| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
The gravitational interaction of Earth and the Moon is responsible for which of these?
the northern lights |
|
day and night cycle |
|
tides |
|
seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.
Which of the following members of the food chain are most alike?
producers and tertiary consumers |
|
herbivores and autotrophs |
|
scavengers and decomposers |
|
primary consumers and omnivores |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
water |
|
salt |
|
fats |
|
minerals |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
left, right |
|
right, left |
|
right, right |
|
left, left |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
components |
|
reactants |
|
fuel |
|
products |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).