1|Page
BIO 1108 EXAM 2 2025/2026 NEW WITH ALL
COMPLETE QUESTIONS AND DETAILED ANSWERS
(EXPERT VERIFIED) FOR GUARANTEED PASS
TOP-RATED A+.
BIO 1108
Prepare for BIO 1108 2025/2026 Exam with confidence. This
comprehensive resource includes updated exam questions covering
topics like ecology, evolution, genetics, and organismal biology. Ideal
for students in introductory biology.
For the "light" reaction to occur, an electron donor (____)
and an ultimate acceptor (______) are needed.
A) NADPH; water
B) water; ATP
C) water; NADPH
D) ATP; NADPH
E) water; NADP+ ...... ANSWER ....... E
Which molecule is oxidized in the photosynthetic reaction?
A) CO2
B) H2O
C) C6H12O6
,2|Page
D) Sunlight ...... ANSWER ....... B
In terms of the evolution of photosynthesis, which process
happened first?
A) endosymbiosis
B) mitochondrial membrane structure
C) chloroplast membrane structure
D) horizontal gene transfer ...... ANSWER ....... A
What is the most abundant protein on Earth?
A) Rubisco
B) CO2
C) 3-PGA
D) NADPH ...... ANSWER ....... A
What is the inital carbon input in the Calvin cycle?
A) C6H12O6
B) Triose phosphate
C) CO2
D) Rubisco ...... ANSWER ....... C
,3|Page
A high school student is carrying out a science project. She
plants alfalfa seeds, and encloses an area planted with one set
of alfalfa seeds within a box covered in red cellophane
(which reflects light of red wavelengths). She leaves another
set of planted alfalfa seeds uncovered. What do you expect
she'll find in these two alfalfa populations when her science
project is over?
A) germination rate will be higher in the uncovered seed set
B) the germination rate will be lower in the uncovered seed
set
C) the germination rate will be higher in the uncovered seed
set
D) The uncovered seed set will not germinate while the
covered set will ...... ANSWER ....... C
Which of the following statements is true regarding the fruits
produced by angiosperms?
A) fruits are typically derived from the seed coat
B) fruits cannot ripen once exposed to ethylene
C) fruits are typically derived from the wall of the ovary
D) fruits ripen in response to far red light ...... ANSWER
....... C
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Which of the following statements is true of the seeds of both
gymnosperms and angiosperms?
A) seeds fro both plants contain a triploid (3n) endosperm
B) Seeds from both plants contain a diploid (2n) embryo
C) seeds from both plants contain a haploid (1n) seed coat
D) seeds from both plants contain a haploid (1n) male
gametophyte ...... ANSWER ....... B
In ferns, both the gametophyte and sporophyte are
physiologically capable of surviving on their own. What is
the most likely reason that vascular tissues are present only in
the sporophyte generation?
A) Vascular tissues are incompatible with desiccation
tolerance needed for gametophytes to survive
B) There is no advantage for the gametophyte to grow tall
because fern gametophytes typically produce only male or
female gametes at any one time.
C) There is no advantage for the gametophyte to grow tall
because gametes must be produced near the ground where
the water needed for their free-swimming sperm is most
likely to be found.
D) Haploid organisms are incapable of developing vascular
tissues such as xylem and phloem. ...... ANSWER .......
C
BIO 1108 EXAM 2 2025/2026 NEW WITH ALL
COMPLETE QUESTIONS AND DETAILED ANSWERS
(EXPERT VERIFIED) FOR GUARANTEED PASS
TOP-RATED A+.
BIO 1108
Prepare for BIO 1108 2025/2026 Exam with confidence. This
comprehensive resource includes updated exam questions covering
topics like ecology, evolution, genetics, and organismal biology. Ideal
for students in introductory biology.
For the "light" reaction to occur, an electron donor (____)
and an ultimate acceptor (______) are needed.
A) NADPH; water
B) water; ATP
C) water; NADPH
D) ATP; NADPH
E) water; NADP+ ...... ANSWER ....... E
Which molecule is oxidized in the photosynthetic reaction?
A) CO2
B) H2O
C) C6H12O6
,2|Page
D) Sunlight ...... ANSWER ....... B
In terms of the evolution of photosynthesis, which process
happened first?
A) endosymbiosis
B) mitochondrial membrane structure
C) chloroplast membrane structure
D) horizontal gene transfer ...... ANSWER ....... A
What is the most abundant protein on Earth?
A) Rubisco
B) CO2
C) 3-PGA
D) NADPH ...... ANSWER ....... A
What is the inital carbon input in the Calvin cycle?
A) C6H12O6
B) Triose phosphate
C) CO2
D) Rubisco ...... ANSWER ....... C
,3|Page
A high school student is carrying out a science project. She
plants alfalfa seeds, and encloses an area planted with one set
of alfalfa seeds within a box covered in red cellophane
(which reflects light of red wavelengths). She leaves another
set of planted alfalfa seeds uncovered. What do you expect
she'll find in these two alfalfa populations when her science
project is over?
A) germination rate will be higher in the uncovered seed set
B) the germination rate will be lower in the uncovered seed
set
C) the germination rate will be higher in the uncovered seed
set
D) The uncovered seed set will not germinate while the
covered set will ...... ANSWER ....... C
Which of the following statements is true regarding the fruits
produced by angiosperms?
A) fruits are typically derived from the seed coat
B) fruits cannot ripen once exposed to ethylene
C) fruits are typically derived from the wall of the ovary
D) fruits ripen in response to far red light ...... ANSWER
....... C
, 4|Page
Which of the following statements is true of the seeds of both
gymnosperms and angiosperms?
A) seeds fro both plants contain a triploid (3n) endosperm
B) Seeds from both plants contain a diploid (2n) embryo
C) seeds from both plants contain a haploid (1n) seed coat
D) seeds from both plants contain a haploid (1n) male
gametophyte ...... ANSWER ....... B
In ferns, both the gametophyte and sporophyte are
physiologically capable of surviving on their own. What is
the most likely reason that vascular tissues are present only in
the sporophyte generation?
A) Vascular tissues are incompatible with desiccation
tolerance needed for gametophytes to survive
B) There is no advantage for the gametophyte to grow tall
because fern gametophytes typically produce only male or
female gametes at any one time.
C) There is no advantage for the gametophyte to grow tall
because gametes must be produced near the ground where
the water needed for their free-swimming sperm is most
likely to be found.
D) Haploid organisms are incapable of developing vascular
tissues such as xylem and phloem. ...... ANSWER .......
C
