Plant cells were formed by the destruction of fossils in rocks.
Non-living molecules were transformed into bacteria by chemical processes.
Reproducing molecules evolved into living molecules by biological processes.
Answer:
it is option d
Explanation:
Answer: Directional Selection.
Explanation:
This process can be defined as the positive selection in which one phenotype is selected over the other phenotype, causing the allele frequency to shift towards the other phenotype.
The allele favored by directional selection is advantageous. There is a increase in the rate of reproduction and chances of survival.
Here, the population of rabbits are decreasing in size over a period of time because they adapted the burrows to live in. Gradually small size of the rabbits were favored.
This is an example of directional selection.
Answer:
It means the way genes are expressed is the same in most organisms.
Explanation:
All living organisms use the same DNA or RNA as their genetic material. The manner in which the information in these genes are encoded or expressed is known as the GENETIC CODE. Genetic code comprises of all the codons that specifies amino acids in all living organisms. Only 20 amino acids in different sequential pattern makes up all proteins.
Nearly all living organisms use the same genetic code, as a codon does not specify a different amino acid in another organism. It is universal in all organisms that AUG codon specifies Methionine. Only slight differences to this pattern of genetic expression has been discovered, hence, the genetic code is said to be NEARLY UNIVERSAL.
The idea of a nearly universal genetic code refers to the common genetic 'language' shared by nearly all organisms. This means that, across an extraordinarily diverse array of species, the same sequences of DNA and RNA (the genetic code) translate to the same amino acids, which, in turn, build the same proteins. The universality of this code strongly suggests that all life shares a common origin.
The nearly universal genetic code refers to the fact that virtually all living organisms use the same codons, or sequences of DNA and RNA, to code for specific amino acids, which are the building blocks of proteins. This conservation of codons is seen across a vast array of species, with minor exceptions. For instance, if the mRNA encoding the globin protein in horses is transferred to a tulip cell, the tulip would synthesize the same protein, suggesting a common origin of all life on Earth.
The 64 possible combinations of triplet codons coding for 20 amino acids and with the occurrence of only one genetic code demonstrates the idea of degeneracy in the genetic code. This means that more than one codon can specify the same amino acid. For instance, unusual amino acids such as selenocysteine and pyrrolysine have been found in archaea and bacteria, which use unique codons.
Ultimately, the universality and degeneracy of the genetic code highlight the homologous characteristic shared by all species suggesting they share a common ancestor. This is powerful evidence for the shared biochemistry in all forms of life.
#SPJ11
b. includes nucleic acids.
c. could only be made of triglycerides.
d. could only be made of carbohydrates.
e. does not include proteins or nucleic acids.
Answer:
d
Explanation:
The correct answer would be that the food could only be made of carbohydrates.
Proteins contain other elements such as nitrogen and sulfur in addition to carbon, hydrogen, and oxygen while nucleic acids and triglycerides contain phosphorus in addition to carbon, hydrogen, and oxygen.
The only chemical substance that contains carbon, oxygen and hydrogen is carbohydrates.
Correct option: d
The 'wonder food' contains only carbon, hydrogen, and oxygen, so it could only be made of carbohydrates. The correct answer is option d.
Based on the information given that the 'wonder food' contains only carbon (C), oxygen (O), and hydrogen (H), the most probably statement would be that 'it could only be made of carbohydrates'.
Carbohydrates are biologically important molecules composed of these three elements. They provide energy for the body and are crucial in numerous biological processes.
However, whereas proteins contain nitrogen and nucleic acids which have both nitrogen and phosphorus, this 'wonder food' does not appear to contain those elements, which rules out the presence of proteins and nucleic acids.
That said, without more specific information, it's also possible that it could contain triglycerides or other compounds like fats or oils, which also contain carbon, oxygen, and hydrogen. So while it's not certain, the best answer probably is 'it could only be made of carbohydrates' (option d).
#SPJ3