Answer:
False
Explanation:
Myocardium's oxygen and nutrients are provided by coronary arteries. Coronary arteries are outside the heart and they wrap the whole heart to provide oxygen and nutrients.
Heart needs the continuous oxygen and nutrient supply for proper functioning like any other tissue of body. Any problem in coronary artery will lead to heart problem such as myocardial infarction.
The blood present inside the heart chambers does not provide any oxygen or nutrients to heart.
Answer:
Explanation:
Heterochromatin in terms of accessible of the cell's machinery is termed as the region whereby the nucleosomes are tightly packed toghether such that the cell's transcriptional machinery is unable to access this regions. Examples of regions where this is found is at the centromeres, the telomeres and some other few regions in the chromosomes.
Euchromatin in terms of accessibility is the region wherein the nucleosomes are loosely packed such that the cellular processes machines is able to get access to the DNA.
The cell makes DNA in highly compatible state accessible by understood some epigenetic mechanisms such as modification of the histone tails. An example is acetylation; this allows addition of an acetyl group to specific regions on the tail of particular histones that allows for the unwrapping of the history from the DNA making them accessible. This is carried out by some enzymes known as histone acetyltransferases (HATs). Another example is phosphorylation: this does the same as acetylation.
Answer:
B)
Explanation:
In order for one thing to happen another must come first and in this case, in order for secondary succession to happen the land must first go through primary succession and then be killed off by a volcano or other things.
Hope this helped.
A brainliest is always appreciated.
Answer: the volume of oxygen increases
Explanation:
As light intensity increases which is the distance between the light and the plant the volume of oxygen or the rate of bubble production increases. This shows that the rate of photosynthesis increases with light intensity
Higher light intensity means more light called photons are heading to leaves as you increase from low light intensity to higher light intensity the rate of photosynthesis will increase because there is more light available