Which statement best describes photophosphorylation? a) it is the conversion of light energy to chemical energy. b) it is the flow of hydrogen ions down a concentration gradient. c) it is the process by which light energy is captured to form simple sugars using water and carbon dioxide and to release oxygen gas as a byproduct. d) it is the addition of a phosphate group to adp to form atp using light energy absorbed during photosynthesis.

The correct answer is  D) It is the addition of a phosphate group to ADP to form ATP using light energy absorbed during photosynthesis.  

Photophosphorylation can be defined as a process of formation of ATP ( adenpsine triphosphate) from ADP ( adenosine diphosphte) by using the energy from sunlight. In other words, it is the addition of phosphate molecule to ADP using energy from sunlight.

It takes place during the light dependent phase of photosynthesis when energy from sunlight is captured by chlorophyll that converts it into chemical energy in the form of ATP and NADPH. This is further utilized in the formation of carbohydrate ( glucose) in light independent phase.    

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.