Question

What are the end products of photosynthesis in C4 and CAM plants

Group of answer choices

a,Oxaloacetate and pyruvate

b.water and crassulacean acid

c.oxygen and carbohydrate

d.carbohydrate and Oxaloacetate

2.During which of the following human cell cycles does a cell go from 2N to 1N?

Group of answer choices

a.Meiosis I

b.Meiosis II

c.Mitosis

d.None of the above

3.The MAJOR reason that aerobes cannot live in the absence of oxygen is that

Group of answer choices

a.The Citric Acid cycle needs to oxidize oxygen in order to complete its reaction

b.Glycolysis will not run in the absence of oxygen

c.The ETC uses oxygen as its final electron acceptor

d.All of the above

4.Which of the following stages of meiosis, if disrupted, would prevent genetic recombination through crossing over?

Group of answer choices

a.metaphase I

b.prophase I

c.metaphase II

d.prophase II

5.Which of the following is not produced during glycolysis?

Group of answer choices

a.NADH

b.Pyruvate

c.CO2

d.ATP

Answer 1

Q1. The correct option is: A (Oxaloacetate and pyruvate)

Explanation: In case of C4 plants

• Photosynthesis in the leaves of C4 plants involves two cell types: Mesophyll and bundle-sheath cells. In mesophyll cell the carbon gets fixed forming the stable compound oxaloacetate and moves to bundle-sheath cell and enters calvin cycle there so the end prooduct for C4 planta is oxaloacetate.
• CAM pathway is an adaptation evolved in some plants to arid conditions (Cactus and Pine apple), whose stomata opens during night time allowing CO2 to enter and be fixed as organic acids(malic acid) that are stored in vacuoles and closes during day time to reduce evopotranspiration. Therefore malic acid that is stored in the night gets converted to pyruvate in the day.