Answer:
The crab has just molted and the new exoskeleton has not yet hardened.
Explanation:
Crabs have an exoskeleton or shell which protects and supports them. From time to time crabs molt i.e. they discard the old exoskeleton and begin forming a new one. This process is a part of their normal growth. Soft-shell crabs had recently undergone molting and the new shell had just started to form. Hence, it has not hardened completely and is comparatively soft. Soft-shell crabs are in popular demand because it is easier to remove the soft shell and access the meat as compared to the normal crab.
Answer:
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Answer:
The correct answer is (1) using organs cloned from the cells of the patient
Explanation:
Organ Cloning is a method to solve the failures/rejection in organ transplants. It consists of the creation of human embryonic stem cells in order to use them as raw material for different medical therapies. These can be used to produce a large number of different cells, including: tissues, muscles and organic cells. The main research in human organ cloning is aimed at achieving healthy tissues that can be transplanted in people without immunological rejection.
The cell membrane is selectively permeable, allowing only certain substances to pass through. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. The three main kinds of passive transport are diffusion, osmosis, and facilitated diffusion.