12 The ' sequence ', or order of amino acids in a protein is termed its ____________, whereas the 3-dimensional structure of a two proteins interacting with each other is termed its ____________.
13 Other that their pH , how would you differentiate between an acid and a base ? Give and example of each ?
14 Of the following , which is the first explanation of a problem ? It is sometimes called an " educated testable guess ."
15 ________ mechanisms are designed to accelerate or enhance the output created by a stimulus that has already been activated .
16 Which element is present in all organic compounds ?
17 The instructions for growth , development , metabolism , and reproduction of a cell are contained in :
18 Homer notices that his shower is covered in a strange green slime . His friend Barney tells him that coconut juice will get rid of the green slime . Homer sprays half of the shower with coconut juice ad he sprays the other half with water . What is the control set-up in this experiment ?
19 A student wanted to look at plant growth in five different soil samples . He planted the same type of seeds in identical containers and left them together in full sunlight . He gave each plant the same amount of water and charted the growth of each plant stem . What is the independent variable in this experiment ?
20 You want to measure the effect of different amounts of oxygen on the rate of yeast growth . What is the dependent variable ?