Question

1. name two ways that animals take in oxygen for cellular respiration. 40. name two ways that a plant may use the glucose they create during photosynthesis.

Explanation:

Question 39

To answer how animals take in oxygen for cellular respiration, we recall respiratory adaptations. Many aquatic animals (like fish) use gills: water flows over gill filaments, and oxygen diffuses from water into blood. Terrestrial animals (like humans, insects) use lungs (mammals, reptiles, birds) or tracheal systems (insects: air enters spiracles, moves through tracheae to cells). Another way is through skin (cutaneous respiration), seen in amphibians (e.g., frogs) where oxygen diffuses through moist skin into capillaries.

Plants produce glucose via photosynthesis. Glucose has multiple uses. First, for cellular respiration: plants break down glucose in mitochondria to release energy (ATP) for metabolic processes (growth, repair, transport). Second, for building structures: glucose is converted to starch for storage (e.g., in roots, seeds) or to cellulose for cell walls (providing structural support to stems, leaves, etc.).

Answer:

Two ways animals take in oxygen: 1. Through gills (e.g., fish, where oxygen from water diffuses into blood across gill membranes). 2. Through lungs (e.g., mammals, birds, where oxygen is inhaled into alveoli and diffuses into blood) (or via cutaneous respiration, e.g., frogs, oxygen diffuses through moist skin).

Question 40