Which invention from the 17th century allowed for the development of the modern cell theory?

During transcription the DNA base sequence is transcribed into a complementary mRNA sequence. A codon table like the one shown below lists the amino acids coded for by particular triads of mRNA bases. A segment of DNA has undergone a mutation in which one nucleotide has been changed. The original codon resulting from the original DNA sequence was UUA and the new codon sequence is CUG. Use the codon table to determine whether or not this mutation will cause a change in the phenotype of the organism.  

Your backyard represents a(n) _______ while the crickets in the backyard represent a(n) ______.

Animals that feed on both plants and other animals are called

A scientist wants to determine if classic rock music will improve test scores for students in college Biology. Which of the following parts of the experiment would be a independent variable?

Histones

In the figure, which structure is the liver?

The diagram below illustrates a biochemical process that occurs in organisms. What is another name for the substance labeled “catalyst”?  

The gopher tortoise is a very important part of Florida ecosystems. The  gopher tortoise is especially important because the burrows, which are dug by the tortoises, also provide homes for other animals, such as indigo snakes, gopher frogs, mice, foxes, skunks, opossums, rabbits, quail, armadillos, burrowing owls, snakes, lizards, frogs, toads and some invertebrates. Gopher tortoise burrows are home to about 250 species of animals at one time or another. Some species share the burrows with the tortoises and others utilize abandoned burrows. This means that the gopher tortoise is

Some unicellular organisms are motile (have the ability to move) and some are non-motile. Which cellular structures are associated with movement?