IB Biology 1.5 Exam Questions & Answers.
Endosymbiotic theory - CORRECT ANSWER a theory that some eukaryotic organelles, such as mitochondria and chloroplasts, originated as free-living prokaryotes that invaded primitive eukaryotic cells. Allowed growth of smaller cells in a cytoplasm, through...
Endosymbiotic theory - CORRECT ANSWER a theory that some eukaryotic organelles, such as
mitochondria and chloroplasts, originated as free-living prokaryotes that invaded primitive eukaryotic
cells. Allowed growth of smaller cells in a cytoplasm, through endocytosis, and the rapid replication they
could persist indefinitely inside the large cells.
It also states that mitochondria were once free living prokaryotic organisms that had developed the
process of aerobic cell respiration and the previously mentioned process persisted so that mitochondria
are inside the eukaryotic cells today. Organelles that are found in eukaryotic cell indicates that they have
features that they used to exist in their own right.
Genetic code - CORRECT ANSWER a nearly universal sequence of nucleotides in DNA that determines
the specific amino acid sequence in the synthesis of proteins.
Louis Pasteur - CORRECT ANSWER French scientist that proved, among other things, that the emergent
growth of bacteria in nutrient broths is due to biogenesis, not spontaneous generation.
Spontaneous generation - CORRECT ANSWER old theory that believed in the formation of living
organisms from non-living matter.
Sterilization - CORRECT ANSWER technique used for the elimination of microbiological organisms to
achieve a sterile microbial environment.
Evidence from Pasteur experiment refuted idea of spontaneous generation. - CORRECT ANSWER Under
favourable conditions, the broth that was inside the flasks was in contact with air which it had been
suggested was needed for spontaneous generation, yet no spontaneous generation occurred.
It shows that the glass swan necks prevented organisms from air getting into the broth or other liquids
and that no organisms appeared spontaneously.
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 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 Nursewendo. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.98. You're not tied to anything after your purchase.
