Answer: Definition of Selectively Permeable Membranes. All cells are enclosed with a cell membrane. A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it by means of active or passive transport.
A) 5
Half-life is the time it will take for a quantity to reduce to half its initial value. In this case, uranium will undergo radioactive decay, and after 700 mil years, 5 of the 10 uranium atoms will have decayed.
Answer:
In biotechnology, the recombinant DNA technologies have shown to be very useful to produce genetic combinations capable of improving a specific trait. In consequence, these technologies have important applications in different fields ranging from agricultural biotechnology to medicine and industry.
- Respiration is the process in which animals and plants take oxygen from the atmosphere.
-Excretion is the process in which living beings get rid of waste products.
-Locomotion involves any form of movement made by living beings.
-Photosynthesis is the process in which plants use water, sunlight, and carbon dioxide to create oxygen and energy.
The correct answer is Photosynthesis
When a plant is left in dark for several hours, it does not get sunlight. Isn't it?
When a plant does not get sunlight, it cannot prepare food for itself , i.e, photosynthesis does not take place. When it does not prepare food in the form of starch, it will test negative for it.
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