the slowest type of mass movement, which involves the lifting and contracting of soil particles over time , is called

The trp and lac operons are regulated in various ways. How do bacteria regulate transcription of these operons? Sort the stateme

OLEGan [10]

Answer:

Operon is not transcribed:

-lac operon: lactose absent

-trp operon: tryptophan present

Operon is transcribed, but not sped up through positive control:

-lac operon: lactose and glucose present

-trp operon: tryptophan absent

Operon is transcribed quickly through positive control:

-lac operon: lactose present, glucose not

Explanation:

The trp operon is controlled via negative control only.

Presence of tryptophan will inhibit the transcription of the operon genes

The lac operon is controlled via negative control and positive control.

●Negative control:

--Transcription is turned off due to

active Repressor protein and absence of lactose

--Transcription is turned on due to

Inactive Repressor protein and presence of lactose

●Positive control:

--Transcription rate is higher due to absence of transcription and presence of lactose as a regulatory protein (CAP) adhere to the lac operon promoter

8 0

3 years ago

PLEASE HELP ME I'M BEING TIMED I WILL DOUBLE THE POINT

jekas [21]

Answer:

The correct answer is - Honeycreepers arose from a single species that migrated to Hawaii and adapted to different niches over time.

Explanation:

All Hawaiian honeycreeper bird species share similar muscle and skeletal structures. This suggests that all Hawaiian bird species arose from a common ancestor and evolved due to different environmental conditions such as eating particular foods for particular species.

It is believed to be a single species of honeycreeper who migrated from the mainland to Hawaiin island and adapted to different niches over time by the process known as natural selection.

7 0

3 years ago

WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!

umka21 [38]

I’m definitely gonna say the first choice. The others don’t make much sense

4 0

3 years ago

Read 2 more answers

Which geological feature is most common at oceanic-continental convergent boundaries?

alex41 [277]

Trenches are geological feature is most common at oceanic-continental convergent boundaries.

Explanation:

Usually, the oceanic plate, because it is denser, becomes subducted underneath the continental plate. The enormous stress of the two colliding plates causes the plates to warp abit downwards along the boundary causing a trench to form that stretches the boundary.

As the oceanic plate gets subducted and ‘dives’ into the mantle, it begins to melt into magma. Usually, due to the enormous stress along the boundary, fissures develop on teh continental plate along teh boundary. The magma rises through these fissures and erupts at the surface. Several mountains form long the boundary forming another signature geological feature of convergent boundary which is volcanic arc mountains.

Learn More:

For more on geological features of tectonic plate boundaries check out;

brainly.com/question/11726099

brainly.com/question/2011799

#LearnWithBrainly

7 0

3 years ago

The structure and function of mitochondria are often used as support for the endosymbiotic theory. Describe two of these propert

GREYUIT [131]

Mitochondria are made from the process called binary fission. This is the cell division utilized by the prokaryotes. It also has circular DNA that is similar in both size and structure in prokaryotic cells. Mitochondria also has its own DNA different than the DNA found in the nucleus of a cell.

3 0

3 years ago