B. nucleic acids.
C. starches.
D. protein.
Answer: A. lipids.
Explanation:
Cutin: This is a long-chain fatty acid polymer, that enters the spaces between the cellulose microfibrils of the epidermal cell wall, making her cutinized. It is later deposited externally and together with the wax forms the cuticle. The cuticle helps to restrict sweating; being bright helps to reflect the excess of solar radiation and being a substance that is not digested by living beings, it also acts as a layer, protecting against the action of fungi and bacteria. Cuticle formation begins in the early stage of organ growth.
Answer:
B. to cut DNA into fragments of different lengths
(on e2020)
just got a 100%
Answer:
C. When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.
Explanation:
Darwin suggested natural selection as the mechanism that explained the evolution of species. This idea states that a population of individuals living in a certain environment is adapted to thrive in it. However, if there is a change in the environment, individuals must adapt in order to survive, otherwise they will die. Only a handful of individuals which had a particular (and random) variation before the change of the envirnonment will be able to adapt and survive. If the variation is heritable, the next generation will have that same trait and will be able to thrive in the new environment.
In the answer C., a population of bacteria is composed of some individuals which are susceptible to the antibiotic and some individuals that are resistand because they possess a mutation in their DNA that allows them to survive an environment with antibiotics. If no antibiotic is present, then both types of bacteria can survive. However, if they are exposed to the antibiotic, the previously resistant bacteria are the only ones that will be able to survive and reproduce.
They move in a more circular pattern.
They move faster.
They move more randomly.
B. Conducts heat readily
C. Reacts with bases to produce salts
D. Becomes negative when combined with other elements