Easy, the independent variable is the only thing that can differ in an experiment, if you want to keep it fair.
Answer:
Bacterial transformation is the transfer of free DNA released from a donor bacterium into the extracellular environment that results in assimilation and usually an expression of the newly acquired trait in a recipient bacterium
Explanation:
C. Speedometer
Explanation: Hope this helps but a speedometer does in fact let you know how fast your vehicle is going.
Answer:
(C). white blood cell production
Explanation:
CSFs (colony stimulating factors) are glycoproteins that activate intracelluar pathways and promote proliferation of hemopoietic stem cell to form immune cells (white blood cells).
CSFs are released in response to infection and interacts with blood stem cells to produce new immune cells. These resulting new immune cells create an army of cells to fight against the infection and provide immunity.
Thus, the correct answer is option (C).
Answer:
Protists are unicellular eukaryotes which show both plant and animal characters and these are considered as a bridge between plants and animals.
Explanation:
Protists are single-celled life forms and are eukaryotic organisms. Some of the protists like euglena shows both plant and animal characteristics. Protists are important in the following aspects -
- These are a good source of food for many animals. For example phytoplankton is the major source of food for whales. Zooplanktons also serve a good source of food for many aquatic organisms. These organisms often serve as the foundation of the food chain.
- By doing photosynthesis they also used to be beneficial in the balance of ecosystem.
- Some protists are also used as biofuel.
- They often show symbiotic relations with other organisms.
