The very inside of the flower, at the center is the ovary. The ovary extends upwards to become the style and then the stigma on top of that. All three of these structures combined are called the pistil. Surrounding the style can be one or more filaments each with an anther on the top which contains the pollen. Around all of those structures are the petals, when combined are the corolla. At the base of the corolla, there are green leaves called calyx.directly under the ovary is the peduncle or stem. Please see the attached diagram for more information.
Answer:
D. I, IV, VI, and VII
Explanation:
DNA polymerase III has both 5' to 3' polymerization activity and 3' to 5' exonuclease activity (the proofreading). DNA pol III requires divalent magnesium ions for its polymerization and proofreading activities. Here, the magnesium ions serve as cofactor.
DNA polymerase III cannot start the process of synthesis of new DNA strand de novo and uses an RNA primer synthesized by primase enzyme. The polymerization activity of DNA polymerase III elongates the RNA primer in 5' to 3' direction. The primers are removed by 5' to 3' exonuclease activity of DNA polymerase I.
During polymerization, the DNA polymerase III uses existing DNA strand as a template. The four dNTPs namely deoxyadenosine triphosphate (dATP), deoxycytidine triphosphate (dCTP), deoxyguanosine triphosphate (dGTP) and deoxythymidine triphosphate (dTTP) are added to the RNA primer according to the sequence of DNA template.
Populations
communities
ecosystem
biosphere
1. anaphasespindle fibers pull back to the centromeres separating the sister chromatids, 2 sets of chromosomes are present
2. interphasecell grows, DNA is copies, organelles replicate
3. metaphasechromosomes line up in the middle of the cell on spindle fibers
4. telophasenuclear envelope forms, chromosomes unwind, spindle fibers dissolve
5. prophase chromosomes are visible, nuclear envelope breaks down, spindle fibers from between centrosomes
Diffusion has a major part in this. It has proteins embedded in it that allow molecules to diffuse in and out of the cell up and down its concentration gradient.
