What is the correct description of the components of an atp molecule?

a. adenine, an amino acid, bonds to a five-carbon sugar called ribose. the ribose molecule forms a bond with one phosphate. there are two other phosphate-phosphate bonds that complete the molecule.

b. nitrogen in adenine, an amino acid, bonds with a series of three phosphate molecules. the phosphate molecules form the "tail of the molecule" and are also attached to ribose, a five-carbon sugar molecule.

c. an amino acid called adenine bonds with a double-ringed sugar molecule called ribose. the ribose molecule forms a bond with one phosphate. there are an additional two phosphate-phosphate bonds to complete the molecule.

d. nitrogen and carbon bond to an amino acid called adenine. the amino acid bonds to a double-ringed sugar molecule called ribose. ribose bonds with three phosphate molecules.

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.