LSUE BIOLOGY 1001 EXAM QUESTIONS WITH CORRECT
ANSWERS | LATEST 2026/2027 UPDATE | GRADED A+ | 100%
VERIFIED SOLUTIONS.
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 - ANSWER B) density dependent inhibition
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 - ANSWER B) cytokinesis
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 - ANSWER
B) The organism must be able to control the timing and rate of cell division
in different parts of its body
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 - ANSWER D) a similar but
not identical combination of genes
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. - ANSWER A) undergoing cytokinesis
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 - ANSWER B) can reveal
alterations in chromosome number
At a chiasma, two____are attached to each other
A) homologous or non sister chromatids
B) homologous or sister chromatids
C) non homologous chromosomes
D) daughter cells - ANSWER A) homologous or non sister chromatids
Asexual reproduction requires____individuals(s)
A) 0
B) 1
C) 2
D) 3 - ANSWER B) 1
, Mendel's law of independent assortment states that
A) chromosomes sort independently of each other during mitosis and meiosis
B) independent sorting of genes produces polyploid plants under some
circumstances
C) each pair of alleles segregates independently of the other pairs of alleles
during gamete formation - ANSWER C) each pair of alleles segregates
independently of the other pairs of alleles during gamete formation
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 -
ANSWER A) formation of a cell plate
Which of the following statements regarding genetic testing is false?
A) genetic testing before birth requires the collection of fetal cells
B) carrier testing helps determine if a person carries a potentially harmful
disorder
C) the screening of newborns can catch inherited disorders right after birth D)
most human genetic diseases are treatable if caught early - ANSWER D)
most human genetic diseases are treatable if caught early
All the offspring of a cross between a black eyed mendelian and an orange eyed
mendelian have black eyes. What is the expected phenotypic ration of a cross
between two orange eye mendelians?
A) 3 black eye: 1 orange eye
B) 0 black eyed: 1 orange eyed
C) 1 black eyed: 3 orange eyed
D) 1 black eyed: 0 orange eyed - ANSWER B) 0 black eyed: 1 orange eyed
ANSWERS | LATEST 2026/2027 UPDATE | GRADED A+ | 100%
VERIFIED SOLUTIONS.
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 - ANSWER B) density dependent inhibition
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 - ANSWER B) cytokinesis
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 - ANSWER
B) The organism must be able to control the timing and rate of cell division
in different parts of its body
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 - ANSWER D) a similar but
not identical combination of genes
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. - ANSWER A) undergoing cytokinesis
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 - ANSWER B) can reveal
alterations in chromosome number
At a chiasma, two____are attached to each other
A) homologous or non sister chromatids
B) homologous or sister chromatids
C) non homologous chromosomes
D) daughter cells - ANSWER A) homologous or non sister chromatids
Asexual reproduction requires____individuals(s)
A) 0
B) 1
C) 2
D) 3 - ANSWER B) 1
, Mendel's law of independent assortment states that
A) chromosomes sort independently of each other during mitosis and meiosis
B) independent sorting of genes produces polyploid plants under some
circumstances
C) each pair of alleles segregates independently of the other pairs of alleles
during gamete formation - ANSWER C) each pair of alleles segregates
independently of the other pairs of alleles during gamete formation
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 -
ANSWER A) formation of a cell plate
Which of the following statements regarding genetic testing is false?
A) genetic testing before birth requires the collection of fetal cells
B) carrier testing helps determine if a person carries a potentially harmful
disorder
C) the screening of newborns can catch inherited disorders right after birth D)
most human genetic diseases are treatable if caught early - ANSWER D)
most human genetic diseases are treatable if caught early
All the offspring of a cross between a black eyed mendelian and an orange eyed
mendelian have black eyes. What is the expected phenotypic ration of a cross
between two orange eye mendelians?
A) 3 black eye: 1 orange eye
B) 0 black eyed: 1 orange eyed
C) 1 black eyed: 3 orange eyed
D) 1 black eyed: 0 orange eyed - ANSWER B) 0 black eyed: 1 orange eyed
