Exam 3: The Molecules of Life

Scenario Cooking oils, such as olive oil, are largely made up of unsaturated fats. If you have ever heated cooking oil in a pan, you might have noticed that eventually the oil begins to smoke. The temperature when this occurs is called the "smoke point." At the smoke point, the fatty acids and glycerol molecules that make up the unsaturated fats in the oil begin to break down and form smoke. Different oils have different smoke points, and these smoke points depend on the molecular composition of the oils. Below is a table with data for four different types of cooking oils, including their smoke points (values are for 1 tablespoon each [15 ml]). -Which statement about the data in the table is TRUE?

Complete the equation: monosaccharide + monosaccharide → ________ + water

Which substance is lowest in unsaturated fats?

Extremophilic bacteria are able to survive in hostile environments, including scalding hot water found in springs and vents that reach temperatures over 100°C. Researchers studying these bacteria measured the function of a protein from an extremophile bacterium at 100°C, and they also measured the function of a similar protein from a human cell at 100°C. Which results do you think the researchers obtained?

Table sugar is ________.

The figure below shows ________.

What name is given to the following reaction? glycerol + 3 fatty acids → triglyceride + 3 water molecules

Carbohydrates typically include ________.

A fat that is completed hydrogenated would be ________.

Scenario Cooking oils, such as olive oil, are largely made up of unsaturated fats. If you have ever heated cooking oil in a pan, you might have noticed that eventually the oil begins to smoke. The temperature when this occurs is called the "smoke point." At the smoke point, the fatty acids and glycerol molecules that make up the unsaturated fats in the oil begin to break down and form smoke. Different oils have different smoke points, and these smoke points depend on the molecular composition of the oils. Below is a table with data for four different types of cooking oils, including their smoke points (values are for 1 tablespoon each [15 ml]). -Corn oil has 1.8 g saturated fat and 7.0 g unsaturated fat per tablespoon. Based on the data in the table, what can you reliably conclude about the smoke point of corn oil?

People with lactose intolerance do not have enough ________.

________ is a hydroxyl group.

Please read the following scenario to answer the following questions. While shopping at the grocery store, you take a look at three types of cookies. Summaries of the nutrition facts labels for the cookies are shown in the table below. -Compare the chocolate mint cookies and the peanut butter cookies. Which cookies are less healthy? Why?

By definition, what type of fatty acid has double bonds?

A DNA molecule has the sequence TCAACTTGA. The equivalent RNA molecule would have the sequence ________.

What name is given to the following reaction? sucrose + water → glucose + fructose

The ability to tolerate lactose throughout life most likely arose in ________.

A fat contains which molecular components?

If one strand of a DNA double helix has the sequence GACGTCA, what will be the sequence of the other strand?

Nucleic acids are polymers of ________ monomers.