Question

When discussing a sound scientific experiment which of the following guidelines should be followed?

A.Isolating one independent variable makes it simpler to evaluate for a causal relationship

B.Correlations data can be used to prove A hypothesis

C.The control group is ignored during comparisons

D.Constants are not always necessary

Which of the following statements describes the function of a ribosomes?

A.They convert food energy into cell energy

B.They facilitate protein synthesis

C.They maintain lipid production and Storage

D.They are used by cells to protect stands of DNA

Answer 1

Ans-1- while doing scientific experimentation we have to consider 3 importent variable.

A)- Independent variable- this is what we change during experiment in order to get a result. It varies according to the experiment.

B)- controlled variables- these are the things that never changes during experiments.

C)- Dependent variable- this is what we are looking for.

Correlation data cannot be used to test an attributive research hypothesis, but if it is a true experiment it can be used to test a causal hypothesis.

Now if we are dealing with one independent variable then it is very simple to find the relationship between the depenedent and independent variable.

So right answer is option A.

Ans-2- Ribosome are the cell organelles which comprises proteins and ribosomal RNA. There are small and large subuit of ribisomes which catalyses the process of protein synthesis (translation) along with the t-RNA and m-RNA in the cytosol.

So answer is option B