Answer: D. cell
Explanation:
The cell theory suggested three proposed statements those were all living things are composed of cells, the cell is the smallest entity of life and all cells formed from the pre-existing cells. This discovery is attributed to Robert Hook, who first began the study of cells in his self constructed microscope. But two scientists named as Matthias Schleiden and Theodor Schwann were the contributors of this theory in 1839.
Answer;
- the chance that something will happen
Explanation;
Probability is the extent to which something is probable; the likelihood of something happening or being the case. It is the chance that something will happen.
- We say it is the likelihood of an event happening, an event being a set of outcomes of an experiment to which a probability is assigned. Probability may be calculated by getting the ratio of the favorable (wanted) outcomes divided by the possible outcomes.
basic
alkaline
neutral
Answer:
The answer is D. neutral.
Root hair cells are specialized cells found in the root epidermis of plants, which have a function of absorbing water and minerals from the soil.
Root hair cells are one of the most specialized cells of a plant, with long, thin protrusions extending out of the cell that increase the surface area available for absorption of nutrients. These cells are specifically adapted for their function of absorbing water and minerals from the soil.
The thin cell wall and large central vacuole in the root hair cell allow for the diffusion of water and minerals into the cell. Additionally, the presence of numerous mitochondria in the cell allows for active transport of ions against a concentration gradient, which is required for the absorption of some minerals.
The specialization of root hair cells is not limited to their morphology, but also extends to their gene expression. Several genes have been identified that are specifically expressed in root hair cells, and they play a crucial role in the development and function of these cells.
Overall, root hair cells are a crucial component of plant nutrition, and their specialized structure and function allow for efficient uptake of water and minerals from the soil.
Learn more about hair
#SPJ11
B. the specific sequence of bases along the DNA strands
C. the location along the chromosome where the double-stranded DNA unwinds
D. the position of the gene’s promoter on the chromosome
E. which of the two strands of DNA carries the RNA primer
Answer:
D. the position of the gene’s promoter on the chromosome
Explanation:
Transcription is the first stage of gene expression or protein synthesis. It is the process of synthesizing a complementary strand of mRNA from a DNA template. This synthesis of complementary RNA strand I carried out by an enzyme called RNA polymerase. RNA polymerase does this by adding complementary nucleotides to the growing RNA strand (3'-5') based on the nucleotide it reads on the 5'-3' of the DNA template.
Before transcription can start, the RNA polymerase needs to recognize and bind to a specific region of the gene called PROMOTER. This signals initiation of the transcription process and also tells the polymerase which unwinded strand of DNA will serve as the template strand and hence, in what direction nucleotides will be added.
N.B: Only one of the separated DNA strands will serve as a template for the synthesis of RNA
B. replaced
C. preserved
D. bonded