Answer:
Producers are the source of energy in a food chain.
Explanation:
Producers, through the process of photosynthesis, make their own food. When a primary consumer eats the producer, they get the energy stored by the producer. When a secondary consumer eats the primary consumer, the energy is transferred again.
Chromosomes are thread-like structures present in the nucleus, which carries genetic information from one generation to another. They play a vital role in cell division, heredity, variation, mutation, repair and regeneration.
<span>Active transport is the movement of molecules across a cell membrane from a region of their lower concentration to a region of their higher concentration—in the direction against some gradient or other obstructing factor (often a concentration gradient).</span>
The transient condition that is being described above is
sports anemia. This occurs when an individual is into aerobic exercise that
will likely cause the individual to have his or her red blood cells to be
diluted in which happens because of the plasma volume of the individual has
been expanded.
The best answer is b - it is rigid.
The cell wall is defined as the rigid, outermost layer found in plants and also certain bacteria, algae and fungi. It is absent in animal cells.
The plant cell wall is made up cellulose which is a structural carbohydrate. The cell wall is rigid and thus offers structural support allowing plant such as trees to grow to great heights.
It also helps prevent water loss, helps protect against insects and pathogens and keeps the shape of the plant.
