Most plants have roots, but there are some
exceptions. The exceptions are bryophytes
and the groups of green algae that are
classified as plants. Bryophytes have rootlike
structures called rhizoids for absorbing
water, but because rhizoids lack vascular
tissue they are not considered roots.
Answer: Hydrogen bonds are created between the base pairs in DNA. Adenine pairs with thymine and cytosine pairs with guanine. Adenine and thymine create 2 hydrogen bonds while cytosine and guanine create 3. These bonds are fairly weak so that they can be broken when DNA is replicated (by an enzyme called helicase which unwinds DNA). However despite them being weak they do stabilize DNA's double helix structure as well.
Answer:
Peptidic bond (proteins), glycosidic bond (carbohydrates) and lipid bond (lipids)
Explanation:
1. Peptidic bond: this type of bond is exclusive for the aminoacids. These monomers create bonds between the carboxylic acid of first and the amino grupo of second (like a acid-base reaction). We have notice, some aminoacids monomers have groups acid or amino into the primary ramification, it groups cannot react to form peptidic bons.
2. Glycosidic bond: principally, this bond is form between the carbon alpha of one monomer (monosaccharide) and one hidroxyle group (-OH) of other monomer. The number of the cabron that has the -OH grupo will bring the name to the bond, for example, "glucose 1-4 fructose". Also, we have a direction of the bond before the firs number, alpha or beta, it depends on the geometry of the monomer.
3. Lipidic bond: usually, it bond type is a coballent and create an anphipathic zone, this is why some lipis are not soluble in water
Nitrogen oxygen and carbon dioxide
