★ Nutrition Quiz
thin stalk that connects the blade of the leaf to the plant’s stem
A. blade
B. cuticle
C. petiole
D. epidermis
Select your answer:

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Enzymes and ATP Structure › ViewTemperature at which an enzyme works the best
A. Extreme temperature
B. Suboptimal temperature
C. Random temperature
D. Optimal temperature
Body Systems › View
Which part of your body carries food from your mouth to your stomach?
A. Esophagus
B. Trachea