B. Nutrients are lost from the ecosystem when organisms die.
C. The conversion of food into growth by an organism is not very efficient.
D. Energy is recycled by the decomposers back to the producers.
There are no more than five species in an ecosystem due to the conversion of food into growth by an organism is not very efficient. Thus option C is correct.
The food chain is a linear cyclical event where the transfer of nutrient and energy occur from one organism to the other.
Trophic level is defined as the stages involve in food chain which start with producers, primary, secondary and tertiary consumers.
The major parts of food chain are the sun is the primary source of energy.
Secondly producers include autotrophs such as plants, phytoplankton, cyanobacteria represent first tropic level in a food chain.
Consumers includes herbivores, the primary consumers which eat plants, carnivores are animals which eat other animals, parasites that live on other organisms, others are scavengers eat dead decaying matter.
Decomposers integral part of food chain get energy from dead or waste organic material.
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Most communicable diseases are either bacterial or viral and infect the respiratory tract.
B.
All communicable diseases are viruses that cause pneumonia.
C.
Most communicable disease are bacteria and viruses that infect the intestinal tract.
D.
All communicable diseases are bacteria that grow in the respiratory tract.
after reading this:
A communicable disease is an illness transmitted through contact with microorganisms. People, animals, food, surfaces, and air can all be carriers of the microorganisms that pass infectious illnesses from one host to the next. The exchange of fluids or contact with a contaminated substance or individual may be enough to allow a communicable disease to spread.
what do you think the answer is?
Most communicable diseases are either bacterial or viral and infect the respiratory tract.
Communicable, or infectious diseases, are generated by microorganisms such as parasites, fungi, bacteria, and viruses, which can be spread, directly or indirectly, from one person to person.
A majority of upper respiratory diseases are due to self-limited viral epidemics. Occasionally, bacterial germs may produce upper respiratory infections. Most often, upper respiratory virus is communicable and can spread from person to person by breathing respiratory droplets from coughing or sneezing.
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
Organisms are classified as fungi if they have chitin in their cell walls.
Fungi are eukaryotic organisms (such as yeasts and molds) that usually have chitins in their cell walls but no chlorophyll or plastids. Fungi may be unicellular or multicellular. Fungi do not photosynthesize but they are heterotrophs like animals. They get their food by absorbing dissolved substances and they usually reproduce by means of spores.
Answer;
5,000 amino acids.
Explanations;
Amino acids are the basic building blocks of proteins; contains a carboxyl group (-COOH) and an amino group (-NH2).
Proteins are large, complex organic molecules consisting of a large number of amino acids linked together by peptide bonds.
A protein may consist of as many as 5, 000amino acids.