Homeostasis Review #1

Which organelle is correctly paired with its function?

• lysosome - synthesize carbohydrates

• mitochondria - synthesize proteins

• chloroplast - site for photosynthesis

• nucleus - site for cellular respiration

Which of the following is not necessary for photosynthesis to occur?

• light energy

• Oxygen

• Carbon Dioxide

• Water

The chart lists substances involved in the process of cell respiration. Which describes how they interact in cell respiration?

• A and B combine to produce C and D.

• B and C combine to produce A and D.

• C and D combine to produce A and B.

• A and C combine to produce B and D.

Organisms undergo constant chemical changes as they maintain an internal balance known as

• interdependence
• homeostasis
• synthesis
• recombination

Research has shown that treadmill training increases the number of certain energy-releasing structures in the brain cells of rats.The cellular structures referred to in this study are most likely

• mitochondria

• nuclei

• vacuoles

• ribosomes

Certain seaweeds contain a greater concentration of iodine inside their cells than there is in the seawater surrounding them. The energy required to maintain this concentration difference is most closely associated with the action of

• ribosomes

• mitochondria

• vacuoles

• nuclei

Anhidrosis is the inability to sweat normally. If the human body cannot sweat properly, it cannot cool itself, which is potentially harmful.

Anhidrosis most directly interferes with:

• a feedback mechanism that maintains homeostasis

• an immune system response to harmless antigens

• the synthesis of hormones in the circulatory system

• the enzymatic breakdown of water in cells

Identify what is labeled with the letter D

• active site

• enzyme

• substrate

• products

Enzymes have an area where reactants called substrates can be brought together in an enzyme-catalyzed reaction. This area on the enzyme is called the

• enzyme substrate complex.
• reaction site.
• active site.
• lock and key.

What makes an enzyme specific?

• Size
• Shape
• Name
• Location it is found in