What we eat (our environment) and genetic variables come together in epigenetics.
Describe epigenetics.
A branch of genetics called epigenetics investigates how variations in the environment might affect how genes are expressed.
DNA methylation, histone alterations, and non-coding RNA pathways are examples of epigenetic mechanisms.
In conclusion, epigenetics is the fusion of genetics and environment.
What is true of all organisms in the kingdoms Protista, Plantae, Fungi, and Animalia?
A. They are multi-celled.
B. They are photosynthetic.
C. They have cells that contain membrane-bound organelles.
D. They contain cells that lack membrane-bound organelles.
Answer:
Radioactive phosphorus (32P) was present inside the host bacteria.
Explanation:
Hershey and Chase's experiment provided evidence that DNA carries genetic information. Alfred D. Hershey and Martha Chase (1952) used radioactive phosphorus (32P) and radioactive sulfur (35S). They infected the cells of the bacteria <em>E. coli </em>with the T2 bacterial virus (bacteriophage). They observed the presence of radioactive phosphorus-containing DNA of the viral particle inside the infected bacterial cells.
On the other hand, the sulfur-containing protein of the viral coat was not detected inside the infected bacterial cells. This proved that the viral DNA enters the host cell and carries genetic information for viral replication.
Answer:
Angular speed of the bacteria motor is 1447rad/s
t = 4.342 × 10^-3 seconds
Explanation:
Hint: Do you remember circular motion in physics???
Okay, let's go
Given:
radius of 1.61 10-8 m
tangential speed at the rim of 2.33 10-5 m/s
Let's recall that angular velocity
ω = Vt/r
Where,
Vt = 2.33 10-5 m/s
r = 1.61 10-8 m
ω = ?
ω = 2.33 ×10-5 m/s = 1447rad/s
1.61 ×10-8 m
Angular speed of the bacteria motor is 1447rad/s
Let's find the elapsed time too
Since The angular velocity is said to be constant, there will be no acceleration (a = 0)
Using:
θ = ωot + (1/2at^2)
t = θ/ωo
(θ = 1 revolution or 2π rad, ωo = 1447rad/s)
t = (2π rad)/(1447 rad/s)
t = 4.342 × 10^-3 seconds
A) Blades
Hope this helps
