Phototropism - Study guides, Class notes & Summaries

AQA A Level Topic 6 Organisms and response Stimulus A change in an organism's surroundings that causes the organism to react Receptor Detect stimulus. Specific to one type of stimulus. Effector an organ or cell that acts in response to a stimulus. Stimulus response pathway Stimulus - receptor - coordinator - effector - response taxis Movement toward or away from a stimulus. Direction of response determined by direction of the stimulus. positive taxis negative taxis Photota...

ISA Arborist Certification Exam Questions and Answers Graded A+ response growth - ANSReaction wood or additional wood grown to increase the structural strength of the trunks; note location and extent. meristem - ANSa region of plant tissue, found chiefly at the growing tips of roots and shoots and in the cambium, consisting of actively dividing cells forming new tissue. Apical - ANSat the end of the branch apical dominance - ANSConcentration of growth at the tip of a plant shoot, where a ...

DAT Exam Study Guide Verified compound interest - CORRECT ANSWER30 60 90 triangle 45 45 90 triangle - CORRECT ANSWERSolubitlity Rules - CORRECT ANSWER-1) group 1, NO3-, NH4+, ClO4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt insoluble (exept when paired with above). Plant Hormones (A CAGE) - CORRECT ANSWER-Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inhibitor. delay growth...

compound interest - ANS 30 60 90 triangle 45 45 90 triangle - ANS Solubility Rules - ANS 1) group 1, NO3-, NH4+, ClO4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt is insoluble (except when paired with above). Plant Hormones (A CAGE) - ANS Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inhibitor. delay growth. Gibberellins: cell ...

Eukaryotic cells evolved when an ancestral host cell, probably a ____________ formed a mutualistic, endosymbiotic relationship with ______________ - Answer-Archaean; an alphaprotobacteria Snowball Earth Hypothesis suggests the hardened, spiny exoskeleton evolved as a result of: - AnswerRelease of calcium after global glaciations You find a colony of single celled organisms that are living (thriving and reproducing) in an extreme environment, such as an alkaline or reducing environment. Which...

Compound interest - ACCURATE ANSWERS 30 60 90 triangle 45 45 90 triangle - ACCURATE ANSWERS Solubitlity Rules - ACCURATE ANSWERS 1) group 1, NO3-, NH4+, clo4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt insoluble (exept when paired with above). Plant Hormones (A CAGE) - ACCURATE ANSWERS Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inhibitor. Delay growth. Gibb...

What are plant growth factors and where are they produced? - Answer ● Chemicals that regulate plant growth response to directional stimuli. ● Produced in plant growing regions (apical meristems). ● Diffuse from cell to cell/ phloem mass transport. Explain why shoots show positive phototropism. - Answer 1. Indoleacetic acid (IAA) diffuses to shaded side of shoot tip. 2. As IAA diffuses down shaded side, it causes active transport of H+ ions into cell wall. 3. Disruption to H...

Agonist - Competitive inhibition, binds to active site and causes a signal response in receptive tissue. Antagonist (blocker) - Competitive inhibitor, binds to active site so signal molecules cannot bind but causes no response in receptive tissue, can bind and release eventually. Apply your understanding of channels and synapses to predict how various neurotoxins affect nervous function. - Neurotoxins block receptor proteins on the post-synaptic neuron. Example: tetrodotoxin form Fugu fish...

PICAT EXAM QUESTIONS WITH COMPLETE SOLUTIONS VERIFIED GRADED A+ Which of the following experimental result demonstrates phototropism Stems of plants turned towards the dark area of a room will bend towards the window What is a measuring unit for the pressure of liquid? Pounds per square inch Which occupation would most likely be involved in genome mapping? Geologist What are the names of the substances involved in a chemical reaction? Reactant and products What gas is a primary by p...

compound interest - 30 60 90 triangle 45 45 90 triangle - Solubitlity Rules - 1) group 1, NO3-, NH4+, ClO4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt insoluble (exept when paired with above). Plant Hormones (A CAGE) - Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inhibitor. delay growth. Gibberellins: cell growth Ethylene: gas, ripen fruit and leaf abscission