What two cell types do complement proteins interact with, besides the pathogen itself?

Answers

Answer 1

Answer: The complement proteins interact with B and T cells also. Complement proteins help B cells with activation and tolerance against the pathogen they are dealing with.

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How does meiosis help to maintain the continuation of a species?
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Volcanoes impact both the air and land of the surrounding environment. true or false

Answers

True because the lava (if it irrupts) changes the land into an new shape or size. and the smoke may make the air a dark color there for making it hard to see.

false because only water and air surrounds the environment

Which of these facts about wild boars is best supported by the evidence provided?

Answers

Here are a couple of facts about boars based on the evidence found by the scientists :
- Boars have been domesticated by humans since 13,000 BC
- Boars are originated from Iberian Pigs
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Identify the values of x and y that would make the following expression represent a real number.(4 + 5i)(x + yi)

A. x = 4, y = 5
B. x = –4, y = 0
C. x = 4, y = –5
D. x = 0, y = 5

Answers

I think the correct answer from the choices listed above is option C. The values of x and y that would make the expression to represent a real number would be that x = 4, y = –5. Substituting and simplifying,

(4 + 5i)(4 - 5i)
16 - 20i + 20i - 25i²
16 - 25(-1)
16 +25
41

x = 4, y = -5

Further explanation

This is a problem with complex numbers.

A complex number is a number of the form $\boxed{ \ z = x + yi \ }$ where x and y are both real numbers.

x is considered the real part of the complex number.
y is considered the imaginary part of the complex number.
The real part of a complex number $\boxed{ \ z = x + yi \ }$ is denoted by $\boxed{ \ Re(z) \ }.$
The imaginary part of a complex number is denoted by $\boxed{ \ Im(z) \ }.$

The modulus of a complex number $\boxed{ \ z = x + yi \ }$ is denoted by $\boxed{ \ |z| \ }$ and defined to be $\boxed{ \ |z| = √(x^2 + y^2) \ }$
Remember this $\boxed{ \ i^2 = (√(-1))^2 = -1 \ }$

For example, $\boxed{ \ z = 3 - 4i \ }$

Re(z) = 3
Im(z) = -4
The modulus $\boxed{ \ |z| = √(3^2 + (-4)^2) = 5 \ }$

Let's look at the key problem.

We must identify the values of x and y that would make the following expression represent a real number.

$\boxed{ \ = (4 + 5i)(x + yi) \ }$

$\boxed{ \ = 4(x + yi) + 5i(x + yi) \ }$

$\boxed{ \ = 4x + 4yi + 5xi + 5yi^2 \ }$

$\boxed{ \ = 4x + 4yi + 5xi - 5y \ }$

At this point, 4yi and 5xi must be of equal value and marked opposite, so that the expression represents real numbers.

$\boxed{ \ 4y = - 5x \ }$

Become a fraction, i.e.,

$\boxed{ \ (x)/(y) = (-4)/(5) \ or (x)/(y) = (4)/(-5) \ }$

From the options, the answer is C.

$\boxed{ \ x = 4, y = -5 \ }$

- - - - - - -

Let's check back to expression.

$\boxed{ \ = (4 + 5i)(x + yi) \ }$

$\boxed{ \ = 4x + 4yi + 5xi - 5y \ }$

x = 4 dan y = - 5 ⇒ $\boxed{ \ = 4(4) + 4(-5)i + 5(4)i - 5(-5) \ }$

$\boxed{ \ = 16 + -20i + 20i + 25 \ }$

$\boxed{ \ = 16 + 25 \ }$

Thus the expression represent a real number of 41.

Learn more

The midpoint brainly.com/question/3269852
The piecewise-defined functions brainly.com/question/9590016
The composite function brainly.com/question/1691598

Keywords: identify, the values of x and y, the following expression, represent a real number, (4 + 5i)(x + yi), a complex number, real, imaginary

40 POINTS (APEX)a model cell filled with 15% salt solution is placed in a beaker filled with an 8% salt solution which result is most likely
A) salt will move out of the model cell by active transport
B) salt will move into the model cell by facilitated diffusion
C) water will move into the model cell by osmosis
D) water will move out of the model cell by osmosis

Answers

Answer:

Explanation:

that true because the water have 1 percent of salt it in the water so the fish and the oher anmail can live in the sea

Answer:

Its C) water will move into the model cell by osmosis

Explanation:

Indicate the correct designation of the paired sex chromosomes.male:
female:

XX
XY
YY

XX
XY
YY

Answers

Out of the written pairs, males have XY while females have XX

XY are males XX are females

What was the meaning of Mount Rushmore

Answers

Answer:

The purpose of the memorial is to communicate the founding, expansion, preservation, and unification of the United States with colossal statues of Washington, Jefferson, Lincoln, and Theodore Roosevelt.

Explanation:

Hope this helps!

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Help please brain puzzles!!!

I need help on this one too I have 9 so there will be more and this is for algebra 1 thanks