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Nataly [62]
3 years ago
11

Giving brainliest !!!!!!!!!!!!!!!!!!!!!!!! pls help.

Biology
2 answers:
marusya05 [52]3 years ago
5 0

Answer:

Movable Pulley

Explanation:

The movable can only move up and down.

zlopas [31]3 years ago
4 0
Fixed and movable:)
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A template dna strand contains the sequence 3'-atgctgac-5'. the corresponding sequence in the rna transcript is:
V125BC [204]
The corresponding sequence in the RNA transcript is 5'-UACGACUG-3' . One of the differences between DNA and RNA is the fact that the RNA contains the base uracil instead of thyamine. The base pairing occurs between A and T, and G and C. DNA undergoes the process of transcription in the nucleus to generate RNA, which then undergoes translation (for mRNA) in the cytoplasm to yield proteins. 
5 0
4 years ago
Choose the correct sequence of the prokaryotic operon. A) gene, operator, promoter B) promoter, operator, gene C) operator, prom
Harrizon [31]

Answer:

The correct answer is option B, that is, promoter, operator, gene.

Explanation:

In a prokaryote, just in front of the operator, the promoter is located, and just in front of the structural genes, the operator is located. All these in combination give rise to an operon.  

Any gene, which codes for an enzyme or a structural protein is termed as a structural gene, in the lac operon, a structural gene codes for three distinct kinds of enzymes. A short sequence of DNA is situated just in front of the structural gene, which is known as the operator. An operator functions as a switch for transcription, that is, it monitors whether the process of transcription will take place or not.  

Just in front of an operator, a sequence of a promoter is present, and for the transcription and translation of all the structural genes, the RNA polymerase needs to combine first with the promoter. In case, if no transcription is to take place, then the operator allows the repressor to bind with it and prevent the attachment of RNA polymerase with the promoter. Hence, the correct sequence of a prokaryotic operon is a promoter, operator, and gene.  

4 0
3 years ago
A sample of DNA reveals 30.3% Adenine. How much Guanine is present?
tiny-mole [99]

Answer:

69.7%

Explanation:

Adenine base pairs with thymine

guanine base pairs with cytosine

you need to get to 100%

30.3-100=69.7%

There will be 30.3% or adenine and thymine and 69.7% or guanine and cytosine.

7 0
3 years ago
Brown rabbits have the genotypes BB or Bb. White rabbits have the gene type bb. If two brown rabbits, with the genotypes seen in
Masteriza [31]

Answer:

the answer would probably be 75%

Explanation:

If you do a punnet square it will show the results.

5 0
3 years ago
Read 2 more answers
An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num
Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, I_{min} =  5\times 10^{-13} W/m^{2}

Pupil has a diameter, d = 8.5 mm

                                      = 8.5 x 10^{-3} m

Radius of the eye, r = 4.25 x 10^{-3} m

∴ Area of the eye, A = \pi .r^{2}

                                 = 3.14\times \left ( 4.25\times 10^{-3} \right )^{2}

                                = 5.6\times 10^{-5} m^{2}

Let P_{min} be the minimum number of photons.

Therefore, P_{min} = I_{min} x A

                                              = 5\times 10^{-13} x 5.6\times 10^{-5}

                                             = 2.8\times 10^{-17} W

Thus the minimum number of photons is given by

N_{min}=P_{min}/E

where E = hc/\lambda

             = \left (6.63\times 10^{-34}\times 3\times 10^{8}  \right )/548\times 10^{-9}

            = 3.62\times 10^{-19} J

Therefore, N_{min} = \frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}

                                              = 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

4 0
3 years ago
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