ameliaguzman751

What is 2+2+2*2?

A person is infected with Streptococcus pneumoniae, an extracellular bacterium. Which cells of the adaptive immune system will be the most important in the immune response to this bacterium?


Helper T cells and cytotoxic T cells
B cells and cytotoxic T cells
Helper T cells and B cells
B cells and neutrophils

Can E. coli and E aerogenes be differentiated morphologically? please help

1. Which oxide, CrO3 or CrO is more basic in water and why? 

What is the Y-intercept of the line below?

A. -1/2

B. -3/4

C. -2/3

D. -1

A nerve impulse is

Describe the structure of the plasma membrane. What structures are on the side of the membrane facing the environment, the side of the membrane facing the cell, and the inside of the membrane?

How do ionic bonds affect the properties of ionic compounds?

Explain why potassium chlorate is hygroscopic.

Hygroscopic means

A solution containing 10 mmol cacl2 is diluted to 1 litre calculate the number of grams of cacl2 .2h2o per milliliters of the final solution 

Is iron bar rust a chemical property?

Explain why your brain cells and skin cells look and behave differently from each other even though they have the same genome?

What is the pH of a 0.015 M aqueous solution of barium hydroxide?

A) 12.25
B) 12. 18
C) 1.82
D) 10.41 E) 1.5

Derivative of x^4

Why is RNA necessary to act as a messenger? Why can't the code be taken directly from the DNA? How do some cells become brain cells and others become skin cells, when the DNA in ALL the cells is exactly the same? In other words, if the instructions are exactly the same, how does one cell become a brain cell and another a skin cell?

What happens when metals react with acids?

Define pharmaceutical

1. What is the name of the small gaps between neurons?

Name the colour name without E

What is 1+1