Answer the following question given this paragraph: Q: What does rearrangements of chromosomes contribute to the emergence of? Choices: - clones - extinction - fewer species - new species A:
new species
(Question)
Answer the following question given this paragraph: Some sunlight is good for your health. Vitamin D is made in the skin when it is exposed to sunlight. But getting too much sun can be unhealthy. A sunburn is a burn to the skin that is caused by overexposure to UV radiation from the sun's rays or tanning beds. Q: Which vitamin is made in the skin when it is exposed to sunlight? Choices: - Vitamin C - Vitamin B1 - Riboflavin - vitamin d A:
(Answer)
vitamin d
Ques: Answer the following question given this paragraph: Thus the potential of a galvanic cell can be used to measure the pH of a solution. Exercise Suppose you work for an environmental laboratory and you want to use an electrochemical method to measure the concentration of Pb2+ in groundwater. You construct a galvanic cell using a standard oxygen electrode in one compartment (Ecathode = 1.23 V). The other compartment contains a strip of lead in a sample of groundwater to which you have added sufficient acetic acid, a weak organic acid, to ensure electrical conductivity. The cell diagram is as follows". Q: The potential of what can be used to measure the ph of a solution? Choices: - electrodes cell - symbiotic cell - stimulation cell - galvanic cell A:
Ans: galvanic cell
(Q).
Answer the following question given this paragraph: that extends the 3' end, so a primer is synthesized and extended. Thus, the ends are protected. 16 The cell controls which protein is expressed, and to what level that protein is expressed, in the cell. Prokaryotic cells alter the transcription rate to turn genes on or off. This method will increase or decrease protein levels in response to what is needed by the cell. Eukaryotic cells change the accessibility (epigenetic), transcription, or translation of a gene. This will alter the amount of RNA, and the lifespan of the RNA, to alter the amount of protein that exists. Eukaryotic cells also change the protein's translation to increase or decrease its overall levels. Eukaryotic organisms are much more complex and can manipulate protein levels by changing many stages in the process. Q: Which cells change the accessibility, transcription, or translation of a gene? Choices: - endogenous - prokaryotic - ribosomes - eukaryotic A:
(A).
eukaryotic
Ques:Answer the following question given this paragraph: Discussions of colors can sometimes become confusing because of the difference between light emitters and light absorbers. Light absorbers, such as dyes and pigments, absorb frequencies from those that you see, while light emitters add frequencies to what you see. If I were to shine red light, green light, and blue light into your eye all at the same time, you would likely see some variation of white. If I were to mix red paint, green paint, and blue paint together, you would likely see black or some very dark color. Q: What do light emitters do to what you see? Choices: - divide frequencies - subtract frequencies - block frequencies - add frequencies A:

Ans:add frequencies
Answer the following question given this paragraph: Living things depend on catalysts to speed up many chemical reactions inside their cells. Catalysts in living things are called enzymes. Enzymes may be extremely effective. A reaction that takes a split second to occur with an enzyme might take billions of years without it!. Q: What speeds up chemical reactions inside cells? Choices: - nucleus - inhibitors - electrodes - catalysts A:
catalysts