How are the long DNA molecules found in eukaryotes packed into short chromosomes?

Which of these statements describes how organisms could use molecules of glucose? I. Several glucose molecules could be assembled into a larger molecule. II.Glucose molecules could be broken apart to form smaller molecules. III.The atoms of glucose molecules could be combined with other elements to form a different molecule. A. I only B. Ill only C. I and II only D. I and III only E. I, II, and III

Explain how DNA is replicated.

Sketch the curve of intersection of the surfaces, and find a vector equation for the curve in terms of the parameter x=t. y=x, x+y+z=1

What are the four kinds of bases found in DNA?

This exercise generalizes the previous two. Let $(G,\ast)$ and $(H,\star)$ be groups. Their direct product is a new group $(G,\ast)\times (H ,\star)$ whose elements are all ordered pairs $(g,h)$ where $g\in G$ and $h\in H$. The operation for this group (let's use the symbol $\cdot$) is defined by

$$(g_1,h_1)\cdot (g_2,h_2)=(g_1\ast g_2,h_1\star h_2)$$

For example, let's consider $(\mathbb{Z}_5^*,\otimes)\times(\mathbb{Z}_3,\oplus)$. We have

$$\mathbb{Z}_5^*=\{1,2,3,4\}\text{ and }\mathbb{Z}_3=\{0,1,2\}$$

and therefore the elements of $(\mathbb{Z}_5^*,\otimes)\times (\mathbb{Z}_3,\oplus)$ are

$$\{(1,0),(1,1),(1,2),(2,0),(2,1),(2,2),(3,0),(3,1),(3,2),(4,0),(4,1),(4,2)\}$$

The operation $(g_1,h_1)\cdot (g_2,h_2)$ produces the value $(g,h)$ where $g=g_1\otimes g_2$ (operating in $\mathbb{Z}_5^*$) and $h=h_1\oplus h_2$ (operating in $\mathbb{Z}_3$). For example,

$$(2,1)\cdot (3,2)=(2\otimes 3,1\oplus 2)=(1,0)$$

You should convince yourself that if $(G,\ast)$ and $(H,\star)$ are groups, then $(G,\ast)\times (H,\star)$ is also a group. [Optional: Write a formal proof of this.] We now come to the point of this problem: If $(G,\ast)$ and $(H,\star)$ are finite cyclic groups, then sometimes $(G,\ast)\times (H,\star)$ is cyclic and sometimes it is not. The question is, under what condition(s) is the direct product of two finite cyclic groups also cyclic?

The demand function q = D(p) for a particular commodity is given in terms of a price p per unit at which all q units can be sold. (a) Find the elasticity of demand and determine the values of p for which the demand is elastic, inelastic, and of unit elasticity. (b) If the price is increased by 2% from $15, what is the approximate effect on demand? (c) Find the revenue R(p) obtained by selling q units at the unit price p. For what value of p is revenue maximized?$D(p)=3,000 e^{-0.04p}$

What would most likely happen if the ribosomes in a cell were not functioning? (1) The cell would undergo uncontrolled mitotic cell division. (2) The synthesis of enzymes would stop. (3) The cell would produce antibodies. (4) The rate of glucose transport in the cytoplasm would increase.

In a DNA molecule, the letters A, T, C, and G represent

(1) bases

(2) sugars

(3) starches

(4) proteins

Suppose you start with two DNA strands: ACCGTCAC and TCGCACGT. Use the "rules" of base pairing to list the bases on messenger RNA strands transcribed from those DNA strands.

Is photocopying a document similar to DNA replication? Think of the original materials, the copying process, and the final products. Explain how the two processes are alike. Identify major differences.

Which of the following is NOT a function of proteins?

A. store and transmit genetic information B. help to fight disease C. control the rate of reactions D. move substances into or out of cells

Make a table to summarize the contributions made to the cell theory by Robert Hooke, Matthias Schleiden, Theodor Schwann, and Rudolf Virchow.

Describe the major contributions of Hooke and Leeuwenhoek to cell biology.