Answer: cell membrane
such as water, micro-organism
physical process
simple diffusion, osmosis and filtration
such as potasssium permaganate in water,urea a liver waste diffuses from the body and the kidney help in filtering it out
physiological processs
active transport, phagocytosis and pinocytosis
such as soduim-potassium pump, exocytosis
Explanation: transportation in and out of cell is done in different ways listed above but a barrier to this movement is the cell membrane which is an outer covering of the cell. it protect the cell and only some materials can penetrate the cell membrane e.g micro-organism, water e.t.c. the various physical and physiological processes are the various ways substance cna be liquid, solid or gas are transported within or outside the cell e.g food
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Answer:
Diabetes is the cause of malfunctioning of pancrease.
Reason:
Pancrease secrete two types of hormones, i.e. Insulin and glucagon that regulate the level of glucose in blood. If the cells of pancrease unable to produce insulin the level of sugar in blood rises and lead to diabetes.
The nucleus contains the DNA and acts like a control center of the cell.
<h2>Answer:</h2>
The correct options are A,D and E which are plant trees, irrigate dry field and remove dead leaves respectively.
<h3>Explanation:</h3>
- Wind erosion is the creation of big dust storm by small air rolls containing small particles like tillage and small dust particles.
- Plant trees stops the formation of the small air rolls y providing physical resistance.
- Remove dead leaves stops the tillage to contribute in dust storm.
- Irrigate dry field decreases dust in air.
