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vodomira [7]
3 years ago
14

Cuales son los proveedores de correo electrónico wedmail mas usados y porque​

Biology
1 answer:
Aneli [31]3 years ago
6 0
Es mejor iCloud mail porque protege tu identidad y no puede ver tantos scammers
You might be interested in
Which property causes atomic particles to attract or repel each other
morpeh [17]
That would be electric charge
6 0
3 years ago
If there is no lactose present, how does bacteria respond? The gene for beta-galactosidase turns on. The gene for beta-galactosi
mojhsa [17]

Answer:

The gene for beta-galactosidase turns off.

Explanation:

The gene that codifies the beta-galactosidase enzyme is part of the <em>lac</em> operon, which also contains two other genes that produce enzymes involved in the metabolization of lactose.

Between glucose and lactose, the bacteria will preferentially use glucose as an energy source. On the other hand, lactose is a dimer, and thus a series of enzymes are needed to process lactose before its use as an energy source.

If there is no lactose present, the genes contained inside this operon are turned off (the operon is repressed).

6 0
3 years ago
Read 2 more answers
A radula is a specialized feeding organ used to scrape material off of a substrate for ingestion, much like a cheese grater scra
Sergio039 [100]

Answer:

D. mass feeder

Explanation:

A) suspension feeder

B) fluid feeder

C) deposit feeder

D) mass feeder

<em>Suspension feeder requires capturing of food that are suspended in water through the use of specialized organs.</em>

<em>Fluid feeding involves feeding on liquid (such as blood) emanating from other organisms.</em>

<em>Deposit feeding involves feeding on sediments</em>

<em>Mass feeding involves ingestion of scraps of different food materials.</em>

Hence, the correct option is D.

7 0
4 years ago
Put these in order NO LINKS NO LINKS
sertanlavr [38]

Answer:

From smallest to largest:

Capillaries, alveoli, bronchi. bronchioles, trachea, pharynx, nasal cavity.

4 0
3 years ago
The ostrich is a bird. However, it has traits that are different from those of the birds we typically see flying around our neig
Romashka-Z-Leto [24]

Answer:

I found this from someone else. This is not my work, Also if this does not answer the question ask the question on here and you can see more answers. hope this helps.!

Explanation:

According to National Geographic, ostriches are a part of a very small group of birds that cannot fly because unlike most birds, their small wings are not strong enough to carry their body for flight and their breastbone isn't balanced enough for flying. Birds that are unable to fly are called ratites.

A number of scientists namely Thomas Huxley, Richard Owen, and others have tried to show that these ratites are actually related to each other and eventually, it was discovered that they all had one thing in common, the way the bones at the roof of the mouth were arranged was similar to that of reptiles rather than other birds.

Richard Owen found and assembled the remains of an extinct ostrich skeleton which was an extinct moa and contrary to already held opinion, one ratite known as tinamous did not really fit with the profile of a ratite because it could fly, even though almost grudgingly and they possessed keeled sternum which suggests that they evolved from flying birds.

DNA tests showed that tinamous evolved within ratites and not necessarily as a separate entity. The tests also showed that moas and tinamous are related.

It was also speculated that the division of the supercontinent Pangaea southern side led to the separation of flightless ratite ancestors, causing each landlocked group to evolve and become the flightless birds we know today such as the ostrich, rheas, etc.

5 0
2 years ago
Read 2 more answers
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