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
Lunna [17]
3 years ago
13

1. 1 Water makes up between 70-90% of the weight of most life forms, and nearly all chemicals present in living matter are solub

le in it. Water is such a good solvent because the molecular structure of a water molecule is polar, having a negative charge at one end and a positive charge at the other end. Which model best represents a water molecule? A. B. C. D.

Biology
1 answer:
boyakko [2]3 years ago
4 0

Answer:

The correct model is D.

Note: The first attachment below shows the different models. The second attachment shows the correct structural model of the water molecule.

Explanation:

A water molecule is composed of one atom of oxygen and two atoms of hydrogen.

A water molecule is polar, i.e. it contains positively and negatively opposite ends. The polar nature of the water molecule is due to strong electronegativity of oxygen which results in an uneven sharing of the bonding electrons between oxygen and hydrogen. The oxygen atom attracts the shared electrons more to itself, thereby, it acquires a partial negative charge, while the hydrogen atoms acquire a partial positive charge.

The bond angle between the oxygen and hydrogen atoms is approximately 105°. Therefore, from the first attachment below, the correct model for the water molecule is D.

You might be interested in
Opinions on eugenics? also with facts <3
Maslowich
What? is this for points or?
3 0
2 years ago
Which is an arrangement of genes consisting of an operator, a promoter, and a repressor?
Lena [83]
<span>The gene sequence containing an operator, promoter and repressor is known as an operon. These genes are called as structural genes. the operon is regulated by the presence/absence of the inducer such as glucose/lactose. It may also be a constitutive operon, which works all the time.</span>
4 0
3 years ago
To help explain surface tension, use a single water molecule in the template, and draw arrows representing the possible location
kramer

Answer:

The correct representation is attached with the explanation.

Explanation:

In this representation of the surface tension, blue arrows between green water molecules are the possible molecules that can be used as the location for forming hydrogen bonds by a single molecule. Surface tension is the tendency of a liquid surface strectch to neighbouring molecules or ability to shrink in minimum surface area possible. Hydrogen bonds is an intermolecular force or interaction responsible for the surface are of liquide molecules. This bonds is towards every direction where the similar molecule present.

3 0
3 years ago
The area of message exchange between the neurons begins to operate faster the more a person practices a particular activity.
Evgesh-ka [11]
I wanna say true good luck!
5 0
3 years ago
Read 2 more answers
Which term names the unchecked reproduction of a population? A. sustained growth B. rapid growth C. exponential growth D. carryi
Dmitriy789 [7]

Answer:

just took test answer is exponential growth

Explanation:

6 0
3 years ago
Other questions:
  • Give an example of a specialized leaf system that is adapted specifically to its environment and explain how it works.
    8·1 answer
  • In binomial nomenclature, the genus functions as a(n) , and the species functions as a(n) .
    5·1 answer
  • 8) What four elements make up 96% of the human body's mass?
    7·1 answer
  • Which term refers to the stages an organism goes through, from birth to death?
    10·2 answers
  • How do some cold-blooded animals keep their bodies at a constant temperature in cooler environments? By generating their own hea
    14·2 answers
  • What do scientists use to divide the geologic time scale? Major divisions in the fossil records Major divisions in the sedimenta
    15·1 answer
  • Children receive half of their genes from each parent. Does this mean that all children born to a couple will have half their mo
    6·1 answer
  • A scientist wanted to study the effect of a drug on the blood pressure of rats. She set up an experiment in which the experiment
    11·1 answer
  • Choose all the answers that apply.
    5·2 answers
  • Choose all of the responses that pertain to the relative burden of human infectious diseases in the world today.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!