Read the overview and complete the interactivities that follow. the lac operon consists of a series of genes involved in the breakdown of lactose. the expression of the operon is controlled by two regulatory proteins, a repressor and an activator. together these two regulatory proteins allow the cell to regulate gene expression in response to the levels of glucose and lactose available to the cell. the following questions relate to the lac operon. 1. the lacl gen makes a repressor portein. true/false, 2.the structural porteins encoded by the lac operon are i lactose synthesis. true/false, 3. the cap portein is an activator that binds to the operatot. true/false, 4. the product og lacl is an allosteric protein that can undergo conformotional change when allolactose binds to it. true/false, 5. cap binding causes the dna to bend facilitating rna polymerase binding. true/false

1 True 2 false 3 false 4 true  5  true

Explanation:

1 The Lac I gene makes repressor protein  True

2 The structural genes encoded by lac operon are involved in lactose synthesis  false

3 The CAP protein is an activator protein that binds to the operator false

4 The product of Lac I is an allosteric protein that can undergo conformational change when allolactose binds to it  True

5 CAP binding causes DNA to bend facilitating RNA polymerase binding True

1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)