Cell Biology Answers

How do the following features improve the efficiency of photosynthesis?

A. the presence of accessory pigments

B. the organization of pigments in a photosystem

Why is ATP called the energy currency of life?

Many of the enzymes involved in photosynthesis aid in chemical reactions that remove electrons from the oxygen atoms in water and transfer these electrons to the carbon atoms in carbon dioxide. In these reactions, which is the reducing agent and which is the oxidizing agent?

Why is the reduced substance called the oxidizing agent?

In space, what can be used to make an analogy with the lysosome 

Outline and explain the normal functions of phosphatidylinositols in the body.

Describe how the antigen presenting cell (APC) pathway can be used to selectively target cancer cells.

Please outline the components of an ideal multifunctional liposome and discuss the role of each component. Give an example of an FDA approved Liposome based system for delivery of Doxorubicin.

When living pancreatic cells were placed in a solution of a red stain called neutral red, the cytoplasm became red. The cells were then removed from the solution of neutral red The red stain in the cytoplasm moved into vesicles, which were exported from the cell, eventually leaving the cell colourless.

Which transport mechanisms could explain how the red stain entered and I

A active transport and facilitated diffusion

b diffusion and exocytosis

C facilitated diffusion and endocytosis

D osmosis and exocytosis

In general, what happens during an oxidation-reduction reaction between two molecules?