In your own words.

3. Two new species of plants were introduced into an area that was low in available nitrogen compounds in the soil. One formed nodules and one did not. Which species would you reasonably expect to grow more robustly? Explain.

Answer:

4. How does the location of the nodules relate to the function of the nodule? Explain.

Answer:

5. This diagram shows two groups of plant cells, one with Rhizobium and one without the bacteria. Label which is which, and explain the obvious size difference, using observations from Part C of the lab in your answer.

Answer:

 

Mid-Unit Assessment, Part 2: The Chemistry of Life Complete this teacher-scored portion of the assessment and submit it to your teacher.

Total score:

_ of [9] points

(Score for Question 1: _ of [3] points)

1. Discuss the types of trace elements in organic compounds.

Answer:

Type your answer here.

(Score for Question 2: _ of (3] points)

2. Discuss how compounds in different types of organisms can be used to benefit people.

Answer:

Type your answer here.

(Score for Question 3: _ of [3] points)

3. Describe what is meant when water is called a polar molecule.

Answer:

Type your answer here.

Graded Assignment

Unit Assessment, Part 2: Gene Expression

Complete this teacher-scored portion of the assessment and submit it to your teacher.

Total score: ____ of 15 points

(Score for Question 1: ___ of 5 points)

1. A grown tiger began its life as a single fertilized egg. Explain why a tiger looks so much different as an adult than it did as a single fertilized egg.

Answer:

Type your answer here.

(Score for Question 2: ___ of 5 points)

2. Describe how the lac operon functions, and explain how it permits E. coli to produce the enzymes needed to break down lactose when it is present in the bacterium.

Answer:

Type your answer here.

(Score for Question 3: ___ of 5 points)

3. Explain how scientists use recombinant DNA technology to produce the drug insulin. Be sure to also explain why a gene from one organism can be expressed by another organism.

Answer:

Type your answer here.

Gene map

Now you are ready to figure out the order of the genes for beak color, tail-feather length, and feather color on the chromosome and build a genetic map.

(Score for Question 1: Click or tap here to enter text. of 2 points)

1. List the distances between each pair of genes:

beak color and tail-feather length:

beak color and feather color:

tail-feather length and feather color:

Answer:

Type your answer here.

(Score for Question 2: Click or tap here to enter text. of 2 points)

2. Which two alleles are the farthest apart?

Answer:

Type your answer here

(Score for Question 3: Click or tap here to enter text. of 2 points)

3. Which two alleles are the closest together?

Answer:

Type your answer here.

(Score for Question 4: Click or tap here to enter text. of 2 points)

4. True or False: The diagram shows the correct genetic map for these three alleles on one chromosome.

Answer:

Type your answer here.