4. Alcohols have hydroxyl groups (-OH), organic acids have (blank) groups. Amino acids have nitrogen in a (blank) group, but since they are acids, they also have a (blank) group. The building block of DNA is nucleotides, which includes a 5- sugar called (blank), a nitrogenous base,
And a (blank) group.

Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 → 2fe2o3. identify the value of x that will balance the equation.

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?