4 human activities that interfere with ecosystems, food chains and food webs.

Which statement best summarizes Gregor Mendel's contribution to science Mendel formulated a hypothesis and then tested it. Mendel coined the word genes to describe inherited traits. Mendel found evidence that there are two factors for each trait.

Movement of dissolved substances in fluid from areas of high concentration to areas of low concentration

You are trying to identify this nucleic acid. All BUT one observation is an important clue to the nucleic acid's identity. That is it A) is single stranded. B) contains phosphate. Eliminate C) contains ribose sugar.

What is the human body made of?

A plant leaf is constructed from a variety of cell types with specialized structures and functions. Many of the properties of leaf cells facilitate some aspect of water transport.

Which of following statements are true? Check all that apply. The human body consists of only eukaryotic cells. Human cells can be both prokaryotic and eukaryotic. The human body consists of eukaryotic cells and prokaryotic cells.

Which describes the notation Tt for being the trait of being tall

Why would a lab technician choose a bacterial artificial chromosome for cloning a gene rather than a plasmid?

Vertebrates have a notochord during early embryonic development. True False

In the Earth's mantle, heat is transferred in large convection currents. Within these currents, A. hotter and cooler rock sink but do not rise. B. cooler rock rises and hotter rock sinks. C. cooler and hotter rock rise but do not sink. D.