Earth is estimated to be around
A) 6,000-8,000 years old.
B) 4,000-6,000 years old.
C) 4,600,000 years old.
D) 4,600,000,000 years old.
E) 4,600,000,000,000 years old.
Miller and Urey demonstrated the formation of organic molecules from simulating a primitive Earth atmosphere containing water vapor and the gases
A) carbon dioxide, hydrogen, methane, and ammonia.
B) carbon dioxide, methane, and ammonia.
C) hydrogen, methane, and ammonia.
D) oxygen, hydrogen, methane, and ammonia.
E) oxygen, methane, and ammonia.
Place the following in order of evolutionary history from earliest to most recent.
A) archaea, protists, and bacteria
B) archaea, eukarya, and protists
C) eukarya, archaea, and bacteria
D) archaea, bacteria, and eukarya
E) bacteria, archaea, and eukarya
On the basis of their DNA, select the answer that places the following species on the evolutionary tree in order according to their relatedness to their common ancestor. Differences from the common ancestor are underlined.
Common ancestor: ATCGCTATCGA
Species A: ATGGCTTTCGA
Species B: ATGGCTTTCAA
Species C: ATGGCTATCGA
A) 1: Species A, 2: Species B, 3: Species C
B) 1: Species A, 2: Species C, 3: Species B
C) 1: Species B, 2: Species A, 3: Species C
D) 1: Species C, 2: Species A, 3: Species B
E) 1: Species C, 2: Species B, 3: Species A
Which are all members of the domain Eukarya?
A) animals, plants, protists, and prokaryotes
B) protists, animals, and prokaryotes
C) eukaryotes and prokaryotes
D) plants, animals, fungi, and protists
E) plants, animals, fungi, and bacteria
Which describes plant groups in order of terrestrial adaptations from earliest to the most recent?
A) ferns, bryophytes, gymnosperms, and angiosperms
B) bryophytes, gymnosperms, ferns, and angiosperms
C) angiosperms, bryophytes, ferns, and gymnosperms
D) ferns, gymnosperms, bryophytes, and angiosperms
E) bryophytes, ferns, gymnosperms, and angiosperms
The greenhouse gases include
A) carbon monoxide, nitrogen, and ozone.
B) carbon dioxide, ozone, and methane.
C) carbon monoxide, methane, and nitrogen.
D) carbon dioxide, methane, and nitrous oxide.
E) methane, sulfur, and carbon dioxide.
The female reproductive structure of a flower is called a ____________ and is made up of three parts, the _______________.
A) Petal; inner, middle, and outer whorls
B) Pistil; stigma, style, and ovary
C) Pistil; anther, filament, and pollen tube
D) Stamen; anther, filament, and pollen tube
E) Style; anther, pollen tube, and ovary
Which of the following lists the levels of organization of the human body in the correct order, beginning with the simplest and ending with the most complex?
A) cells, organs, tissues, organ systems.
B) tissues, cells, organs, organ systems.
C) organs, organ systems, tissues, cells
D) organ systems, organs, tissues, cells
E) cells, tissues, organs, organ systems
The correct order of events in obtaining nutrients from food is __________.
A) digestion, ingestion, elimination
B) elimination, ingestion, digestion
C) ingestion, elimination, digestion
D) ingestion, digestion, elimination
E) digestion, elimination, ingestion
Leading to atherosclerosis, there is a progression of blood vessel disease. Which of the following most accurately describes the progression of the disease?
A) fatty streak development, obstructive plaque formed, plaque development
B) plaque development, obstructive plaque formed, fatty streak development
C) obstructive plaque formed, plaque development, fatty streak development
D) plaque development, fatty streak development, obstructive plaque formed
E) fatty streak development, plaque development, obstructive plaque formed