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2 years ago

Which of the following best predicts the most direct effect of exposing prokaryotic cells to streptomycin?

Biology

1 answer:

skelet666 [1.2K]2 years ago

5 0

Answer:

Antibiotics interfere with prokaryotic cell functions. Streptomycin is an antibiotic that affects the small ribosomal subunit in prokaryotes. Which of the following best predicts the most direct effect of exposing prokaryotic cells to streptomycin? Synthesis of polypeptides will be inhibited.

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Prokaryotic cells do not have a distinct nucleus and are missing other organelles. This is a characteristic of which domains?

Anarel [89]

Answer: Eukaryotes

Explanation:

Eukaryotes have membrane bound organelles like nuclei. Arcahea and Prokaryotes don't have memrbane bound organelles

6 0

2 years ago

Arrange the sequence of events for the overall mitochondrial respiratory assembly in the correct order.

kotykmax [81]

Answer:

Option D, 4,2,1, 3

Explanation:

The mitochondrial respiratory chain (MRC) comprises of four membrane bound complexes and it involves the following steps

a) RC complexes (RCC) I and II reduces the RC’s equivalent where RCCI i.e receives electron from the NADH.

b) These electrons are then transferred to the flavin mononucleotide factor and then passed on to the Fe-S embedded cluster .

c) These electron reduces the coenzyme Q to ubiquinol

d) With in the inner mitochondrial membrane (IMM), protons are trans located from IMM to the intermembrane space (IMS)

e) RC complex II then transfer electron from succinate to the cofactor FAD

f) From FAD proton are transferred to the FeS cluster and on the other hand electron move from QH2 to the RC complex III

g) This RC complex III give its electrons to the cytochrome and they are further passes on to the RC complex IV

h) With four redox centers, the terminal RC complex translocate protein by using energy produced in electron transfer thereby converting oxygen into water.

Hence, the correct option is D

5 0

3 years ago

Answer is you brainiest - not joking.

Yuri [45]

Answer:

Explanation:

Without organizing you can go on with the next steps since data alone is worthless but information (organized data) is the most important thing for a scientific investigation.

3 0

3 years ago

In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2

Alisiya [41]

Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

$r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

$r = \frac{1500 - 750}{1995 - 1985} = 750/10 = 75$

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

$r = \frac{D(1995) - D(1885)}{1995 - 1985} = \frac{6 pines/ha - 3pines/ha}{10} = 0.3 pines/ha$

So, on average, each year the number of pines per hectare increases by 0.3

7 0

3 years ago

Name 2 song cardi b song

Anna [14]

Answer:

wap

I like it

Explanation:

why do you need this tho

4 0

3 years ago

Read 2 more answers