Answer:
A tsunami <u>reduces the carrying capacity</u> of the coastal environment.
It damages the ecosystem by reducing the available resources such as food or shelter, and consequently decreases the number of individuals.
Explanation:
Due to technical problems, you will find the complete answer and explanation to this question, in the attached files.
Three examples that biology can help in our everyday lives:
1. When you are faced with an animal, for example, a snake, you will know how to deal with it. You will examine what species that the snake belongs to and you will be able to identify its weaknesses.
2. When you are lost in a forest and that everything around you are plants and trees, you will know what kind of plant is edible or not and you can survive in the forest by utilizing what is available at your disposal.
3. You would also know what kind of food is good or not for the system. You will be able to analyze the kind of nutrient of the food you eat and how it will interact with your body system.
I think it’s Cytokinesis.
The correct answers are:
- Methylation of histone tails in chromatin can promote condensation of the chromatin.
- DNA is not transcribed when chromatin is packaged tightly in a condensed form.
- Acetylation of histone tails is a reversible process.
- Some forms of chromatin modification can be passed on to future generations of cells.
- Acetylation of histone tails in chromatin allows access to DNA for transcription.
Histone modifications are post-translational modifications of histone protein that can affect gene expression by altering chromatin structure or recruiting histone modifiers.The most common modifications are methylation, phosphorylation, acetylation and ubiquitylation. All of them affect the binding affinity between histones and DNA and thus loosening (gene activation) or tightening (gene repression) the condensed DNA.
Histone methylation is a transfer of methyl group by histone methyltransferases to lysine or arginine amino acid of protein. Effect of methylation depends on the type of protein that is modified. Demethylation is the reverse process.
Histone acetylation is the process of adding of an acetyl group(by histone acetyltransferases) to histone proteins and it can also activate or inhibit the gene expression. Deacetilation is reverse process.
Answer:
The correct answer will be option- D.
Explanation:
The prostate gland is a walnut-shaped gland present between the bladder and penis.
The prostate gland is a part of the reproductive system and not the urinary system as it helps in the nourishment and protection of the sperm cells. It secretes a fluid which contains enzymes like phosphatases, lytic enzymes and antibiotics which helps in the protection and passage of sperm to the egg cell.
Thus, option- D is the correct answer.
