Why do we have different cells in our bodies if every cell has the same DNA?
The genome of a cell contains in its DNA sequence the information to make many thousands of different protein and RNA molecules. A cell typically expresses only a fraction of its genes, and the different types of cells in multicellular organisms arise because different sets of genes are expressed.
Answer:
The evolution of the pillar coral as an organism dependent on the zooxanthellae can be demonstrated by an experiment conducted by the student.
Explanation:
Zooxanthellae are photosynthetic algae which reside in the tissues of most of the reef-building corals. Both of this exhibit mutualistic relationship where in the corals protect the algae and also provide the necessary compounds for photosynthesis. The algae in return of this, produces and provides oxygen and also helps the coral remove its wastes. A student can conduct an experiment on this phenomenon of mutualistic behaviour by removing the zooxanthellae from the corals which may even kill the coral.
<span>The answer is letter B. ecosystem diversity. The marine biome is the largest of all the ecosystems. Ecological diversity is one of the type of biodiversity. It is the different kind of the ecosystems found in a region or the variation in ecosystems over the whole planet.</span>
The movement of various substances into a plant, usually from the soil, out of which the green plant synthesises the numerous complex organic compounds, is accomplished, principally through the agency of the process known generally as diffusion.
In some cases, however, the operation of the diffusion phenomena is complicated by other factors
Yes, you are right. A student reported that a limp stalk of celery became crisp when placed in ice water. This is an example of an observation.
Observation is the process of actively acquiring information from a source of study. When the observation is collected using the senses, it becomes an empirical evidence. However observations are also scientifically recorded using various scientific instruments for precision and accuracy. Example, use of thermometer to record the room temperature.