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2 years ago

The Greek scientist Galen theorized that:

Biology

2 answers:

dimulka [17.4K]2 years ago

6 0

Answer:

A. Food was turned into blood, and when it reached the heart it was mixed with air to make 'spirit.'

Explanation:

Galen believed a theory of pneuma. That is, he believed that blood contains "vital spirits" released into it by the brain.

Svetllana [295]2 years ago

5 0

The answer is A. food was turned into blood

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Why do we group artworks with similar characteristics into periods or styles?

fgiga [73]

We group artworks with similar characteristics into periods or styles because it is easiest to do it that way - this way we can find common characteristics in these literary/artistic eras, and name them. For example, the Renaissance had a distinct style, which differs greatly from that of Romanticism.

7 0

3 years ago

Read 2 more answers

A substance that speeds up the rate of a chemical reaction is called

maw [93]

Answer:

It is called An enzyme

6 0

3 years ago

How many possible open reading frames (frames without stop codons) are there that extend through the following sequence? 5'... C

fenix001 [56]

Answer:

There are 4 reading frames without stop codons.

Explanation:

1) To find the possible reading frames you need to separate your sequence in codons (trios) for the 5'-> 3' sense, first, excluding the first nucleotide, then excluding 2 nucleotides and then not excluding nucleotides.

5'... C TTA CAG TTT ATT GAT ACG GAG AAG G... 3' NO STOP CODON

5'... CT TAC AGT TTA TTG ATA CGG AGA AGG... 3' NO STOP CODON

5'... CTT ACA GTT TAT TGA TAC GGA GAA GG... 3'

2)Then you find the complementary sequence (which you already have)

3'... GAA TGT CAA ATA ACT ATG CCT CTT CC... 5'

3'... GA ATG TCA AAT AAC TAT GCC TCT TCC... 5'

3'... G AAT GTC AAA TAA CTA TGC CTC TTC C... 5'

3) Next, you have to obtain the reverse complementary

CCT TCT CCG TAT CAA TAA ACT GTA AG NO STOP CODON

CC TTC TCC GTA TCA ATA AAC TGT AAG NO STOP CODON

C CTT CTC CGT ATC AAT AAA CTG TAA G

4)Now you need to find start (AGT in terms of DNA) and stop codons(TAA, TAG, TGA, also in terms of DNA), in 5->3 and de reverse complementary.

As you can see, you have for open reading frames that lack of stop codon, unfortunately, they also lack of AGT, the start codon.

I added a table where you can find thestart and stop codons as well as the proteins that they translate to in terms of RNA.

I hope you find this information interesting and useful, good luck!

8 0

3 years ago

17)

n200080 [17]

As white light passes through a prism, the light is separated into the different colours of light that we see and this is called the visible spectrum. Each colour of light has a different wavelength. The wavelength is inversely proportional to the energy of that light. As the wavelength increases, the energy decreases and vice-versa. The relationship is:

E = h/λ, E is energy, h is Planck's constant, and λ is the wavelength.

Therefore, the answer is B) different amounts of energy in white light.

8 0

3 years ago

A mutation in the operator region of the trp operon can prevent the trp repressor from binding to this operator. When these muta

Brilliant_brown [7]

Answer:

d. Tryptophan would bind to the repressor

Explanation:

However,the repressor would not be able to bind to the operator and switch off transcription.The cell would still be making tryptophan even though it is being supplied by the medium in which it is growing.This is a waste of energy.

4 0

3 years ago