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Masja [62]
3 years ago
10

What is the initial stage of all stars

Biology
1 answer:
laila [671]3 years ago
5 0

Answer:nebula

Explanation:

Took the test

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Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highly specialize
Elenna [48]

Answer:

C) are sequence-specific DNA endonucleases

Explanation:

Restriction enzymes represent a type enzyme capable of recognizing short nucleotide sequences to cut at specific restriction sites in the DNA, these sites are known as target DNA sequences. Some of the most commonly used restriction enzymes are <em>EcoRI</em>, <em>BamHI</em> and <em>HindIII</em>, isolated from <em>Escherichia coli</em>, <em>Bacillus amyloliquefaciens</em> and <em>Haemophilus influenza</em>, respectively. Restriction enzymes are endonucleases because these enzymes only cleave the phosphodiester bond within the DNA chain, conversely to exonucleases, which cleave nucleotides from the end of the polynucleotide DNA strand.

3 0
3 years ago
HOW DO I FIND THE PERCeNT
Tpy6a [65]

Answer:

50% will have ears

Explanation:

To have ears you must have the trait nn since the ears trait is recessive,  2 of the four possible offspring are like this, so 50%

5 0
3 years ago
Read 2 more answers
Which of these characteristics is shared by algae and seed plants? Which of these characteristics is shared by algae and seed pl
Tomtit [17]

Answer:

the correct answer is: chloroplasts

Explanation:

Chloroplasts are the cellular organelles that in photosynthetic eukaryotic organisms take care of photosynthesis.

The characteristic shared by both algae and seed plants is the presence of chloroplasts. Algae and seed plants both have chloroplasts.

5 0
3 years ago
Which force primarily acts on a natural or artificial satellite to keep it in orbit around a planet
rjkz [21]

Answer:

Gravity

Explanation:

When its altitude is matched by the pull of the Earth's gravity, a satellite circles Earth. The satellite will fly off into orbit in a straight line or crash down to Earth without this equilibrium.

By juggling two things, a satellite retains its orbit: its velocity (the speed it takes to travel along a straight line) and the gravitational force on it that the Planet provides. To resist the greater gravitational force, a spacecraft orbiting closer to the Earth needs more velocity.

5 0
3 years ago
5. The more diverse an ecosystem is
alukav5142 [94]

Answer:

La diversidad de un ecosistema depende de dos factores, el número de especies presente y el equilibrio demográfico entre ellas. ... Por otra parte, entre dos ecosistemas que tienen el mismo número de especies, consideraremos más diverso al que presenta menos diferencias en el número de individuos de unas y otras especies.

Explanation:

xd

6 0
3 years ago
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