Barnacles are stuck to a whale. The barnacles benefit and the whale is unaffected. This is an example of communication commensalism parasitism mutualism

Which of the following statements is NOT a possible outcome of antigen-antibody reaction? A) clonal deletionB) activation of complementC) opsonizationD) ADCCE) agglutination

Summarize the steps of sexual reproduction and explain how in increases genetic diversity

Why do the heads of the phospholipids move to the inside and the outside of the cell and the tails move inwards towards each other?

Where do electrons come from during cellular respiration

Which of these organisms lacks nervous tissue? jellyfish. sponge. nematode. earthworm.

What is ameba and how does it move?

Using the Punnett squares, determine the possible blood types of the offspring and the ratio of phenotypes when: a) Father is type O, and mother is type AB. b) Father is type A, heterozygous, and mother is type B heterozygous.

Which term refers to the final stage in a forest's development

Most of the nitrogenous waste in the body is a result of: A. fat metabolism B. protein metabolism C. carbohydrate metabolism D. erythrocyte breakdown

How are arctic have different from hare that live in the arctic?