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vladimir2022 [97]
3 years ago
9

I need help please..

Biology
2 answers:
Scorpion4ik [409]3 years ago
4 0

Answer:

i think its number 4

Ugo [173]3 years ago
3 0
I think it’s the last one 4
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Cisplatin an antitumor drug interact with DNA____________
Strike441 [17]

Answer:

B

Explanation:

An alkylating agent adds an alkyl group to the DNA strand of a specific cell group highly prone to being cancerous. This action is exactly what Cisplatin does by disrupting DNA replication (mitosis) for cancerous cells by inserting itself into a DNA strand.

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3 years ago
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which best describes transduction in bacteria? A:Bacteria transfer DNA with bacteriophages B:Bacteria inject DNA into other cell
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Bacteria transferring DNA with a bacteriophage and bacteria taking DNA from their environment both best describe transduction in bacteria.
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3 years ago
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A colleague gives you two tubes containing membrane fractions from an animal cell lysate. One tube contains the plasma membrane
OLga [1]

Answer:

B) a higher protein to lipid ratio.

Explanation:

The cell membrane of eukaryotes is known to be a phospholipid bilayer with embedded proteins.  This implies that the first tube will contain a higher amount of lipids.

The membrane of the mitochondria is slightly different from the cell membrane in which its protein to lipid ratio is higher, containing a large number of integral proteins.

6 0
3 years ago
What is the pH if 20 mL of pH = 2 solution is diluted to a final volume of 600 mL?
Mashutka [201]

Explanation:

Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge.  pH measures how basic or acidic a water-based solutions are, with a formula for pH is

pH = -log[H+].

...where pH is -base 10 log of the concentration of hydrogen ions within the solution.

Initial volume= 20 mL

Final volume= 600 mL

# of dilutions= \frac{600}{20} = 30

for a pH 2= [H+]= 10^{=2}

∴ [H+]=  \frac{10^{-2}}{30} = 3.333 * 10^{-4}

and pH is an antilog of [H+]= - log \frac{10^{-2}}{30} = 3.333 * 10^{-4}

∴pH = 3.47

Learn more about pH at brainly.com/question/4981491

Learn more about pKA at brainly.com/question/11062486

#LearnWithBrainly

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What term is used to describe a system that loses energy to objects that are not part of the system?
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Answer:

open

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