Life Sciences Misc. (MS Science Bowl) 5th - 8th Grade Quiz

Life Sciences Misc. (MS Science Bowl)

Assessment

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Anmol Dash

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Biology

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5th - 8th Grade

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1 plays

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Hard

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54 questions

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MULTIPLE CHOICE

30 sec • 1 pt

Which of the following materials is the STRONGEST in terms of tensile strength per mass:

MULTIPLE CHOICE

30 sec • 1 pt

Which of the following is a property of carbon that makes it most effective as a polymer building block:

MULTIPLE CHOICE

30 sec • 1 pt

Beeswax is BEST described as a:

MULTIPLE CHOICE

30 sec • 1 pt

Honey is considered hygroscopic because it:

MULTIPLE CHOICE

30 sec • 1 pt

Which of the following is NOT one of the substituents attached to the asymmetric carbon of an amino acid?

MULTIPLE CHOICE

30 sec • 1 pt

Infrared spectroscopy is used to help identify various chemical compounds. Each functional group is identified by a peak at a particular wavelength. If a scientist synthesizes a fatty acid in the lab, which of the following peaks would indicate that impurities were present?

MULTIPLE CHOICE

30 sec • 1 pt

Which of the following statements is true of microbial biofilms?

MULTIPLE CHOICE

30 sec • 1 pt

An environmental toxin introduced into a eukaryotic [yoo-KAR-ee-oh-tik] cell prevents the cell from producing ribosomes [RY-buh-sohms], yet DNA replication still occurs. From this information, which of the following enzymes is likely affected?

MULTIPLE CHOICE

30 sec • 1 pt

The polymerase chain reaction (PCR) process is a method that makes it possible to replicate DNA segments in a very short amount of time using alternating periods of heating and cooling. The periods of heating would denature most proteins, such as DNA polymerases [pol-uh-muh-RAYS-uhs], and make them nonfunctional, especially at the high temperatures used during PCR. How is this obstacle overcome in modern PCR reactions?

10.

MULTIPLE CHOICE

30 sec • 1 pt

A segment of unlabeled DNA undergoes replication in a solution containing all necessary materials and in which the nitrogenous bases in the solution are radioactively labeled. Two complete, double-stranded DNA segments form. Following replication, which of the following is likely to be observed?