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3 years ago

What sequence on a dna molecule indicates where rna polymerase should begin transcription?

1 answer:

8 0

RNA polymerase binds to the promoter sequence on the DNA molecule.
The promoter has a TATA box, which binds with the TBP (TATA binding protein) that is in the RNA polymerase multiprotein complex. The TSS (transcription start site) indicates where RNA polymerase can start transcription.

You might be interested in

_______ cause(s) populations to change over time.

vekshin1

The answer is B., Natural Selection.

Weather certainly doesn't change populations, and genes only caused individuals in a population to be slightly ( genetically-wise ) different from the others. It does cause change, but not change in the whole population over time.
Natural disasters don't change the populations over time either. Natural disasters only caused change in their environment, at most.

So, the only answer left is natural selection, and it makes sense too!
Natural selection is the process where the individuals with better traits suited to survive in that specific environment live on and give those good traits to their offspring.
The individuals with less suited traits to survive will die out, and will not be given an opportunity to reproduce and pass on their less suited traits, so over time, the population will increase of individuals with better suited traits to survive and the individuals with less suited traits will eventually die out, therefore making the entire population change.

Hope I helped you!

3 0

3 years ago

What are the main processes involved in making proteins?

trasher [3.6K]

Answer:

translation and transcription

Explanation:

no. 1 is to do with energy in plants

no. 2 is cell reproduction

no. 3 is cell evolution

5 0

3 years ago

A 10-7 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is

marishachu [46]

Answer:

$66 * 10^8$ CFU/mL

Explanation:

Given -

a) Number of colonies of bacteria is equal to $66$

b) Total volume of the solution is equal to $0.1$ mL

c) Dilution factor is equal to $10^{-7}$

As we know that

CFU/mL $= \frac{N * DF}{V}$

Where N is the number of bacterial colonies, DF is the dilution factor and V is the volume

Substituting the given values in above equation, we get -

CFU/mL $= \frac{66* 10^7}{0.1} \\= 66*10^8$

5 0

3 years ago

How many different codons can code for the amino acid tryptophan (Trp)?

Minchanka [31]

The chart very nicely lays out the amino acid each codon corresponds to. You're looking for "trp" in the chart, which only appears once, beside the UGG codon. Therefore, only one codon codes for tryptophan.

7 0

3 years ago

Read 2 more answers

1. The diagram below represents a cell and several

Ray Of Light [21]

Explanation:

(3) active transport

The molecules would be moving against their concentration gradient from a region of low concentration to a region of high concentration.

While cells facilitate the transport of molecules via movement across the cell membrane, there many different mechanisms. These include passive diffusion, facilitated diffusion, and passive transport. However some very large molecules require specialized type of active transport, which requires energy in the form of ATP, in order to move substances across the membrane against their concentration gradient.

Active transport is a mediated process that requires an energy input and the use of specialized membrane proteins to move against the concentration gradient. These proteins require energy in the form of adenosine triphosphate or ATP in order to facilitate necessary conformational changes to the large protein molecules to alter the spatial location of the molecule. For instance, with Na+, K+ pumps in cell membranes.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

#LearnWithBrainly

8 0

3 years ago