The plantae kingdom has an overwhelming majority of the producers, this may not be true. The producers are mostly present as autotrophs that make food using the sunlight. Other kingdoms like the bacteria have varied forms of producer, both the autotrophs like the cyanobacteria and the chemotrophs like halothiobacillus that use the internal heat of the Earth at the bottom of the dark ocean floor to synthesise their food.
Answer:
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
Active repressor , Active activator.
Active repressor, Inactive activator.
Inactive repressor, Active activator.
Inactive repressor, Inactive activator.
Explanation:
Use the attached diagram for
explanations on the four combinations of active or inactive regulatory proteins in cells.
The spines of the cactus have several functions, which are the following:
To defend them from possible predators: inside the body of the plants there is a great deal of water; if herbivores could access it, these plants would not survive.
To provide them with shade: it is true that not much, but it is enough so that the loss of water by evaporation is minimal.
Reflect sunlight: many species have white spines.
The answer is ‘arteries are less flexible’. This is why the older you get the more predisposed you
are to cardiovascular diseases such as high blood
pressure. However, regular
exercise may delay this development. The barometers in the blood vessels also
become less sensitive hence these vessels become less responsive to blood
pressure changes.
Answer:
All animals are eukaryotic, multicellular organisms, and most animals have complex tissue structure with differentiated and specialized tissue. Animals are heterotrophs; they must consume living or dead organisms since they cannot synthesize their own food and can be carnivores, herbivores, omnivores, or parasites.
Explanation:
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