The diagram shows part of a carbon compound. its hydrogen atoms are not shown. how many hydrogen atoms are needed to make up one molecule of the compound? *

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

What does natural resource management aim at ?

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.