Bio 1m03 Study guides, Class notes & Summaries

McMaster Bio 1M03: Exam 2024/2025 Questions with all the correct Answers (Real Actual Exam). Why might Pasteur's experiment be inconclusive? - ANS - 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? - ANS - To ensure that results were not achieved by random chance What is the definition of a replicate? - ANS - Unit that shares a c...

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 succession suggest? - As one species disap...

Ecology - Answer The study of how living things interact with each other and their environment - Environments are changing more rapidly now than they have at any time in the past - Efforts to maintain human health and welfare depend on our ability to cope with these environmental changes - Most synthetic field in biology Primary goal of Ecology - Answer To understand the distribution and abundance of organisms 4 Main Levels of Ecology - Answer 1) Organisms 2) Populations 3) Commun...

Deductive Thinking - Answer - science proceeds by advancing hypotheses and comparing them to facts. - facts can be observed from nature, or we can construct experiments to test specific hypotheses Thinking Conceptually - Answer - logical interpretation and inference is simple, but not always easy - being on familiar grounds helps us think clearly Logical Equivalence - Answer - if they express the same fact in different words. In other words, if either one is true, the other one must be...

Population - Answer - a group of individuals from the same species that occupy an area of space at the same time - can produce viable offspring - uses the same resources and are affected by similar factors Ecology - Answer - the study of how organisms interact with their environment What is population ecology? - Answer - measures changes in population size, pop composition - identifies factors that cause changes in population - studies how and why a population changes over tiime -IMP ...

McMaster Bio 1M03: Exam 2024/2025 Questions with all the correct Answers ;( Real actual exam) Why might Pasteur's experiment be inconclusive? - Correct 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? - Correct Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Correc...

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 genetic, developmental, and structural levels. D) Populations living today are identi...

McMaster Bio 1M03 UPDATED ACTUAL Exam Questions and CORRECT Answers Why might Pasteur's experiment be inconclusive? - CORRECT ANSWER- The swannecked 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? - CORRECT ANSWER- To ensure that results were not achieved by random chance What is the definition of a replicate? - CORRECT ANSWER- Unit that sh...

Population - Answer - a group of individuals from the same species that occupy an area of space at the same time - can produce viable offspring - uses the same resources and are affected by similar factors Ecology - Answer - the study of how organisms interact with their environment What is population ecology? - Answer - measures changes in population size, pop composition - identifies factors that cause changes in population - studies how and why a population changes over tiime -IMP ...

The origin of mammals occurred in which era? - Answer Triassic Period (252 Ma- 201 Ma) What are some key events that occurred within the Triassic Period? (2 points) - Answer - Pangea supercontinent formed through continental drift. - Therapsida groups had evolved within vertebrates Therapsida groups had increased metabolic rate inferred through: ___________________ (3 points) - Answer - upright posture (relative to reptiles) - muscular diaphragm for enhanced breathing - breathing while ...