A biologist discovers a new species of animal. It does not have a notochord, but it does have a backbone. Can she classify it as a chordate? Explain your answer.

Whats is the most common gas in earths atmosphere

Where is rna found?

A case-control study was conducted to assess whether occupational radiation exposure among men was associated with Down syndrome in their children. The investigators matched cases and controls on age of the mother at childbirth by 5-year categories.

Which statement correctly describes a feature of carrying capacity

Repelling magnets will a. push apart. b. pull together. c. not affect each other.

Which of the following are examples of ways humans and plants have coevolved? Pick all that apply A. Humans have bred plants to use as food B. Plants provide a source of nitrogen C. Humans aid in pollinating plants D.

By what mechanism does PI-3 phosphate promote activation of protein kinase B (PKB) ? a. recruiting PKB to the plasma membrane b. recruiting the activating kinase PDK1 to the plasma membrane c.

What is the definition of "Mass"?

Which of the following is a correct statement? Select one: a. If you want to make a cDNA library, it doesn't matter which tissue you isolate the mRNA from. b.

In fruit flies long wings (W) are dominant to short wings. What is the phenotype of the known parent