Xavier listed the steps involved when sponges take in food and oxygen. 1. Water is drawn in through pores and enters the central cavity. 2. Food is filtered and digested. 3. Water leaves through an opening at the top of the body. Which describes the missing step? Oxygen is removed from the water before step 3. Oxygen is removed from the water after step 3. Tentacles sting and paralyze prey after step 1. Tentacles sting and paralyze prey before step 1.

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

1) strawberry plants typically reproduce by making runners, which are miniature versions of themselves, that grow off of the roots and stems of the parent. this type of vegetative reproduction is known as a) pollination. b) fragmentation. c) binary fission. d) vegetative propogation.

Aresearcher designed an investigation to test what effect eating different types of food would have on blood insulin levels. she selected 10 male subjects who were all 25 years of age and in good health. the experiment took place over 3 days. at 8: 00 a. m. on each day, the subjects ate a meal consisting of only 1 type of food. they had their blood insulin levels measured after consuming the meal. on day 1 they ate a high fat diet, on day 2 they ate a high protein diet, and on day 3 they ate a high sugar diel what is the independent variable in this experiment? a the age of the subjects b the blood insulin level c the type of food consumed d the time of day the meal was consumed