Sample questions for Exam 1

1. it includes the plants and fungi
2. its members have membrane-bound organelles
3. it includes the animals
4. it includes the bacteria
5. all of the above are correct

1. species
2. ecosystem
3. population
4. community
5. none of the above

back to top

Chapter 3

Amino acids linked together by a process called ________________ synthesis form _______________.

1. hydrolysis. . . proteins
2. dehydration. . .carbohydrates
3. hydrolysis. . .carbohydrates
4. dehydration. . .proteins

Which of the following is a polysaccharide?

1. DNA
2. glucose
3. glycerol
4. starch

Nucleotides, the subunits of nucleic acids, are made up of which of the following?

1. glucose, phosphate group, nitrogen-containing base
2. glycerol and fatty acids
3. amino acid, phosphate group, glucose
4. 5-carbon sugar, phosphate group, nitrogen-containing base

What is the structural difference between saturated and unsaturated fats? (3 pts)

back to top

Chapter 4

Proteins are transported within cells in

1. vesicles
2. lysosomes
3. ribosomes
4. mitochondria

Which of the following structures are involved in the movement of cells?

1. cilia
2. flagella
3. all of the above
4. none of the above

A(n) ________________ stores digestive enzymes for breaking down food particles and/or toxins.

1. chloroplast
2. lysosome
3. Golgi apparatus
4. endoplasmic reticulum

back to top

Chapter 5

An animal cell immersed in a hypotonic solution will

In which of the following processes does solute transport occur from a region of low solute concentration to a region of high solute concentration?

back to top

Introduction to Scientific Method Lab

Evaluate the following hypotheses. Label each as GOOD if it is testable and falsifiable, BAD if it is not.

1. The concentration of solutes in a cell relative to its surrounding environment affects the direction and rate of osmosis._______
2. There is life after death.________
3. Singing to a plant makes it grow better.________
4. Rain makes people sad.________
5. There is life on other planets. ________
6. Taking vitamin C can prevent you from catching a cold. _______

In my Ecology class this semester, we used nets to sample aquatic invertebrates found in a local creek, Swamp Creek. We collected 9 samples from fast-moving parts of the creek, and 9 samples from slow-moving parts of the creek. We standardized the sampling procedures across all samples. We took the samples back to the lab, and counted and identified all of the organisms we collected. We found all sorts of interesting organisms, including larval and adult insects, aquatic segmented worms, nematodes, water striders, and crayfish. One of the basic questions we were interested in was whether the speed of the current affects the abundance of invertebrates.

List the null hypothesis.

What is the dependent variable?

List and explain at least three ways in which the sampling procedure should have been standardized (i.e., what do you think were our standardized variables?).