BIOLOGY HIGH SCHOOL

The graph of the linear equetion 3x + 5y - 15 = 0 cuts the y - axis at the point full solution​

Answers

Answer 1
Answer:

Answer:

y = -(3)/(5)x+3

Explanation:

3x + 5y - 15 = 0

So we want to get it in the form y = mx + b

Subtract 5y from both sides;

3x - 15 = -5y OR -5y = 3x - 15

Divide both sides by -5

y = -(3)/(5)x+3

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How does the melting of ice caps near the North Pole affect the salinity of the ocean?

Answers

The salinity of the water goes down as the icecaps melt. That is because the icecaps are fresh water, meaning there's no salt in that ice. If they melt rapidly, the water mixes with the ocean water that is salty and since fresh water is added, the salinity reduces and the oceans become less salty.

When a collision occurs between two reactant particles that, between them, have the required minimum kinetic energy, or activation energy, a product does not always form. Which of the following reasons explains this?A. low temperature

B. small surface area

C. unfavorable geometry

D. low concentration

Answers

I think the correct answer from the choices listed above is option C/ One reason that a product does not always form is due to unfavorable geometry of the reactants involved. When the geometry is not good for substances to react then no reaction can occur although there is enough energy present.

The correct answer is

C- unfavorable geometry

:)

1. An advantage of light microscopes compared to electron microscopes is that light microscopes A)allow you to view living cells, while electron microscopes do not. B)allow you to view the surface of cells in greater detail than electron microscopes. C)have a higher magnification capability because they use natural light. D)have a greater resolution available because they use white light. 2. To study the details of protein molecules on the surface of a cell, a biologist would likely use a A) compound light microscope. B) dissecting microscope. C) scanning electron microscope. D) transmission electron microscope. 3. What would be the magnification of a specimen viewed with a compound light microscope that has an objective power of 40x and an ocular lens power of 10x? (2 points) 40x 50x 400x 500x

Answers

Answer:

1. The correct answer would be  A) allow you to view living cells, while electron microscopes do not.  

There are many advantages of light microscope over electron microscope such as:

  • It is easy to use as compared to the electron microscope.
  • It enables us to view both alive as well as dead specimen whereas electron microscope can be used to view dead specimen only.
  • Light microscopes are much cheaper and have much lower maintenance cost as compared to the electron microscope.

2. The correct answer would be C) scanning electron microscope

Scanning electron microscope or SEM is a type of electron microscope which is used to observe surface topography and composition of the specimen. It can achieve resolution of up to 1 nanometer.

3. The correct answer would be 400x

The total magnification of the microscope can be calculated by multiplying the powers of the objective lens and that of the eye lens.

Thus, the magnification of the specimen would be 40*10 = 400x.

1. The correct answer is A) allow you to view living cells, while electron microscopes do not. Light microscopes use visible light to illuminate specimens, which is less damaging to living cells compared to the electron beams used in electron microscopes.

The electron microscope

2. The correct answer is C) scanning electron microscope. Scanning electron microscopes (SEMs) are commonly used to study the details of protein molecules on the surface of cells. SEMs provide high-resolution images of the surface topography by scanning the specimen with a focused beam of electrons.

3. To calculate the total magnification of a compound light microscope, you multiply the magnification of the objective lens by the magnification of the ocular lens. In this case, the objective power is 40x, and the ocular lens power is 10x. Therefore, the magnification of the specimen viewed with this compound light microscope would be 40x * 10x = 400x. So, the correct answer is C) 400x.

Read more on electron microscope here brainly.com/question/2845212

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The energy needed for body's internal activities when at rest is your Active Metabolic Rate.True
False

Answers

The energy needed for body's internal activities when at rest is your active metabolic rate is going to be false.
true it does thats the answer

Animals can communicate by _____.making nosies
making gestures
phyisical contact
using scent or odors

Answers

Answer: making noises

Animals can communicate by making noises. The noises made by an animal is a form of communication in which only animals understand. This is a way of informing other animals of what a certain animal has discovered. 
i would making noises(A), why?
Cuz' we do not understand their language, but they actually do talk.
Our ears are just closed from understanding there language.
Also, look at the fish, only after people have created a microphone thing, then only at that point we know now, that fish make noises, and our ears were closed!!! only after the scientists made the thing, then only we now know that there are noises in the water.
Hope that this would help you! =)

1. Your online chat name should never contain your full name. true
false

2. It is safe to tell an online acquaintance (someone you have never met in person) your:
A. full name
B. address
C. phone number.
D. favorite music

Answers

The correct options are as follows:

1. TRUE.

Your online chat name is your identity, which you use on the internet to communicate with your old friends and new friends, who you have just met and who you probably haven't met personally. It is of utmost importance that you don't use or reveal your full name online. This is because, your full name is the only thing some hackers need to get all the information they need about you. Through that single information, they can cause great havoc for you, like emptying your bank account, using your identity to commit fraud, stealing your email password and sending fraud messages through your box, etc.


2. D.

It is safe to tell an internet friend your favorite music. That is a relatively non important personal information that you can share with anybody. Such an information can not be used against you in any significant way. But sharing personal information such as full name, address and phone numbers can be very dangerous indeed if such information is shared with the wrong person.

1.) It is True that your online chat name should never contain your full name. 

2.) It is only safe to tell an online acquaintance, a person you have never met in person, your favorite music. You should never tell anyone you don't know personal information about yourself.  
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