This is our second free GED Science practice test. These questions are based on the new 2014 version of the GED, which is definitely more challenging. The questions will be on a wide range of topics, with approximately 40% on Life Science, 40% on Physical Science, and 20% on Earth & Space Science.
Directions: Choose the best answer to each question.
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Homozygous indicates two identical genes for a hereditary characteristic. In this case, the woman has two genes for red hair (bb). The genes are in lower case since they are recessive. She only has genes for red hair, so she has red hair.
You can solve this type of problem by filling out a Punnett Square as shown below:
Children with the genes BB will have brown hair, but none of the children have this combination of genes.
Children with the genes Bb will also have brown hair (because B is dominant), and 2 out of every 4 children, or 50%, will have brown hair.
Children with the genes bb will have red hair, and 2 out of every 4 children will have red hair.
“In July, 1957, members of a field party from the University of Kansas — Museum of Natural History, under the direction of Sydney Anderson, spent 12 days collecting vertebrates in the vicinity of Creel in southwestern Chihuahua.”
“Among the specimens were two snakes representing an undescribed species of the genus Geophis.”
“The discovery of a new Geophis species in southern Chihuahua increased to 21 the number of species of the genus known to occur in Mexico and extended the known range of the genus by over 500 miles.“
“Geophis aquilonaris is different from all other Mexican representatives of the genus in having, on the body and tail, numerous, alternating pale and dark bands.”
The types of pesticides that are used in Napa Valley.
The types of parasites that are present in Napa Valley.
The types of pathogens that are present in Napa Valley.
The types of pesticides that the USDA evaluated.
°C = (°F − 32) * 5/9
°C = (70 − 32) * 5/9
°C = 38 * 5/9
°C = (38 * 5)/9
°C = 21.1111
The independent variable is the duration of exposure to Vancomycin; the dependent variable is bacterial colony size.
The independent variable is the bacterial colony size; the dependent variable is the duration of exposure to Vancomycin.
The independent variable is the bacterial colony size; the dependent variable is the type of bacteria.
The independent variable is the duration of exposure to Vancomycin; the dependent variable is the type of bacteria.
It is equally effective against Staphylococcus and Streptococcus.
Primates evolved from sharks.
The original ancestor of all the species on the cladogram had a bony skeleton.
Dinosaurs are more closely related to crocodiles than they are to amphibians.
Ray-finned fish have an amniotic egg.
The cladogram shows that dinosaurs and crocodiles are closely related. They both have an amniotic egg and they both have two post-orbital fenestrae. Amphibians branched off before either of these developments, so they are less closely related.
Primates and sharks are on two different branches of this cladogram, so primates did not evolve from sharks. The cladogram shows that the original ancestor of all of these species was a vertebrate, but the original ancestor of the shark did not have a bony skeleton. Ray-finned fish branched off before the evolution of the amniotic egg.
Test a fifth group at a higher dosage than 200 mg.
Only use two groups instead of four groups so the data is easier to compare.
Make the difference in the dosage amount between the groups much larger.
Add a fifth group to the study and set the dosage to 0 mg/day.
102, 110, 114, 116, 125, 144
Since there is an even amount of numbers (6), there is no number right in the middle. So you must take the average of the two middle numbers. The two middle numbers are 114 and 116. The average of these numbers is 115 (The calculation is (114 + 116) ÷ 2 = 115).
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