LE Part D Review Part 1

LE Part D Review Part 1

By Ed Miller

​Base your answer to question 1 on the information and Universal Genetic Code Chart below and on your knowledge of biology.

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Part D Questions​

​Question #1

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Multiple Choice

The messenger RNA sequence that codes for the amino acid chain

TYR–ARG–GLY–VAL–ALA–LEU is

• UAU–CGA–GUU–UUU–UUA–CUC

• UAU–CGA–GGA–GUU–GCG–CUC

• CUC–GCG–GUU–GGA–CGA–UAU

• CUC–UUA–UUU–GUU–CGA–UAU

​Base your answer to question 2 on the information and Universal Genetic Code Chart below and on your knowledge of biology.

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Part D Questions​

​Question #2

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Multiple Choice

The messenger RNA sequence that is most likely to produce a functional protein is

• UGA–UAU–CGA–GGA–GUU–GCG–CUC–UAG

• UAG–UAU–CGA–GGA–GUU–GCG–CUC–AUG

• AUG–UAU–CGA–GGA–GUU–GCG–CUC–UGA

• UAA–CUC–UUA–UUU–GUU–CGA–UAU–UAA

Question #3

A forensic scientist is trying to determine if the plant pieces found on a burglary suspect match the plants found outside a home that was robbed. The suspect had plant pieces in the hood of his jacket as well as green stains on the knees of his jeans.

Living Environment Regents

Part D Questions

Multiple Choice

A forensic scientist is trying to determine if the plant pieces found on a burglary suspect match the plants found outside a home that was robbed. The suspect had plant pieces in the hood of his jacket as well as green stains on the knees of his jeans.

In order to compare the composition of the pigments on the suspect’s jeans to the pigments of the plants at

the home, the forensic scientist should use

• restriction enzymes

• genetic engineering

• paper chromatography

• receptor molecules

Question #4

A forensic scientist is trying to determine if the plant pieces found on a burglary suspect match the plants found outside a home that was robbed. The suspect had plant pieces in the hood of his jacket as well as green stains on the knees of his jeans.

Living Environment Regents

Part D Questions

Multiple Choice

A forensic scientist is trying to determine if the plant pieces found on a burglary suspect match the plants found outside a home that was robbed. The suspect had plant pieces in the hood of his jacket as well as green stains on the knees of his jeans.

The evidence that would be most convincing in determining that the plant pieces found in the suspect’s hood

matched the plants outside the home that was robbed would be if they both had the same

• color flower petal

• gene sequence

• kind of pollen grains

• type of leaf structure

​The diagram below represents a lab setup. The artifi cial cell (dialysis tube) contains a starch solution and the beaker contains a solution of starch indicator and water. The setup is left undisturbed for twenty minutes.

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Part D Questions​

​Questions #5 & #6

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Fill in the Blanks

Open Ended

Describe one observation that could be made that would confirm that the molecule you identified in question 5 had passed through the membrane.

​Base your answer to question 7 on the diagram below and on your knowledge of biology.

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Part D Questions​

​Questions #7 & #8

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Open Ended

A new finch is found to have a diet of worms and caterpillars. Identify one finch from the diagram that would have a beak most similar to the new finch. Support your answer.

Open Ended

A student was given forceps (tweezers) as his tool in the Beaks of Finches lab. Circle which type of food she would likely pick up most easily – small seeds or large seeds. Choose between 'Small Seeds' or 'Large Seeds'. Support your answer.

​A student added equal volumes of water to two different beakers. He then added blue food dye to one and yellow to the other. Next, he placed a white paper towel across the two beakers so that it went down into the liquid and connected the two beakers.

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Part D Questions​

​Question #9

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Multiple Choice

After 20 minutes, the section of paper towel connecting the two beakers had turned color. The towel most likely turned green as a result of the

• separation of the dye molecules through the process of chromatography

• dyes moving across the towel due to the process of electrophoresis

• diffusion of the blue- and yellow-dyed water across the towel

• active transport of the blue and yellow food dyes

A hyrax is an animal that has been called a rock rabbit and looks like a guinea pig. Fossil records show that hyraxes first appeared on Earth approximately 37 million years ago. As they evolved, some became mouse-sized, while some were the size of a horse. Some eventually adapted to marine life and are related to manatees, and some became grazers and are related to elephants.

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Part D Questions​

​Questions #10 & #11

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Multiple Choice

A section of the mammalian evolutionary tree is shown. Which number would indicate the most recent common ancestor of the hyrax, elephant, and manatee on the section of this mammalian evolutionary tree?

• 1

• 2

• 3

• 4

Open Ended

Identify one type of molecular evidence that could have been used to develop this mammalian evolutionary tree, and describe one specific way that the evidence could have been used to construct the tree.

​During a lab experiment a student took his resting pulse rate, counting 23 beats in 20 seconds. The student then exercised for several minutes. The student’s pulse was taken immediately after the exercise, and then every minute for 6 minutes. The graph below shows changes in the pulse rate after the exercise was completed.

Part D Questions​

​Questions #12 & #13

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Fill in the Blanks

Open Ended

State one biological explanation for how the pulse rate increase benefi ted the student as he exercised.