Trevor wanted to find out what fertilizer worked best for growing marigolds. He put Miracle Grow on one, Scotts fertilizer on another, and no fertilizer on the third marigold. What is the control?
a. Marigold with no fertilizer
b. Type of fertilizer
c. Plant growth
d. Amount of water
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Ответ:
a. Marigold with no fertilizer
Explanation:
An experiment contains variables including independent and dependent variables. The independent variable is the variable that is changed by the experimenter, which is the TYPE OF FERTILIZER in this case, while the dependent variable is the measured variable, which is the GROWTH OF MARIGOLDS in this experiment.
However, a control group is a group that does not receive any experimental treatment. In other words, the independent variable is unchanged in the control group. The control group is regarded as the "normal" used to compare with the experimental group (group that receives treatment). In this experiment, the group of marigolds that DOES NOT RECEIVE FERTILIZER is the control group.
Ответ:
Option A
Explanation:
Usually, the cells first is able itself to regulate the usage of sugar type that yields highest growth rate and then consume sugar with lower growth rate and so on.
Considering this scenario E.Coli first consumes glucose and then lactose however both the sugar will result into diauxic growth
cAMP is responsible for activating the enzyme involved in metabolism of non-glucose sugars. The CRP protein of cAMP receptor is mainly responsible for activating the non-sugar metabolism enzyme . Along with this, cognate sugars also expresses gene
Hence, option A is correct