1) Explain what a covalent bond is.

Answers

Answer 1

Answer:

its a chemical link between two atoms or ions in where the electron pairs are shared between them :)

Explanation:


Related Questions

The set of human tail bones is an example of a(n)

Answers

Answer:

wisdom teeth, and inside corner of the eye

Explanation:

Describe how an enzyme’s structure affects its function:

Answers

Answer:

Most enzymes are proteins and therefore their function is specific to their structure. Enzymes function as a catalyst to increase the rate of virtually all the chemical reactions that take place in a living system

Explanation:

Cross a hemophilia female with a normal male. Why is there a 100%
chance of the sons having hemophilia?

Answers

Answer:

No

Explanation:

The normal male would need it in order to have a son with hemophilia.

All cells have a cell wall but only plant cells have a cell membrane

A) true
B) false
C) neither true or false

Answers

Answer: false

Explanation: Only plant cells have a cell wall. All feels have a cell membrane

All cells have a cell wall but only plant cells have a cell membrane. The given statement is false.

What is difference between unicellular and multicellular organisms?

The main difference between unicellular organisms and multicellular organisms is that unicellular organism is unspecialised it means all the body function depends upon only on the single cell and in multicellular organism there is specific cells for specific purposes.

Multicellular and unicellular organisms are perform almost all the life running activities and processes such as respiration, reproduction digestion, breathing, and metabolism.

In unicellular organism division of labour is at the organ level on the other hand in multicellular the division of labour  at cellular, tissue, organs and organ system level.

Unicellular organism has simple body organization and multicellular organism have complex body organism.

Therefore, all cells have a cell wall but only plant cells have a cell membrane. The given statement is false.

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Which animal can leave its eggs to hatch and does not need to take care of its infants?

Answers

Answer:

snakes

Explanation:some mother snakes abandon their eggs and the infants already know how to hunt and survive

Answer: Sea Turtles and frogs

Explanation: because they lay them in a place under ground or in a place where not of animals can take them

Hydras are animals related to coral and jellyfish. Hydras can reproduce sexually or asexually. Why would hydras avoid reproducing asexually when conditions are difficult?
1. The high genetic diversity could mean that all of the hydras die, depending on the situation.

2. The lack of genetic diversity could mean that all of the hydras die, depending on the situation.

3. Reproducing more slowly would be a good way to take advantage of plentiful resources.

4. Reproducing more rapidly would be a good way to take advantage of plentiful resources.

Answers

Answer: 3. Reproducing more slowly would be a good way to take advantage of plentiful resources.

Explanation:

Hydra reproduce by both sexual and asexual modes of reproduction. In the case of asexual reproduction the bud develops on the parent body and derives nutrition from parent body, matures and finally get detached from the parent body. During asexual reproduction many buds will develop and live as an individual organism this will reduce the availability of resources like habitat, food, and others. Thus if the organism reproduces slowly then it will take advantages of many resources without experiencing the scarcity of resources.

When fresh river water meets the salty ocean the waters do
a
They have different densities.
They form layers.
The fresh water floats on the salt water.
All of the above.

Answers

A.they have differentiations densities

a data table shows the height of a person on his birthday each year from age 2 to 12. What trend would you expect to see in a lime graph of the data.

Answers

You would expect to see an increasing line

Which is NOT an example of Human Environment Interaction


building a dam to control river water


allowing a forest to grow wildly


building a house with a heater and air conditioning

Answers

Answer:

Answer: B: allowing a forest to grow wildly

Explanation:

The other ones (A & C) Have Human interaction, B explains that you are leaving the Environment alone, not building anything, not cutting anything, but letting nature take its course.

Draw a sketch of your completed DNA model or insert a picture of the model you created. it doesn't have to look perfect !! please help will mark brain least

Answers

Answer:

there

Explanation:

There are several external forces that acct on rocks in the rock cycle. Which one is
NOT one of these forces?
A.water
B.pressure
C.ice
D.wind

Answers

the answer is B. pressure

Answer:

B) pressure

Explanation:

PLEASE HELP ME I REALLY NEED THE ANSWER
Which is the correct order of the Taxonomic Groups from broadest to more specific?

a). Domain, Kingdom, Phylum, Class, Order, Family, Species, Genus

b). Domain, Kingdom, Phylum, Class, Order, Family Genus, Species

c). Kingdom, Domain, Class, Phylum, Family, Order, Genus, Species

d). Domain, Phylum, kingdom, Class, Family, Order, Genus, Species

e. None of the above

Answers

The answer is b domain, kingdom, phylum, class, order, family, genus, species

bark bark potato (ignore this)

Answers

yeah can i get brainliest too bro

1. In which direction do planets orbit the Sun, clockwise or
counterclockwise?

Answers

Answer:

Counterclockwise

Explanation:

Answer:

Counterclockwise

Which statement is part of the cell theory ?

A)all living organisms are made of cells

B)all cells contain DNA that they pass on to daughter cells

C)all cells depend on their surroundings to provide energy

D)all cells have a nucleus

Answers

Answer:

A.

The answer is A bc THe Cell theory is what the conditions cells follow.

   Hope this helps! ;)

 ~Emilie G.

Who invented the microscope?​

Answers

Answer:

Zacharias Janssen

Explanation:

Answer:

Washington Teasdale

Explanation:

you can just research this online

Vernon is using the diagram shown below to develop a model of photosynthesis. The letters A, B, and C each represent a reactant or product of the process.

In the light-dependent reactions, light strikes the oval thylakoids. Compound A enters the thylakoid, and compound B leaves it. In the light-independent reactions, compound C enters a cycle in the stroma, and sugars leave the cycle. ATP and NADPH cycle between the two sets of reactions.

Should water (H2O) be included in the model as a reactant or product? If so, how should it be included?

A. Yes, as reactant A.
B. Yes, as product B.
C. Yes, as reactant C.
D. No, it should not be included.

Answers

Yes a reactant I don’t understand the a and c part it’s one of those two

Photosynthesis is the process of preparing food in the presence of light, water, and carbon dioxide. Photosynthesis can be light-dependent or light-independent reactions.

The correct answer is:

Option A.  Yes, as reactant A.

The mechanism can be explained as:

1. Light-dependent reactions convert light energy into chemical energy.

2. The light-dependent reactions require water and light to yield oxygen, hydrogen, and energy molecules.

3. The light is used to break down the molecule of water into oxygen and hydrogen when the light strikes the thylakoid.

4. The ATP is generated in the stroma of the thylakoid membrane. The excited electrons released during the splitting of water is utilized to produce high-energy molecule.

Thus, water molecule should be used as a reactant because it yields products.

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Which of the following describes what might happen with a sudden increase in precipitation in the grassland biome? (4 points)

a
Rise in drought-tolerant plants

b
Salt and sediment deposition

c
Increase in plant and animal diversity

d
Nutrient loss and soil erosion

Answers

The answer would be a

Increase in plant and animal diversity describes what might happen with a sudden increase in precipitation in the grassland biome. Therefore, the correct option is C.

What is precipitation?

Precipitation is the phenomenon in which condensed water vapors falls on the earth's surface under the influence of gravity.

A sudden increase in precipitation in the grassland biome can provide more water for plants and support their growth, which can lead to an increase in plant productivity and diversity. This in turn can provide more food and habitat for animals, leading to an increase in animal diversity as well.

While there may be some nutrient loss and soil erosion as a result of increased runoff, the overall effect on the ecosystem is typically positive in terms of increased biodiversity. Salt and sediment deposition are not typically associated with an increase in precipitation in the grassland biome. Therefore, the correct option is C.

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what is a defining characteristic in eukaryotic cells? What type of organisms have eukaryotic cells

Answers

Answer:

The defining feature of a eukaryotic cell is the presence of a nucleus. Most animals and plants have eukaryotic cells.

Explanation:

Eukaryotic cells have a nucleus, and membrane-bound organelles All multicellular organisms are made up of eukaryote cells

Eukaryotic cells are one of the two types of cell types prokaryotic and eukaryotic. There are various structural and functional differences found in them.

Eukaryotic cells are defined by:

the presence of a nucleus enclosed by a complex nuclear membranepresence of membrane-bound organellescell wall may or may not be presentcell division is mitosis or meiosis

Eukaryotic organisms have various range of organisms including mostly all multicellular such as animals, plants, fungi, and protists, as well as most algae. Eukaryotes can be single-celled as well.

Thus, the eukaryotic cells have a nucleus, All multicellular organisms are made up of eukaryote cells

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Whoever says it first gets brainliest! Please help. 18 points!

Answers

Answer:

it c

Explanation:

Answer: d

E

xplanation:

If there is moisture in the atmosphere as the front (pictured) comes through, what effect could it have on temperature and weather?
(ANSWER FAST!!)

Answers

Answer:

c)The temperature would decrease and there would be a chance of thunderstorms.

Explanation:

The temperature would decrease and there would be a chance of thunderstorms. So, the correct option is C.

What is Thunderstorm?

A thunderstorm is defined as a storm with lightning and thunder produced by a cumulonimbus cloud, usually producing strong winds, heavy rain, and sometimes hail. Thunderstorms are so called because of the thunderous loud noise they make.

There are three basic elements that lead to the development of thunderstorms: moisture, an unstable atmosphere, and some way for the atmosphere to move where the moisture is necessary to produce thunderstorm clouds and precipitation.

Thus, the temperature would decrease and there would be a chance of thunderstorms. So, the correct option is C.

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Which statement accurately describes sickle cell anemia?

Answers

Answer:

Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body

Explanation:

Answer:

A group of disorders that cause red blood cells to become misshapen and break down.

Explanation:

With sickle cell disease, an inherited group of disorders, red blood cells contort into a sickle shape. The cells die early, leaving a shortage of healthy red blood cells (sickle cell anemia), and can block blood flow causing pain (sickle cell crisis).Infections, pain, and fatigue are symptoms of sickle cell disease.

Study the image.
What do the arrows at point 3 indicate?
A) Warm air is cooling quickly.
B) Cool air is above water.
C) Cool air is warming quickly.
D) Warm air is above land.

Answers

Answer:

The answer is C

Explanation:

Answer:

A

Explanation:

The warm air is sinking meaning that it's cooling down. Cooler air is denser that's why they sink while warmer air is less denser, it rises.

The path of light refraction in the eye
I know light reflects 4 times but I don't know where​

Answers

Answer:

Light ray coming inside the human eye refracts four times,  

the first refraction takes place in cornea, secondly it takes place in aqueous humor, followed by refraction in lens and then in vitreous humor.

What was the Aristotelian philosophy of the history of the Earth? How did this affect their motivation for studying geography? Why?

Answers

Answer:

For nearly 1,000 years, Aristotle’s view of a stationary Earth at the center of a revolving universe dominated natural philosophy, the name that scholars of the time used for studies of the physical world.

Explanation:

Use organic in a sentence.

Answers

Answer:

Nowadays, we are having organic vegetables.

Answer:

The apple that I bought today has never been sprayed with pesticides, so they labeled it as organic!

or

Hydrogen is an organic compound

The pancreas is an organ present in some animals. It produces enzymes that are used in the digestive system of the animal. Which cell structure is likely to be abundant inside pancreas cells?

A. Cell walls, because cell walls cannot be digested by enzymes
B. Chloroplasts, because chloroplasts provide the energy for making enzymes
C. Nuclei, because nuclei contain the instructions for synthesizing enzymes
D. Ribosomes, because enzymes are synthesized on ribosomes

Answers

Answer: the answer is D Ribosomes, because enzymes are synthesize on ribosomes

Explanation:

Because we need more protein to be produced in are pancreas

The messenger RNA (mRNA) sequence is read by the ribosome, which then interprets the genetic code into a predetermined string of amino acids. These amino acids then form lengthy chains, which fold to form proteins. Thus, option D is correct.

What is the role of ribosomes in the enzyme formation?

Protein synthesis is always carried out by the ribosome, which converts the genetic code produced in mRNA into an amino acid sequence.

Ribosomes carry out the initiation, elongation, and termination of peptide synthesis using metabolic energy, soluble transfer RNA's, and cellular auxiliary proteins.

The biocatalyst, which are proteinaceous in nature, are enzymes. The ribosomes found on the endoplasmic reticulum produce these. A cell's ribosomes are referred to be its “protein factory.”

Therefore, Ribosomes, because enzymes are synthesized on ribosomes.

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Which is the final event that occurs when a star is forming?

Answers

Answer:

the outer layer of the star expands

Explanation:

Gravity pulls gas and dust together. A protostar forms as mass increases. A black hole forms as the core collapses.

Answer:

Hence, the final event that occurs when a star is forming is that nuclear fusion begins under high pressure.

Explanation:

50 points!!!!!!!! will mark brainliest

Answers

Answer:

Answer:

correct. its true and I absolutely agree with you. good job

Explanation:

Bc y=2x-1^3 is the equation

Answer:

Mutualism

Explanation:

It's mutualism because mutualism means with both people benefit from something

Hope that helps !

If you cut an apple into slices and leave them in the open air, they will slowly
turn brown. Is this a physical or chemical change? Explain *
O Physical change, because it is still an apple, but it is cut into smaller pieces.
Chemical change, exposure to air has caused the apple to turn color, indicating
something new.

Answers

Answer:

Chemical change, exposure to air has caused the apple to turn color, indicating  something new.

Explanation:

Chemical change, exposure to air has caused the apple to turn color, indicating  something new, because it is not asking if cutting the apples is a physical or chemical change, it is asking if the apples turning brown is a physical or chemical change.

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