Answer:
d. nicotinamide adenine dinucleotide (NAD) and derivatives.
Explanation:
a. amino acids (such as cysteine and proline)
b. vitamins (such as riboflavin and thiamine)
c. Adenosine triphosphate
d. nicotinamide adenine dinucleotide (NAD) and derivatives.
<em>Growth factors of bacteria are compounds that are important for the growth of bacteria but which cannot be synthesized by the bacteria themselves. Without these compounds, the growth of bacteria would be limited or they will not even grow at all.</em>
These compounds which are usually organic in nature include purine and pyrimidine nucleotides, vitamins, amino acids, and hormone-like peptides.
From the options, only option d does not fall among the growth factors required by bacteria.
Hence, the correct option is d.
Parasites usually require a host organism to survive, as that host organism can provide them nutrients, protein, and the necessities to reproduce.
Answer:
B. generation of rich organic fertilizer.
Explanation:
Compost and fertilizers are different. There is a simple way to distinguish between compost and fertilizers. Compost feeds the soil, and fertilizer feeds the plants. Fertilizer adds to the soil for nutrient supplying purpose to the plants. But compost helps to increase the microbial activities of the soil, which improves the health of the soil.
Answer: Option A) healthy fish populations.
Explanation:
Wetlands include swamps and marsh. i.e areas of land covered with water.
Once, wetlands are destroyed by human activities there would be:
- a reduction in the population of plant and animal that rely on its native organisms due to starvation.
- increased frequency of floods since excess water can no longer be collected there
- pollution of nearby streams as rain will wash off materials into them
However, healthy fish populations does not happen since producers like plankton eaten by the fishes are also destroyed.
Thus, healthy fish populations is the unlikely outcome
Answer:
They contain symbiotic rhizobia bacteria within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants; this helps to fertilize the soil
