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
Viruses are not living organisms because they lack the ability to produce.
Answer:
2 Refraction, Transition/bouncing?
7. Opaque, absorbs
Explanation:
Alaska rocks, much more than the rest of the United States. The northernmost state, which happens to straddle the border of two tectonic plates, gets hit with a magnitude 7 earthquake almost every year
Science refers to the construction of knowledge by using the scientific method. This method is based on empirical evidence.
Science can be defined as the construction of knowledge (scientific knowledge) by using the scientific method.
The scientific method includes several sequential steps:
- Observation
- Ask questions
- Form a testable explanation (hypothesis)
- Test the hypothesis
- Collect results (empirical evidence)
- Draw conclusions
In the scientific method, empirical evidence can be used to support the working hypothesis.
Learn more about the scientific method here:
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