How did Watson and .Crick describe the structure of DNA?

Describe the structure of mitochondria, and explain their role in cellular respiration.

DNA can be modeled as an elastic rod that can be twisted or bent. Suppose a $\mathrm{DNA}$ molecule of length $L$ is bent such that it lies on the arc of a circle of radius $R_{c}$. The reversible work involved in bending $\mathrm{DNA}$ without twisting is $w_{\text {bend }}=\frac{B L}{2 R_{C}^{2}}$ where $B$ is the bending force constant. The $\mathrm{DNA}$ in a nucleosome particle is about $680 . \text{\AA}$ in length. Nucleosomal $\mathrm{DNA}$ is bent around a protein complex called the histone octamer into a circle of radius $55 \text{\AA}$. Estimate the reversible work involved in bending the $\mathrm{DNA}$ around the histone octamer if the force constant $B=2.00 \times 10^{-28} \mathrm{~J} \mathrm{~m}$.

Describe why a protein that binds to a specific sequence of double-stranded DNA is unlikely to bind to the same sequence if the DNA is single-stranded.

Describe the structure of infl uenza virus and its spikes.

What is the Lewis structure of Carbon Monoxide $(\text{CO})$?

How do compact and spongy bone differ in structure ?

Describe and name the four different levels of protein structure.

Revisit the chart you made to analyze a rite of passage. With a partner, fill in the chart for ''Through the Tunnel" Then discuss this question with your classmates: Do you think that because Jerry is the only one who knows about his swim through the tunnel, it is less a rite of passage than that of Temas?

What is the difference between the leading strand and the lagging strand in DNA replication?

Which of the following best describes how some sets of identical twins appear to be distinct from one another? (1) Their DNA is essentially the same and the environment plays little or no role in the expression of their genes. (2) Their DNA is very different and the environment plays a significant role in the expression of their genes. (3) Their DNA is very different and the environment plays little or no role in the expression of their genes. (4) Their DNA is essentially the same and the environment plays a significant role in the expression of their genes.

What is the value of restriction enzymes in recombinant DNA technology?

In some autoimmune diseases, an individual develops antibodies that recognize cell constituents such as DNA and phospholipids. Some of the antibodies react with both DNA and phospholipids. What is the structural basis for this cross-reactivity?

Write a statement that retrieves the wHour field of a SYSTEMTIME structure.