Explanation:
(3) In order to survive, all organisms must carry out enzyme-controlled reactions.
Natural selection is the primary process that drives Darwin's theory of evolution, the correct option is a.
Darwin's theory of evolution is primarily driven by the process of natural selection. Natural selection is the mechanism by which certain heritable traits become more or less common in a population over successive generations. It occurs due to the differential reproductive success of individuals with advantageous traits that are better suited to their environment. Individuals with beneficial traits are more likely to survive and reproduce, passing on their advantageous traits to their offspring.
Over time, this leads to the accumulation of favorable traits within a population, while less advantageous traits become less prevalent. Natural selection is driven by various factors, including environmental pressures, competition for resources, and adaptation to changing conditions. It is a key driving force behind the diversity and adaptation of species observed in the natural world, the correct option is a.
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The complete question is:
Which process drives Darwin’s theory of evolution?
a. Natural selection
b. Genetic drift
c. Lamarckism
d. Mutation
C. They help maintain ecological balance by preventing desertification. The seed is protected by The Ovaries.
applied
systems
A. a five carbon sugar, a nitrogenous base, and a phosphate group
B. a five carbon sugar, an amino acid, and a carboxyl group
a polysaccharide, an amino acid, and a phosphate group
C.
D.
a polysaccharide, a nitrogenous base, and a carboxyl group
DNA (deoxyribonucleic acid) is a molecule that contains the genetic instructions necessary for the growth, development, functioning, and reproduction of all living organisms. It is composed of smaller units called nucleotides, which are the basic building blocks of DNA.
The correct option is A .
The backbone of DNA is made up of a sugar-phosphate chain. The sugar component in DNA nucleotides is deoxyribose, which is a five-carbon sugar molecule. Deoxyribose is a key structural element in forming the backbone of the DNA strand. Each nucleotide contains one of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), or guanine (G). These nitrogenous bases are the "letters" of the genetic code and pair with each other in specific ways (A with T and C with G) to form the rungs of the DNA double helix.
Single nucleotide of DNA always contains a five-carbon sugar (deoxyribose), a nitrogenous base (adenine, thymine, cytosine, or guanine), and a phosphate group. These components come together to form the fundamental units of the DNA molecule, allowing it to carry and transmit genetic information.
Hence , A is the correct option
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Answer:
A
Explanation:
Awnser is A