Low-density lipoproteins (LDL) are the principal transport vehicle for cholesterol in the blood.
The body needs cholesterol, a waxy, fatty molecule, in the proper proportions for overall health. High blood cholesterol is a disorder that can result from unfavorable cholesterol levels. Low-density lipoprotein (LDL), also known as "bad" cholesterol, is the type of lipoprotein that carries cholesterol in your blood.
Cholesterol is primarily brought on by consuming fatty foods, failing to exercise regularly, being overweight, smoking, and using alcohol. Moreover, it can run in families. By consuming a healthy diet and increasing your physical activity, you can lower your cholesterol. Some folks also require medication. The majority of the cholesterol in your body is LDL (low-density lipoprotein), also referred to as "bad" cholesterol. Your risk of heart disease and stroke increases if your LDL cholesterol levels are high.
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Answer;
The substance that can enter a cell by diffusion without having to be digested is water.
Explanation;
Diffusion involves the movement of molecules from a region of high concentration to a region of low concentration, down a concentration gradient.
Water is able to diffuse through the cell membrane without being digested since it has small molecules.
One property of cell membrane is semi-permeability; it selectively allows material to enter or leave the cell. Large molecules such as starch , fat and proteins, can not enter the cell due to their size and will need to be digested to small molecules for the to gain access to the cell.
Answer: The correct answer is- Intraspecific competition.
Intraspecific competition can be described as an interaction in a population where members belonging to the same species compete for a limited resource ( such as food, water).
As per the information given in the question, both organisms ( grizzly bears) belong to the same species and competing for fish, which is food for them.
Thus, it is an example of Intraspecific competition.
Answer:
Consuming tuna from a dented, bulging can. (Ans. C)
Explanation:
Botulism is a rare poison, and caused by a toxin which is known as clostridium botulinum. Botulinum requires emergency medical care because sometimes it can be fatal. It can spread through contaminated water, food, and by touching the surface area which is contaminated.
Symptoms of botulism includes:
1) Difficulties in speaking, and facial weakness.
2) Pain in the abdomen area.
3) Weak eye muscles.
4) Feeling dizziness.
5) Double vision or blurred vision.
