bio principles unit 3 Questions and Correct Answers | Latest Update
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Course
Bio
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Bio
what must cells do in order to reproduce and perpetuate the species
reproduce
cell reproduction involves
mitosis and cytokinesis
cells that evolve through mitosis and cytokinesis are
identical
In the cells of some organisms, mitosis occurs without cytoki-nesis. This will result in...
Best Grades | Must Pass | Latest Update | Correct Answers | 2024/ 2025
bio principles unit 3 Questions and Correct
Answers | Latest Update
what must cells do in order to reproduce and perpetuate the species
reproduce
cell reproduction involves
mitosis and cytokinesis
cells that evolve through mitosis and cytokinesis are
identical
In the cells of some organisms, mitosis occurs without cytoki-nesis. This will result in
cells with more than one nucleus.
meiosis is a form of sexual reproduction that involves
species that reproduce sexually
meiosis scrambles the genetic information from both of the parents and
reduces the chromosome number by ½ to produce eggs and sperm.
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-insures variation
chromosomes
-a cellular structure carrying genetic material.
-found in the nucleus of eukaryotic cells
-each chromosome consists of one very long DNA molecule and associated proteins
-chromosome=dyad; two chromatid when duplicated
somatic cells
-any cell in a multicellular organism except a sperm, or egg or their
precurser
gametes
-a haploid reproductive cell
-egg or sperm
-unite during sexual reproduction to produce a diploid zygote
the only haploid cells we have in our bodies are
gametes
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at fertilization, the full complement of paired chromosomes
is restored
mitosis
-division and replication of the nucleus into two identical nuclie
-can occur by itself, but usually involves cytokinesis
-conserves chromosome number by allocating replicated chromosomes to each of the daughter
uncle
-PMAT
cell reproduction
cell division, involving cytokinesis and typically mitosis
reduction of chromosomes
reducing the number of chromosomes is abs olutely essential in reproducing
species
a sexual reproduction
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reproduction with only one individual by budding or by the division of a
single cell or the entire organism into two or more parts.
What is the advantage of sexual reproduction over asexual reproduction?
-sexual reproduction offers more variation and offspring that are more
genetically unique
do bacteria undergo mitosis?
No-(mitosis is duplication and division of the nucleus)
-bacteria undergo BINARY FISSION
prokaryotic cells are
less complicated
Is cell reproduction/division synonymous with mitosis?
No. Mitosis is the division of the nucleus, mitosis can occur without cell
division
do all cells divide after they are produced?
no-muscle tissue/neurons do not divide, as well as liver
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