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80 Cards in this Set
- Front
- Back
What is free energy? |
The ability for a system to do work |
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In a spontaneous change does the energy decrease or increase? |
Decrease |
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Exothermic reaction ______ free energy and is ______ |
Releases, spontaneous |
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Endothermic reaction ______ free energy and is _______ |
Absorbs, nonspontaneous |
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Oxidation |
Substance loses an electron |
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Reduction |
Substance gains an electron |
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In respiration O2 is _____ |
Reduced to H2O |
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In respiration glucose is _____ |
Oxidized to CO2 |
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Glycolysis |
Breaks down glucose into 2 molecules of pyruvate |
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Citric acid cycle |
Completes break down of glucose |
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Oxidative phosphorylation |
ATP synthesis |
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Two phases of glycolysis |
Energy investment phase Energy pay off phase |
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Glycolysis occurs in the _____ |
cytoplasm |
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Citric Acid Cycle produces ____, ____, and _____ |
ATP, NADH, and FADH2 |
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Respiration sequence |
Glucose ---> NADH ---> Electron transport chain ---> proton motive force ---> ATP |
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In photosynthesis _____ is reduced and _____ is oxidized |
CO2, H2O |
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Light reactions happen in the _____ |
Thylakoids |
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Calvin Benson Cycle happens in the _____ |
Stoma |
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Four parts of the light reactions |
1) Splits H2O 2) Releases O2 3) Reduces NADP+ to NADPH 4) Produces ATP, ADP |
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Calvin Benson cycle takes in _____ and releases _____ |
CO2, and glucose |
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Chloroplasts reflect what color light? |
Green |
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_____ absorbs the light in the chloroplasts |
Granum |
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3 stages of the Calvin Benson cycle |
1)Carbon fixation 2)Reduction 3)Regeneration of CO2 acceptor |
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What do C3 plants do? |
Initiate fixation of CO2 |
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What do C4 plants do? |
Use compartmentalization to "pump" CO2 |
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Crassulacean Acid metabolism, causes plants to... |
Open stomata at night, and close stomata during the day |
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What is a cuticle? |
Waxy layer to protect the plant, helps to keep water in and keep harmful substances out. |
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Byrophytes are... |
Non-vascular plants |
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Three types of byrophytes are... |
1)Liverworts 2)Hornworts 3)Mosses |
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Two types of vascular plants are... |
1) Seedless 2) Seed |
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Mosses live in what kind of enviroment? |
Wet, rainy |
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Which is the larger generation? Gameophytes or Sporophytes? |
Sporophytes |
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The xylem does what? |
Moves water and minerals though the plant. |
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The phloem does what? |
Moves sugars, amino acids and other organic products though the plant. |
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What are two things roots do for plants? |
Anchor the plants and absorb water and nutrients |
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Leaves do what for a plant? |
Increase the surface area to absorb more light energy. |
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Microphylls are... |
Leaves with one single vein |
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Megaphylls are... |
Leaves with a large branchlike vascular system |
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Sporophylls are... |
Leaves with sporangia on them |
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Homosporous production produces.... |
A single bisexual spore that produces eggs and sperm |
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Heterosporous production produces... |
Megaspores to produce eggs and microspores to produce sperm |
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A seed consists of... |
An embryo surrounded by nutrients covered in a protective coat |
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Megaspores give rise to... |
female gameophytes |
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Microspores give rise to... |
male gameophytes |
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The ovule consists of... |
Megasporangia, megaspore and protective integuments on the sporophyll |
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Microspores develop into what? |
Pollen grains |
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Do the sperm in gymnosperms and angiosperms have flagella? |
No. |
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3 advantages of seeds? |
1) Remains dormant until conditions are right 2) Dispersed in a variety of ways - wind, water, animals 3) Stored food supply |
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4 phyla of gymnosperms |
1) Cycadophyta 2) Gingkophyta 3) Gnetophyta 4) Coniferophyta |
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Which phyla is the largest of the gymnosperms? |
Coniferophyta |
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What are chytrids? |
Fungi that live in water, with flagellated spores. |
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What are zygomycetes? |
Bread and fruit molds |
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What are pilobolus? |
zygomycetes that point their sporangia toward the light. |
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What are Glomeromycetes |
arbuscular mycorrhizae |
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What are mycorrhizae? |
"fungus roots" |
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Where do ectomycorrhizae fungi grow? |
around the roots of plants |
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Where do endomycorrhizae fungi grow? |
Inside the roots, penetrating the cell wall of other plants |
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What are ascomycetes? |
Live in water, produce saclike asci containing ascocarps, "sac fungi" |
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What are basidiomycetes? |
mushrooms, puffballs and shelf fungi, decomposers of wood |
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What do mycorrhizae do for other plants? |
Increase plant productivity |
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What does fungi do for animals? |
Helps break down plant material |
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Three anions in soil |
1) Nitrate 2)Phosphate 3)Sulfate |
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Three Cations in soil |
1)Magnesium 2)Calcium 3)Potassium |
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Anions leach out of soil into ground water True or false? |
True |
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3 things in fertilizers? |
1)Nitrogen 2)Phosphorus 3)Potassium |
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A deficiency of a mobile nutrient does what? |
Affects older organs rather than young ones |
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A deficiency of a less mobile nutrient does what? |
Affects younger organs than old ones |
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Define Transcription regulation |
transcription factors control transcription of genes |
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Define post-translational modification |
activation of existing proteins in signal response |
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Hormones cause what? |
Tropisms |
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The auxin hormone does what? |
Cell elongation |
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Cytokinins do what? |
stimulate cell division and differentiation |
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Gibberellins do what? |
Stem elongation, fruit growth and germination |
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Brassinosteriods do what? |
induce cell elongation and division in plants |
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Abscisic acid does what? (ABA) |
Seed dormancy and drought tolerance |
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Plants produce _______ in response to stress |
Ethylene gas |
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Plants also produce ethylene gas when? |
Fruit ripening |
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Blue light photoreceptors control what three things |
1)hypocotyl elongation 2)stomatal opening 3)phototropism |
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Red light photoreceptors control what |
Seed germination, Shade avoidance, time of day/seasons |
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Thigmotropism is |
growth in response to touch, vines growing up a stick |