The movement of H+ through the ATP synthase is best described as an example of __________. The movement of H+ through the ATP synthase is best described as an example of __________. simple diffusion hydrolysis active transport facilitated diffusion
Oxidative phosphorylation, involving the Electron transport chain and Chemiosmosis is the third stage of cellular respiration. The main purpose of the ETC is to build an electrochemical (electrical and concentration) gradient across the inner mitochondrial membrane. It does this by using energy to pump protons (H+ ions) from the matrix to the inter-membrane space of the mitochondria.
Facilitated diffusion, also known as passive transport through channels, is a form of facilitated transport involving a passive movement of molecules along their concentration gradient, through channels called membrane proteins.
During Chemiosmosis of Oxidative phosphorylation, protons (H+) flow back down their concentration gradient (from inter-membrane space to matrix) due to the chemiosmotic gradient that has been formed in ETC. However, hydrogen ions (H+) cannot pass through the inner mitochondrial membrane except through an enzyme (protein) found in the inner mitochondrial membrane called ATP synthase. This protein acts as a machine powered by the force of the H+ diffusing through it, down an electrochemical gradient. This movement of H+ via ATP synthase further catalyzes the conversion of ADP to ATP.
It is an example of facilitated diffusion because H+ ions are diffusing across the inner mitochondrial membrane (from inter-membrane space to matrix) via a protein channel or membrane protein called ATP synthase.
A researcher conducted crosses between two different strains of Drosophila. When true-breeding flies with singed bristles (s) and normal wings (L) were crossed to true-breeding flies with normal bristles (S) and vestigial wings (l), all F1 offspring had normal wings and normal bristles. The F1 offspring were crossed to flies with singed bristles and vestigial wings. Which F2 offspring is/are recombinant? (A) Singed bristles/vestigial wings only
(B) Singed bristles/normal wings only
(C) Singed bristles/normal wings and normal bristles/vestigial wings
(D) Singed bristles/vestigial wings and normal bristles/normal wings
Singed bristles/vestigial wings and normal bristles/normal wings
The recombinant progeny might occur due to the crossing over of the homologous chromosomes in case of the linked genes. This progeny are different from their parent progeny.
The F1 offspring obtained from the given cross in the question results in the normal wings and normal bristles ( SsLl). This progeny was crossed with singed bristles and vestigial wings (ssll). The progeny obtained from their cross are 'Sl' and 'sL' ( parental type ) and SL' or 'sl' ( recombinant).
Thus, the correct answer is option (D).
What happens when an antibody binds an antigen? A) It increases body temperature.
B) It causes pathogens to stick together.
C) It starts the inflammatory response.
D) It produces cytotoxic T cells.
your answer is b
Without wildfires, forest ecosystems would be more likely to suffer from outbreaks of plant disease. please select the best answer from the choices provided t f
Explanation: The wildfires has many positive aspects as compared to its negative ones. The forest fire can be a result of human activities or it can be due to natural sources.
The forest fire helps in removing the soil contamination and hence prevents the plant disease. Though it eradicated the animals and loss of habitat takes place but besides this there are many more advantages of forest fire.
It helps in removal of the diseased plants and harmful insects that spreads diseases.
Select all that apply. For the photosynthesis process to occur, a plant needs _____. sunlight chlorophyll nitrogen carbon dioxide nutrients water
Select all that apply. An ecosystem could probably survive without _____.
I feel like this is a trick question but I can't figure it out.
There are five basic components without which an ecosystem could not survive -
The entire energy of an ecosystem comes from the sun, thus sun is essential. Similarly , water and climate is also essential. Water provides the free electron during the photosynthesis reaction and fair climate ensures visibility of sun. Producers produce food which is consumed by herbivores , thus both plants and herbivores are important. Plant takes nutrients from soil thus soil is also important. Now if carnivores are removed from the ecosystem, then herbivores will die naturally and their dead bodies will be decomposed by the decomposers.
Thus, without carnivores an ecosystem could probably survive.
All of the following biotic and abiotic factors are necessary to an ecosystems ability to function.
Using the information in the genetic code of DNA, both the processes of transcription and translation together produce ______.
When does Cellular respiration occur and where is the location cellular respiration is?
When an organism is asexually it usually has