Which of the following correctly describes the structure, position, and function of the epiglottis?

Location: Thymus. Identify this blood vessel and its function.  

Location: Thymus. Identify the development state of the thymocytes in this location. What type of T cell selection happens here?  

This is a graph of the breakdown of the lactose. The enzyme that breaks down lactose is lactase. There are 6 blanks to fill in. Answer the following questions: why are there two lines? what differences do the two lines represent? which part of the reaction is endergonic and exergonic? Which part has a positive free energy and which part has a negative free energy?

BONUS: Explain how temperature, pH, substrate concentration, enzyme concentration, and specificity affect enzyme function. 

The heavy oxygen isotope (18O) could be provided to plants either in the CO2 or in H2O or in both. Today, we know from experimental results that O2 released from chloroplasts comes from H2O and not from CO2. Which of the following experimental results would show conclusively that O2 is released from H2O and not CO2?

The energy difference between the reactant glucose and oxygen molecules and the product water and carbon dioxide is 686 kilocalories, yet the 36 ATP molecules produced are only storing 263 kilocalories in their outermost phosphate bond. The rest of the energy

BONUS: Explain EITHER the Calvin cycle or the Citric acid cycle. Include (1) whether it is part of cellular respiration or photosynthesis reaction, (2) when it occurs, and (3) explain the cycle with reactants/products. Include any other pertinent information you know. 

The ultimate source of energy for the majority of organisms on Earth is

Name an enzyme that would be used during the ‘Library generation’ step in each experiment.