Bio 1023 BRCC Exam 1 Questions With Complete Solutions
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Course
BRCC
Institution
BRCC
Bio 1023 BRCC Exam 1 Questions With
Complete Solutions
Uranium-238 has a half-life of 4.5 billion years. You have a rock that formed with 100,000
uranium-238 molecules. How many uranium-238 molecules will be left in 4.5 billion years?
50,000
Provide the date of evolution of the following o...
Bio 1023 BRCC Exam 1 Questions With
Complete Solutions
Uranium-238 has a half-life of 4.5 billion years. You have a rock that formed with 100,000
uranium-238 molecules. How many uranium-238 molecules will be left in 4.5 billion years?
50,000
Provide the date of evolution of the following organisms:
A. the multicellular eukaryotes
B. the first prokaryote evolve 1.2 bya
3 bya
What type of rock can be dated with radiometric methods? Rock formed from a volcanic
eruption
Which list is organized from most to least inclusive? kingdom, phylum, class, order, genus
The field of biogeography provides information about
a. the geographic location of a species. b. the distribution or range of a species.
, Bio 1023 BRCC Exam 1 Questions With
Complete Solutions
c. the adaptations of a species over time. d. the evolutionary history of a species. all of the
above
Which condition(s) is/are likely to be found in a habitat near or in the hydrothermal vents of Lost
City?
A. extreme heat C. extreme pressure B. basic pH
D. anaerobic E. all all
Which organism would most likely NOT be found at or near a deep-sea hydrothermal vent?
aerobic bacteria
A prokaryote has all of the following structures, EXCEPT
A. a cell wall. B. ribosomes. C. mitochondria. D. DNA. mitochondria
. Which prokaryotes would one expect to find in a salt mine?
A. E. coil B. methanogens C. aerobes D. halophiles halophiles
, Bio 1023 BRCC Exam 1 Questions With
Complete Solutions
Which prokaryotes were the first to oxygenate our planet?
A. cyanobacteria B. aerobic bacteria C. archaeans D. halophiles A. cyanobacteria
. Long structures that help bacteria move are called ___________, while shorter, hair-like
structures that enable bacteria to stick to a surface are called ___________. flagella, pilli
1. Fill in the gap about the process by which radioactive decay takes place.
a. During a radioactive decay event, an unstable isotope emits one or more ----- ?? .
b. Radioactive elements continue to decay until they reach a --- ?? High energy particle
stable form
2. Indicate the time of evolution of the following groups of organisms.
i. The first prokaryotes ?
ii. First multicellular eukaryotes ? 3.5 bya
1.2 bya
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