A food pyramid is a represntation of predatory relationships in the food chain.
Answer:
2. The US uses far less renewable energy than most other countries.
Explanation:
US uses very less renewable entgy in comparison to other countries because of several reasons such as:
- overall cost of renewable energy is very high.
- limitations to geography.
- can cause pollution, such as biomass.
- fossil fuels are more reliable as do not depend on other environemntal fluctuations such as solar light.
Hence, the correct option is 2.
The limitations in designing and building an eco-friendly home in Illinois will be climate constraints and social limitations.
<h3>What are eco-friendly homes?</h3>
Eco-friendly homes are homes which are designed such that they do not pose any danger to the envrionment.
Eco-friendly homes are compatible with the environment and make use of available environmental resources to design an environmental-friendly home.
The limitations in designing an eco-friendly home in Illinois will be:
- Climate constraints - due to hot climatic conditions
- Social constraints - due to its dense population
Therefore, the limitations in designing an eco-friendly home in Illinois will be climate constraints and social limitations.
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Answer:
inactive proteins can be activated by phosphorylation
Explanation:
Proteins are regulated after translation by the non-covalent binding of small molecules. These molecules include amino acids or nucleotides. A change in the conformation and thus, the activity of the protein is usually achieved when this occurs.
Proteins could also be regulated by phosphorylation which is the addition of phosphate groups of specific amino acids on the protein.
Answer:
In eukaryotes, thousands of chemical reactions are able to take place in separate compartments called organelles.
Explanation:
Organelles are specific cellular structures that are the means of compartmentalizing the various functions that occur within cells.
Examples of organelles and their functions are:
- <u>Nucleus</u>: contains DNA and in it occur the replication of this molecule and its transcription into RNA.
- <u>Rough endoplasmic reticulum</u>: protein synthesis and conjugation of these molecules occurs.
- <u>Mitochondrion</u>: houses all oxidative phosphorylation reactions and the electron transport chain for ATP synthesis to occur.
The organelles are then the structures that allow the development of the multiple functions that a cell has.
The other options are not correct because:
- <em><u>Bacteria</u></em><em> is a prokaryotic organism.
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- <em><u>Prokaryote</u></em><em> refers to simple organisms that lack organelles.
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- <em><u>Proteins</u></em><em> are biomolecules that allow the structure and function of living beings.</em>
