A protein is made up of blank; the bond that holds it together is called blank

In a series of rock layers, a geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish and shellfish.

Fruit flies in the wild have brown bodies, red eyes, and straight wings. Many variations have been produced and used to study genetics. Consider the data below.

Crossing over occurs in prophase of meiosis 1 crissing over results in A) new combinations of genes on a chromosome b) genetically identical homorogous chromosome C) double the number of original chromosome D) half the number of original chromosome

True or False. Tension, compression and shearing are the three types of stress in the Earth's crust.

Which of the following are signs and symptoms of dengue fever

The circulatory system of organisms carries nutrients throughout that organism. which cell structure has a similar function? (a) cytoplasm (b) mitochondria (c) endomembrane system (d) large central vacuole

Why is it so important for your body to maintain water or sugar homeostasis

The area of the specimen when looking through the microscope is the

What are three ways to care for the male reproductive system?

Which of these describes the Gulf Stream? A. A coral reef in the Pacific Ocean B. A sea floor trench in the Atlantic Ocean C. A strong current of warm water D. An upwelling of water at the poles