Answer:
D. groups organisms based on similarities related to their structure and evolution.
Explanation:
organisms are divided into 7 : domain - kingdom- phylum- class- order- family- genus- species, based on their structure and evolution.
Cytosine is one of the maine bases found in DNA and RNA along with adenine guanine and thymine (uracil in RNA) it is pyrimidine deravitive with nytrocyclico arotomic ring and two substitutes attached
At High growth rate population the supply of earth expected to be used up the soonest.
<u>Explanation</u>:
High growth of population leads to an exponential increase in the population numbers.
For example, the high growth in a family of 2 will lead to more 2 children and the cycle continues. There is growth in a geometric fashion in multiples of 2 like 2, 4, 8, 16, 32. This will lead to strain on the natural resources and lead to their depletion.
At high rate of population growth the natural resources of Earth are expected to be depleted the fastest.
Answer/Explanation:
Gene mutations are changes to the DNA sequence that arise by chance. These changes can cause the gene to have different functions. Usually, these functions are not beneficial - i.e. the mutation makes the gene work less efficiently or not at all.
However, on rare occasions, the altered gene function is advantageous, meaning it gives the organism a benefit for survival.
Mutations in the germ line are always passed on to the next generation, i.e. they are inherited. But if a mutation gives a selective advantage by helping survival, then that organism is more likely to survive to reproductive age and pass the mutation on.
The inheritance of this mutation and the selective pressures acting upon it are the driving forces of evolution.
The accumulation of mutations and the pressures of natural selection can affect different populations of the same species differently. For example, if one small population of birds migrates to an island with a different food source, then the selective pressures will be different than for their relatives on the mainland.
Over time, speciation will occur, and two new species will form. While they have a common ancestor, they are no longer the same species as evolution has caused them to diversify.
Answer:
Active transport.
Explanation:
To move substances or ions against a concentration or electrochemical gradient, the cell must utilize energy which is in the form of ATP during active transport.
Primary active transport, which is directly dependent on ATP, moves ions across a membrane and creates a difference in charge across that membrane.