CSCC BIO 1111 EXAM 3 FINAL PAPER 2026
SOLVED QUESTIONS AND FULL SOLUTION
UPDATED
◉ All ecosystems
1. need a continuous outside energy source.
2. stay exactly the same once mature.
3. are entirely self-sufficient.
4. consist of only living organisms.
5. None of these answers are correct.
Answer: need a continuous outside energy source.
◉ Which of the following is not true about a hypothesis?
1. It can be proven to be true.
2. It can be proven to be false.
3. It is a tentative explanation.
4. Previous knowledge can help support it.
5. It must be testable to be useful.
Answer: It can be proven true.
,◉ Organisms that obtain energy by eating nutrients that make up
other organisms are called
1. autotrophs.
2. plants.
3. heterotrophs.
4. producers.
5. chemotrophs.
Answer: heterotrophs
◉ True or False: The smallest chemical unit of an element is a
molecule.
Answer: False
◉ In an experimental procedure, the _______________ is manipulated by
the investigator to determine whether it influences the phenomenon
of interest.
1. standardized variable
2. control group
3. dependent variable
4. independent variable
5. Both control group and standardized variable are correct.
Answer: independent variable
, ◉ Which is the correct sequence for levels of biological organization
occurring beyond the individual?
1. population - ecosystem - community - biosphere
2. community - population - ecosystem - biosphere
3. community - population - biosphere - ecosystem
4. population - community - ecosystem - biosphere
5. ecosystem - population - biosphere - community
Answer: population - community - ecosystem - biosphere
◉ A major difference between bacteria and eukaryotes is that
bacteria
1. have cell walls and eukaryotes do not.
2. do not have a nucleus in their cells and eukaryotes do.
3. have a nucleus in their cells and eukaryotes do not.
4. are autotrophs and eukaryotes are not.
5. do not have cell walls and eukaryotes do.
Answer: do not have a nucleus in their cells and eukaryotes do.
◉ What did Charles Darwin propose after observing the 11-inch
long nectaries of the Angraecum sesquipedale orchid in
Madagascar?
1. the existence of a moth with a proboscis of 10-11 inches
2. the existence of a bird with a proboscis of 10-11 inches
SOLVED QUESTIONS AND FULL SOLUTION
UPDATED
◉ All ecosystems
1. need a continuous outside energy source.
2. stay exactly the same once mature.
3. are entirely self-sufficient.
4. consist of only living organisms.
5. None of these answers are correct.
Answer: need a continuous outside energy source.
◉ Which of the following is not true about a hypothesis?
1. It can be proven to be true.
2. It can be proven to be false.
3. It is a tentative explanation.
4. Previous knowledge can help support it.
5. It must be testable to be useful.
Answer: It can be proven true.
,◉ Organisms that obtain energy by eating nutrients that make up
other organisms are called
1. autotrophs.
2. plants.
3. heterotrophs.
4. producers.
5. chemotrophs.
Answer: heterotrophs
◉ True or False: The smallest chemical unit of an element is a
molecule.
Answer: False
◉ In an experimental procedure, the _______________ is manipulated by
the investigator to determine whether it influences the phenomenon
of interest.
1. standardized variable
2. control group
3. dependent variable
4. independent variable
5. Both control group and standardized variable are correct.
Answer: independent variable
, ◉ Which is the correct sequence for levels of biological organization
occurring beyond the individual?
1. population - ecosystem - community - biosphere
2. community - population - ecosystem - biosphere
3. community - population - biosphere - ecosystem
4. population - community - ecosystem - biosphere
5. ecosystem - population - biosphere - community
Answer: population - community - ecosystem - biosphere
◉ A major difference between bacteria and eukaryotes is that
bacteria
1. have cell walls and eukaryotes do not.
2. do not have a nucleus in their cells and eukaryotes do.
3. have a nucleus in their cells and eukaryotes do not.
4. are autotrophs and eukaryotes are not.
5. do not have cell walls and eukaryotes do.
Answer: do not have a nucleus in their cells and eukaryotes do.
◉ What did Charles Darwin propose after observing the 11-inch
long nectaries of the Angraecum sesquipedale orchid in
Madagascar?
1. the existence of a moth with a proboscis of 10-11 inches
2. the existence of a bird with a proboscis of 10-11 inches
