BIOLOGY HIGH SCHOOL

Which RNA base pairs with the adenine in DNA?

Answers

Answer 1
Answer:

In DNA, adenine base pairs with thymine. In RNA, adenine pairs with uracil.

DNA Base Pairing:

  • In DNA, there are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G).
  • Adenine (A) always pairs with thymine (T), forming an A-T base pair.
  • Cytosine (C) always pairs with guanine (G), forming a C-G base pair.
  • These complementary base pairs are essential for maintaining the double-stranded structure of the DNA molecule. The hydrogen bonds between the base pairs hold the two strands of DNA together.

RNA Base Pairing:

  • In RNA, there are also four nitrogenous bases: adenine (A), uracil (U), cytosine (C), and guanine (G).
  • Adenine (A) in RNA pairs with uracil (U), forming an A-U base pair.
  • Cytosine (C) in RNA still pairs with guanine (G), forming a C-G base pair.
  • Unlike DNA, RNA is typically single-stranded, but it can form temporary secondary structures due to base pairing.

Role in Transcription:

  • During the process of transcription, a segment of DNA is used as a template to synthesize a complementary RNA molecule.
  • When RNA polymerase reads the DNA template, it selects ribonucleotides (A, U, C, and G) that are complementary to the DNA template strand.
  • Adenine (A) in DNA is transcribed into uracil (U) in RNA, thymine (T) in DNA is transcribed into adenine (A) in RNA, and the other base pairs remain the same (C-G and G-C).
  • This complementary base pairing is fundamental to the flow of genetic information from DNA to RNA and is a key concept in molecular biology and genetics.

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Answer 2
Answer:

Answer:

D. uracil

Explanation:

just took the test

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State why most biologists consider rna to be lifes first coding system

Answers

Because RNA( Ribosominal Nucleic Acid) converts into DNA, also meaning RNA codes for DNA.

when salt is used to preserve food , the food is___________A . cooled B . coated C.canned Do dehydrated​

Answers

Answer:

D-Dehydrated

Explanation:

Salt draws all the water and moisture put of a food making it dehydrated

Which term best describes the Mesozoic era? A.
The Age of Mammals

B.
The Age of Single-Celled Organisms

C.
The Age of Flowering Plants

D.The Age of Reptiles

Answers

the Mesozoic era was the age of reptiles 

Bacterium bacillus anthracite which causes anthrax has been developed as a biological warfare agent.which ability could have led to this?

Answers

its ability to form endospores in harsh conditions

Why do both plants and solar panels provide renewable energy?

Answers

Both plants and solar panels provide renewable energy because their energy source will not be depleted throughout the human lifespans even if we continously used it ( unlike fossil energy that only have a really limited amount left)

How did the discovery of the rhesus factor affect society? A. More patients died from having a transfusion with the wrong rhesus factor. B. New treatments during pregnancy could prevent harm to the developing child. C. Less donated blood could be used in the treatment of patients. D. The number of blood types was reduced by half.

Answers

Rhesus (Rh) factor is an inherited protein found on the surface of red blood cells.The Rh factor can cause problems if you are Rh negative and your fetus is Rh positive. The sentence that is associated here is B. New treatmentsduring pregnancy could prevent harm to the developing child.

New treatments during pregnancy could prevent harm to the developing child. Thus, option "B" is correct.

What is the rhesus factor?

The rhesus factor is an antigen present in the blood of humans and other primates, this is very important because the RH factors are uncompatible between them causing that for example is someone is RH positive and receives a tranfussion of RH negative it can cause its blood to coagulate in minutes, leading to death, so the discovery of the RH factor allowed to have safer trnasfussions of blood, and to help pregnant woman that had different RH factors than her babies to be treated in order to not harm the baby with their blood.

Thus, option "B" is correct.

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