Cell Energetics

During the process of cellular respiration, energy is released from _____________ ?

• Carbon dioxide
• Oxygen atoms
• Water molecules
• Chemical bonds

Which substance is the most direct source of energy that an animal cell uses for the synthesis of materials?

• ATP
• Glucose
• DNA
• starch

Which metabolic process is responsible for the muscle fatigue and cramping an athlete may experience after running a race?

• alcoholic fermentation
• dehydration synthesis
• lactic acid fermentation
• aerobic respiration

Plant cells can synthesize energy-rich organic molecules, and later break them down to extract that energy for performing life processes. These activities require direct interaction between the  _____________ and _____________?

• chloroplasts and vacuoles
• chloroplasts and mitochondria
• ribosomes and mitochondria
• vacuoles and ribosomes

In whats way are photosynthesis and cellular respiration similar?

• They both occur in chloroplasts

• They both require sunlight to start the reaction

• The both involve organic and inorganic molecules

• They both require oxygen to start the cellular process

Autotrophs might survive when heterotrophs cannot because autotrophs are able to 

• reproduce asexually
• become dormant
• exist without respiration
• make their own food

In photosynthesis, chlorophyll functions in

• converting glucose molecules to starch
• absorbing water from the soil
• absorbing light energy
• gas exchange between leaves and the atmosphere

During the process of photosynthesis, energy from the sun is converted into

• chemical energy in the bonds of inorganic molecules
• chemical energy in the bonds of organic molecules
• enzymes used to produce inorganic molecules
• enzymes used to produce organic molecules 

In this setup, which color of light will cause the plant to produce the smallest number of gas bubbles?

• red
• orange
• blue
• green

Which phrase, if placed in box X, would correctly complete the flowchart shown?  

• increased use of starch in root cells
• increased concentration of glucose in leaf cells
• decreased ATP in root cells
• decreased concentration of oxygen in leaf cells