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sladkih [1.3K]
3 years ago
6

What are the components of a mixture? Define each and give an example

Biology
1 answer:
Molodets [167]3 years ago
6 0
You mixing stuff pppppppoopopppppppppp
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What is an agricultural subsidy?
jenyasd209 [6]

Answer:

A sum of money paid to farmers and agribusinesses by the government to

supplement their income and manage crop supply

7 0
2 years ago
In which ways can the individual steps of this process be regulated to lead to higher or lower expression of a particular protei
Dahasolnce [82]

Answer:

There are many points at which eukaryotic gene expression can be controlled, through pretranscriptional control, transcriptional control, and posttranscriptional control

Explanation:

The pretranscriptional control determines the accessibility of chromatin to the transcription machinery. It is affected by supercoiling and methylation. It is also known as epigenetic regulation, and it does not depend on the sequence but on the conformation of the DNA.

While transcriptional control determines the frequency and / or speed of transcription initiation through the accessibility of the start sites, the availability of transcription factors and the effectiveness of promoters.

The post-transcriptional control is the one that is exercised once the transcript has finished synthesizing. It can be of several types:

• Maturation control: As the RNA adjustment can be made.

• Transport control: Most RNA has to go out to the cytoplasm to perform its function. For this they have to cross the pores of the nuclear membrane, where you can select the RNAs that will be transported and those that will not.

• Stability control: The half-life of RNA can be regulated by the expression of RNAs or mRNA stabilizing proteins in the cytoplasm.

• Translational control: It is exercised on the frequency with which the mRNAs begin to be translated. It can also affect the frequency with which proteins mature and the availability of enzymatic effectors.

6 0
3 years ago
Escherichia coli infections Select one: a. are often transmitted by fecal contaminated water and food. b. include EIEC that dest
cestrela7 [59]

Answer:

a. are often transmitted by fecal contaminated water and food.

Explanation:

<em>Eschericia coli</em> belongs to a group of bacteria generally referred to as fecal coliforms because they are of fecal origin.

<em>Hence, their common mode of transmission is through fecal to oral routes such as fecal contaminated food, water and any other substance that passes through the mouth.</em>

<em>E. coli </em>infections can be treated using suitable antibiotics.

The correct option is a.

5 0
3 years ago
All cells contain ion pumps that use the energy of ATP hydrolysis to pump ions across the plasma membrane. These pumps create an
Alika [10]

Answer with explanation:

a. 3 sodium ions will move from inside to outside while 2 potassium ion will mover from outside to inside. This movement occur to maintain the gradient across the membrane

b. due to ion movement the concentration of sodium ions become higher outside the cell while the concentration of potassium ion will decrease

c. Due to 3 sodium ion movement outer change became positive (+).

d. due to ion movement the concentration of sodium ions become lower inside the cell while the concentration of potassium ion will increase inside

e. this change results in decrease in charge therefore charge inside the membrane becomes negative (-). See Solved Figure Attachment.

3 0
3 years ago
A substance continually produced in our cells that, over time, may cause damage to DNA and other important cell structures is kn
Len [333]
<span>A. free radical 

</span>A substance continually produced in our cells that, over time, may cause damage to DNA and other important cell structures is known as a free radical.

NOT:
B. functional food 
<span>C. direct additive </span>
<span>D. indirect additive</span>
7 0
3 years ago
Read 2 more answers
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