Bio 150 - Study guides, Class notes & Summaries

Define biodiversity - ANSWER the diversity of plant and animal life in a particular habitat (or in the world as a whole) Define genetic diversity - ANSWER the total genetic information contained within all individuals of a species, population, or community Why is genetic diversity important? - ANSWER provides the raw materials for adaptive change Define adaptive change - ANSWER change in response to the environment's "natural selection: Define species diversity - ANSWER the diversi...

What is meant by selective toxicity? Correct Answer-Chemotherapeutic agents should act against the pathogen and not the host. Why are chemotherapeutic agents that work on the peptidoglycan cell wall of bacteria a good choice of drug? Correct Answer-Humans and other animal hosts lack peptidoglycan cell walls. Why is polymyxin only used on the skin? Correct Answer-It can also damage living human cell membranes, but the drug is safely used on the skin, where the outer layers of cells are dead...

In controlled experiments: a. one variable is manipulated while others are held constant b. all variables are held constant c. all variables are dependent on each other d. all variables are independent of each other correct answers a A placebo: a. is an urban legend b. reveals that sugar pills can create a positive treatment result c. demonstrates that most scientific studies cannot be replicated d. does not exist correct answers b A hypothesis that is created uses ...

bio 150 final exam Complete Questions & An passive (simple) diffusion - ANSWER -from high to low concentration of solute -no energy required -no membrane protein required if cell is placed in surrounding solution with higher solute concentration then inside the cell, the solution is ____ relative to the cell - ANSWER hypertonic If cell is placed in surrounding solution with lower solute concentration than inside cell, the solution is _____ relative to the cell - ANSWER hypotonic con...

What are the three major objectives of BIO 150? correct answers 1) unifying features of living systems --> ecological to molecular --> diversity and complexity 2) scientific research skills 3) apply knowledge to questions and issues What is ecology? correct answers The diversity of life, evolution, and how organisms interact with each other and the environment What is biology? correct answers The science of living systems! Includes observation, prediction, experimentation, theory...

heat is a form of? a. kinetic tial c. activation d. catalytic - ANSWER a. kinetic An alpha helix is a type of protein_________ structure? a. primary b. seconday c. tertiary d. quartenary - ANSWER b. secondary the cytoplasmic granule of RNA and protein that reads mRNA and synthesizes proteins is called the _________, an organelle that is not bound by a membrane? a. kinetechore b. Golgi complex c. ribosome d. nucleolus - ANSWER c. ribosome ______________ is not found in DN...

Convergent vs Divergent Evolution - ANSWER -Divergent: one broad class but because of different features they diverge -Convergent: similar features between 2 different classes Punctuated Equilibrium vs Gradualism - ANSWER -Punctuated: concrete & defined phenotypes -Gradualism: phenotypes gradually evolve Speciation - ANSWER Formation of new species 1) Allopatric: separated by geographical barrier (mountain, ocean, river) -Barrier divides species 1 and species 2 2) Parapatric...

population - ANSWER an interbreeding (sharing genetic information) group of individuals who live in the same geographic area and exist at the same time variability within a species/population (importance) - ANSWER important because: -some genetic variations have advantages over others -natural selection can act on the variation that arises What if populations are separated and can't exchange genes? - ANSWER two processes can occur: 1. genetic divergence 2. speciation genetic diverg...

In controlled experiments: a. one variable is manipulated while others are held constant b. all variables are held constant c. all variables are dependent on each other d. all variables are independent of each other - ANSWER a A placebo: a. is an urban legend b. reveals that sugar pills can create a positive treatment result c. demonstrates that most scientific studies cannot be replicated d. does not exist - ANSWER b A hypothesis that is created uses which type of ...