Which kind of bonds are most easily broken in water?

a. ionic

b. peptide

c. disulphide

d. single covalent

e. double covalent

As Joe prepares to spar with a tae kwon do opponent, his heart rate and respiration rate increase. These are indicators that which branch of the nervous system has been activated? a. central b. autonomic c. parasympathetic d. sympathetic

So whats the answer a b c or d

Which of the following shows the correct order from most simple to most complex: atom, molecule, organelle, macromolecule molecule, atom, macromolecule, organelle tissue, cell, organ atom, macromolecule, tissue, organ

Transports water and sugars in a plant a.) non-vascular tissue b.) vascular tissue

In nature, the elements oxygen and hydrogen are usually found as gases with the formulas O2 and H2. Why? Are they compounds? Are they molecules?

A researcher wishes to place electrodes in the brain so that existing motor activity can be used to control an artificial hand designed for amputees. the researcher should place the electrodes in the

What are the only kinds of cells that undergo meiosis?

What are the organs of the endocrine system

Which of the following changes occurs in an ecosystem when its biodiversity increases? A. Relience decreases B. Species Richness Decreases C. Artificial selection increases D. Stability increases

Fungi have characteristics that make them similar to both plants and animals. Which characteristic do fungi share with plants but not animals? reproduce sexually contain nuclei have cell walls make their own food