what must cells do in order to reproduce and perpetuate the species - answer-reproduce
cell reproduction involves - answer-mitosis and cytokinesis
cells that evolve through mitosis and cytokinesis are - answer-identical
In the cells of some organisms, mitosis occurs without cytoki-nesis. T...
Bio principles unit 3 exam guide graded
A
what must cells do in order to reproduce and perpetuate the species - answer-
✔reproduce
cell reproduction involves - answer-✔mitosis and cytokinesis
cells that evolve through mitosis and cytokinesis are - answer-✔identical
In the cells of some organisms, mitosis occurs without cytoki-nesis. This will result
in - answer-✔cells with more than one nucleus.
meiosis is a form of sexual reproduction that involves - answer-✔species that
reproduce sexually
meiosis scrambles the genetic information from both of the parents and - answer-
✔reduces the chromosome number by ½ to produce eggs and sperm.
-insures variation
chromosomes - answer-✔-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 - answer-✔-any cell in a multicellular organism except a sperm, or
egg or their precurser
gametes - answer-✔-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 - answer-✔gametes
at fertilization, the full complement of paired chromosomes - answer-✔is restored
mitosis - answer-✔-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 - answer-✔cell division, involving cytokinesis and typically
mitosis
reduction of chromosomes - answer-✔reducing the number of chromosomes is
absolutely essential in reproducing species
a sexual reproduction - answer-✔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? - answer-
✔-sexual reproduction offers more variation and offspring that are more
genetically unique
do bacteria undergo mitosis? - answer-✔No-(mitosis is duplication and division of
the nucleus)
-bacteria undergo BINARY FISSION
prokaryotic cells are - answer-✔less complicated
Is cell reproduction/division synonymous with mitosis? - answer-✔No. Mitosis is
the division of the nucleus, mitosis can occur without cell division
do all cells divide after they are produced? - answer-✔no-muscle tissue/neurons do
not divide, as well as liver
-no need to go to G1, stays at G0
Cell cycle - answer-✔PMAT
-cells go through four stages during cell reproduction
-an ordered sequence of events in the life of a cell
What are the 7 Phases of the Cell Cycle? - answer-✔interphase
g1
s1
g2
mitotic phase
, mitosis
cytokinesis
interphase - answer-✔-phases G1, S, G2
-portion of the cell with main metabolic activity- cellular respiration,
photosynthesis, making protein
-"the resting phase" but not really at rest
-no dividing
-accounts for 90% of cell cycle
-produces a lot of ATP
condition of DNA in interphase - answer-✔there are the same number of
chromosomes in G1 (46) and G2 (46), S (92)
chromatin - answer-✔-loosley scattered arrangement of chromosomes in interphase
-DNA-protein complex found in eukaryotic cells, condition of dna during
interphase
when the cell is not deviding, - answer-✔chromatin exists in its dispersed form.
-very long, thin fibers that are not visible with a light telescope
g1 - answer-✔-the first gap phase
-site of active growth and metabolism
-unduplicated DNA present
-this is a gap between metabolic and duplication
-final destination for adult cells:neurons and muscles
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CleanA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
