23. Photosynthesis is a process that a) takes place in animal tissue only b) syn

Question

23. Photosynthesis is a process that

            a) takes place in animal tissue only

            b) synthesizes fatty acids with the aid of sunlight

            c) uses up oxygen and produces carbon dioxide

            d) produces carbohydrates for CO2 and H2O

24. Photosynthesis

            a) takes place in plants

            b) is the ultimate source of carbohydrates for animals

            c) has a net equation that is the opposite of the equation for respiration

            d) all of the above

25. Which of the following is the expected H-C-H bond angle in ethane, C2H6?

            a) 90o

            b) 109.5o

            c) 120o

            d) 180o

Explanation / Answer

Answer:

23). d) produces carbohydrates for CO2 and H2O

Explanation: Photosynthesis occurs in plant tissues only. It uses CO2, H2O and sunlight to produce carbohydrates, glucose and oxygen.

24). d) all of the above

Explanation:

The main product of photosynthesis is carbohydrates, which is feed for animals.

Photosynthesis equation:

6CO2 + 12H2O---------C6H12O6 + 6H20 + 602

Respiraiton equation:

6O2+ C6H12O6-------------6CO2 + 6H2O

25). b). 109.5o

Explanation:

Ethane, C2H6, has a geometry related to that of methane. The two carbons are bonded together, and each is bonded to three hydrogens. Each H-C-H angle is109.5° and each H-C-C angle is 109.5°.

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