DNA and RNA share a number of similarities, but they also differ in certain aspects of their structure.

Which nitrogenous base is found in RNA but is not found in DNA?

uracil

adenine

thymine

cytosine

Select the correct stages of growth for invertebrates. embryo, larva, pupa embryo, larva, adult larva, pupa, nymph

How does the cell move materials across its membrane in order to keep its internal environment constant?

All of the following are true of the thymus gland except that it

Which series correctly lists the order of species (from A to E) that belong on the timeline? A. Africanus, A. Afarensis, H. Erectus, H. Habilis, H. Sapiens H. Habilis, A. Africanus, H. Erectus, A. Afarensis, H. Sapiens A. Afarensis, A. Africanus, H.

Autotrophs might survive when heterotrophs cannot, because autotrophs are able to

Why are spiders considered to be an r selected species?

What are restriction enzymes used for in nature?

Material with bits of rocks and once living parts of animals are

Think about a flower growing in your garden you notice that all of the leaves are falling off why is this a problem for the plant

How does polymerase chain reaction make DNA fingerprinting more reliable