the A band stays the same length because it is the length of the myosin filaments, and all the myosin does it sit there while actin slides past it.
Yes, homologous chromosomes are similar in length and have the same type of genes in the same locations.
No. Adults generally have the same or similar proportions, but different heights. Therefore, their backbones are different lengths, just as their arms and legs are different lengths.
I am not sure, but in Buddhist tradition, one of the 23 marks of a great man was that he should have toes of the same length. This supposedly meant that the legs were very strong. But I doubt it though. Even the strongest runners who have really fit legs don't have toes of the same length.. So, yeah, just FYI.
Yes, the two individuals share bands of the same length because they have similar genetic profiles. This can occur due to a common ancestor or genetic mutation that resulted in the same banding pattern.
Homologous chromosomes are chromosomes that have the same length and carry genes for the same traits. One homologous chromosome is inherited from each parent. During meiosis, homologous chromosomes pair up, allowing for genetic material to be exchanged between them.
During contraction, the H zone and I band shorten while the A band remains the same length. The A band is the dark band in the sarcomere that contains the thick filaments, the I band is the light band composed of thin filaments, and the H zone is the area in the center of the sarcomere where only thick filaments are present.
According to the sliding filament theory, during muscle contraction, the sarcomere shortens as the actin filaments slide over the myosin filaments. The I band decreases in length, while the A band remains the same. The H zone, which is the region of the A band where there is no overlap between actin and myosin, also shortens. Overall, this process increases the overlap between the actin and myosin filaments, leading to contraction.
The A band is a region in a sarcomere that contains thick myosin filaments. It remains the same length during muscle contraction as it corresponds to the length of the myosin filaments. The A band also contains some overlapping thin actin filaments.
When the sarcomere contracts, the I band becomes smaller. The I band is the region that contains only thin filaments (actin), and during contraction, the thin filaments slide past the thick filaments (myosin), causing this band to shorten. The A band, which contains both thick and thin filaments, remains the same length during contraction.
When sarcomeres shorten during muscle contraction, the I band and H zone both decrease in length. The I band, which contains only thin filaments, shortens as the thick filaments slide past them. The H zone, which is the area of the A band that contains only thick filaments, also diminishes as the thick filaments overlap more with the thin filaments. Overall, the A band remains the same length, while the I band and H zone decrease.
sarcomere and sarcolemma are two different things. a sarcomere is between two d zisks of a myofiber (muscle fiber). a sarcolemma is a plasma membrane. there are many sections of sarcomere under the layer of sarcolemma.
None actually shorten. The thin and thick filaments that compose sarcomeres do not shorten; instead, they slide past one another, causing the sarcomere to shorten while the filaments remain the same length.
you put much more water
Isometric muscle contractions happen when the muscle stays the same length, concentric contractions occur when the muscle shortens, and eccentric contractions occur when the muscle lengthens.
M line
Muscles contract when sarcomeres shorten. The thin and thick filaments that compose sarcomeres do not shorten; instead, they slide past one another, causing the sarcomere to shorten while the filaments remain the same length.
They are the same.