NUTR 120 Chapter Notes - Chapter 3, 5, 15: Portal Vein, Polyunsaturated Fatty Acid, Gastric Acid
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It's a quiz for my life science class.
QUESTION 1
Organisms that have descended from the same initial group and have the ability to interbreed belong to the same
| A. | species. | |
| B. | family. | |
| C. | class. | |
| D. | genus. | |
| E. | order. |
5 points
QUESTION 2
The simplest entity that exhibits all of the properties of life is called a(n)
| A. | molecule. | |
| B. | cell. | |
| C. | organism. | |
| D. | tissue. |
5 points
QUESTION 3
In populations, adaptation usually arises through
| A. | responsiveness. | |
| B. | heredity. | |
| C. | metabolism. | |
| D. | natural selection. | |
| E. | development. |
5 points
QUESTION 4
Scientists have found that ancient fossils
| A. | are less similar to present-day organisms than more recent fossils. | |
| B. | are just as similar to present-day organisms as more recent fossils. | |
| C. | are more similar to present-day organisms than more recent fossils. | |
| D. | are very similar to present-day organisms. | |
| E. | bear no resemblance to present-day organisms. |
5 points
QUESTION 5
What is the term that describes the study of the relationship between living things and components of their environment?
| A. | herpetology | |
| B. | analogy | |
| C. | zoology | |
| D. | ecology | |
| E. | ichnology |
5 points
QUESTION 6
Characteristics usually associated with life include all of the following except:
| A. | motility. | |
| B. | a high degree of organization. | |
| C. | lack of change from generation to generation. | |
| D. | reproduction. | |
| E. | responsiveness to stimuli. |
5 points
QUESTION 7
The scientific name for the black-footed ferret is Mustela nigripes. The name Mustela indicates the _____________________ to which the organisms belongs.
| A. | phylum | |
| B. | class | |
| C. | family | |
| D. | species | |
| E. | genus |
5 points
QUESTION 8
Which of the following is considered to be the most basic living unit?
| A. | organ system | |
| B. | molecule | |
| C. | organelle | |
| D. | cell | |
| E. | tissue |
5 points
QUESTION 9
Which of the following concepts best describes the wide variety of dog species we observe, ranging from the domesticated golden retriever or the basset hound, to the wild dogs of Africa, to foxes?
| A. | preadaptation | |
| B. | special creation | |
| C. | inheritance of acquired characteristics. | |
| D. | taxonomy | |
| E. | evolution |
5 points
QUESTION 10
If an ecologist is studying the cycling of carbon through a particular environment (which involes the movement of carbon through living things as well as through rock, air, and water), the scientist is studying at what level of ecology?
| A. | organismal | |
| B. | community | |
| C. | ecosystem | |
| D. | population | |
| E. | biosphere |
5 points
QUESTION 11
Which list is organized from smallest to largest level of organization of life?
| A. | organisms, organ systems, organs, tissues, cells, organelles | |
| B. | organelles, cells, tissues, organs, organ systems, organisms | |
| C. | organelles, tissues, cells, organ systems, organs, organisms | |
| D. | tissues, cells, organelles, organs, organ systems, organisms | |
| E. | cells, tissues, organ systems, organelles, organs, organisms |
5 points
QUESTION 12
When examining the hierarchy of life, which of the following terms is most inclusive?
| A. | biosphere | |
| B. | population | |
| C. | species | |
| D. | ecosystem |
5 points
QUESTION 13
The units of inheritance are
| A. | evolutions. | |
| B. | heredities. | |
| C. | genes | |
| D. | twins. | |
| E. | metabolic activities. |
5 points
QUESTION 14
Organisms that undergo asexual reproduction
| A. | require another organism to reproduce. | |
| B. | are usually very complex. | |
| C. | produce offspring that are different from each other. | |
| D. | do not require energy to reproduce. | |
| E. | produce offspring that are identical to each other and to the parent. |
5 points
QUESTION 15
All the living organisms in a particular area at a particular time make up a
| A. | biosphere. | |
| B. | community. | |
| C. | biosystem. | |
| D. | population. | |
| E. | ecosystem. |
5 points
QUESTION 16
The first step in the scientific method is to
| A. | identify a problem. | |
| B. | predict the results of an experiment. | |
| C. | propose a solution. | |
| D. | draw a conclusion. | |
| E. | perform an experiment. |
5 points
QUESTION 17
Young multicelled organisms usually start out small, then grow in size, and increase in complexity. This process is called:
| A. | heredity. | |
| B. | metabolism. | |
| C. | development. | |
| D. | evolution. | |
| E. | heredity. |
5 points
QUESTION 18
To maintain order within their cells and organs, all living things must
| A. | carry on metabolism. | |
| B. | reproduce. | |
| C. | constantly change. | |
| D. | be able to move. | |
| E. | extract energy from sunlight. |
5 points
QUESTION 19
Which of the following includes Highest levels of hierarchy?
| A. | family | |
| B. | phylum | |
| C. | domain | |
| D. | kingdom | |
| E. | order |
5 points
QUESTION 20
Fungi are classified into which domain?
| A. | Archaea | |
| B. | Eukarya | |
| C. | Bacteria | |
| D. | Fungi |
Life Chemistry LabReport
- Elements of Living Organisms
- Name the five most abundant elements found in the humanbody.
- Cells organize into tissues which work together to form
- What is the difference between an atom and an element?
- Molecules
- Is glucose an atom or molecule? What are the atoms inglucose?
- How many bonds can oxygen form?
- Is C6H12O6 a molecular orstructural formula? What is the name of this molecule?
- Based on lab, Section II, draw and label a ball and stickrepresentation of a carbon dioxide, water and ethyl alcoholmolecule. Use circles to designate atoms and lines for bonds, thenindicate the chemical symbol for each atom. Sign, date and preparean image of your drawing and include it with this lab report.
- Molecular Make Up of Living Organisms
- Name the four groups of organic molecules.
- _______ are the most abundant organic molecules in livingorganisms.
- Name a polysaccharide, monosaccharide, protein and alipid.
- Go to the lab, Section 3, Exercises 2, 3, 4 and 5 to completethe following table:
Type of Organic Molecule | Reagent | Sample Tested | Positive Color | Negative Color |
Carbohydrate (starch) | Iodine | |||
Sugar | Benedictâs solution | |||
Lipid (fat) | Sudan IV | |||
Protein | Biuret |
- Go to the lab, Section 3, Exercise 6 to locate starch in potatocells. Describe the microscopic appearance of starch in terms ofcolor and location within the cells.
- Measurement of pH
- What substance has an equal number of hydrogen ions(H+) and hydroxide ions (OH-)?
- What is the pH of the above substance?
- How does the addition of hydroxide ions (OH-) affectthe pH of your stomach?
- Go to lab, Section 4, Exercise 7 to test the pH of commonsolutions. Which solution tested had a pH closest to neutral? Whichsolution was most acidic?
Summary Questions
- What is the smallest subunit of carbohydrates?
- Which reagent could be used to test for diabetes?
- A member of your family has a high blood cholesterol count. Yousee âfat freeâ crackers in the grocery store and decide to test theproduct for the presence of lipids. How would this testproceed?
- A family member has been cautioned about eating foods high insugar. Explain how a test could be run for the presence ofsugar.
- Explain how to test for the presence of protein in milk.
- A friend complains of stomach acidity. Which substance testedmight safely help relieve your friendâs symptoms?
- Explain how solutions are classified as acids or bases. Then,give an example of a weak acid.
