BIO 103 Q&A Bundle

nuclear envelope the double membrane that surrounds the nucleus of a eukaryotic cells and is connected to the endoplasmic reticulum; has pore that allow substances to pass between the nucleus and the cytoplasm nucleoplasm semifluid medium of the nucleus containing chromatin nucleolus dark-staining...

Endosymbiosis a mutually beneficial relationship in which one organism lives within another advantages of multicellularity 1. Organization of many cells into a single mass reduces SA to V ratio 2. Permits subdivision of labor amongst different tissues (specialization) origins of multicellularity 1...

What are the characteristics of all living things? organization, acquisition of materials and energy, homeostasis, response, reproduction and development, adaptable What is the smallest unit of life cell what is a metabolism all reactions in a cell · What are the levels of organization of living...

natural selection? a proposal that death, due to limited food supply, restricts population size What organisms were involved in Charles Darwin's studies on the Galapagos Islands? finches The unifying concept of biology suggests that all living things are descended from a common ancestor as a resu...

Metabolism all chemical reactions in the body Types of metabolic pathways catabolic and anabolic Catabolic pathways Large molecules are broken down into small ones. Energy is released. Anabolic pathways Small molecules are assembled into large ones. Energy is required Catabolic equation Respirat...

What did Carl Sagan mean when he said we are all made of star stuff? ~Living things are composed of the same chemical elements as nonliving things ~Obey the same physical and chemical laws that govern everything in the universe Biology the scientific study of life Know the characteristics of life,...

occurs during thermal inversion cold air underlies warmer air at higher altitudes Reduction of the ozone layer will cause increased UV-radiation at ground level body temperature in humans maintained around 37 degrees Celsius homeostasis cultural eutrophication increase in biological productivity ...

1) What are the characteristics of Protists? -Eukaryotic -Some are Unicellular and others are multicellular -Nonmotile and motile species -Aquatic and terrestrial species -Autotrophic (photosynthetic) and heterotrophic 2) Paramecium protist -earlier protist to be described -Unicellular -Not usual t...

What is metabolism? The sum of all of the chemical events performed by a living organism. Its all the things we can possibly do. Two types of metabolism? 1-Anabolism-building. They use energy. 2-Catabolism-breaking down. Energy is released. Definition of Energy. The ability to bring about change o...

Which of these organisms is an egg-laying mammal? Duck-billed platypus Koala Elephant Zebra Opossum Duck-billed platypus Which of the following is False? both monkeys and apes are anthropoids lorises, lemurs, tarsiers, monkeys and apes are all in the primate family new world monkeys have nostrils t...

Evolution is a genetic change in ____ that occurs over time. population the islands where Charles Darwin observed variation among organisms and compared them to those organisms found on the mainland were the: Galapagos islands Evolutionary modifications that improve the survival and reproductive s...

Which statement is true about the nitrogenous base composition of double-stranded DNA? A. the percentage of A+T = the percentage of G+C B. both of the above statements are true C. the percentage of A+G = the percentage of T+C C. the percentage of A+G = the percentage of T+C The arrow on the bottom ...

What is the difference between a tissue and an organ system? A) The tissue level of organization is more inclusive than the organ system level. B) Tissues are not composed of cells; organ systems are composed of cells. C) A tissue cannot exist unless it is a component of an organ system, whereas an ...

What are the 3 domains? Bacteria, Archaea, Eukarya Charles Darwin's Natural Selection -Individuals with heritable traits best suited to the environment are more likely to reproduce. -As a result, future generations will have advantageous traits. (Evolutionary adaptation) Which 4 elements make up ...