Short Answrs Flashcards
5/8 characteristics of living things and examples of the characteristics
-dog
how do we depend on living things?
-we need food to live, fiber to keep us warm, and relationships with other living things to keep us happy contributes to our need for survival and understanding of how we depend on living things.
Biological careers: How do they improve human life? why is it important to Saskatchewan?
microbiologist
-they are important to human life because they play key roles in nutrient cycling, maintaining ecosystem stability, and they are essential to human’s processes such as digestion and immunity.
-they are important to saskatchewan because they play an important role in ensuring food safety and researching beneficial microbes for crop production
Biological careers: How do they improve human life? why is it important to Saskatchewan?
environmental biologist
-they are important to human life because it performs research about environmental health, ecosystem preservation, and natural resource management to develop solutions to protect the environment and human health.
-they are important to saskatchewan because they monitor and assess the province’s ecosystem, provide important information to manage resource development, and protect sensitive habitats.
How did early photosynthetic organisms help the evolution of species?
-it increases the amount of oxygen in the atmosphere, which allowed for the evolution of a more complex life forms.
Growth vs development
-GROWTH results to the addition of mass to an organisms and some of them are able to form new cells and new structures.
-DEVELOPMENT is the process of natural changes that take place during the life of an organism
Spontaneous generation vs biogenis
-SPONTANEOUS GENERATION states that life arises from non-life
-BIOGENESIS states that only living things can produce other living organism.
Observation vs inferences
-OBSERVATION is a direct method of gathering information in an orderly way.
-INFERENCE is the logical conclusion based on gathered information
Origin of life theories (which is most persuasive)?
primodial soup hypothesis: why? relation to clay surfaces?
-early hypothesis about origin of life
-it provides information for how building blocks of life (amino acids) could have formed under conditions likely present on Earth.
-caly surface played a key role by providing surface where amino acids could come together and form proteins, acting like a natural support to speed up assembly process.
Origin of life theories (which is most persuasive)?
hydrothermal vents in the deep sea: why? relation to clay surfaces?
-belief that life begins here and sulfur is the source to make base of food
-they provide heat, mineral-rich environments, and chemical energy needed to support the formation of complex organic molecules and early life forms.
-caly surfaces contributed to the theory by attracting and holding amino acids, which helps them bond together.
Origin of life theories (which is most persuasive)?
panspermia: why? relation to clay surfaces?
-meteorites brought the first organic molecules to Earth
-it provides explanation for how life’s essential components could have originated elsewhere in the universe and delivered to Earth, explaining how life began despite Earth early harsh conditions.
-clay surfaces could have helped essemble amino acids into proteins by providing a stable environment for chemical reactions to occur, potentially supporting the formation of early life.
