The correct answer is: a. A site in DNA that recruits the RNA Polymerase
Promoters are regions of DNA molecule located near the transcription start codons of genes, usually upstream on the DNA with the function to initiate DNA transcription. Promoters contain specific DNA sequences (e.g. TATA boxes) that are binding sites for the enzyme RNA polymerase and transcription factors that recruit RNA polymerase. Transcription factors can regulate gene expression and act as activators or repressors depending on sequences that attach to specific promoters.
Answer:
The correct option is a decomposers
Explanation:
Decomposers can be described as organisms which feed on dead and decaying material. These organisms break down molecules and use them as a source of food. Among the options mentioned, the option of decomposers is the only one which is applicable to fungus like protists and is unique to it. On the other hand, Plant like protists make their own food by the process of photosynthesis. Hence, option A is correct.
All of the following (corals, jellyfish, and sea anemones) have only one opening into their digestive system, except roundworms, which have more than one.
Answer: Here are some ecosystems i've heard of: are forests, grasslands, deserts, tundra, freshwater and marine. The word “biome” may also be used to describe terrestrial ecosystems which extend across a large geographic area, such as tundra.
The four ecosystem types are classifications known as artificial, terrestrial, lentic and lotic. Ecosystems are parts of biomes, which are climatic systems of life and organisms. In the biome's ecosystems, there are living and nonliving environmental factors known as biotic and abiotic.
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