How does DNA hold information?

Find the exact value of each expression, if it is defined. $\tan ^{-1} 1$

Which of the following is true of a scientific theory

A) It is a method or device that applies scientific knowledge for some specific purpose.

B) It is only accepted after the person who came up with it has died.

C) It is formulated by many scientists over drinks at a convention.

D) It must demonstrate the effect of one variable by testing control groups and experimental groups.

E) It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope.

Julio tiene que hacer un trabajo para la escuela. Encierra en un círculo el verbo que mejor completa la oración.

1. Julio tiene que hacer un buen trabajo para que el maestro le (da / de) una buena nota.
2. Julio lleva su computadora portátil en caso de que las de la biblioteca (estén / están) ocupadas.
3. Julio volverá temprano a menos que no (encuentra / encuentre) toda la información.
4. Julio descarga lo que sea con tal de que la información (sea / es) valiosa.
5. Julio se va antes de que la biblioteca (cierre / cierra).

$f(x)=\sin x$. What is the absolute maximum of f ?

Explain why the structure of a DNA molecule is often described as a zipper.

You are suffering from streptococcus throat infection. You share which the following with the bacteria that is responsible for your condition:

a) you both have genetic material in your nucleus

b) you and streptococcus have nothing in common

c) you both belong to the same domain

d) you both are made up of cells

How do the nucleotides in DNA bond with each other within a strand? How do they bond with each other across strands?

Use the Half-angle Formulas to find the exact value of each expression. $\sin 22.5^{\circ}$

What is the correct order of the steps of the scientific method?

¿Cuáles son las formas correctas del presente de los verbos en paréntesis? Querido Chico Cansado:

Tengo algunas sugerencias para ti. Como estás cansado todo el tiempo te recomiendo que ____ (dormir) más. Es importante que descanses bien. En cuanto a tu mal humor, te sugiero que ____ (meditar) por la mañana y ____ (practicar) un deporte que te guste por la tarde. No hay que olvidar que es bueno que te ____ (rodear) de gente que te cae bien.

Mucha suerte.

Yo

Explain the steps of the scientific method in the correct order.

Describe the structure of a nucleotide.

Which of the following statements best distinguishes hypotheses from theories in science?

(A) Theories are hypotheses that have been proved.

(B) Hypotheses are guesses; theories are correct answers.

(C) Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.

(D) Hypotheses and theories are essentially the same thing.