What came first oxygen or life?

How is all the information contained in the DNA molecule able to fit in the nucleus? it is broken into microscopic segments the genes are packed into chromosomes the double strand is twisted and coiled no one knows

What does this similarity at the molecular level in yeast and humans most likely indicate

The following is a list of the events that occur during a muscle contraction. 1. Myosin cross-bridges bind to the actin. 2. The free myosin head splits ATP. 3. Calcium ion is released from the sarcoplasmic reticulum. 4.

In a blood transfusion, it is important that the donor's blood and recipients blood are compatible. If they are not what will happen to the recipients blood?

What is the role of CdKs?

According to piaget, at what age will most children enter the concrete operations stage of cognitive development? a. between the ages of 4 and 6 b. usually by age 2 c. by age 12 d. by age 7

When plants wilt, their soft stems and leaves begin to droop. What is going on inside the plants' cells that causes plants to droop like this?

How is evolution seen today

What was Marshall Nirenberg and Heinrich Matthaei's contribution to our current understanding of the genetic code? discovery of codons discovery and extraction of DNA creation of a model of DNA creation of Photo 51

How does pili affect the formation of bacterial colonies?