Answer:
(D) They are all acids
Explanation:
Amino acids are monomers, fatty acids are polymers and they do not contain nitrogen. All four are acidic in nature for different reasons:
- Amino acids due to acidic carboxyl group -COOH.
- Fatty acids due to end chain acidic carboxyl group -COOH.
- Nucleotides because they have phosphate groups (which are acidic in nature).
- Monosaccharides due to presence of aldehyde group -CHO (which can oxidise to -COOH).
Answer:
The rungs of the ladder are formed by complementary pairs of nitrogen bases — A always paired with T and G always paired with C.
Explanation:
The correct answer is C. "when Henry ask "what is different with this plant that does not grow very well compared with the other house plants?" "
Answer: observe the feeding behaviors of gulls
Answer:
Most human cells are diploid, and only the gametes (i.e., the sperm and egg cells) are haploid. Haploid cells contain half the number of chromosomes as diploid cells. A human diploid cell contains a total of 46 chromosomes (2n = 46), so a haploid cell will contain 23 chromosomes (n = 23).