Which macromolecule is a main component in cellular membranes and imparts it’s hydrophilic and hydrophobic nature A. proteins
B. lipids
C. carbohydrates
D. water

Which blood cell spend most of their time in the lymphatic system?

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.