Choose the best answer.

Because there are more codons than amino acids,

a. some amino acids are specified by more than one codon.

b. some codons specify more than one amino acid.

c. some codons do not specify any amino acid.

d. some amino acids do not have codons.

What is the difference between an atom and a molecule?

Eva wants to make two pieces of pottery. She needs $\frac{3}{5}$ pound of clay for one piece and $\frac{7}{10}$ pound of clay for the other piece. She has three bags of clay that weigh $\frac{4}{5}$ pound each. How many bags of clay will Eva need to make both pieces of pottery? How many pounds of clay will she have left over?

The Moon and Earth rotate about their common center of mass, which is located about $4700 \mathrm{~km}$ from the center of Earth. (This is $1690 \mathrm{~km}$ below the surface.) (a) Calculate the acceleration due to the Moon's gravity at that point. (b) Calculate the centripetal acceleration of the center of Earth as it rotates about that point once each lunar month (about $27.3 \mathrm{~d}$ ) and compare it with the acceleration found in part (a). Comment on whether or not they are equal and why they should or should not be.

In the genetic code, one codon a. consists of three bases. b. specifies a single amino acid. c. specifies more than one amino acid. d. both a & b

Refer to functions f, g, and h. Evaluate the functions for the given values of x. $f(x)=x^{3}-4 x$, $g(x)=\sqrt{2 x}$, h(x)=2x+3. $(h \circ f)(-2)$

Solve each formula for the specified variable. d = rt for r

Latesha is making an open wooden toy box to hold the building blocks at her day care center. She has a square panel of cedar with side length of 24 inches. The first step is to cut out congruent squares from each corner. She needs to know what the side length of the cutout square should be in order for the finished toy box to have the greatest volume possible.

Draw a sketch to help solve the problem.

Find the center and radius of a circle.

$$x^2+4 x+y^2=5$$

For each given function, find the average rate of change over each specified interval.

$f(x)=x^2+x-12$ over (a) $[0,5]$ and (b) $[-3,10]$

Suppose that a couple will have three children. Letting $B$ denote a boy and $G$ denote a girl:

Assuming that all sample space outcomes are equally likely, find the probability of each of the events given in part $b$.

Use a tree to show the parent-child relationships in the following family. Joe has two children: Allan and Rosemary. Allan has three children: Christopher, Donetta, and AJ. Rosemary has three children: Peter, Paula, and Martin.

During protein synthesis, an anticodon on transfer RNA (tRNA) pairs with
a. DNA nucleotide bases.
b. ribosomal RNA (rRNA) nucleotide bases.
c. messenger RNA (mRNA) nucleotide bases.
d. other tRNA nucleotide bases.
e. All of these are correct.

Which of the following statements about the genetic code is true?

A) There is punctuation (spaces between adjacent codons), and codons can overlap.

B) One codon may code for one or more amino acids.

C) Each organism has its own unique genetic codon.

D) There are three stop coons: UAA, UAG, and UGA.

E) Each amino acid has a minimum of two codons.