the model show's a portion of a DNA strand. What does the pentagon represent in the model?

Answers

Answer 1
the pentagon represents a nucleotide.

Related Questions

Distinguish between smooth endoplasmic reticulum and rough endoplasmic reticulum.

Smooth endoplasmic reticulum has vacuoles attached to its surface.

Smooth endoplasmic reticulum has ribosomes attached to its surface.

Rough endoplasmic reticulum has ribosomes attached to its surface.

Rough endoplasmic reticulum has vacuoles attached to its surface.

Answers

Answer:

Rough endoplasmic reticulum has ribosomes attached to its surface.

Explanation:

Rough endoplasmic reticulum has ribosomes attached to its surface.

and smooth endoplasmic reticulum does not

HELP PLEASE!!!!!!!!!!!!!!!!

Answers

Answer:

Sandatone-1

Igneous Rocks-4

Shale-2

Limestone-3

Explanation:

give an example of a cultured behavior

Answers

Answer: Cultural behavior must involve the use of artifacts. The most famous example in the animal world is the termite stick. Some chimpanzees in Tanzania have learned to fish termites out of their nests using sticks. Everything they see, touch, interact with and think about is cultural.

Explanation:

is this what you mean? if not im so so so sorry and i can try again

4. Mutations that occur in gametes:
A. May be passed on to future generations
B. Can be important in the evolution of a species
C. Affect the functioning of the gene in which they occur
D. All of these are correct.

Answers

Answer:

Technically C is not entirely correct. But the answer is probably D

Explanation:

Mutations that occur in gametes:

A. May be passed on to future generations

-Correct mutation in gametes(sex cells) can be passed onto future generation.

B. Can be important in the evolution of a species

-Yes, it can lead to different phenotype that may be important to evolution of a species.

C. Affect the functioning of the gene in which they occur

->it can affect the functioning of the gene, but it can be silent mutation or mutation in intron

D. All of these are correct.

What is one important difference between savannas and temperate grasslands? A. Savannas only rarely experience fires. B. Temperate grasslands are mostly treeless. C. Savannas are inhabited by grazing mammals. D. Temperate grasslands have nutrient-poor soil.

Answers

The one important difference between savannas and temperate grasslands

is that Temperate grasslands are mostly treeless.

Temperate grasslands have varying types of plants and animals in the

region. They have very few trees and are mainly dominated by grasses.

The temperate grasslands have lesser amount of rainfall than the

savannas.

The Savannas have different types of plants ranging from shrubs to

woody trees. The temperate grasslands have nutrients due to the

formation of organic matter from dead plants leaves and roots and aren't

generally regarded as having nutrient poor soil.

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To study the mechanism of DNA replication, Meselson and Stahl labeled both strands of a DNA molecule with nitrogen-15 and then tracked the location of this label after one round of replication. which composition describes the products they found?

A. Both double helixes were composed of small segments of the
original strands and small segments of new strands.
B. Both double helixes were composed of large segments of the
original strands and large segments of new strands.
C. Both double helixes were composed of one original strand and
one new strand.
D. One double helix was composed of the two original strands, and
the other was composed of two new strands.

Answers

Answer:

The answer is C.

Explanation:

The original strand is split apart in half, those are added to two new strands. Which makes each double helix part original and part new strand. This is the correct answer, as I just took the test.

The comparison of two bullets is possible with the comparison microscope. Such a study is made difficult by the fact that:

Answers

Answer:

The presence of grit and rust can to some degree alter the markings on bullets fired through the same barrel.

Explanation:

Using 3-5 sentences explain how human activties can affect climate change.

Answers

Answer:

Human activities can affect climate change because of just how much waste we produce. One huge example is our burning problem, which slowly strips away at the ozone layer that protects animals from heat and melting snow. Because of the ozone layer, the arctic has been protected for many years but now it's slowly disappearing, melting ice and killing animals who have not learned to survive in such hot weather. Another example is when humans cut down too many trees to sustain the environment; it often causes a massive lack in natural oxygen and unroots many homes of small critters and worms. In conclusion, humans can heavily affect climate change because of our ignorance and how we refuse to learn for the future.

Explanation:


Potassium nitrate forms potassium oxide,
nitrogen, and oxygen in certain fireworks.
4KNO3 → 26,0 + 2N2 + 502
This reaction is classified as a
A. combustion reaction.
B. decomposition reaction.
C. single-replacement reaction.
D. synthesis reaction.

Answers

Answer:

A. combustion reaction.

Explanation:

If you light a firework there's more than just a single reaction

Answer:

A. combustion reaction.

Explanation:

Fireworks explode, or combust in the air. Logicly I would classify this as an combustion reaction.

what happened to the urine volume when the solute gradient in the interstitial space was increased?

Answers

The urine volume decreased when the solute gradient in the interstitial

space was increased.

The solute gradient in the interstitial space being increased means more

absorption of compounds into the bloodstream and vice versa. When this

occurs, the constituent of urine decreases.

The decrease in the urine components brings about a decrease in its

volume also due to increased absorption taking place.

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agonists generally _______ activity at the synapse while antagonists generally ______ activity at the synapse.

Answers

Agonists activate the receptor thereby increasing activity at the synapse while antagonists generally prevent agonists from activating the receptors thereby decreasing activity at the synapse.

An agonist is the component that has the ability to increase the activity carried out by another substance.

The agonists work from their faculty of coupling to a cell-type receptor, in this way, they manage to generate a certain action in the cell.

The antagonists are the compounds that cause the opposite when they bind to the receptor, they cause a blockade by decreasing the activation of a synaptic receptor.

Therefore, we can conclude that agonists are compounds capable of increasing the action of synapse and blockers (antagonists) decrease activity at the synapse.

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Which is not a source of carbon dioxide gas?

Answers

Answer:oxygen.

Explanation: Photosynthesis does not produce carbon dioxide. It takes up carbon dioxide and water and releases oxygen.

what is a probable reason that a trait skips a generation?

Answers

What is a probable reason that a trait skips a generation? The trait is recessive.

PLEASE HELP: EARH SCIENCE
Which is an accurate statement about the different types of radiation emitted by the Sun? Select the two correct answers

Radiation with the shortest wavelengths is emitted steadily and constantly from the sun.

Radiation with the longest wavelengths is emitted steadily and constantly from the sun.

Radiation with the longest wavelengths is most likely to cause wide variation in Total Solar Irradiance.

Radiation with the shortest wavelengths is most likely to cause wide variation in Total Solar Irradiance.

Answers

Answer:

Radiation with the longest wavelengths is emitted steadily and constantly from the sun.

Radiation with the shortest wavelengths is most likely to cause wide variation in Total Solar Irradiance.

Radiations with the longest wavelengths is emitted steadily and constantly from the Sun and the radiations with the shortest wavelengths is most likely to cause wide variation in the total solar irradiance. Thus, the correct options are B and D.

What are the solar radiations?

Solar radiation is often called as the solar resource or simply sunlight. It is a general term which is used for the electromagnetic radiations that are emitted by the Sun. Solar radiations can be captured and turned into useful forms of energy, such as heat and electricity, using a variety of different technologies.

The radiations with the longest wavelength is emitted steadily and constantly from the Sun and the radiations with the shortest wavelengths is most likely to cause wide variation in the total solar irradiance.

Therefore, the correct options are B and D.

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Which phase of the cell cycle is longest? What phase of the cell cycle is the shortest?

Answers

Answer:

Interphase is the longest and metaphase is the shortest usually

Explanation:

Answer

The longest phase of the cell cycle is Interphase

The shortest phase of the cell cycle is the Mitotic phase

Explanation

In case of cells with a nucleus, the stages of the cycle are divided into two phases: Interphase and the Mitotic (M) phase.

During Interphase the cell grows and makes a copy of its DNA before moving into Mitosis.

During Mitotic phase the cell separates its DNA into two sets to create two genetically identical daughter cells.

7. Identify the part of the human digestive system.
a) Site where digestion begin:
b) Site of final digestion:
c) Peristalsis:
d) Absorption of digested food:
e) Absorption of water:

Answers

Answer:

d

Explanation:

absorption of digested food

It’s b
Site of final digestion

How does your body respond to a decrease in blood glucose

Answers

Answer:

When blood sugar drops too low, the level of insulin declines and other cells in the pancreas release glucagon, which causes the liver to turn stored glycogen back into glucose and release it into the blood. This brings blood sugar levels back up to normal.

Explanation:

hope this helps!

MERRY CHRISTMAS AND HAPPY NEW 2022 YEAR! GOD BLESS YOU!!!

Answer:

Glucose is a sugar that comes from the foods we eat, and it's also formed and stored inside the body. It's the main source of energy for the cells of our body, and is carried to each cell through the bloodstream. Our brains depend on glucose to function, even when we're sleeping.

The blood glucose level is the amount of glucose in the blood. When these levels (also called blood sugar levels) drop too low, it's called hypoglycemia (pronounced: high-poe-gly-SEE-me-uh). Very low blood sugar levels can cause serious symptoms that need to be treated right away.

Low Blood Sugar Levels in Diabetes

People with diabetes can have low blood sugar levels because of the medicines they have to take to manage their diabetes. They may need a hormone called insulin or diabetes pills (or both) to help their bodies use the sugar in their blood.

These medicines help take the sugar out of the blood and get it into the body's cells, which makes the blood sugar level go down. But sometimes it's a tricky balancing act and blood sugar levels can get too low.

People with diabetes need to keep their blood sugars from getting too high or too low. Keeping blood sugar levels in a healthy range means balancing when and what they eat, and when they exercise with when they take medicines.

Hope this helps...;-]

Explanation:

How does farming creates job for people?

Answers

Farming causes a chain reaction: farmers supply crops/meats to distributors, distributors sell crops/meats in bulk to grocery stores, and those in the food industry can obtain their produce through the mentioned grocers. Restaurants rely on grocers, who rely on distributors, who rely on farmers.

Farmers grows plants/crops and meats for us to eat. They provide us dairy items, such things as milk, cheese, and yogurt. They also sell fur from certain animals such as, cows and goats.

How body responds when the body temperature increases

Answers

When body temperatures rise, the body reacts by increasing blood flow to the skin's surface, taking the heat from within the body to the surface. This means sweat. As the sweat evaporates, the body cools down.

When the temp rises the body reacts a certain way , which is increasing blood flow into the skin surface.

Briefly summarize the structure of a fern

Answers

Answer:

The structure of a fern. Ferns have 3 major parts – the rhizome, the fronds and the reproductive structures called sporangia. ... An erect rhizome, which is a solid mass that gives rise to a tuft of fronds. You can see this type of rhizome on a king fern or a crown fern.

Explanation:

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Can somebody help please due today

Answers

Answer:

Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. Their ages can be established by comparing the fossils in each layer.

Answer:

Explanation:

Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. Their ages can be established by comparing the fossils in each layer.

Credits to the person under me i just need points

(pretty sure its correct tho)

f(x)=(7x-2)(5x-8)(x+5)(x-6) has zeros at x=-5, x=2/7, x=8/5, and x=6.


What is the sign of f on the interval -5

Choose 1 answer:

(A) f is always positive on the interval.

(B) f is always negative on the interval.

(C) f is sometimes positive and sometimes negative on the interval.

Answers

Answer: always negative) :p

Explanation: khan :)

Answer:

always negative!

Explanation:

Please i need help with this....

Answers

Answer:

Punnett squares

W is dominant

w is recessive

       W            w

W    WW        Ww

w     Ww        ww

Explanation:

Punnett squares

W is dominant

w is recessive

       W            w

W    WW        Ww

w     Ww        ww

which body systems work together to provide oxygen to all cells within a human organism?

Answers

Answer:

Explanation:

For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.

Answer:

The respiratory and circulatory

Explanation:

The respiratory system allows for someone to breath and The circulatory system picks up oxygen in the lungs and drops it off in the tissues, then performs the reverse service for carbon dioxide.

The coat that surrounds the genetic material of a virus is made of what material? (
1 point) protein, cells, RNA, DNA

Answers

Answer:

Protein

Explanation:

The protein-covered coat that surrounds the genetic material of a virus is called a capsid.There are mainly three structural shapes of a capsid : Icosahedral ProlateHelicalThe functions of capsid includes:Protection of viral genome i.e., either DNA or RNA from dissolution.Helps in penetration of virus in host cells.

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Answer:

the answer is protein

Explanation:

HELP HELP HELP I REALLY NEED THIS

Answers

Answer:

d

Explanation:

i think since more step

The first fuel Paul’s body uses is ________________________ from Paul’s last meal, which are stored in his _____________ & his ______________ (technically the bits in his BLOOD are used up before that even). The body turns them into ____________, which is burned in ____________. That fuel lasts Paul about ________________.

Answers

1. The first fuel Paul’s body uses is carbohydrate, which is generated from Paul’s last meal.

2. These carbohydrates are stored in his liver and muscles (technically, the bits in his blood are used up before that even).

3. The body turns the carbohydrates into glucose, which is burned in mitochondria during an aerobic cellular respiration.

4. That fuel lasts Paul about 3 miles, 40 minutes ([tex]\frac{2}{3} \;hours[/tex]).

A fuel can be defined as the resources that power the body of a living organism such as a human being. Also, the three (3) main types of fuel that power the human body include the following:

OxygenWaterFood

Fat is a nutritional element of food and it is beneficial to the body of a living organism because after the body exhausts its carbohydrates, it then uses its own fat as a fuel to power the body.

In this context, the first fuel Paul’s body uses is carbohydrate, which is generated from Paul’s last meal. These carbohydrates are stored in his liver and muscles (technically, the bits of carbohydrates in his blood are used up before the storage).

Furthermore, the body turns the carbohydrates into glucose, which is burned in mitochondria during an aerobic cellular respiration. Also, the fuel would only last Paul for a distance of about 3 miles, 40 minutes ([tex]\frac{2}{3} \;hours[/tex]).

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Complete the sentence. City leaders can protect environmental quality by choosing __________ like shoreline vegetation to protect their coastal communities.

sea walls
extra sand
carbon reduction
natural solutions

Answers

Answer:

natural solutions

Explanation:

Shoreline vegetation is a natural filter that helps the environment.

Which of the three types of RNA is
involved directly with the process of
transcription?
A. transfer RNA (TRNA)
B. ribosomal RNA (TRNA)
C. messenger RNA (mRNA)

Answers

MRNA is involved directly in transcription

Large areas on the leaves of some plants lack chlorophyll and are therefore not green in color. How does this most likely affect photosynthesis

Answers

The plant stop growing because the plant needs chlorophyll for energy
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