How do some cells become brain cells and other become skin cells, when the dna in all exactly the same. in other words, if the instructions are exactly the same, how does one cell be cell and another a skin cell?

In the wild-type operon (a + b + c + d + e+), how does the presence of the signal affect expression of the structural enzymes?

The character having curly hair is called dominant and straight hair is called recessive

Steroids, cholesterol, and wax are all examples of?

You have designed a new drug which halts cell division. Studies on its effects show cell after cell with the chromosomes lined up on the equatorial plane. Thus, your drug most likely blocks cells from moving out of ___.

What is the difference between a heterogeneous mixture and a homogeneous mixture? Question 4 options: A heterogeneous mixture is a pure substance and a homogeneous mixture is not.

Why do microbiologists often disinfect work areas before working with bacterial cultures?

According to the animation, to what genetic element does the rna polymerase bind? according to the animation, to what genetic element does the rna polymerase bind? the operator the repressor mrna the repressor protei

Is Pinocytosis a form of passive transport?

If part of the xylem of a young oak tree is destroyed, which of the following functions would it interfere with most? A) conduction of water to the leaves B) conduction of carbohydrates to the roots C) absorption of carbon dioxide from air

20. What is a nucleotide?