BIO-181 Homework 1 9-10-21 - Maya Krause PDF

Preview

Summary

This a psychology assignment to assist you in your pay-102 course at Grand Canyon University....

Description

ACTIVITY 1Chapter 1 (SCIENTIFIC THINKING )

NAME: Maya Krause

1. An experimental study is conducted to determine whether a new drug reduces high blood pressure. The change in systolic and diastolic blood pressure values of the participants represents the _____. a. b. c. d. e.

independent variable dependent variable hypothesis theory control group

2. These data are from two enclosures: one with light-colored soil (left), and one with dark-colored soil (right). How many dark brown mice were caught in the light-colored soil enclosure on a moonlit night?

a. b. c. d.

12 17 19 37

3. In this figure above, what is the dependent variable, the response to the variables being tested? a. b. c. d.

the presence or absence of moonlight the mouse coat color the number of mice caught the color of the soil

4. A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are ________. a. testing a theory for why the car will not start b. making observations to inspire a theory for why the car will not start c. stating a hypothesis and using that hypothesis to make a testable prediction d. comparing multiple hypotheses for why the car will not start

5.

Chapter 2 1. What are chemical bonds? Chemical bonds are the forces of attraction that tie two or more atoms together. 2. What determines an atom’s bonding capacity? The bonding capacity of an atom is determined by the number of electrons in its outer orbit. 3. Matching definitions (e ) 1. cation ( b ) 2. hydrogen bond ( h ) 3. anion

a. the final molecules of a chemical reaction b. a covalently bonded H interacts with another electronegative atom

( a ) 4. electronegativity

c. hot spots of positive or negative charge

( i ) 5. Van der Waals interaction

d. transfer of an electron from one atom to another

( f ) 6. reactants

e. a positively charged ion

( d ) 7. products

f. the starting molecules of a chemical reaction

( g ) 8. covalent bond

g. two electrons share a pair of valence electrons

( c ) 9. ionic bond

h. a negatively charged ion i. an atom’s attraction for electrons in a covalent bond

4. What is the difference between polar and nonpolar covalent bond with example The difference between polar and nonpolar covalent bonds are that nonpolar covalent bonds are a type of chemical bond where two pairs of atoms share a pair of electrons with one another, while polar covalent bonding is a specific type of chemical bond where a pair of two or more electrons are both unequally shared between two different atoms. 5. What is an ionic bond?

An ionic bond is an atomic bond that is created from the attraction of two differently charged ions....