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3 years ago

Which is a shared characteristic of all animals?

Biology

2 answers:

Molodets [167]3 years ago

6 0

They are all eukaryotic orgabisns, have a wild nature, they all have a niche, etc.

hram777 [196]3 years ago

4 0

They're all heterotrophs

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Improve the student's model of gas exchange by drawing the missing component.

Vesna [10]

Answer:

capillary

Explanation:

you should draw a capillary to show where gas exchange is occuring

3 0

2 years ago

In a DNA double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one st

notka56 [123]

Answer:

adenine pairs with Thymine and guanine always pairs with cytosine respectively

Explanation:

In DNA nucleotide subunits, there are four nitrogenous bases:

Adenine (A)
Thymine (T)
Cytosine (C)
Guanine (G)

Each of these bases can be divided into two categories: purine bases and pyrimidine bases.

Adenine and guanine are examples of purine bases. This means their structure is a nitrogen-containing six atom ring joined with a nitrogen-containing five atom ring that share two atoms to combine the two rings.

Thymine and cytosine are examples of pyrimidine bases.

Note that RNA replaces thymine with a different pyrimidine base called uracil (U).

The complementary base pairing rule, Chargaff's rule states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.

8 0

4 years ago

Why is e = hv important in pv cell considerations?

Zanzabum

E=hv is an equation important when dealing with light. E refers to the energy of a photon; h is Planck's constant and v is the wavelength. According to this equation, light particles called photons travels in packets of energy. This is important in pv cells because this is the technology used to harness solar energy which is converted to electricity. The amount of energy should be estimated to know the appropriate material of construction of the pv cell to achieve optimum conditions. In this way, the pv cell could maximize the sun's energy.

8 0

3 years ago

Trinucleotide repeat disorders are hereditary diseases caused by mutant genes containing an increased number of repeats of a DNA

Svetlanka [38]

This question is incomplete. The full question is:

Trinucleotide repeat disorders are hereditary diseases caused by mutant genes containing an increased number of repeats of a DNA trinucleotide sequence. Which sequence(s) contain a trinucleotide repeat

a)...CAC GGA AGA AGA AGA AGA AAT AGAC...

b)...AGC GAC AGC AGC AGC AGC AGC AAG T...

c)...TTC ACT GTC ACT GTC ACT GTC ACT GTC C...

d)...CAC GGC GGC GGC GGC GGC ATC GC...

e)...GGC AGGC AGG CAG GCA GGC AGG CTG...

Answer:

a)...CAC GGA AGA AGA AGA AGA AAT AGAC...

b)...AGC GAC AGC AGC AGC AGC AGC AAG T...

d)...CAC GGC GGC GGC GGC GGC ATC GC...

Explanation:

Trinucleotide repeat is a genetic mutation where a crack of three nucleotides is repeated, next to each other, so many times that it leaves the DNA molecule unstable.

This mutation is capable of causing errors in the reading of DNA, which results in disorders and syndromes in the affected organism.

The three strands of DNA shown above show this mutation.

5 0

4 years ago

What conclusion does this model support?

cestrela7 [59]

B because I need to do this thing too I asked my teacher and she said it was b

5 0

4 years ago

Read 2 more answers