For the following quantities, indicate which is a scalar

Biology 8
In his work with pneumonia-causing bacteria and mice, Griffith found that a. the protein coat from pathogenic cells was able to transform nonpathogenic cells. b. heat-killed pathogenic cells caused pneumonia. c. some substance from pathogenic cells was transferred to nonpathogenic cells, making them

Introduction to Probability, 2
A motorist goes through 4 lights, each of which is found to be red with probability 1/2 . The waiting times at each light are modeled as independent normal random variables with mean 1 minute and standard deviation 1/2 minute. Let X be the total waiting time at the red lights. (a) Use the total proba

Anatomy & Physiology 1
Visit this website (http://openstaxcollege.org/l/ electenergy) to learn about electrical energy and the attraction/repulsion of charges. What happens to the charged electroscope when a conductor is moved between its plastic sheets, and why?

Campbell Biology: Concepts & Connections 7
Cows can derive nutrients from cellulose because a. they produce enzymes that recognize the shape of the glucose-glucose bonds and hydrolyze them. b. they rechew their cud to break down cellulose fibers. c. one of their stomachs contains prokaryotes that can hydrolyze the bonds of cellulose. d. their

Principles of Economics 1
Is it true that the four-firm concentration ratio puts more emphasis on one or two very large firms, while the Herfindahl-Hirshman Index puts more emphasis on all the firms in the entire market? Explain briefly.

Biology: Concepts and Applications 10
Where does translation take place in a eukaryotic cell?

Biology 11
Where is chlorophyll located in the chloroplast? (a) thylakoid membranes (b) stroma (c) matrix (d) thylakoid lumen (e) between the inner and outer membranes

Urban Economics 8
Consider the example shown in Figure 21 , with the martini-glass shape showing the net price of the factory product. Suppose all consumers switch to spring-loaded sneakers, decreasing walking time per round-trip mile from 1/12 hours to 1/18 hours. a. The slope of the net-price curve changes to _____