Ponds, lakes, streams and rivers are all part of what kind of ecosystems?

a. ocean

b. marine

c. estuaries

d. freshwater

A soybean plant uses cellular respiration to generate usable chemical energy. This is released within the cell as molecules of which substance?

Carbohydrates, lipids, proteins (levels of organization), and nucleic acids. what basic role (s) does each type of molecule play in a cell or a living organism?

The sides of the DNA molecule, the rails of the ladder, are composed of A. phosphates only. B. nitrogenous bases only. C. phosphates and sugars. D. nitrogenous bases and sugars.

Examples of skin receptors

A scientist has a pea plant with yellow seeds. It has one allele for yellow seeds (Y) and one for green seeds (y). Which describes the genotype of the pea plant? yellow seeds green seeds homozygous heterozygous

Complex chemical catalysts produced by living cells are enzymes.

A scientist is studying a gene known as the XYZ gene in eukaryotes. Into a eukaryotic cell, she inserts an miRNA that is complementary to a portion of the XYZ mRNA found in the cell. What result would you predict

A researcher is creating pedigrees for a trait he suspects to be dominant in humans. What are some of the likely features of his pedigrees for families with this trait? a. Only females will have this dominant trait. b.

Organism that causes red tide when present in large numbers

Ecosystems function independently and in isolation from each other. a. True b. False