- During photosynthesis, one gas is absorbed by plants during the beginning of the reaction and another released as the plant completes the reaction to make its food. What are these gases?
Your answer:
absorbed - carbon dioxide, released - oxygen
absorbed - oxygen, released - nitrogen
absorbed - oxygen, released - carbon dioxide
absorbed - carbon dioxide, released - nitrogen
- The United States currently derives the greatest proportion of its energy from which of the following resources?
Your answer:
natural gas
coal
oil shale
crude oil
- Which of the following is not a suitable environment for coal formation?
Your answer:
marsh
swamp
deep sea basin
bog
- One of the reasons crude oil is considered a product of organic matter transformation is:
Your answer:
its texture.
its viscosity.
its chemistry.
its color.
- From which of the following alternatives to the fossil fuels does the U.S. currently derive the most energy?
Your answer:
wind power
solar power
geothermal power
nuclear power
- Organic chemical compounds with the same chemical formula but different arrangements of bonded atoms are called:
Your answer:
isomers.
isotopes.
polymorphs.
isochrons.
- The chemical reaction between an alcohol and an acid generates what type of chemical compound?
Your answer:
ester
carbohydrate
protein
hydrocarbon
- Which of the following is not an alkane hydrocarbon?
Your answer:
C10H22
C2H6
C4H10
C6H15
- Amino acids are the building blocks of:
Your answer:
proteins.
carbohydrates.
alcohols.
fats.
- The reddish brown color that typically accompanies vegetation, like leaves, that lie in stagnant waters indicates the presence of what chemical compounds?
Your answer:
esters
organic acids
amino acids
inorganic acids
- A solution with a pH of 12 should be classified as:
Your answer:
highly acidic.
highly basic.
It is not possible for a solution to have this pH.
neutral.
- Chemical elements are arranged in the periodic table according to:
Your answer:
their atomic mass.
their atomic number.
their color in solution.
their alphabetical position.
- Which of the following is not a biologically heavy element?
Your answer:
iron
lead
mercury
arsenic
- The highest temperature superconductors incorporate what elements as their essential ingredients?
Your answer:
the alkali metals
the rare earths
the halogens
the noble gases
- Based on their cell structure, humans are classified as:
Your answer:
eukaryotes.
karyotypes.
deguarrotypes.
prokaryotes.
- Genes are located on the cell's:
Your answer:
chromosomes.
ribosomes.
endoplasmic reticulum.
golgi apparatus.
- Which of the following sex chromosome pairings would not be possible for twins?
Your answer:
Child 1 - xx, Child 2 - xx
Child 1 - xy, Child 2 - xx
Child 1 - xx, Child 2 - yy
Child 1 - xy, Child 2 - xx
- Nonsexual cell reproduction requires what type of cell division to take place?
Your answer:
mitosis
cirrhosis
meiosis
neuroses
- A properly fertilized human zygote will possess how many chromosomes?
Your answer:
32
46
64
23
- The chemical that governs human heredity is:
Your answer:
TWA.
DNA.
RNA.
r-RNA.
- ________ is the type of cell division required during the production of sex cells.
Your answer:
- What family of organic compounds is the primary soild product of the photosynthetic cycle?
Your answer:
- What cell organelle is commonly described as the cell's powerbouse?
Your answer:
- What periodic table element group contains the least reactive elements?
Your answer:
- What organelle, present in both plant and animal cells, is necessary for protein synthesis?
Your answer:
- These organelles are present in both plant and animal cells, but you would expect to find larger ones in plant cells because they help the plant stalk retain rigidity.
Your answer:
- What is found only in plant cells and helps the cell maintain its shape?
Your answer:
- What type of microscope has very good resolving power and allows viewing of the cell's surface?
Your answer:
- What do we call the cell's "control center"?
Your answer:
- What group of chemical elements, containing chlorine and fluorine, forms different types of salt compounds by accepting an electron into their atomic structure?
Your answer: