| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.77 |
| Score | 0% | 55% |
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
peripheral |
|
somatic |
|
central |
|
autonomic |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
__________ is caused by a lack of Vitamin C.
anemia |
|
diabetes |
|
shingles |
|
scurvy |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Which of the following describes the Earth's outer core?
makes up most of the Earth's volume |
|
liquid |
|
primarily solid |
|
solid |
The Earth's core is divided into the liquid outer core (1,430 miles or 2,300 km radius) and the solid inner core (745 miles or 1,200 km radius).
Examples of secondary consumers include:
plankton |
|
chickens |
|
grasshoppers |
|
wolves |
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.
Which of the following substances gives up positively charged hydrogen ions (H+) when dissolved in water?
alkaline |
|
acid |
|
base |
|
solution |
An acid is a substance that gives up positively charged hydrogen ions (H+) when dissolved in water. A base (alkaline) gives up negatively charged hydroxide ions (OH-) when dissolved in water. pH is a scale that measures of how basic or acidic a solution is. Numbered from 0 to 14, solutions with a pH of 7 are neutral, less than 7 are acidic, more than 7 are alkaline.