Which term describes how fast work is done?

why is tetracycline selectively toxic against bacteria Eukaryotic cells will enzymatically destroy the drug. Eukaryotic cells wi

IrinaVladis [17]

Answer:

The correct answer is The drug binds to the 30S small ribosomal subunit eukaryotes have 40S small sub unit.

Explanation:

Tetracycline belongs to broad spectrum antibiotic.Tetracycline is named so because it contain a derivative of four hydrocarbon rings.

Tetracycline act by inhibiting the protein synthesis process in prokatotes by binding to the small ribosomal subunit also called 30S subsunit and blocks the binding of amino acyl tRNA to the A site or attachment site of ribosome.

As eukaryotes contain 40S ribosomal subunit,it becomes difficult for tetracycline to bind with 40S ribosomal subunit of eukaryotes.

6 0

3 years ago

Surface area is an important factor in limiting cell growth because

julia-pushkina [17]

Surface area is an important factor in limiting cell growth because

a. the cell can burst if the membrane becomes too large.

b. materials cannot enter the cell if the surface is too large.

c. the cell may become too large to take in enough food and to remove enough wastes.

d. waste products cannot leave the cell if the cell is too small.

Answer:

c. the cell may become too large to take in enough food and to remove enough wastes.

Explanation:

The exchange of substances with surroundings is done by cells by the process of diffusion. The rate of diffusion of substances requires the presence of a higher surface area than volume. As the cells become larger, their surface area is reduced with respect to the volume. Therefore, larger cells can not support the diffusion of substances in and out as required for its proper functioning. If cells are allowed to grow continuously, they will not be able to intake the requires materials such as food and to release the waste outside.

6 0

3 years ago

WILL GIVE A BRAINLEST

wariber [46]

It’s B. “It was doubled...”

Hope this helps... ^^

4 0

3 years ago

Read 2 more answers

Sayyid drew a diagram to compare the gravitational and

Jlenok [28]

Gravitational: A.is attractive only

Electromagnetic: C.attracts and repels

Both: D.has an infinite range

Explanation:

The two forces mentioned in this problem are:

- Gravitational force: this force is the force that is exerted between any object with mass. The magnitude of the force is given by

$F=G\frac{m_1 m_2}{r^2}$

where

G is the gravitational constant

m1 and m2 are the masses of the two objects

r is the distance between the objects

This force is always attractive and it has an infinite range.

- Electromagnetic force: this is the force exerted between electrically charged objects. The magnitude of the force is given by

$F=k\frac{q_1 q_2}{r^2}$

where

k is the Coulomb's constant

q1 and q2 are the charges of the two objects

r is the distance between them

This force is attractive when the charges have opposite sign and repulsive when they have the same sign. It also has an infinite range.

Therefore, we can conclude that:

Gravitational: A.is attractive only

Electromagnetic: C.attracts and repels

Both: D.has an infinite range

Learn more about gravitational and electromagnetic force:

brainly.com/question/1724648

brainly.com/question/12785992

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

5 0

3 years ago

Read 2 more answers

Hemophilia is a rare recessive genetic disorder in which the recessive version of the gene does not produce blood-clotting facto

erica [24]

Answer:25 , 0

Explanation:

XX©(mother being the carrier as her father was hemophilia- females can only be carrier of hemophilia ) when crossed with normal father produces offspring XX©, XY, XY©, XY. Therefore chances of boy being hemophilia=(1/4)*100=25.

Chances of girl being hemophilia= 0.

4 0

3 years ago