AS Biology Quarterly Exam Review

The diagram shows a stage micrometer scale viewed with an eyepiece graticule, using a magnification of x200.

Using the same magnification, a chloroplast is measured as 4 eyepiece graticule divisions long. How long is the chloroplast?

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Tags

NGSS.HS-PS1-3

Which range of cell diameters is typical for prokaryotic cells?

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The diagram shows a typical animal cell.

Where would nucleic acids be found?

• 1, 2 and 3

• 1 and 2 only

• 1 and 3 only

• 2 and 3 only

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the maximum number of hydrogen bonds that can form between a single water molecule and other water molecules?

• 1

• 2

• 3

• 4

The diagrams show the structure of four amino acids in aqueous solution.

Which two structures have an overall charge?

• alanine and aspartate

• alanine and glycine

• aspartate and lysine

• glycine and lysine

The table shows the number of carbon atoms and the number of carbon–carbon double bonds in molecules of three triglycerides and the fatty acids they contain. The information is shown in the format ‘number of carbon atoms : number of carbon–carbon double bonds’.

Which description matches fatty acid 2 of the 56 :4 triglyceride, identified in the table as X?

• saturated with 17 carbon atoms

• saturated with 18 carbon atoms

• unsaturated with 17 carbon atoms

• unsaturated with 18 carbon atoms

Tags

NGSS.HS-LS1-6

Collagen molecules are made up of three polypeptide chains interacting together. The individual polypeptide chains consist of a regular pattern of amino acids. Almost every third amino acid is glycine. Which protein structures of collagen are described?

• primary and secondary

• primary and quaternary

• secondary and tertiary

• tertiary and quaternary

The masses of the parts of haemoglobin are shown in the table.

There are 1000 Da in 1 kDa. What is the mass of a haemoglobin molecule in kDa?

• 31.6

• 33.5

• 62.6

• 64.5

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds

The bond that joins amino acids are called:

• Peptide Bonds
• Ester Bonds
• Glycosidic Linkages
• Phosphodiester Bonds