Answer:
An ecologist must consider both of the speciation and extinction of an organism or when analyzing the diversity the life on earth because of the following reasons;
- It is a role of an ecologist
- It is part of their job
- This will tell the existence of the organism
- The organism’s life span on earth
- How it was existed and were extinct
Explanation:
Answer:
d. Ribosome
f. Cell wall
Explanation:
In humans 80s type of ribosome is present and in bacteria 70s type of ribosome is present. Human cells do not have cell wall while bacterial cells have peptidoglycan cell wall. These differences can be targeted by the potential antibacterial agents.
For example, tetracycline antibiotic inhibits the binding of important molecules to bacterial ribosome which ultimately inhibits the protein synthesis in bacteria. Vancomycin antibiotic on other hand inhibits the cell wall formation in bacteria by inhibiting peptidoglycan synthesis.
Answer:
The correct answer would be a. Fragments of DNA that have desired genes are isolated to form recombination DNA for use in a host. Genetic engineering refers to the direct manipulation or modification of the desired gene in a cell in order to produce novel or improved organism.
Explanation:
The correct answer is: [C]: "the rain" .
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Answer:
In the food chain, producer makes the base, primary and secondary consumers are present in the middle and tertiary consumers is present on the top.
Explanation:
Producers are the organisms which makes their own food such as plants. They are placed at the base due to high population. Primary and secondary consumers are placed in the middle due to less population than producer and tertiary consumers are placed on the top due to very low population.
