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3 years ago

Please can someone please answer the question it’s already past due

Biology

2 answers:

Scrat [10]3 years ago

7 0

You’ll have to also provide pics from the article the question is talking about Bc it’s asking for evidence from the article which you didn’t show lol

Julli [10]3 years ago

6 0

You have to give information from the article but you didn’t show that..

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A roofer needs to get a stack of shingles onto a roof. Pulling the shingles up manually uses 1,549 n of force. The roofer decide

AURORKA [14]

Answer:

$3.47$

Explanation:

Mechanical advantage is given by the ratio of output force by input force.

$F_o$ = Output force = $1549\ \text{N}$

$F_i$ = Input force = $446\ \text{N}$

So,

$MA=\dfrac{F_o}{F_i}\\\Rightarrow MA=\dfrac{1549}{446}\\\Rightarrow MA=3.47$

The mechanical advantage of the pulley's is $3.47$ .

5 0

2 years ago

Why does the moon appear to move toward the west in the sky?

True [87]

Not a 100% sure but i believe it’s B

4 0

2 years ago

Bacteria lack RNA-splicing machinery, which means they are unable to splice out introns from eukaryotic genes. To engineer a bac

taurus [48]

Answer:

<em>make a gene from the given mRNA without the introns.</em>

Explanation:

Introns can be described as the non- coding regions of DNA. As they are non- coding, they are spliced out from the mRNA so that only the coding regions can be translated.

If we know a nucleotide sequence, then we can make a gene from it without added the introns. We can consider an mRNA strand and make a complementary strand from it, excluding the intron regions. Then from the DNA produced, we can make an mRNA without the introns and insert it into a bacterium.

8 0

3 years ago

65. In dogs, wire hair (H) is dominant over straight hair (h). Two dogs produce offspring as shown in the Punnett square below.

valentina_108 [34]

About the question:

I failed to find the complete question with the Punnett square, so in the answer and explanation I will propose five options for crosses between dogs with different genotypes, and for each option, I will remark the percent of the offspring that is expected to have wirehair. You just need to look for the option that matches your Punnett Square.

Answer:

Option 1: HH x HH ----> 100% of the progeny is wire-haired, HH
Option 2: HH x Hh---> 100% of the progeny is wire-haired, HH + Hh
Option 3: Hh x Hh --->75% of the progeny is wire-haired, 25% HH + 75% Hh
Option 4: Hh x hh ---> 50% of the progeny is wire-haired, Hh
Option 5: hh x hh ----> 0% of the progeny is wire-haired

Explanation:

You will find the complete explanation in the attached files due to technical problems

Download pdf

5 0

3 years ago

11. Given only the structure of the four nucleobases and the linear structure of D-ribose, draw the following molecules: r(GUCA)

Charra [1.4K]

<h3>Why is RNA the precursor to DNA?</h3>

The speculation that RNA preceded DNA and proteins in evolution. In the earliest cells, pre-RNA molecules could have had mixed genetic, structural, and catalytic features and those features could have progressively been changed with the aid of using RNA.

The presence of the X form withinside the diffraction sample indicated to Franklin that DNA strands have been helical. Each sprint of the X form marks the repetition of atoms, or atomic repeats, in DNA
Chargaff rule: The rule that during DNA there may be constantly equality in amount among the bases A and T and among the bases G and C. (A is adenine, T is thymine, G is guanine, and C is cytosine.) Named for the tremendous Austrian-American biochemist Erwin Chargaff (1905-2002) at Columbia University who found this rule.
The crucial physiological roles performed with the aid of using the nucleic acid precursor rNTP and dNTP molecules in people has come to be obvious because the Nineteen Seventies with the aid of using the popularity of 28 exceptional inborn mistakes of purine and pyrimidine metabolism.