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3 years ago

5 major air pollutants ??

Biology

1 answer:

olganol [36]3 years ago

5 0

Answer:

Ozone (O3)

Nitrogen Oxides (NOx)

Carbon Monoxide (CO)

Sulfur Dioxide (SO2)

Particulate Matter (PM10 and PM2.5)

Explanation:

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What amount of chromosomes will each daughter cell have after mitosis and cytokinesis?

Viefleur [7K]

Answer:

Mitosis is a cell division in which, before the true division, DNA replication takes place, temporarily doubling the number of chromatids. This stages that, at the end of the cell division, daughter cells will have the same number of chromosomes as the parent cell

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3 years ago

PLEASE HELP!!!!!!!!<br> How does respiration differ from cellular respiration (breathing)?

const2013 [10]

Answer:

Breathing or respiration involves the inhale of oxygen into the lungs and exhale of carbon dioxide into the atmosphere. Cellular respiration involves the breakdown of glucose into carbon dioxide and water in living cells which in turn releases energy.

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4 years ago

The antibiotic rifampicin blocks transcription in many bacteria. In the presence of the antibiotic, adding sigma factor has no s

mariarad [96]

Answer:

transcription initiation

Explanation:

Transcription is a process by which genetic information from DNA is used to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently utilized to synthesize a protein by a process called translation. Transcription in prokaryotes has three steps:

1-Initiation: the RNA polymerase is a multisubunit enzyme (holoenzyme) composed of two α, one β, one β’ and one ω and σ subunits (α2ββ’ωσ). This holoenzyme binds to the promoter region of the template DNA strand.

2-Elongation. The sigma σ factor of the holoenzyme is released and the complex and the core enzyme (α2 ββω) moves along the template strand, thereby producing an mRNA sequence

3-Termination. This step can be Rho-dependent, where a protein named "Rho" recognizes the termination site and stop transcription, and Rho-independent (transcription continues until the termination sequence is reached).

In consequence, Rifamycin is likely to block the initiation of transcription because the core RNA enzyme needs to bind the sigma factor (σ) for initiation of transcription in bacteria.

8 0

3 years ago

Which of the following statements regarding the function of mitosis is false?

Tanya [424]

Mitosis allows organisms to generate genetic diversity.

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3 years ago

Three lots with parallel side boundaries extend from the avenue to the boulevard as shown answer

larisa86 [58]

Three lots with parallel side boundaries extend from the avenue to the boulevard as shown in the diagram attached.

Given;
x + y + z = 140 meters

According to the proportion theorem,

$\frac{x}{40} = \frac{y}{30}$

Solving for x, using cross multiplication:

$\frac{x}{1} = \frac{40y}{30}$

Similarly,

x/40 = z/35

solving for z by cross multiplication,

z = 35x/40
z = 7x/8

Now, the third proportions,
y/30 = z/35

Solving for y,

y = 30z/35
y = 6z/7

x + y + z = 140

4y/3 + 6z/7 + 7x/8 = 140

(224y + 144z + 147x)/168 = 140

224y + 144z + 147x = 23520

Substitutoing z = 7x/8,

224y + (144 × 7x/8) + 147x = 23520

224y + 126x + 147x = 23520

224y + 273x = 23520
Now,
Substitute y = 3x/4

(224×3x/4) + 273x = 23520

168x + 273x = 23520

441x = 23520

x = 53.33

Now,
We know that
y = 3x/4
so,
y = 40

And,
z = 7x/8
Z = 46.66

3 0

3 years ago