Which organisms have roundworms as a common ancestor?

mollusks and flatworms

sponges and chordates

flatworms, sponges, and cnidarians

mollusks, echinoderms, chordates, and annelids

Mark this and return

What are three limitation when doing an experiment?

Why does it matter osmosis is put into a scab or nosebleed? where would that leave him?

Which type of selection tends to increase genetic variation? A. Which type of selection tends to increase genetic variation? B. Stabilizing selection Directional selection Disruptive selection

One way that mining for mineral resources damages land is by? A. adding greenhouse gases to the environment B. depleting the world's ozone C. causing salinization D. increasing soil erosion

Explain the importance of the water potential comcept in plant physiology

Transport protein that provides a tube-like opening in the plasma

What Eon do we happen to live in currently?

Assume a population is in Hardy-Weinberg equilibrium for the B gene, which has two alleles, B and b. In this population of 100,000 individuals, if the frequency of the b allele (q) is 4%, how many homozygous bb individuals would you expect to find

Which of the following happens at the conclusion of meiosis I? A) Homologous chromosomes are separated. B) The chromosome number per cell is conserved. C) Sister chromatids are separated. D) Four daughter cells are formed.

Which statement is true regarding active transport? Group of answer choices Substances do not require additional energy to move in and out of cells. Substances can only move into cells, not out of cells.