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.
Your answer would be B) Phenotype.
x
The answer is A
Light is captured and stored in vacuoles
Answer:
water and oxygen
Explanation:
The model in the image depicts photosynthesis and cellular respiration processes. Photosynthesis involves the synthesis of glucose and oxygen from carbon dioxide and water while cellular respiration involves the production of carbon dioxide and water from glucose and oxygen. This means that both reactions are opposite of one another.
According to the model, B is the product of cellular respiration in the mitochondrion used by photosynthesis while D is the product of photosynthesis in the chloroplast used by cellular respiration. B is likely water (H2O) while D is likely oxygen based on the provided options.
Answer: False
Explanation:
The above statement is false as, cerebellum receives the projection fibers from the other sensory system in which they are received in the different part of cerebellum. As, the cerebellum received the information from the sensory system and the spinal cords and also in the other part of the brain as it regulates in the movement of the motor.
