Biology
Homework Title: Photosynthesis and Respiration
1) Define these terms and arrange them from smallest to largest: Ch 5 WIO #3
• Thylakoid membrane
Answer: Thylakoid membrane is a compartment in a plant cell that has light pigment that carry out the photosynthesis process.
• Chloroplast
Answer: Chloroplast is a type of organelle found in plants and algae that carry our photosynthesis.
• Reaction center
Answer: Reaction center is where chlorophyll a molecule and other associated proteins utilize energy for photosynthesis reactions.
• Photosystem
Answer: A photosystem consist of chlorophyll a accumulated with other pigment molecules and the proteins that secure the entire complex of the thylakoid membrane.
• Electron transport chain
Answer: A group of proteins that transport electrons, releasing energy step-by-step. Electron transport chain connects both photosystems I and II for ATP synthesis.
Answer: Arrangement of terms from smallest to largest: Reaction center, photosystem, electron transport chain, thylakoid membrane, chloroplast. 2) Explain why each of the following misconceptions about photosynthesis is false: CH5 WIO #15
• Only plants are autotrophs
Answer: False. Certain bacteria, protists and archaea are also autotrophs. Autotrophs are able to create their own food using light source and photosynthesis process or through obtaining energy through oxidation. Some example of living organisms that is autotrophs that is not plants are red algae and cyanobacteria.
• Plants do not need cellular respiration because they carry out photosynthesis
Answer: False. Plants also undergo respiration like any other living organisms to generate ATP for endergonic reactions.
• Chlorophyll is the only photosynthetic pigment.
Answer: False. Chlorophyll is not the only photosynthetic pigment but it is the most abundant type of photosynthetic pigment which is known as chlorophyll a. There are
1) Define these terms and arrange them from smallest to largest: Ch 5 WIO #3
• Thylakoid membrane
Answer: Thylakoid membrane is a compartment in a plant cell that has light pigment that carry out the photosynthesis process.
• Chloroplast
Answer: Chloroplast is a type of organelle found in plants and algae that carry our photosynthesis.
• Reaction center
Answer: Reaction center is where chlorophyll a molecule and other associated proteins utilize energy for photosynthesis reactions.
• Photosystem
Answer: A photosystem consist of chlorophyll a accumulated with other pigment molecules and the proteins that secure the entire complex of the thylakoid membrane.
• Electron transport chain
Answer: A group of proteins that transport electrons, releasing energy step-by-step. Electron transport chain connects both photosystems I and II for ATP synthesis.
Answer: Arrangement of terms from smallest to largest: Reaction center, photosystem, electron transport chain, thylakoid membrane, chloroplast. 2) Explain why each of the following misconceptions about photosynthesis is false: CH5 WIO #15
• Only plants are autotrophs
Answer: False. Certain bacteria, protists and archaea are also autotrophs. Autotrophs are able to create their own food using light source and photosynthesis process or through obtaining energy through oxidation. Some example of living organisms that is autotrophs that is not plants are red algae and cyanobacteria.
• Plants do not need cellular respiration because they carry out photosynthesis
Answer: False. Plants also undergo respiration like any other living organisms to generate ATP for endergonic reactions.
• Chlorophyll is the only photosynthetic pigment.
Answer: False. Chlorophyll is not the only photosynthetic pigment but it is the most abundant type of photosynthetic pigment which is known as chlorophyll a. There are