Answer:
The correct answer will be option A - A-band.
Explanation:
The sarcomere is the repeating unit of a myofibril which extends between two z-lines. Under a microscope, a sarcomere can be divided into A- band which is composed of thick myosin only and I-band which consists of thin filament that is actin only.
When a muscle contract then actin and myosin comes in overlapping position due to which I-band shortens and between two z-lines and overlapped structure of thin actin filaments over thick myosin filaments (A-band) is seen.
Therefore, only A-band is seen between two z-lines in a contracted muscle thus, option A is the correct answer.
Answer: Mutations in the GALT, GALK1, and GALE genes cause galactosemia.
Explanation: Galactosemia is a disorder that affects how the body processes a simple sugar called galactose. A small amount of galactose is present in many foods. It is primarily part of a larger sugar called lactose, which is found in all dairy products and many baby formulas. The signs and symptoms of galactosemia result from an inability to use galactose to produce energy.Classic galactosemia, also known as type I, is the most common and most severe form of the condition. If infants with classic galactosemia are not treated promptly with a low-galactose diet, life-threatening complications appear within a few days after birth. Affected infants typically develop feeding difficulties, a lack of energy (lethargy), a failure to gain weight and grow as expected (failure to thrive), yellowing of the skin and whites of the eyes (jaundice), liver damage, and abnormal bleeding. Other serious complications of this condition can include overwhelming bacterial infections (sepsis) and shock. Affected children are also at increased risk of delayed development, clouding of the lens of the eye (cataract), speech difficulties, and intellectual disability. Females with classic galactosemia may develop reproductive problems caused by an early loss of function of the ovaries (premature ovarian insufficiency). Galactosemia type II (also called galactokinase deficiency) and type III (also called galactose epimerase deficiency) cause different patterns of signs and symptoms. Galactosemia type II causes fewer medical problems than the classic type. Affected infants develop cataracts but otherwise experience few long-term complications. The signs and symptoms of galactosemia type III vary from mild to severe and can include cataracts, delayed growth and development, intellectual disability, liver disease, and kidney problems.
Explanation:
Most of the benefits of exercise and activity diminish within two weeks of substantially decreased physical activity
Glomerulus
The high fluid pressure inside the arteries causes the glomerulosa (capillary bed) in the glomerular capsule to produce filtrate.)
<h3>What is Glomerulus ?</h3>
Blood enters the glomerulus, a collection of small blood veins, as it enters each nephron. Smaller molecules, wastes, and fluid—mostly water—can pass through the glomerulus' thin walls and into the tubule.
- Proteins and blood cells, which are larger molecules, remain in the blood vessel.
- The glomerulus' primary job is to filter plasma to create glomerular filtrate, which travels the full length of the nephron tubule before converting to urine. Water, glucose, salts, and urea are all components of the glomerular filtrate.
Learn more about Glomerulus here:
brainly.com/question/7175191
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Im pretty sure it can either be E or B
