Answer:
B. Cells are the basic units of structure and make up tissues.
Explanation:
According to the cell theory, cells can be described as building blocks of an organism. All living things are made up of cells. All cells are made up of former living cells. The cell theory discarded the previous excepted theory of existence of cells from non- living things.
The image shows that in multicellular organisms like plants, different cells are present. Cells of a similar type combine to make tissues.
Answer:
elongation rate of strain of S.cerevisiae during transcription.
wild-type and experimental strain not treated with soultion of amanitin will be the control group. The elongation rate of mRNA of this group must be observed.
Explanation:
Dependent variable is one whose value depends on another value. Here effect of presence of mRNA polymerase enzyme and inhibtor on elnogatino rate of mRNA is being observed. So elongation rate is the dependent variable
Control group is one where independent variable whose effect is being observed can't influence the results. In experiment 2, the effect of inhibitor is being observed. So the control group must not have that inhibitor. Other conditions must remain same for experimentan and control group.
Each chromosome consists of two identical “sister” chromatids. Each pair of chromatids is attached at an area called the centromere. Hope this helped :)
