Biology » Page 100

Biology

Cordell Luna

Which is the most likely way that Hox genes account for these variations?

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Biology

Phillip Nixon

One function of gel electrophoresis is to

a. separate DNA fragments.

c. recombine DNA.

b. cut DNA.

d. extract DNA.

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Biology

Darion

What is the function of heart valves?

They return blood to the heart.

They force blood to flow out of the heart.

They regulate the heart rhythm.

They prevent blood from flowing backwards.

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Biology

Raul Gibbs

Scientists use different types of models to analyze the structure of ecosystems. Which characteristic is seen in a biomass pyramid

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Biology

Schaefer

What field is used to classify organisms

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Biology

Lamont Ruiz

Which best describes how the fossil record supports the theory of evolution?

a. The fossil record shows exactly how all species have evolved.

b. The fossil record refutes Darwin's theories.

c. The fossil record cannot accurately be aged.

d. The fossil record reveals intermediates that link different species.

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Biology

Colton Steele

Which type of diagram illustrates the flow of energy through a group of particular species?

A. food web

B. food chain

C. energy plate

D. energy pyramid

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Biology

Cameron Marsh

A researcher found a method she could use to manipulate and quantify phosphorylation and methylation in embryonic cells in culture. In one set of experiments, she succeeded in increasing acetylation of histone tails in the chromatin of the cells. Which of the following results would she most likely see in these cells?

a. activation of histone tails for enzymatic function

b. decreased binding of transcription factors

c. increased chromatin condensation

d. inactivation of the selected genes

e. decreased chromatin condensation

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Biology

Darren Graham

Which of the four levels of protein structure is maintained after denaturing?

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Biology

Sidney Clayton

What biome covers 45% of earths surface?

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Biology

Maggie Walter

What dose a kangaroo lack that mammals such as dogs and cats have

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Biology

Maleah Mathews

How is the gray whale different from other species?

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Biology

Camryn Spencer

What are the two groups called that make up the naming system?

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Biology

Ashanti Marks

Acuve

Which region of Earth's crust experiences the least amount of pressure?

O crust

O mantle

O outer com

O inner core

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Biology

Seth Conway

Energy released by the electron transport chain is used to pump Ht into which location in eukaryotic cells?

mitochondrial inner membrane

mitochondrial intermembrane space

mitochondrial outer membrane

mitochondrial matrix

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