IM CONFUSED
(1.)Which of the following is a well written hypothesis for this experiment?
A. If pineapple is added to gelatin, then it will become too watery to eat.
B. I think that the pineapple will melt when added to the gelatin.
C. If pineapple is added to gelatin, then the enzymes in the pineapple will stop the gelatin from solidifying.
D. If pineapple is added to gelatin, it will be more healthy and delicious.
(2.) Which of these choices are valid scientific observations? Choose all that apply. Yes or No questions
A. The coin sank to the bottom of the gelatin cup that contained pineapple. (Yes or No)
B. The coin looks gross. (Yes or No)
C. The coin stayed on top of the gelatin that did not contain pineapple. (Yes or No)
D. The gelatin did not change color when pineapple was added. (Yes or No)
(3.) This question requires at least one response per row What data could you collect from this experiment? Yes or No questions
A.) how pineapple tastes (yes or no)
B.) the amount of time gelatin without pineapple took to solidify (yes or no)
C.) the amount of coins gelatin without pineapple could hold (yes or no)
D.) the amount of time it took for a coin to sink to the bottom of the gelatin with pineapple added (yes or no)
(4.) Pineapple contains a protein-digesting enzyme called bromelain. When added to gelatin, it results in the enzyme eating the proteins in the gelatin and prevents it from firming. Based on this information, what does the pineapple contain that made its gelatin become watery?
A. Seeds
B. An enzyme called bromelain
C. Sugars known as fructose
(5.) What type of macromolecule is an enzyme?
A. carbohydrate
B. lipid
C. protein
D. nucleic acid
(6.)Which statement(s) are true about activation energy? (Mark all that apply)
A. Activation energy is needed for chemical reactions to occur.
B. Activation energy needs to be higher for endothermic reactions to occur
C. Activation energy needs to be higher for exothermic reactions to occur
D. Most chemical reactions can happen without activation energy
Someone help please
My answers I'm not sure if they are right
1. C
2. A. yes B. no C. yes B. no
3. Unsure
4. B
5. C
6. Unsure
I can help explain and provide guidance for each of the questions:
(1.) The well-written hypothesis for the experiment is option C. A hypothesis is a testable statement that predicts the outcome of an experiment. In this case, the hypothesis suggests that if pineapple is added to gelatin, the enzymes in the pineapple will stop the gelatin from solidifying. This hypothesis clearly states the relationship between the variables being tested (pineapple and gelatin) and makes a specific prediction about the outcome.
To arrive at this answer, you should evaluate each option and consider which one meets the criteria of being testable and making a clear prediction.
(2.) The valid scientific observations are:
A. The coin sank to the bottom of the gelatin cup that contained pineapple. (Yes)
C. The coin stayed on top of the gelatin that did not contain pineapple. (Yes)
D. The gelatin did not change color when pineapple was added. (Yes)
For this question, you need to determine which observations are measurable and objective. Observations that can be answered with "Yes" or "No" are considered valid.
(3.) The possible data that could be collected from this experiment are:
B.) the amount of time gelatin without pineapple took to solidify (Yes)
C.) the amount of coins gelatin without pineapple could hold (Yes)
D.) the amount of time it took for a coin to sink to the bottom of the gelatin with pineapple added (Yes)
For this question, consider which responses can be measured or observed and answer with "Yes" or "No".
(4.) The answer is B. Pineapple contains an enzyme called bromelain that digests proteins. This enzyme breaks down the proteins in gelatin, preventing it from firming and resulting in the gelatin becoming watery.
(5.) The correct answer is C. Enzymes are a type of protein. Proteins are macromolecules made up of amino acids and perform various functions in cells, including acting as enzymes.
(6.) The true statement(s) about activation energy are:
A. Activation energy is needed for chemical reactions to occur.
Activation energy is the energy required for a chemical reaction to start. It acts as a barrier that needs to be overcome for the reaction to proceed. Options B, C, and D are not applicable or accurate statements about activation energy.
I hope this helps clarify the answers! Let me know if you have any further questions.