Answer:
1. D (explanation: all the other choices you are able to "observe" on the chart)
2. D (explanation: you are able to see the pig's weight go up on the chart to see that the diet is working)
3. B (explanation: because it shows "number")
4. A (explanation: because it shows the description of what is being observed)
5. C (explanation: you can only assume that the car is being burglarized because the alarm is going off)
6. A (explanation: you are observing "numbers")
7. B (explanation: you are able to see the clear liquid--everything else is not observable because there are no markings to show what each one is describing)
Explanation:
Answer:
the scientist has determined that the chemical isolated from charcoal-grilled meat is an oxidant.
Explanation:
oxidants are oxidizing agents. oxidants have the capacity to damaging living cells. vitamin C on the other hand is an active antioxidant, hence it was able the breakdown of the cells.
Answer:
A mutation during protein synthesis may not affect the protein since the mutation causes a new code for the same amino acid, the protein will still function normally.
Explanation:
Protein synthesis depends on the transcription of DNA to RNA, and on the sequence of nucleotides in the chain, determining the triplets or codons that encode a specific amino acid.
In protein synthesis, when a mutation alters the codon, changing one nucleotide for another, it is possible that the mutation does not alter the amino acid and the protein functions correctly. This is because an amino acid can be encoded by several codons, as occurs with leucine, which is encoded by CUU, CUC, CUA and CUG.
<em> The other options are not correct because one mutation does not give better amino acids or more powerful proteins.</em>
Answer:
A. "I will advise a client with a blood pressure of 130/80 mm Hg to follow up in a year."
Explanation:
The normal blood pressure value is 120/80
A value of 130/80 could be the stage 1 of hypertension (high blood pressure). As this is the very limit, the client should check his/her blood pressure frequently in order to know if this progress to an hypertension or it is mainteined in the limit value.
The blood pressure chart:
Systolic Diastolic
Hypotension <80 or <60
Normal 80-120 and 60-80
Pre-hypertension 120-139 or 80-89
Hypertension level I 140-159 or 90-99
Hypertension level II 160 or above or 100 or above
Hypertensive Crisis >180 or >110
Answer:
The correct answer is option D. "I, II, and III".
Explanation:
The environment’s ability to meet present and future needs is directly related to technology and social organization:
I. Environmental impacts depend on population density. The higher the population density in a region, the more likely it suffers from environmental impacts caused by people's bad practices.
II. Affluence determines people’s level of consumption, and hence, their environmental impact. People with great affluence are more likely to cause major environmental impact, has they consume more products and have luxuries such as private air and water transportation which generates environmental impact.
III. Modern technological advances have made it possible for humans to significantly alter planetary systems. For instance, human satellites produce space debris, which can possibly alter planetary systems.
