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lakkis [162]
3 years ago
9

According to the ____________ theory of biological aging, dna in body cells is gradually damaged through spontaneous or external

ly caused mutations.
Biology
1 answer:
aliina [53]3 years ago
4 0

The Cross-Linkage Theory or also referred to as the glycosylation theory of aging was discovered or proposed by Johan Bjorksten in the 1940s. According to this theory, the aggregation of cross-linked proteins can damage cells and tissues this slowing down the bodily processes that eventually results to aging. In recent studies, cross-linking is associated with age-related changes in the studied proteins. Furthermore, this theory stresses out that the binding of glucose to proteins can cause various problems. Once the said binding occurs, the protein becomes impaired which leads to its performance inefficiency. Living a longer life would also mean increasing the possibility of oxygen-glucose meeting and protein. Some of the known cross-linking disorders include senile cataract and the appearance of tough, leathery, yellow skin.

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What are some facts about fertilization?
Shkiper50 [21]

Answer:

Internal Fertilization: Mammals,birds and reptiles in them the mode of fertilization is internal

External Fertilization: Amphibians and fishes used external fertilization.

Egg laying Animals;Birds,reptiles and some mammals platypus lays eggs.

Explanation:

Fertilization is a process in which a female egg (Ovum) and male egg (sperm) unite to form a zygote.A zygote is a fertilized egg which grows within an embryo.The process of fertilization is important in eukaryotes such as animals, humans,birds and plants. Fertilization divides a cell into many daughter cells by the process of mitosis and meiosis.It doubles the chromosome numbers.Fertilization are of two types internal and external.

8 0
3 years ago
How does wet and dry barometer work?? Thnx
tatiyna

Wet barometer - The tool works by measuring atmospheric pressure to predict incoming weather. Since the glass is only filled halfway with water, the other half is exposed to the atmosphere. When the outdoor atmospheric pressure rises, the pressure in the glass decreases, and causes the water to move down the spout.

Dry barometer - A Torricellian barometer (sometimes called a mercury barometer) is an inverted (upside-down) glass tube standing in a bath of mercury. Air pressure pushes down on the surface of the mercury, making some rise up the tube. The greater the air pressure, the higher the mercury rises.

I hope this helps!

6 0
3 years ago
What is an example of a specific nerve cell that leaves the cell cycle only temporarily? Why does it?
Advocard [28]
A  example of a nerve cell is a nerve cell

8 0
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Protein malnutrition can result in a moderate anemia. which of the below-listed vitamins would be most likely to be associated w
damaskus [11]
Anemia is a medical condition in which there is a decrease int the total amount of red blood cells in the blood and it always results in lowered ability of the blood to carry oxygen. Vitamin B12 is needed to make red blood cells and lack of Vitamin B12 can lead to aneamia. So, the vitamin that is most associated with aneamia condition is VITAMIN B12.
5 0
3 years ago
Which of the following carbon compounds provides an important building block for cell membranes?
svet-max [94.6K]
I believe its A.  Nucleic acids
4 0
3 years ago
Read 2 more answers
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