LSUE BIOLOGY 1001 FINAL EXAM 2025
LATEST ACTUAL EXAM 100
QUESTIONS WITH VERIFIED
CORRECT ANSWERS. A+ GRADE
ASSURED
1. How many generations does it take to develop a new plant species by
polyploid?
A) One
B) Two
C) Ten
D) About twenty: a) one
2. Both mitosis and meiosis are preceded by
A) Prometaphase
B) Interphase
C) Prophase
D) Telophase: b) interphase
3. Which of the following statements regarding the cell-cycle control system
is false?
,A) The cell-cycle control system receives messages from outside the cell
that influence cell division
B) The cell-cycle control system triggers and controls major events in the
cell cycle
C) The cell-cycle control system includes three key checkpoints to
complete a cell cycle
D) The cell-cycle control system operates independently of the growth
factors-: d) the cell-cycle control system operates independently of the growth
factors
4. Cancer is not usually inherited because
A) the chromosomal changes in cancer are usually confined to somatic cells
b) people with cancer usually die before reproducing: a) the chromosomal
changes cancer are usually confined to somatic cells
5. Sister chromatids are
A) Found right after a cell divides
B) Joined together at a centromere
C) Made only of dna
D) Unique to prokaryotes: b) joined together at a centromere
6. When animal cells are grown in a petri dish, they typically stop diving
once they have formed a single, unbroken layer on the bottom of the dish.
This arrest of division is an example of
A) Cell constraint
B) Density-dependent inhibition
C) Cell division repression
,D) Growth factor desensitization: b) density dependent inhibition
7. The process by which the cytoplasm of a eukaryotic cell divides to produce
two cells is called
A) Mitosis
B) Cytokinesis
C) Binary fission
D) Telophase: b) cytokinesis
8. Which of the following must occur for a plant or animal to grow and
develop normally?
A) The organism must receive a supply of the appropriate hormones from its
parents
B) The organism must be able to control the timing and rate of cell division
in different parts of its body
C) Sufficient light must be available to stimulate cell division
D) Sufficient oxygen must be available to stimulate cell division: b) the
organism must be able to control the timing and rate of cell division in
different parts of its body
9. With the exception of identical twins, siblings who have the same two
biological parents are likely to look similar, but not identical, to each other
because they have
A) Identical chromosomes, but different genes
B) Identical genes but different chromosomes
C) The same combination of traits, but different genes
, D) A similar but not identical combination of genes: d) a similar but not
identical combination of genes
10. Which of the following is a feature of plant cell division that distinguishes
it from animal cell division?
A) Formation of a cell plate
B) Formation of a cleavage furrow
C) Lack of cytokinesis
D) Production of four (rather than two) new cells per mitotic division: a)
formation of a cell plate
11. Looking into your microscope, you spot an unusual cell. Instead of the
typical rounded cell shape, the cell has a very narrow middle separating two
bulging ends. It sort of looks like the number 8! Then you realize that this
cell is
A) Undergoing cytokinesis
B) In the s phase of interphase.
C) In the g1 phase of interphase.
D) In the g2 phase of interphase.
E) About to undergo mitosis.: a) undergoing cytokinesis
12. Karyotyping
A) Shows chromosomes as they appear in metaphase of meiosis ii
B) Can reveal alterations in chromosome number
C) Examines points of crossing over
D) Reveals the presence of cancerous genes: b) can reveal alterations in
chromosome number
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