Question

mestion Completion Status: Why did I suggest that the secret to life is electrons and protons? A. Because redox reactions are necessary for all of the reactions in live cells and these redox reactions require both H+ and electrons B. Because electrons carry a negative charge and protons have a positive charge C. Because most (not all) cells need electron transport and H+ gradients to make ATP D. Because electrons are necessary for the electrical responses of the cell (like Vm) and protons help to set the charges on proteins QUESTION 22 Which of the following is true? O A All membrane proteins are mobile in their membrane so they have good enough rates of lateral diffusion to be useful in a Frye-Edidin type of experiments OB. Since extracellular matrix proteins are structural proteins on the outside of cells, they are not involved in signal transduction C. Plasma membrane receptors can be either glycoproteins or glycolipids OD. Most membranes have about 60% protein and 50% phospholipids Click Save and submit to see and submit. Click Save All Answers to all over

Answer 1

21.- The answer is option A) Because redox reactions are necessary

22.- The answer is option C) Plasma membrane receptors can be either glycproteins or glycolipids

23.- D) Changes in the DNA sequence of a gene

24.- C) To produce pyruvate, NADH and a little bit of ATP

25.- B) Electron trnsport from NADH to O2.

That is incorrect because that only occurs in mitochondria, in chloroplast oxygen is not required a final acceptor

26.- D) The curve would shift to the right and the transition temperature would increase

Unsaturated fats are more fluid, they require less temperature to even become liquid, if we decrease their number then the membrane becomes more rigid since the melting temperature would increase

27.- A) Since the thick filaments are connected to the Z lines, the Z lines come together

28.- D) Carbohydrates are synthesized

This occurs in the light INDEPENDANT reactions, not in the light reactions

29.- You forgot to include the question, we will gladly help you once you bring the question

30.- The last option: ATP, always