Untitled Quiz

List as many abiotic factors which can affect the variety of life in an ecosystem?

What is the ability of an organism to maintain its metabolic rate affected by?

Which of the following are examples of conformers?

Which of the following are examples of regulators?

What are the advantages of being a conformer?

What are some behavioral strategies a conformer can use to maintain their optimum metabolic rate?

What are the advantages of being a regulator?

The graph shows that Species X is a conformer.

What would happen to a spider crab if placed in pure water?

Which of the following is a conformer?

Which graph best illustrates the effect of increasing temperature on oxygen consumption in a conformer and a regulator?

What is the overall aim of thermoregulation?

How is information about body temperature communicated to the hypothalamus?

What happens to your skin when you get too hot?

Which line in the table correctly identifies the change in state of the erector muscle and the change in blood flow in the capillary which would be expected if the skin was exposed to low temperatures?

Explain the importance of thermoregulation to mammals.

Give one reason why it is important for mammals to regulate their body temperature.

Name the temperature monitoring center in the body of a mammal.

How are messages sent from the temperature monitoring center to the skin?

Describe the response of blood vessels in the skin of a mammal to a decrease in environmental temperature.

Explain the effect of vasoconstriction in the skin of a mammal.

Which line in the table below correctly identifies the temperature monitoring center, the type of signal and the effector involved in the control of body temperature?

Which line in the table correctly identifies the description of salmon and the control of ion pumps?

Explain how hibernation helps the marmot survive the adverse conditions of winter.

Give the term used to describe a state of reduced activity each day to survive adverse conditions in some species of small mammals with high metabolic rates.

Name the type of behavior that many species of bird avoid metabolic adversity by relocating to a more suitable environment.

Describe one specialized technique used to study long-distance bird movements.

Which of the following statements describes a behavior used to avoid adverse conditions?

Name the three domains of life.

Give reasons why microorganisms are useful to humans?

What are three reasons why microorganisms are ideal for mass production of products?

Give one example of an industrial process that utilizes microorganisms.

Which line in the table correctly matches the parts of the fermenter labeled X, Y, and Z with their respective function?

Buffers are added to culture media to...

The mean generation time of a cell is the time it takes for the cell to divide in half.

Which of the following is not a phase of microbial growth?

Match the following phases of microbial growth with their descriptions.

Why are semi-logarithmic scales used in producing and/or interpreting growth curves of microorganisms?

Explain how scientists can increase the rate of mutagenesis.

What is the advantage of using recombinant yeast cells instead of bacteria for producing proteins?

Which pair of enzymes are required to produce a modified plasmid?

Explain why bacteria that took up the modified plasmids will not have resistance to antibiotic Y.

Explain the importance of removing the EPO gene from a human chromosome using the same restriction endonuclease that was used to open the bacterial plasmid.

Name the enzyme used to seal the EPO gene into the bacterial plasmid.

Explain how a culture containing only transformed bacteria can be obtained.

Identify the section of the modified plasmid that ensures it can be copied and passed to daughter cells.

Suggest a reason why bacteria might produce an inactive form of EPO protein.

Suggest how recombinant DNA technology could be used to produce an active form of the EPO protein.

Name one enzyme used in the process of recombinant DNA technology and state its function.

Describe a procedure that would allow only cells containing the recombinant plasmid to be selected.

Describe the process of horizontal gene transfer.

Explain why it is important to maintain sterile conditions when culturing bacteria that can produce insulin.

What are regions of non-coding DNA known as?

Give two uses of non-coding DNA.

What do exons do?

Explain how one gene can code for many proteins.

State three methods of post-translational modification of polypeptides.

Which of the following procedures could be used to improve bacterial species in industrial settings?

Why might recombinant yeast cells be used to produce active forms of the protein which are inactive in bacteria?

What is the primary function of a vector in recombinant DNA technology?

What are three essential components required for an effective plasmid vector?

What are three instances where restriction endonucleases are used?

What is the function of ligase in the context of recombinant DNA technology?

Suggest one reason why citrate was not produced until day 2 in the experiment?

From the diagram, identify the enzyme that should be inhibited to increase citrate yield. Justify your choice.

Name one substance that could be added to the fermenter to give an increased yield of citrate, apart from enzyme inhibitors.

Name a process that can improve a wild strain of a micro-organism to increase the yield of a desired product.

Which line in the table correctly identifies the number of DNA fragments that would be obtained if a DNA strand was cut with the given endonucleases?

Which restriction endonuclease was used to remove a gene from a donor chromosome?

Name the enzyme which would be used to seal the gene into the plasmid.

Predict the number of colonies that would be expected to grow if the nutrient agar plate had contained the antibiotic ampicillin, given that the modified plasmid was introduced into bacterial cells.

Name region X in the diagram, which ensures the modified plasmid will be passed on to daughter cells.

In recombinant DNA technology, endonucleases are used to create blunt ends on DNA fragments.

Which of the following is the correct order of the five steps involved in recombinant DNA technology?

Explain how genes are often added as a safety mechanism to prevent the engineered organism from surviving in the external environment.

Which of the following procedures could be used to improve wild strains of certain microorganisms for industrial use?