydrogen Bonds are formed |
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Definition
between the negatively charged Oxygen of on water molecule and the positively charged hydrogen of an adjacent molecule |
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Term
The Buffering System in human blood (pH 7.4) can be described with the reaction: |
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Definition
H2CO3 -> HCO3- + H+
-when the pH of blood decreases, the reaction proceeds to the left, forming more H2CO3 |
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Term
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Definition
-not polymers.
-fats, steroids, phospholipids(cell membrane),
-for energy storage |
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Term
saturated vs unsaturated fats |
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Definition
-saturated fats have no double bonds. ex animal fats
-unsaturated fats have some double bonds. ex plants, fish, oils |
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Term
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Definition
-dehydration makes bonds,
-hydrolysis breaks bonds |
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Term
Which type of molecules would diffuse most rapidly across a plasma membrane? |
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Definition
small hydrophobic molecules |
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Term
Cytoskeleton (of eukaryotes) |
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Definition
-made of microfilaments, microtubules, intermediate filaments
-involved in support and cellular motility |
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Term
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Definition
-in the nuclear envelope
-allow for regulated movement of materials between cytoplasm and nucleus |
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Term
Surface area to volume ration |
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Definition
-decreases as cell gets larger
-surface area determines what can enter/leave the cell
-volume determines metabolic activity |
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Term
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Definition
it provides energy for cellular processes by coupling endergonic and exergonic rxns |
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Term
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Definition
-catalyze reactions by lowering the activation energy
-affected by temp, pH, competitive & noncompetitive inhibitors |
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Term
Inputs and Net Products of Glycolysis |
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Definition
-inputs: 1 glucose, 2 ATP, (enzymes hexokinase and phosphofructose kinase used also)
-net products: 2 pyruvate, 2 ATP, 2 NADH |
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Term
Net Products of Oxidative Phosphorylation |
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Definition
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Term
3 steps of cell communication (in order) |
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Definition
1 reception
2 transduction
3 response |
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Term
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Definition
-an enzyme that transfers phosphorous from ATP to proteins,
-common type of signal transduction (phosphorylation & dephosphorylation) |
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Term
Modes of Prokaryotic Reproduction |
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Definition
-binary fission (asexual)
-conjugation with sex pilus, transformation, transduction |
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Term
Light Reactions of Photosynthesis
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Definition
-take place in thylakoid
-convert light energy from excited photon to chemical energy
-produce ATP and NADPH *HOW MANY????????*
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Term
Dark Reactions (Calvin Cycle) |
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Definition
-in stroma, convert CO2 to sugar using ATP and NADPH from light rxns
-fixation, reduction, regeneration
-9 ATP and 6 NADPH used to produce 1 G3P net |
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Term
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Definition
-the enzyme that catalyzes the reaction where CO2 is joined to the 5C sugar creating the 6C intermediate in the 1st step (fixation) of the calvin cycle
-most abundant protein on the planet |
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Term
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Definition
-in cytosol
-2 phases = energy investment & energy payoff
-investment: 2 ATP used, P added to each end of 6C glucose molecule
-payoff: it splits in half, 2 NAD+ -> 2NADH and 2 ADP-> 2ATP
result: 2 pyruvate, 2 ATP, 2 NADH
-part of both cellular respiration & fermentation |
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Term
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Definition
-links glycolysis and the citric acid cycle
-3C pyruvate loses 1 C to become CO2,
-NAD+ -> NADH
-coA attaches to the 2C to form acetyl coA |
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Term
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Definition
- in mitochondria
-coA removed, 2C attached to 4C molecule, forming 6C citrate
-loses 2 C to form 2 CO2 molecules
-2 ATP produced per glucose molecule |
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Term
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Definition
-respiration without oxygen or electron transport
-in cytoplasm
-glucose is broken into 2 pyruvate,
-2NADH, 2 ATP, and lactic acid or ethanol are formed |
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Term
Oxidative Phosphorylation |
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Definition
-NADH takes electrons to the transport chain, transferred between carriers, oxidized & reduced
-energy is transferred from electrons to Hydrogen ions across the membrane forming gradient
-H+ flow back down thru ATP synthase, ATP pumped out
-32-34 ATP PRODUCED |
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Term
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Definition
-similarity due to shared ancestry |
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Term
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Definition
-similarity due to convergent evolution: similar environmental pressures & natural selection leading to similar adaptations |
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Term
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Definition
- all 3 domains
-energy source = light
-carbon source = CO2 |
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Term
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Definition
-bacteria
-energy = light
-carbon = organic compounds
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Term
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Definition
-bacteria & archaea
-energy = organic compounds
-carbon = CO2 |
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Term
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Definition
-all domains
-energy= organic compounds
-carbon= organic compounds |
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Term
types of plants that produce swimming sperm |
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Definition
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Term
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Definition
the triploid nutritive tissue in angiosperms |
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Term
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Definition
have 2 types of sporangia that produce 2 types of spores: megasporangia (egg) and microsporangia (sperm) |
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Term
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Definition
organisms that can obtain carbon nutrition by either photosynthesis or ingestion of an organic compound |
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Term
Alternation of Generations |
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Definition
-gametophyte generation (n) includes mitosis
-sporophyte generation (2n) includes meiosis |
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Term
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Definition
the type of green algae that is most closely related to land plants
-relationship indicated by cell division via cell plate and phragmoplast |
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Term
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Definition
-mutual relationship between plant and fungus
-plant provides sugars to the fungus, fungus aids the plant in the uptake of water/mineral nutrients |
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Term
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Definition
Forces water and minerals that are moving through the apoplast in the root cortex to cross the plasma membrane of an endodermis cell before entering the vascular cylinder in the roots
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Term
Long distance transport of water via the adhesion/cohesion mechanism is influenced by |
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Definition
-evaporative loss of water from mesophyll cells,
-transpirational pull
-adhesion of water molecules to hydrophillic walls of tracheids and vessel elements (xylem) |
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Term
non photosynthetic parasitic plants |
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Definition
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Term
why are gymnosperms given their name ("naked seed") |
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Definition
gymnosperm ovules are not contained in a carpel |
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Term
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Definition
-exudation of water droplets on surfaces of leaves
-caused by positive water pressure in roots |
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Term
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Definition
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Term
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Definition
embryonic leaves/diploid nutritive tissue |
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Term
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Definition
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Term
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Definition
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Term
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Definition
-secondary xylem produced by vascular cambium |
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Term
meaning/reason for name Archaeplastida |
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Definition
-"ancient plastid"
-the group in which chloroplasts were originated by primary endosymbiosis: a eukaryote engulfing a photosynthetic prokaryote and it stabilizing |
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Term
basidiomycete or ascomycete life cycle |
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Definition
-contains a dikaryotic phase where karyogamy is delayed so 2 haloid nuclei exist for a period |
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Term
Possible causes of Cambrian Explosion |
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Definition
-diversification of Hox genes
-increased predator-prey relationships |
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