It is necessary for the immune system to clearly distinguish foreign cells and proteins from those made by the body.

(a) Explain why this is the case:

(b) Name the type of disorder that results when this recognition system fails:

What are two factors that increase population size and two factors that decrease populations size

How does chemical weathering differ from mechanical wheathering

Difference between setae and chaetae

You are observing an unknown organism under the microscope. By careful observation you have found that the organism is unicellular and prokaryotic in nature.

How could a pregnant woman determine whether her child could be born with albinism

How many genes influence a polygenetic trait? A: one gene B: more than one gene C: zero genes, just the environment D: one gene with multiple alleles

Scientists were. about whether dolphins could be used as therapy animals

Which is the order of airflow during inhalation? nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli nasal cavity,

The methylation state of DNA is sensed by proteins involved in which of the following processes? A. DNA replication B. transcription C. DNA repair D. translation

An objects location is known as?