1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
loris [4]
2 years ago
9

What is the effect of expressing a dominant active form of the small GTPase Rac1 in a human neutrophil

Biology
1 answer:
yan [13]2 years ago
8 0

Answer:

The neutrophil forms multiple lamellipodia extensions

Explanation:

Neutrophils are white blood cells (granulocytes) which comprise the first line of defense in the innate immune system. The lamellipodium (in plural, lamellipodia) is a cytoskeletal actin extension found in mobile cells, whose main functions are cell motility and migration.  Rac1 is a member of the Rho GTPase protein family which is involved in actin-myosin cytoskeletal reorganization of neutrophil cells in response to microorganism infections. In this regard, it has been shown that Rac1 controls the initial uncapping of actin ends in order to regulate cytoskeleton dynamics, thus regulating lamellipodia formation. By using mice as models, researchers observed that Rac1 constitutive activation may lead to the formation of multiple lamellipodia in neutrophils.

You might be interested in
Employee A gets a pay raise of 50%. Employee B gets a pay raise of 45%. So Employee
blagie [28]

Answer:

A

Explanation:

Employee A gets a bigger pay rise by 5%

8 0
2 years ago
Read 2 more answers
How does cell division prove the cell theory?
cupoosta [38]

A cell is a unit of structure and function in all living things. The division of a cell into two daughter cells with the same genetic material

4 0
3 years ago
Read 2 more answers
What is the difference between voluntary and involuntary muscles?
Yuliya22 [10]

Answer:

Voluntary muscles are muscles that you control; involuntary muscles are muscles that are controlled by the brain, etc and doesn't need your control in order to contract...

3 0
3 years ago
Can someone explain to me why the answer is D?? Thank you!
rjkz [21]

D is the answer because carbondioxide and oxygen are both needed for plants or green plants to survive.

I hope it helped

7 0
3 years ago
HELP!! DNA was isolated from water samples taken from six different sites. This gel
VladimirAG [237]

After running DNA in a gel, bands of different sizes and species might appear. <em>Scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C). </em>

<h2>Gel</h2>

When DNA was isolated and run in a gel, many bands migrated to different points.

These bands were the different-sized fragments of DNA samples from different species from the six sites.

<em>Researchers wanted to figure out where the silver carp is. </em>

To do it, they needed to identify the bands on the gel that belonged  to the silver carp DNA, so they included negative and positive controls to make comparisons.

<h3>Positive and negative Controls</h3>

Negative and positive controls guarantee the interpretations of the results.

  • The positive control shows the band sizes that belong to the silver carp DNA.

<em>Any</em><em> band</em><em> in the sampling sites that</em><em> matches</em><em> one of the </em><em>positive control</em><em> bands indicates that the species is present at that site.</em>

  • The negative control is the opposite. It is the absence of the species' DNA.

<h3>Results interpretation</h3>

As we can see, there are four sites where the bands match one of the bands of the positive control. These are,

  1. North shore site 1
  2. Chicago site 1
  3. Calumet site 1
  4. Calumet site 2

This means that at these four sites, the silver carp is present.

<em>So scientists know silver carp are at North Shore site 1 because one of the</em><em> bands</em><em> in </em><em>lane 1</em><em> matches a band in the </em><em>positive control</em><em> (Option C). </em>

By looking at the lane of the North Shore site 1, we can also see another band (Thinner and grey). But this band does not match either of the positive control bands. This result suggests that the grey band belongs to another species' DNA.

You can learn more about gel electrophoresis at

brainly.com/question/9437877

brainly.com/question/895793

4 0
2 years ago
Other questions:
  • What is the main function of the digestive system
    15·2 answers
  • Your muscles produce this when there are isn't enough oxygen for aerobic respiration
    12·1 answer
  • Given what you know about genetics and molecular biology, describe another way you might be able to identify specific bacteria
    11·1 answer
  • Where are most of the<br>tundra regions found on<br>Earth?​
    10·1 answer
  • In this diagram of a long bone, which type of bone marking is circled?
    9·2 answers
  • The pattern of inheritance can be predicted from data if one is given the parent or offspring genotypes or phenotypes. Two organ
    8·1 answer
  • Which of the following groups of parrots is most likely in Hardy-Weinberg equilibrium?
    5·1 answer
  • Mother nature and deforestation?​
    12·2 answers
  • Please help me i’ll give brainlist
    5·2 answers
  • Ultraviolet rays from the sun are dangerous because they can damage skin. Why do ultraviolet rays cause damage?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!