Under what circumstances does membrane transport always require energy?

While using a microscope to examine the cell of an unknown organism, you see that the cell has a nucleus, a cell wall, ribosomes and mitochondria. what kind of organism do you think this cell belongs to?

In which stage of meiosis do homologous chromosomes separate?

What two types of food would you except to be available on the Galapagos island

A student in your physiology lab is thirsty and decides to sneak a drink of deionized or distilled water. the student drinks a fairly large quantity of this water in a short period of time. what will happen to the student's cells?

Name few pests which damage the crop.

What is the polymer of lipids

Suppose you look at a microscope to look at a cell from leaf of a tree. What structure will you see that would not be found in a cell from you finger nail. A) cilia B) mitochondria C) ribosomes D) chloroplasts

Write the equation for photosynthesis using both words and the chemical symbols

Which change shows a tenfold increase in concentration of H + ions?

Which valve prevents backflow into the right atrium?