Bio 205 Exam 1 Verified A+
basic units of life that compose all living things ️Cells
characteristics shared by all cells ️-Cells are composed of 4 major macromolecules -Genetic material is carried and stored in the form of DNA -DNA is transcribed into RNA and RNA is translated into proteins...
basic units of life that compose all living things ✔️Cells
characteristics shared by all cells ✔️-Cells are composed of 4 major macromolecules
-Genetic material is carried and stored in the form of DNA
-DNA is transcribed into RNA and RNA is translated into proteins
-Their appearance, behavior, and function is dictated by proteins
-They reproduce on their own
-Respond to stimuli
-Adapt to their environment
-Are highly organized
-Maintain a constant internal environment
How are prokaryotes similar to chloroplast and mitochondria? ✔️-Contain their own DNA
-Reproduce on their own
How might an early anaerobic eukaryote have benefited from taking up a bacterium? ✔️Use oxygen to
produce energy
Use sunlight to produce food molecules
How did the engulfed bacteria/mitochondria benefit from being taken up by an early anaerobic
eukaryote? ✔️Engulfed bacteria live in the safe environment of the early eukaryotic cell
Largest (9) to Smallest (1)
_____ adenine
_____ x-chromosome
, _____ Phage
_____ tRNA
_____ sperm
_____ coffee bean
_____ sesame seed
_____ mitochondria
_____ E.coli bacterium ✔️9- coffee bean
8- sesame seed
7- sperm
6- X chromosome
5- mitochondria
4- E. coli
3- phage
2- tRNA
1- adenine
Cell ___________ fits ____________. ✔️structure, function
Four methods to lysing cells ✔️-High frequency sound lyses cells
-Mechanical force shears cells
-Detergent lyses cells by puts holes in the plasma membrane
-Cells forced through a small hole using high pressure break open
What is the term used to describe the thick soup of cell extract produced when cell are broken open?
✔️homogenate
What is the technique that separates a homogenate into different parts? ✔️centrifugation
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