Answer:
The answer is B, control variable; Different groups of cattle are given different doses of antibiotics.
Explanation:
Control variable is a variable that is held constant in order to assess or clarify the relationship between other variables in an experimental design. Essentially, a control variable is what is kept the same throughout the experiment, and it is not of primary concern in the experimental outcome. Any change in a control variable in an experiment would invalidate the correlation of dependent variables (DV) to the independent variable (IV), thus skewing the results.
The concern of the experiment is the relationship between antibiotics and growth rate, hence the animals will be grouped in at least 3 treatment groups and each would be given different level of antibiotics, and a control group which won't be given any antibiotics. Though every other variable like feed, drink, temperature etc will be same for all groups including the control group in order to prevent bias.
At the end of the experiment, the control group which wasn't given any antibiotic will be compared with those groups which were given, hence the group which performs best would be determined.
The animal cell and the plant cell have some organelles in common but there are some organelles that belong to only one of the cell. In the question given here, mitochondria, cillia and ribosomes are found in both plant and animal cells. The cell wall is found only in the plant cell. So, the correct option is B
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Answer:
I think the passage is trying to tell the reader that they shouldn't lose faith in people/animals just because they are elderly/weak when they are loyal to you because it will hurt their self-esteem.
D and they were invented by Otis Frank Boykin
Hey buddy I am here to help!
Chromatin fibers are coiled and condensed to form chromosomes. Chromatin makes it possible for a number of cell processes to occur including DNA replication, transcription, DNA repair, genetic recombination, and cell division.
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