Feb 20 Macromolecule Precheck

Front

If the grasshopper were to be removed completely from the food web, what organism would be most affected? Options: The squirrel, The shrew, The deer, The rabbit

Back

The shrew

Front

Which organism receives the least amount of energy from the producer? Options: Owl, Grasshopper, Lilypad, Mouse

Back

Owl

Front

Which organism in this food chain is a secondary consumer? Options: Fish, Grass, Grasshopper, Hawk

Back

Fish

Front

Ostriches and gazelles eat together and watch for predators, benefiting both species. Options: mutualism, commensalism, predation, parasitism

Back

mutualism

Front

Mistletoe takes water and nutrients from the oak tree. This is good for the mistletoe but bad for the tree.

Back

parasitism

Front

Hermit crabs live in shells that snails don't use anymore. The hermit crab gets a nice free home.  This neither harms nor helps the snails.

Back

commensalism

Front

Is this a correct dot diagram for oxygen (O)?

Back

False

Front

In a polar covalent bond between two atoms, what happens to the electrons?

Back

Electrons are shared unequally, resulting in a partial charge on the more electronegative atom.

Front

Which of the following statements is false?

• Atoms of the various elements differ in their number of subatomic particles.
• All atoms of a particular element have the same number of protons in their nuclei.
• The neutrons and protons present in the nucleus of an atom are almost identical in mass; each has a mass of about 1 dalton.
• Atom is the smallest unit of an element that still retains the properties of the element.
• Protons and electrons are electrically charged particles. Protons have one unit of negative charge, and electrons have one unit of positive charge.

Back

Protons and electrons are electrically charged particles. Protons have one unit of negative charge, and electrons have one unit of positive charge.

Front

What is the atomic number of this atom?

Back

2