Unit 1A County Review

Dropdown

Molecules can enter the cell by passing through the ​

Select answer

and may take part in chemical reactions within the ​

Select answer

to help maintain homeostasis in the cell.

Multiple Choice

What homeostatic process do you predict would be most affected if the Golgi was not working and why?

• 
  Cell transport because it produces lipids which are used to form the cell membrane.

• Energy storage because it produces proteins which are used to form the mitochondria.

• 
  Cell transport because it produces carbohydrates which are used to form the cell membrane.

• Energy release because it produces nucleic acids which are used to form the mitochondria.

Multiple Select

Scientist have discovered a new disease associated with the misfolding of proteins. Which two organelles should scientists first investigate to learn more about this buildup of misfolded proteins?

• Mitochondria

• Endoplasmic Reticulum

• Ribosome

• Lysosomes

Multiple Select

Which two organelles work together to help maintain the structure of the plant cell?

• Cell Wall

• Chloroplast

• Cell Membrane

• Vacoule

Match

Match the function to the organelle.

• Cell Membrane

• Cell Wall

• Mitochondria

• Chloroplast

Selectively Permeable Gatekeeper

Support

Site of Cellular Respiration

Site of Photosynthesis

• Selectively Permeable Gatekeeper

• Support

• Site of Cellular Respiration

• Site of Photosynthesis

Multiple Choice

Which snack would be the best for an immediate source of energy?

• Beef Jerky

• Oranges

• Steak

• Cheese

Categorize

Options (9)

Genetic information

Nucleotide

Amino Acid

Muscle growth and repair

Fats, oils, waxes

Hydrophobic

Selectively permeable membrane

Simple sugar

Quick energy

Organize these options into the right categories

Carbohydrates

Lipids

Proteins

Nucleic Acids

Multiple Choice

Pepsin is an enzyme that is secreted into the stomach during digestion.

Which of the following is MOST LIKELY the main function of this enzyme?

• To break down carbohydrates.
• To digest proteins.
• To aid in movement of nutrients through the digestive tract.

• To denature proteins.

Dropdown

The enzyme works best at a temperature of approximately ​

Select answer

C and best in a pH range of ​

Select answer

​.

Dropdown

Cellular transport helps to maintain homeostasis within a cell. Passive transport is where molecules move from an area of​

Select answer

concentration to ​

Select answer

concentration ​

Select answer

energy.

Multiple Choice

Emily observes water from the beaker entering the tube. Which best describes the type of cellular transport that she is investigating?

• Diffusion
• Active transport
• Osmosis
• Facilitated diffusion

Multiple Choice

A student wanted to observe how the cell membrane is selectively permeable. They filled a baggie with a white solution and placed it in a beaker with an iodine solution that is deep purple. They came back the next day and observed the white solution was now purple. What happened?

• The iodine molecules moved into the baggie through osmosis.

• The iodine diffused into the baggie, changing the white solution to purple.

Multiple Choice

Sally is planning an investigation to determine how the concentration of a solute in a solution affects osmosis. Sally uses rat blood cells, which have an NaCl concentration of 0.7% when they are in homeostasis. Which of the following is the best hypothesis for the student’s investigation?

• The cells will stay the same size in the 0.7% NaCl solution, swell in distilled water, and shrink in the 12% NaCl solution.

• The cells will shrink in distilled water, stay the same size in the 0.7% NaCl solution, and swell in the 12% NaCl solution.

• The cells will swell in the distilled water and in the 12% NaCl solution, but they will stay the same size in the 0.7% NaCl solution.

• The cells will stay the same size in distilled water and in the 0.7% NaCl solution, but they will swell in the 12% NaCl solution.

Multiple Choice

If a potato core contains 10% sugar, which concentration of sugar in a sugar-water solution would cause the potato to gain mass?

• 10%

• 15%

• 5%

• 20%