Bio 150 exam stuvia - Study guides, Class notes & Summaries

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 ...

Convergent vs Divergent Evolution - ANSWER -Divergent: one broad class but because of different features they diverge -Convergent: similar features between

Hierarchy of Complexity - ANSWER Atom Molecules Organelles Cells Tissue Organ Organ System Organism Molecules - ANSWER Particle composed of at least two atoms Organelles - ANSWER Microscopic structures in a cell that carry out individual functions Cells - ANSWER Smallest unit of an organism that carry out basic functions of life Tissue - ANSWER Mass of similar cells that form an organ and preform a specific function Organ - ANSWER Structure composed of two or more tissue ty...

BIO 669 Exam 1 EC Questions with Correct Answers Hypotension, tachycardia and low urine output are signs of - ANSWER-hypovolemia 7.36 ph, high CO2 and high bicarbonate indicates - ANSWER-fully compensated respiratory acidosis If water consists of 60% of TBW. Choose and assign corresponding percentages (40, 5,15 and 20). ICF = ECF= Interstitial = Intravascular = - ANSWER-ICF=40; ECF=20; Interstitial = 15 and Intravascular = 5 Adaptive Immunity is programmed to respond to damage to the bo...

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...

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 concentrations same inside and outside - ANSWER ...

What statement best distinguishes scientific hypotheses from scientific theories? - ANSWER Hypotheses are usually narrower in scope; theories have broader explanatory power. A controlled experiment ____________. - ANSWER includes at least two groups, one of which does not receive the experimental treatment In trying to determine whether DNA or protein is the genetic material, Hershey and Chase made use of which fact? - ANSWER DNA contains phosphorus, whereas protein does not. In analyzi...

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...

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...

Anton van Leeuwenhoek - ANSWER Linen merchant that discovered the first microscope and saw living cells Oswald Avery - ANSWER Worked with strains of Pneumonia to determine genetic changes Robert Koch - ANSWER Correlated specific microbes with infections Gregor Mendel - ANSWER Worked with pea plants to show heredity patterns Carolus Linnaeus - ANSWER Zoologist that created the current naming system Alfred Hershey and Martha Chase - ANSWER Worked with bactiophage to show that DNA no...