v9ens8tepheberrelF v9ens8tepheberrelF

01-03-2017
Biology

contestada

Which of the following provides a first line of defense against pathogens?

Respuesta :

Аноним Аноним

03-03-2017

The first line of defense against disease is intact skin and mucous membranes. If an antigen (pathogen) cannot enter the body, a secondary defense is unnecessary.

Answer Link

Otras preguntas

Which is composed of amino acids and determines all the structures and functions of organisms? DNA ribosome mRNA protein

Help on logarithmic equation

The DNA sequence TTG is changed to TCG and produces a new protein. Which type of mutation is this? a) missense b) nonsense c) silent d) frameshift

How are the types of energy in the electromagnetic spectrum defined? (Points : 3) by their atomic structure by their color by their amplitude by their wavelengt

Can someone please help me? :(

the equation of a line? passes through (-2,5) and is parallel to y-2/3x+1 would the answer be y=2/3x+19/3

which type of lava flows easily? a) silica-rich b) composite c) basaltic d) smooth

A case of grape fruit weighs 35 3/4 pounds. Of this weight, 1/8 is not ripe. What is the weight of the grapefruit that are ripe ?

Which of the words pairs has the same relationship Oven : heat Piano : wood Sound : noise Wife : husband

If Cuba had entered into a trade agreement with an Asian country in 1903 without US approval, which of the following agreements or amendments would that agreeme