In a Lewis structure, what does a single line represent?

A. A single ionic bond

B. A single covalent bond

C. A double covalent bond

D. A single valence electron​

Answers

Answer 1

Answer:

The answer is B

Explanation:

it's supposed to represent a single covalent bond


Related Questions

Why is fungi classified as neither a plant nor animal

Answers

Answer:

it is a decomposer

Explanation:

it is not a plant nor an animal it decomposes dead plants and animals

The first organisms to move into an area after a primary disturbance are

Answers

Answer:

Small Organisms that can reproduce faster than others

The inside of a eukaryotic cell is
divided into the...
A. nucleus and cytoplasm
B. organ and organelle
C. cell membrane and cell interior
D. top and bottom

Answers

Your answer would be A. The two main parts the inside of a eukaryotic cell is divided into are the nucleus and cytoplasm.

The inside of a eukaryotic cell is divided into the; A. nucleus and cytoplasm.

What are Eukaryotic cells?

Eukaryotic cells are the one that have a well-defined membrane-bound nucleus to house genetic material in it. Eukaryotic cells also have other membrane-bound organelles.

The Cell membrane makes the selectively permeable barrier for the exchange of material with surroundings as; it separates the cytoplasm from the surroundings.

here liquid phase present between the cell membrane and nucleus is called cytoplasm.

The inside of a eukaryotic cell is divided into the; A. nucleus and cytoplasm.

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Explain how scientists use geologic time to determine the age of landforms.

Answers

Answer:

scientists have developed four different methods of determining the age of the earth. By using these methods, or a combination of them, the age of geological formations created by past events and even the fossilized bones of prehistoric animals can be determined.

Based on the research done by scientists, the Geologic Column, a graph that illustrates earth age, was developed. The Column, with its names for the epochs and eras of time, illustrates what scientists think was taking place in earth history. The three primary methods are:

Radiation Measurement

Stratigraphic Superposition

The Fossil Record

From these methods of dating, scientists have determined that the earth as we know it seems to be about 4.6 billion years old. It is theorized that the earth got its start as a result of what is called the "Big Bang nearly 6 billion years ago. The Big Bang theory holds that all the planets, stars, solar systems, galaxies, etc., are the result of a huge explosion that sent material speeding through space. As time passed, the gravitational force of larger chucks of material attracted the smaller chunks and formed the galaxies and solar systems we see today.

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What are the causes of antibiotic resistance?

Answers

Answer:

Over-prescription of antibiotics.

Patients not finishing the entire antibiotic course.

Overuse of antibiotics in livestock and fish farming.

Poor infection control in health care settings.

Poor hygiene and sanitation.

Explanation:

The structure into which the filtrate first passes

A. Renal artery
B. Proximal tubule
C. Glomerulus
D. Bowman’s capsule

Answers

B bowman’s capsule because

1 point

What is the difference between a solid, a liquid and a gas of the same substance?

O None of the above are true.

Answers

Answer:solid: Has a definite shape and volume. liquid: Has a definite volume, but take the shape of the container. gas: Has no definite shape or volume.

Explanation:

Which description best represents the organelle; Nucleus

Answers

What are the descriptions

dịch kẽ còn được gọi là dịch gì

Answers

Answer:

Chất lỏng được tìm thấy trong các khoảng trống xung quanh các tế bào. Nó xuất phát từ các chất bị rò rỉ ra khỏi mao mạch máu (loại mạch máu nhỏ nhất). Khi chất lỏng kẽ mới được tạo ra, nó sẽ thay thế chất lỏng cũ chảy ra các mạch bạch huyết. Khi nó xâm nhập vào các mạch bạch huyết, nó được gọi là bạch huyết. Còn gọi là dịch mô.

Explanation:

Tôi hy vọng nó sẽ giúp. ; )

а
What behavior does a fly
body
to escape
use
from
predators

Answers

Answer:

Quick getaway is the answer but I'm not too sure


Which plane separates your chest from your spine?
inverse

Answers

Answer: a frontal plane.

Explanation: The frontal plane or coronal plane that divides the body in ventral and dorsal part.

need help plssssssss

Answers

Which ones do you want answered?

A science student makes the following statement:
If plants need light to grow, then plants in the shade will
grow more slowly.
What is the student doing?
A. Making a prediction
B. Forming a hypothesis
O
C. Drawing conclusions
D. Collecting data
SUBMIT

Answers

It is “B” he is Forming a hypothesis

When muscle cells run out of____________, they resort to lactic acid fermentation for a supply of energy. A. Carbon Dioxide B. Oxygen

Answers

Answer:

B oxygen

Explanation:

When your body runs out of oxygen, or your other systems can't deliver oxygen to your muscles quickly enough, your muscles convert the available glucose into lactic acid instead.

Lactic acid fermentation is the energy source used by muscle cells when their supply of oxygen runs low.

What is muscle cell?A muscle cell is sometimes known as a myocyte because smooth muscle cells and cardiac muscle cells are both very small cells. The long, threadlike cells of skeletal muscle with many nuclei are known as muscle fibers. Muscle cells are derived from myoblasts, which are embryonic progenitor cells.The cytoplasm and cell membrane of a muscle cell are known respectively as sarcoplasm and sarcolemma. The sarcoplasm contains myoglobin, which is a site for storing oxygen, and glycogen in the form of granules in the cytosol, which is an energy source.When your body runs out of oxygen or when your other systems are unable to transfer oxygen to your muscles quickly enough, your muscles convert the available glucose into lactic acid instead of oxygen.

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Which of the following is NOT a function of the nervous system?
a. receives information about your body
c. signals a response to stimuli
b. maintains homeostasis
d all of these are nervous system functions

Answers

Answer:

d

Explanation:

all of these are nervous system function

Answer:

D

Explanation:

All of these are nervous system functions, your nervous system controls your whole body. Since your nervous system is comprised of your brain and other things like the brain stem, everything in your body you can imagine is from the nervous system.

first invertebrates to develop a true nervous system​

Answers

Answer:

Coelenterates are the first invertebrates to develop a true nervous system.

Discuss why insecticide sprays are ineffective in the fight against Zika and why scientists are looking for alternatives.

Answers

Answer:

Some existing methods for controlling Zika-carrying mosquitoes are not effective and may even be counter-productive.

Explanation:

It was found that while biological interventions did appear to reduce numbers of disease-carrying insects more than chemical controls, the quality of the evidence was often poor.

A scientist who has isolated the green fluorescent protein (GFP) gene from a sample of jellyfish DNA would use which technology to make GFP protein from the GFP gene most effectively?

Gel electrophoresis
Polymerase chain reaction
Restriction enzyme digestion
Gene cloning

Answers

Answer:

Polymerase chain reaction

Explanation:

Please let me know if this is correct because I worked hard on it! Also, have a great day and PLEASE MARK BRAINLIEST!

Gene Cloning is referred to as producing similar or identical copies of the same recombinant molecule. So, the correct option is (D).

What is Gene Cloning?

Gene cloning is defined as the process in which the gene of interest is copied from the extracted DNA and inserted into the host to replicate the same.

The steps of gene cloning are:

Isolation or extraction of genes of interest using restriction enzymes.Selection of a suitable vector or plasmid carrying the gene of interest.The DNA fragment is then introduced into the desired vector.Transformation of donor DNA into a suitable host cell.The final step is to isolate colonies of transformed cells.

Thus, Gene Cloning is referred to as producing similar or identical copies of the same recombinant molecule. So, the correct option is (D).

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Use the drop-down menus to complete the sentences.

A
is a good digital learning environment for someone who is studying science.


are technology trends found in the field of medicine.

If you are looking for an out-of-print copy of a book, you should check a

Answers

Answer:

1. Digital Lab

2.Electronic health records

3.Digital Library

You're Welcome :)

Explanation:

Answer:

1. Digital Lab

2.Electronic health records

3.Digital Library

Explanation:

Hope this helped! :)

Which atmospheric condition will increase the amount of air pollution close to the surface of the Earth?

- Prevailing winds
- Dry deposition
- Thermal inversion
- Photochemical smog

Answers

The atmospheric condition will increase the amount of air pollution close to the surface of the Earth is Prevailing winds.

Prevailing winds in the ecosystem blows dust and other particles from

different areas into the air thereby making the air dusty and unsafe for

breathing by organisms.

Prevailing winds has its importance in helping to determine the amount of rainfall an area will receive during a period of time.

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Describe the function of chloroplasts.
Chloroplasts use light energy to make sugar from carbon dioxide and water.
O Chloroplasts break down sugar to make energy in the form of adenosine triphosphate, or ATP.
Chloroplasts use light energy to make sugar, carbon dioxide, and water.
Chloroplasts break down sugar to make energy in the form of carbon dioxide and water.

Answers

Answer:

chloroplasts use light energy to make sugars, water, and carbon dioxide.

Explanation:

Which step of the scientific method do you perform after you form a
hypothesis?
A. Collect data and observations.
B. Draw conclusions.
C. State the problem.
ОО
D. Conduct an experiment.

Answers

Answer:

d. conduct an experiment

Answer:

D. Conduct an experiment.

Explanation:

State the Problem.

Collect Information (Data and Observations)

Form a Hypothesis.

Test Hypothesis: Conduct an experiment

Keep Accurate Record.

Check Results.

Repeat Experiment.*

Draw Conclusions.

which organ breaks down food into smaller chemicals

Answers

Answer:

pancreas

Explanation: i gotchu bro

Answer:

The pancreas

Explanation:

A bacterial cell usually contains a single loop of DNA that is located in the cytoplasm of the cell and is not surrounded by a nuclear membrane. Some bacteria have additional loops of DNA called plasmids. Plasmids can be used for genetic engineering because DNA from other organisms can be spliced into a plasmid loop. For example, scientists in the late 20th century discovered a way to insert the portion of human DNA that codes for the protein insulin into plasmid E. coli bacteria. Which statement best explains why these genetically modified bacteria have been useful to society?

A. Human diabetics are now more resistant to bacteria

B. The bacteria are resistant to human diabetics

C. The bacteria can now make their own insulin

D. the bacteria are used to produce cheap insulin.​

Answers

Answer: A is the correct answer.

because for the treatment of one type of diabetes insulin should be provided but isolation of insulin and production is so costly.

but as DNA recombination has developed we can use bacterial replication system to produce insulin. they replicate very fast so large amount of insulin will be produced and then it can isolated.

but we also know that insulin of bacteria needs some modification before it can be used in human.

if want more info ask here. hope it helps.

We used a microscope marked ×10 on the eyepiece and ×25 on the objective to observe an object that is 0.5 mm long. How long will this object be when observed under the microscope? ​

Answers

Answer: 2500 i think don't count me on it though sorry if it is wrong.

Explanation:

Question 1 of 10
Psychology is the scientific study of:

Answers

Answer:

The mind and behavior!

Explanation:

Hope this helps!:)

Name a type of scientist to help people recover from an illness. how do they do this?

Answers

Answer:

Pathologist

Explanation:

A pathologist plays a crucial role in medical care. Sometimes called “the doctor's doctor,” they help the treating physician diagnose a patient and pinpoint the best course of treatment

How is sucrose produced from the end products of photosynthesis?

Answers

Sucrose is the end product of photosynthesis and the primary sugar transported in the phloem of most plants. ... SuSy catalyzes the reversible cleavage of sucrose into fructose and either uridine diphosphate glucose (UDP-G) or adenosine diphosphate glucose (ADP-G).

Sucrose is produced from the end products of photosynthesis by the fact that when oxygen is liberated in the atmosphere and hydrogen facilitates the assimilation of carbon dioxide in the dark reaction, which ultimately forms sucrose, starch, and maltose.

What is Photosynthesis?

Photosynthesis may be defined as a process through which green plants and some photosynthetic algae synthesize their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.

Calvin cycle stimulates the synthesis of Sucrose. In the cytosol, triose phosphate gest converted into Fructose 1, 6- bisphosphate which ultimately forms Glucose 1- phosphate that leads to the formation of UDP Glucose and ultimate sucrose if formed.

Therefore, the process of formation of sucrose from the end products of photosynthesis is well described above.

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Biology 3.01
1. What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell?

Answers

Answer:

chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.

Explanation:

Answer:

chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.

Explanation:

Which statements about wells are true? Check all that apply.

Wells bring groundwater from the unsaturated zone to the surface of the water.
Wells need to be drilled below the water table.
If water is pumped from a well too quickly, the well may run dry.
Water from wells is generally not safe to drink.
Water gushes from artesian wells due to pressure.

Answers

Answer:

Wells need to be drilled below the water table.

If water is pumped from a well too quickly, the well may run dry.

Water gushes from artesian wells due to pressure.

Explanation:

The statements that assert a true claim regarding the wells would be as follows:

b). Wells need to be drilled below the water table.

c). If water is pumped from a well too quickly, the well may run dry.

e). Water gushes from artesian wells due to pressure.

The above statements offer appropriate claims regarding the wells that they are required to be penetrated down the water table because it assists in striking the water from the lower levels as well. The next statement asserts that water must be transported from wells in a hurry because it can impact the yielding ability of the wells.The streaming of water from the artesian wells is primarily because of the pressure as it helps in the release of the water effectively.

Thus, options b, c, and e are the correct answers.

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