<span>Agar
is known to be a gelatinous polymer substance that was commonly used in the
laboratory setting as a substrate. Thus, nutrients agar can grow different types
of microbes such as fungi and bacteria while MacConkey agar is made with bile
salts and crystal violets, these additives cause the agar to only grow Gram –
negative bacteria. However, nutrients agars grow more organisms because it
contains nutrients from either beef broth or yeast extracts when compared with MacConkey
agar.</span>
Answer:
Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by: mutation
Explanation:
Answer:
genetic information, energy, soil
Explanation:
Germination is the term used to describe the set of steps that allow the development of an embryo within the seed of the plant. The development of this ambrion will result in the emergence of a seedling that will develop and form a very important plant for the ecosystem. In short, germination is the process of transforming the seed into a new plant.
In order for this to occur, the seed needs some factors that degrade its entire development. These factors are genetic information, energy and soil
Answer:
Viruses and Bacteria
Explanation:
Bacteria are single-celled, prokaryotic microorganisms that exist in abundance in both living hosts and in all areas of the planet. By their nature, they can be either "good" or "bad" for the health of plants, humans, and other animals that come into contact with them. A virus is acellular (has no cell structure) and requires a living host to survive; it causes illness in its host, which causes an immune response. Bacteria are alive, while scientists are not yet sure if viruses are living or nonliving; in general, they are considered to be nonliving.
Infections caused by harmful bacteria can almost always be cured with antibiotics. While some viruses can be vaccinated against, most, such as HIV and the viruses which cause the common cold, are incurable, even if their symptoms can be treated, meaning the living host must have a strong enough immune system to survive the infection.
Internal environment and its relation with inside cell
<u>Explanation:</u>
- Internal environment of an organism is water-based where the body cells exist.
- The fluid known as tissue fluid washes the body cells.
- Oxygen and nutrients are carried to the cells from Internal Transport system of the body.
- Interstitial fluid is found in between the spaces of cell. It comes out from the substances that flow out from the blood capillaries. Oldertissue fluid is replaced by new fluid where older flood drains towards lymph vessels.