1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hodyreva [135]
2 years ago
13

Which description best explains Watson and Crick's DNA model? DNA is a single–stranded molecule that has nitrogenous bases towar

d its exterior. DNA is a double helix made of two strands linked together with hydrogen bonds. DNA is a double helix that contains nitrogenous bases toward its exterior.
Biology
1 answer:
inysia [295]2 years ago
6 0
<span>The discoverers of DNA were not James D Watson and Francis Crick. They are the first scientist to formulate an accurate description of the DNA’s (deoxyribonucleic acid) complex , double-helical structure. They discovered that base pairing nucleotides must be; adenine and thymine; and cytosine and guanine. These base pairs are held together by a hydrogen bond, atype of chemical reaction that s easy to break and easy to reform. The statement is “DNA is a double helix made of two strands linked together with hydrogen bonds.”</span>
You might be interested in
a scientist has discovered a new plant species in the amazon rainforest. she tells her fellow scientists that the plant she has
snow_lady [41]

planets can be different from angiosperm it can be one of the many things it has.

6 0
3 years ago
Which structure has the active sites where the heads of the thick filaments will bind?
Gre4nikov [31]
THE ACTIN has the active site to which the heads of the thick filament will bind.
The muscle is made up of two major protein fibers, which are the actin and the myosin. Muscle contractions occur when myosin and actin slide over each other in a series of repetitive events. The protein actin has a thin structure and is abundant in eukaryotic cells while myosin is a thick filament.
7 0
2 years ago
which of the following statements best describes the process that by which the new claw is regenerated?
maks197457 [2]

could you please add the statements?

3 0
3 years ago
Which part of a molecule does which part of a molecule dose sunlight 'excite'?
Harrizon [31]
D. None of the above
7 0
3 years ago
Explain how both the digestive system and the urinary system work to conserve water in the human body.
Ghella [55]
Everything that we eat and drink contains some percentage of water. So, to start, you have to know that the human body has receptors which estimate if we have enough water in our blood and cells in general. From these receptors, the information travels through the neurons to the part of the brain that is responsible for activation of different responses. 

The digestive system is important because in its lower parts, liquids are absorbed and inserted in the bloodstream. Then through the bloodstream, they travel to all parts of the body and are absorbed by cells as needed. When blood passes through the body, it gets to the kidneys where water and electrolytes are filtered, reabsorbed if needed and excreted through the urine. 

Now, if the brain has a signal that the body has a lack of liquids, it activates hormones which influence the bloodstream in both the digestive and the urinary system. In this case, the digestive system will absorb more liquids from food because the hormones will make the blood vessels in the digestive area larger, and on the other hand, we will produce less urine because the kidneys will get an assignment from the brain to filter liquids, but to reabsorb them again as much as possible. 
3 0
2 years ago
Read 2 more answers
Other questions:
  • The level of __________ in the blood is the secondary stimulus for respiration
    7·1 answer
  • Which part of the sperm cell contains mitochondria necessary to power its trip through the reproductive system?
    13·2 answers
  • Science is an ongoing process that involves
    13·1 answer
  • Which of the following statements regarding Entner-Doudoroff pathway is true?
    6·1 answer
  • A short mRNA sequence is shown in the box below. Determine the DNA sequence from which this mRNA sequence was transcribed.
    11·2 answers
  • How would a good web be affected if a species disappeared from an ecosystem.
    11·1 answer
  • Which one is the true answer
    13·1 answer
  • BIOLOGY Biolgy Biology biology bology BiOlOgY BIOLOGY Biolgy Biology biology bology BiOlOgY BIOLOGY Biolgy Biology biology bolog
    11·2 answers
  • What do you think are the possible alleles for eye color in humans?
    12·1 answer
  • A specific species of fish have 60 chromosomes. How many chromosomes would you expect in this fish's sex cells?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!