A number of studies are carried out in order to verify if there is a relation between the death rate by cardiac diseases and the cholesterol level in the blood The results are shown in the adjacent document

1 - Pose the problem at the origin of
this study.
2- Formulate the hypothesis tested in this study
3 What do you conclude concerning the formulated hypothesis?
4 - Explain the relation between the
level of blood cholesterol and the risk of cardiac accidents.

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Four types of motile cells in human body?

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.

Yeast cells reproduce quickly by budding. this is a form of reproduction so all the yeast cells a) sexual; vary b) asexual; vary c) asexual; are identical d) sexual; differ from the parents submit hint structures and functions of cells cellular reproduction