The following narrative about mitochondria and chloroplasts is wrong

The narrative is wrong

Mitochondria are the main site of aerobic respiration in eukaryotes (at this location, pyruvate is broken down step by step through the tricarboxylic acid cycle into CO2 and water and release ATP), and aerobic respiration can also occur in prokaryotes, where it occurs in the cell membrane.

It can be said that the presence or absence of mitochondria cannot be the criterion for whether it has walkable respiration, but it can only be said that if there are mitochondria, the cells can undergo aerobic respiration.

A is completely true, both carry genetic information and are expressed (some enzymes in mitochondria and chloroplasts are produced that are not expressed in the chromosomal genome, and these enzymes are regulated by the expression of DNA contained in both).

The place of occurrence for the cell membrane is incorrectly described as B

Mitochondria are the main site of aerobic respiration in eukaryotes (where both carry genetic information and are expressed (some enzymes in mitochondria and chloroplasts are produced that are not expressed in the chromosomal genome).

A is completely true, aerobic respiration can also occur in prokaryotes, it can only be said that if there are mitochondria, the cells can undergo aerobic respiration.

It can be said that the presence or absence of mitochondria cannot be the criterion for whether it has walkable respiration, and pyruvate is decomposed step by step through the tricarboxylic acid cycle into CO2 and water and releases ATP).

A should be correct, chloroplasts and mitochondria have their own DNA that can be transcribed into RNA and then translated into proteins, so it can be expressed.

b Incorrect Some prokaryotes like bacteria do not have mitochondria and their enzymes that are involved in respiration are located on the cell membrane and can also perform aerobic respiration.

A: Yes, because DNA in mitochondria and chloroplasts can be easily transcribed and translated into proteins for expression, while RNA can be.

b This is not true, because there are no mitochondria, but there can be aerobic respiration, enzymes for aerobic respiration, and some prokaryotes can have.

Prokaryotes such as cyanobacteria are free of chondria but are still capable of aerobic respiration.

A pair, the genetic material they carry on their own can be expressed.

B, mitochondria are the main sites of aerobic respiration, but nonchondrial cells can also perform aerobic respiration because they have enzymes in their cytoplasm that are aerobic respiratory. If you need oxygen-type prokaryotes, cyanobacteria, etc.

a.Genes in mitochondria and chloroplasts can be expressed, called "cytoplasmic genes", and they all have the same role as genes in the nucleus.

b.The organelles in prokaryotic cells are only ribosomes and unchondria, but ordinary prokaryotic cells can also perform aerobic respiration.

b is false and is not compatible with single-celled organisms. A said yes, but didn't say it was certain.

b Prokaryotes do not have mitochondria and can perform aerobic respiration.

A has only chloroplasts, and B is definitely right.

A In the textbook of the first year of high school, there seems to be DNA in both mitochondria and chloroplasts, which can show a certain degree of genetic independence.

b For example, humans are eukaryotes with mitochondria but no chloroplasts, and c d Because cyanobacteria have phycocyanin and chlorophyll, they can also photosynthesize.

d. Correct. The thylakoid structure of chloroplasts and the folded inner membrane of mitochondria both increase the surface area of the membrane.

Answer: A Mitochondria and chloroplasts are both semi-autonomous organelles and both contain a small amount of DNA, A is correct. ATP in chloroplasts is produced during the light reaction phase of photosynthesis; In the dark, no light reaction can be carried out, no ATP is generated, B error. The first stage of aerobic respiration and the entire phase of anaerobic respiration occur in the cytoplasmic matrix, and both produce ATP,C errors required for cellular vital activities.

The mitochondrial matrix contains enzymes involved in the second phase of aerobic respiration reactions; Whereas the chloroplast matrix contains enzymes involved in the dark reaction of photosynthesis, d error. This question comprehensively examines the structure and function of mitochondria and chloroplasts, photosynthesis and respiration, and belongs to the examination of the level of recognition and understanding.

d Prokaryotes do not have organelles, but some prokaryotes have respiratory chains on the surface of their cell membranes that allow aerobic respiration.

c Mitochondria are just the last step in aerobic respiration. The first two steps of aerobic respiration, anaerobic respiration, are carried out in the cytoplasmic matrix.

The mitochondria of the B pair of the A pair are the sites where aerobic respiration takes place and the chloroplasts are the sites where photosynthesis takes place. There are corresponding enzymes on the surface of the inner membrane.

1. Right. Light.

2. The material changes of light reaction in chloroplasts include photohydrolysis: H2O---2 [H+1 2O2; The shape of ATP.

Second, the third stage, the second stage reactant is pyruvate and H2O, which generates CO2, [H], and ATP, and the third stage reactant is [H], O2, and the product is H2O and ATP, so [H] is formed and generated after water, so the second half of the sentence is also wrong.

3. Fixation of CO2 in chloroplasts: CO2 combines with C5 to form two C3s; reduction of C3 to form C6H12O6 and C5; There is no C3 production in mitochondria.

1 is correct.

2. There should be no H production in the mitochondria

3 There will be no C3 in the mitochondria

Answer: Mitochondria and chloroplasts are both organelles that contain a small amount of DNA and RNA and produce ATP.

Answer] D answer car empty case analysis] test question analysis: mitochondria and chloroplast both have a double-layer membrane structure, the matrix contains a small amount of DNA and RNA, which are related to the slow exchange of energy, photosynthesis in chloroplast converts light energy into electrical energy and then into chemical energy, and respiration in mitochondria converts most of the chemical energy into mechanical energy, electrical energy, heat energy, etc., because the functions of the two are different, so the types of enzymes they contain are also different.

Test point: This question examines the structure and function of cells, and is intended to test students' ability to use the knowledge and opinions they have learned to explain and reason about certain biological problems through comparison, analysis and synthesis, and make reasonable judgments or draw correct conclusions.

【Answer】c

Answer Analysis] Test Question Analysis:

Mitochondria are the main sites for aerobic respiration, and chloroplasts are sites for photosynthesis, both of which are related to energy conversion, so b is correct; Both have a double membrane, a correct; The function of the two is not the same, so the function of the enzyme is not the same, c is wrong. Prokaryotic cells have only ribosomes as an organelle, so there are no chloroplasts and mitochondria, d is correct.