ASVAB General Science Practice Test 627399 Results

Your Results Global Average
Questions 5 5
Correct 0 3.32
Score 0% 66%

Review

1

Which of these digestive enzymes is not produced by the pancreas?

63% Answer Correctly

lipase

trypsin

pancreatic amylase

gastric acid


Solution

The acids produced by the pancreas contain several enzymes that aid in digestion.  Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.


2

Universal donor blood can be given to a person with any blood type. Which blood type is the universal donor?

51% Answer Correctly

O-negative

AB

O

O-positive


Solution

Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.


3

The biosphere consists of which of the following?

87% Answer Correctly

lithosphere

atmosphere

all of these

hydrosphere


Solution

The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).


4

In cell biology, cytokinesis results in two separate:

57% Answer Correctly

cells

nuclei

chromosomes

chromatids


Solution

During cell division, the cytokinesis phase occurs when cytoplasm and cell membranes complete their separation resulting in two separate cells.


5

The hottest of Earth's atmospheric layers is which of the following?

74% Answer Correctly

stratosphere

thermosphere

troposphere

mesosphere


Solution

Temperatures again increase with altitude in the thermosphere which is the hottest (4,530 °F / 2,500 °C) atmospheric layer due to direct exposure to the Sun's radiation. However, the gas in this layer is highly diluted so even though the atoms of gas may be very high in temperature, there are too few of them to effectively transfer much heat.