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3 years ago

A certain bacterial mRNA is known to represent only one gene and to contain about

Biology

1 answer:

Brut [27]3 years ago

4 0

Answer:

C) 30,000

Explanation:

According to the given information, the bacterial mRNA consists of about 800 nucleotides. Three consecutive nucleotides together make one genetic codon which in turn codes for one specific amino acid in the protein encoded by this mRNA.

So, an mRNA with 800 nucleotides will have total 800/3 = 266.67 or 266 genetic codes. The protein encoded by this mRNA would have a total of 266 amino acids.

Given that one amino acid imparts 110 units to the molecular weight of the protein, the protein with 266 amino acids have the molecular weight= 266 x 110 = 29260, that is about 30,000.

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A sand storage tank used by the highway department for winter storms is leaking. As the sand leaks out, it forms a conical pile.

harina [27]

Answer:

Rate of change of volume of the pile $= 54\pi$

Explanation:

Given -

Rate of increase of the base of the pile $= 0.75$ inches per minute

Height of the pile $= 2 *$ the radius of the base

Let "h" be the height of the pile and "r" be the radius of the base.

Then $h = 2* r$

Radius "r" $= 6$ inches

Rate of change of radius i.e

$\frac{dr}{dt} = 0.75$

Volume of conical pile

$\frac{\pi }{3} * r^2 * h\\= \frac{\pi }{3} * r^2 * 2 * r\\= \frac{\pi }{3} *2* r^3$

Change in volume of conical pile

$\frac{dV}{dt} = \frac{dr}{dt} * \frac{6* \pi * r^2 }{3}$

Substituting the value of rate of change of radius, we get -

$\frac{dV}{dt} = 2 * \pi * (6^2) * (0.75)\\\frac{dV}{dt} = 54 \pi$

Rate of change of volume of the pile $= 54\pi$

8 0

3 years ago

What type of bonds are found between the 5-Carbon sugar of one nucleotide and the Phosphate group of the next?

defon

Explanation:

Phosphodiester bonds.

7 0

3 years ago

Improved functional health can be a positive influence on which health risk/

Valentin [98]

<span>An improved functional health can have a positive influence on physical inactivity for this is a modifiable risk factor. The prevalence of improve functional health is higher than physical inactivity compare to other risk factors because this will encourage an individual to have a physical activity such as biking, swimming or any routine physical fitness. </span>

4 0

3 years ago

Why do some volcanic eruptions consist mostly of lava flows, while others are explosive and have no flow?

Reika [66]

<span>effusive:flow-low viscosity
explosive:high viscosity</span>

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3 years ago

What are cells that produce new cartilage matrix called?.

Nastasia [14]

Answer:

The stem cells differentiate into chondroblasts. 3. These chondroblasts, located at the periphery of the old cartilage, begin to produce and secrete new cartilage matrix. As a result, they push apart and become chondrocytes, each occupying its own lacuna.

Explanation:

4 0

2 years ago