Guide 2025/26| Verified Correct Answers
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The creation of genetically identical offspring by a single parent, without the
participation of sperm and egg, is called
a) spontaneous generation
b) regeneration
c) sexual reproduction
d) asexual reproduction - ✅✅-d
asexual reproduction requires individuals(s), whereas sexual
reproduction requires individuals(s)
a) 1;2
b) 1;1
c) 2;1
d) 2;2 - ✅✅-a
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) a similar but not identical combination of genes
b) identical genes but different chromosomes
c) the same combinations of traits but different genes
d) identical chromosomes but different genes - ✅✅-a
which of the following statements regarding prokaryotes is false?
a) most prokaryotes reproduce by binary fission
b) prokaryotic cells are generally smaller and simpler than eukaryotic cells
c) in prokaryotes, daughter chromosomes are separated by an active
movement away from each other and the growth of a new plasma
membrane between them
d) prokaryotic chromosomes are more complex than those of eukaryotes -
✅✅-d
eukaryotic chromosomes differ from prokaryotic chromosomes in that they
,b) unique to prokaryotes
c) made only of DNA
d) joined together at a centromere - ✅✅-d
which of the following helps maintain the structure of chromosomes and control the
activity of genes?
a) centromeres
b) the nuclear membrane
c) ribosomes
d) proteins - ✅✅-d
eukaryotic cells spend most of their cell cycle in which phase
a) prophase
b) telophase
c) metaphase
d) interphase - ✅✅-d
the genetic material is duplicated during
a) the s phase
b) the mitotic phase
c) G2
d) G1 - ✅✅-a
which of the following occurs during interphase?
a) separation of newly formed DNA to opposite ends of the cell
b) cytokinesis
c) cell growth and duplication of the chromosome
d) a reduction in the size of the nuclear membrane - ✅✅-c
the process by which the cytoplasm of a eukaryotic cell divides to produce two
cells is called
a) mitosis
b) binary fission
c) cytokinesis
d) telophase - ✅✅-c
,d) prophase - ✅✅-d
during which phase of mitosis do the chromosomes line up on a plane equidistant
from the two spindle poles
a) anaphase
b) prophase
c) metaphase
d) telophase - ✅✅-c
at the start of the mitotic anaphase,
a) the chromatid DNA replicates
b) the centromeres of each chromosomes come apart
c) nuclear envelopes begins to form around the chromosomes
d) equivalent and complete collections of the chromosomes have reached the two
poles - ✅✅-b
during which phase of mitosis does the nuclear envelope re-form?
a) prophase
b) telophase
c) anaphase
d) metaphase - ✅✅-b
which of the following is a feature of plant cell division that distinguishes it from
animal cell division?
a) production of four (rather than two) new cells per mitotic division
b) formation of a cell plate
c) lack of cytokinesis
d) formation of a cleavage furrow - ✅✅-b
when animal cells are grown in a petri dish, they typically stop dividing 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) growth factor of desensitization
c) cell division repression
d) density-dependent inhibition - ✅✅-d mature
, c) cease dividing after a predetermined number of cell generation
d) become cancerous more easily than other cell types - ✅✅-b
which of the following statements regarding the cell cycle control system is false?
a) the cell cycle control system triggers and controls major events in the cell
cycle
b) the cell cycle control system received messages from outside the cell that
influence cell division
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
a benign tumor differs from a malignant tumor in that a benign tumor
a) never causes health problems
b) spreads from the original site
c) is cancerous
d) does not metastasize - ✅✅-d
which of the following shows the greatest promise as a caner chemotherapy
agent?
a) a drug that provents mitotic spindle from forming
b) a drug that prevents tetrad formation
c) a drug that interfers with cellular respiration
d) a drug that prevents crossing over - ✅✅-a
two chromosomes in a nucleus that carry genes controlling the same inherited
characteristics are
a) heterologous chromosomes
b) homologous chromosomes
c) parallel chromosomes
d) complementary chromosomes - ✅✅-b
which of the following statements regarding the function of mitosis is false?
a) mitosis allows organisms to reproduce asexually
b) mitosis allows organisms to repair tissues
c) mitosis allows organisms to generate genetic diversity