Bio 1m03 Study guides, Class notes & Summaries

Why might Pasteur's experiment be inconclusive? - Answer The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Answer Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of succession suggest?...

McMaster Bio 1M03: Exam | With 219 questions and answers | Latest 2024/25

Why might Pasteur's experiment be inconclusive? - Answer The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Answer Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of succession suggest?...

McMaster Bio 1M03: Exam Questions and Answers A, Guide Why might Pasteur's experiment be inconclusive? The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? To ensure that results were not achieved by random chance What is the definition of a replicate? Unit that shares a common thing (4 mice in one cage = 1 replicate) What ...

BIO 1M03 Comprehensive Exam Questions and Answers with Complete Solution Graded (A+) 1. Darwin described evolution using the phrase "descent with modification." Please select the response that describes most accurately from a modern perspective what the phrase entails. A) Evolution takes a long time - it is a gradual process - and produces decent results. B) Evolution is a natural phenomenon that is ongoing, changing individuals even today. C) Closely related species are similar at the...

McMaster BIO 1M03 PRACTICE TEST Questions and ANSWERS 2024/2024 | All Correct Actual Exam. Which of he folloing aemen ih e pec o he ml i- egional hpohei and he ecen o of Af ica hpohei fo human origins is not accurate? A) Both hypotheses propose an African origin for modern humans. B) The multi-regional hypothesis proposes that modern populations of H. sapiens began diverging from one another over one million years ago. C) According to both hypotheses, Homo heidlebergensis and Homo erectus a...

Criteria for natural selection - Answer variation, heritable, influences fitness natural selection acts on __________ and evolutionary change acts on _____________ - Answer individuals, populations Artificial selection - Answer driven by humans selectively breeding How fast/far can artificial selection go? - Answer FAST -depends on how many genes -how much the phenotype is controlled by the environment FAR -presence of deleterious trade offs -limits of the genetic variation availab...

Cell theory - Answer all organisms are made of cells and all cells come from pre-existing cells Louis Pasteur - Answer designed an experiment to test if cells arose spontaneously or if they were the result of pre-existing cells Evolution - Answer postulates that (a) species are related to one another by common ancestry and (b) species can change through time from generation to generation. Natural selection - Answer process that explains how evolution occurs Fitness - Answer the abil...

McMaster Bio 1M03: Exam | LATEST 2023/24 Why might Pasteur's experiment be inconclusive? - The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - To ensure that results were not achieved by random chance What is the definition of a replicate? - Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of...

Provide examples where evolution is not goal-directed - - Parasites lose complex digestive systems - Finch beaks get larger, then smaller Although N enhances productivity, is too much nitrogen a bad thing? - N runoff can lead to eutrophication, species diversity decreases if organisms thrive in N, N pollution creates acid rain, climate change, depletion of ozone Are non-human animals capable of making decisions that impact their fitness? - No. Cost-benefit...