The bond formed between the sugar of one nucleotide and the phosphate of an adjacent nucleotide is a covalent bond. A covalent bond is the sharing of electrons between atoms. A covalent bond is stronger than a hydrogen bond (hydrogen bonds hold pairs of nucleotides together on opposite strands in DNA).
Answer:
1. Purines
2. States that DNA composition varies among species
3. Hydrogen Bond
4. Purines
<em>Answer to #2 is a little iffy </em>-- sorry
Explanation:
Pyrmidines have two rings
Purines have one ring
Complementary bases are connected by hydrogen bonds.
Answer:
water and oxygen
Explanation:
The model in the image depicts photosynthesis and cellular respiration processes. Photosynthesis involves the synthesis of glucose and oxygen from carbon dioxide and water while cellular respiration involves the production of carbon dioxide and water from glucose and oxygen. This means that both reactions are opposite of one another.
According to the model, B is the product of cellular respiration in the mitochondrion used by photosynthesis while D is the product of photosynthesis in the chloroplast used by cellular respiration. B is likely water (H2O) while D is likely oxygen based on the provided options.
