One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam.

A. true

B. False

What is the significance of secreting inactive pepsinogen from the mucosal cells instead of pepsin?

Some heterozygous alleles create variations in expression so that there is not a clear dominant or recessive allele true or false?

What are enzymes made from? O A. Nucleic acids O B. Amino acids O C. Fatty acids D. Monosaccharides

What are macromolecules? Marco=

Proteins bind selectively to small-molecule targets called ligands. the selection of one ligand out of a mixture of possible ligands depends on the number of weak, noncovalent interactions in the protein's ligand-binding site.

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.