What controls the cell cycle at key checkpoints?

Answers

Answer 1

Answer:

Two groups of proteins called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress of the cell through the various checkpoints. The levels of the four cyclin proteins fluctuate throughout the cell cycle in a predictable pattern

Explanation:

I hope this helped you!


Related Questions

Which structure is part of the endomembrane system?

Answers

Answer:

The main components of the endomembrane system are endoplasmic reticulum, Golgi apparatus, vesicles and cell membrane and nuclear envelope.

Hope this helps out

Explanation:

The Endoplasmic reticulum is a part of the endomembrane system in eukaryotic cells.

What do you mean by Endomembrane system?

The Endomembrane system may be characterized as a series of membranes and organelles in eukaryotic cells that significantly functions together in order to alter, package, and transport lipids and proteins within the components.

Apart from the endoplasmic reticulum, the Golgi apparatus, lysosomes, vacuoles, etc. are also included in the category of the endomembrane system in eukaryotic cells.

The plasma membrane is also part of the endomembrane system. This is because the plasma membrane remarkbly interacts with the other endomembrane organelles.

Therefore, the Endoplasmic reticulum is a part of the endomembrane system in eukaryotic cells.

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Your question seems incomplete. The complete question is as follows:

Which structure is part of the endomembrane system?

Mitochondria.Endoplasmic reticulum.Chloroplast.Peroxisomes.

A plant native to the chaparral would be expected to __________.
A)
require frequent rainfall
B)
tolerate nutrient-poor soil
C)
have large, soft leaves
D)
be tall with large branches
E)
have thick, very hard stems

Answers

A) Require frequent rainfall.

This is because it cannot survive in dry lands without constant water.

Answer:

A. require frequent rainfall

Explanation:

edge 2020

24. The wires carrying electricity are not strung tightly. Justify​

Anybody send me the answer

Answers

Answer:

The wires used in lines are made up of metals such as copper, metals are used because they conduct heat and electricity.

Metals expand when there is increase in temperature and contract when the temperature lowers down, the wires get heated up due to high voltage of electricity that flows through it that increases the vibration of atoms in a metal and leads to rise of temperature. That is why the metala are not strung tightly.

explain what is happening in the moss, the fern, the pine and the angiosperm

Answers

Answer:

nating

Explanation:

nating because never seen some in world

Question (1): Explain how the earliest philosophers arrived at the conclusion that "this primary entity
(arche) always persists".

Answers

The leaders of the earliest philosophers were Socrates and Aristotle. This led the thinkers who arrived at the conclusion regarding the Primary Entity.

What was the proof for the conclusion of the Primary Entity?

Their logic for arriving at the above conclusion that "the primary entity (arche) always persists)" was that, since nothing can be completely annihilated or truly generated from the origin, but each returns to it's origin if they are destroyed, then it means that the primary entity must always persist.

In simple language, nothing is either destroyed or created.

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What does a terminator sequence do?
A. tells the DNA strand to attach to RNA polymerase
B. tells RNA polymerase to STOP transcription
C. tells RNA polymerase to START transcription
D. tells the nucleus to remove RNA polymerase from the
DNA strand

Answers

D. Tells the nucleus to remove RNA polymerase from the DNA strand

As a vector for the introduction of nonnative species, why is hull fouling particularly difficult to combat?

Answers

Vectors are the transfer mechanisms responsible for the introduction and spread of invasive species in a certain area, including a wide variety of physical means or agents.

What is nonnative species?

Nonnative species are organisms that do not occur naturally in an area, but are introduced as the result of deliberate or accidental human activities.

Recreational boating and commercial shipping are an immense source of revenue and commerce around the world. Therefore, the need to protect the environment must be balanced against the needs of individuals and communities to earn a living. People who financially benefit from these industries do not want too many obstacles erected in the way of such businesses.

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Answer:

Recreational boating and commercial shipping are an immense source of revenue and commerce around the world. Therefore, the need to protect the environment must be balanced against the needs of individuals and communities to earn a living. People who financially benefit from these industries do not want too many obstacles erected in the way of such businesses

Explanation:

Describe and give and example of a fibrous joint, a cartilaginous joint, and a synovial joint.

Answers

Articulaciones sinoviales

Las articulaciones sinoviales son conexiones entre componentes esqueléticos en las que los elementos implicados se encuentran separados por una estrecha cavidad articular. Además de incluir una cavidad articular, estas articulaciones tienen varios rasgos característicos.

En primer lugar, una capa de cartílago, habitualmente cartílago hialino, cubre las superficies articulares de los elementos esqueléticos. En otras palabras, las superficies óseas no contactan normalmente entre sí de forma directa. Como consecuencia, cuando se ven estas articulaciones en radiografías normales, un amplio intervalo parece separar los huesos adyacentes, porque el cartílago que cubre las superficies articulares es más transparente a los rayos X que el hueso.

Una segunda característica de las articulaciones sinoviales es la presencia de una  cápsula articular  consistente en una  membrana sinovial interna  y una  membrana fibrosa externa:

La  membrana sinovial se fija a los márgenes de las superficies articulares en la interfase entre el cartílago y el hueso, y envuelve la cavidad articular. La membrana sinovial está altamente vascularizada y produce líquido sinovial, que se acumula en la cavidad articular y proporciona lubricación a las superficies articulares. También aparecen sacos cerrados de membrana sinovial fuera de las articulaciones, donde forman bolsas sinoviales o vainas tendinosas. Las bolsas se interponen a menudo entre estructurahttp tendones y hueso, tendones y articulaciones, o piel y hueso, y reducen la fricción de una estructura al moverse sobre otra. Las vainas tendinosas rodean los tendones y también disminuyen la fricción.

La  membrana fibrosa está formada por tejido conjuntivo denso y rodea y estabiliza la articulación. Partes de la membrana fibrosa pueden verse engrosadas para formar ligamentos, que estabilizan aún más la articulación. Los ligamentos externos a la cápsula suelen aportar un refuerzo adicional.

fibrous joint - would be your knee cap or your vertebrae

synovial joint- your wrist or ankle

cartilaginous- The joint in between your manubrium and sternum

PLZ HELP YALL......................

Answers

Answer:

The three domains are the Archaea, the Bacteria, and the Eukarya

I would select Eukarya

Answer:

Eukarya

Explanation:

Since this is biologically, the broadest term for a living organism out of the three other choices.

ators
4 Support Your Claim Can you use a
thermometer to measure thermal energy?
Support your claim with evidence.

Answers

Yes you can I am pretty sure and also add me as a friend lol I need friends and I’m bored lol

Why are seeds an evolutionary advantage for seed plants?
Seeds allow for the transport of water and nutrients.
Seeds develop into adults without sexual reproduction.
Seeds protect and nourish young, growing plants.
Seeds provide the materials for photosynthesis.

Answers

Answer:

SEEDS ALLOW THE TRANSPORT OF WATER AND NUTRIENTS.

Explanation:

several layers of hardened tissue prevent desiccation, freeing reproduction from the need for a constant supply of water. Seeds contain an embryo that allows them to remain dormant until such time that their environmental conditions improve before they can grow and develop into plants.

Answer:

A. Seeds allow transport

Explanation:

Cuz

Which cells in plants are similar to stem cells in a human embryo?

1-Parenchyma cells

2-Collenchyma cells

3-Epidermal cells

4-Meristematic cells​

Answers

Epidermal cells 3 is the right answer

What type of amino acids would you expect to see in the DNA-binding regions of such proteins?
Match the terms in the left column to the appropriate blanks in the sentences on the right.
Not all terms will be used.
DNA -binding regions of the proteins of the study would likely contain D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. charged amino acids, such as D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content., D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content.. Electrically charged, D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. side chains of these amino acids would bind to DNA, which is D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. charged, due to the D N A-binding regions of the proteins of the study would likely contain blank charged amino acids, such as blank, blank. Electrically charged, blank side chains of these amino acids would bind to D N A, which is blank charged, due to the blank content. content.

Answers

Answer:

The type of amino acids I would expect to see in the DNA binding regions of such proteins are AMINO ACIDS THAT ARE POSITIVELY CHARGED AT pH 7.

Explanation:

In DNA-binding regions of proteins, it is expected to see basic positively charged amino acids.

In the example above:

DNA-binding regions of the proteins of the study would likely contain positively charged amino acids, such as lysine and histidine. Electrically charged, positive side chains of these amino acids would bind to DNA, which is negatively charged, due to the phosphate group content.

The deoxyribonucleic acid (DNA) is a negatively charged molecule due to the presence of the phosphate groups.

In the phosphate backbone of the DNA molecule, each phosphate group contains one negatively charged oxygen (O) atom.

In proteins, lysine (K), arginine (R) and histidine (H) amino acids are positively charged due to the properties of their side chains.

Moreover, aspartic acid (D) and glutamic acid (E) are negatively charged amino acids.

In conclusion, in DNA-binding regions of proteins, it is expected to see basic positively charged amino acids.

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For decades scientists have been perplexed by different circumstances surrounding families with rare, early-onset auditory neuropathy (deafness). In some families, parents and grandparents of the proband have normal hearing, while in other families, a number of affected (deaf) family members are scattered throughout the pedigree, appearing in every generation.

Required:
Assuming a genetic cause for each case, offer a reasonable explanation for the genetic origin of such deafness in the two types of families.

Answers

Deafness in the two types of families occurs through a recessive gene.

What Heredity?

Heredity is the transmission of inherited characters from parents to offspring through the genes.

Inherited traits may be due to dominant or recessive genes.

Triats inherited through dominant genes are always expressed in every generation.

Triats inherited through recessive genes do not always appear one every generation.

Since deafness appears in some members of the family and not in others, it means that deafness is inherited through recessive genes.

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Question 3 Which of the following provides the best evidence that organ systems in the human body interact with one another? Shivering in response to sensing of cold environment Storing waste products for later elimination Breaking down nutrients from ingested food Exchanging of gases with the atmosphere​

Answers

Answer:

its a

Explanation:

a is correct because shivering is a response to the cold and it happens with ur circulatory and nervous systems.

Mutation occurs and the GGA coden is changed to GGA. What effect does the substitution have on the amnio acid?

Answers

Answer:

The replacement of a base at a codon, as occurs when the GGA codon is changed to CGA, causes a change in the amino acid glycine to arginine.

Explanation:

Nitrogen base changes in a codon usually result from base changes in the DNA before transcription into messenger RNA, called point gene mutations.

In the case presented, the substitution of the guanine base by cytosine in the GGA codon —resulting in a CGA codon— generates a change in the coding amino acid, resulting in arginine instead of glycine.

The change of an amino acid in a peptide or protein can mean an alteration in the structure or function of these molecules.

Because an amino acid can be encoded by several codons, changes of a nitrogen base at a codon sometimes do not involve changes in the amino acid sequence of a protein.

what i can do to save the earth?​

Answers

Answer:

Recycle

Explanation:

U can also use led lights, they consume less and dont waste that much energy. There are lots of more things, im pretty sure u will find tons in google! Hope i helped

Answer:

reduce,reuse,recycle,upcycle

Explanation:

The following diagram shows the branching tree for four kingdoms and some of their shared derived characteristics.

A slanting line is shown. There are four lines drawn vertically on this line at equal intervals. There is a black circle between each pair of these vertical lines. Protists, Plants, Fungi, Animals are written on top of each vertical line in order from left to right. Common Cell is written on the left-most end of the sloping line. The second black circle has Mostly Multicellular written on it. The third black circle has X written on it.

What shared characteristic can be written at point X? Use complete sentences to explain your answer.
answer easily and understandably for 11-year-old and 12s

Answers

Answer:

The answer would be "plant-like protists". These protists make their energy on sunlight. This would make them a protist and a plant-like cell.

Explanation:

Answer:

That it could be like plant like protists because it is in the middle of the two.

Explanation:

When energy is lost in energy transformations, this energy is usually lost as _____.

A: Cooling
B: Heat
C: Ice
D: Power

Answers

Answer:

B

Explanation:

Energy is heat, and when you lose energy, you give out heat.

Answer:

Heat!

Explanation:

Heat is the most dissipated form of energy.

Hope this helps! Let me know if I could help further or if I made any mistakes.

5. In Genetic Drift Beetles, the genetic drift event reduces the beetle population size to two beetles at random. Once the beetle population is smaller, which force of evolution takes over to cause changes in allele frequency in the next generations? *
1) non-random mating
2) gene flow
3) genetic drift (small population)
4) mutations
5) natural selection (adaptation)

Answers

Answer:

3) genetic drift (small population)

I hope this helps you

:)

What are the signaling processes in animal and plant cells? Is there any differences?

Answers

Plant cells are the building blocks of plants. Photosynthesis is the major function performed by plant cells. Photosynthesis occurs in the chloroplasts of the plant cell. ... A few plant cells help in the transport of water and nutrients from the roots and leaves to different parts of the plants.


All animals – no matter what their size– are made up of tiny cells. Each one of these cells can grow, reproduce, respond to changes in the environment, move, and metabolize food for fuel. ... Tiny structures inside the cell called organelles work together to carry out all the cell's life functions.

A difference between plant cells and animal cells is that most animal cells are round whereas most plant cells are rectangular.Plant cells have a rigid cell wall that surrounds the cell membrane. Animal cells do not have a cell wall. When looking under a microscope, the cell wall is an easy way to distinguish plant cells.

In a human somatic cell (normal body cell) that is in G2, what would be true about chromosome number and structure?

a. These cells would be considered haploid (n).
b. These cells would be considered diploid (2n).
c. These cells would be considered tetraploid (4n).
d. These cells would contain homologous chromosomes.
e. These cells would contain sister chromatids.
f. The chromosomes will be aligned in the middle of the cell.

Answers

Answer:

Somatic cells contain 46 chromosomes, as opposed to gametes/se,x cells which have 23. These chromosomes are found in diploid pairs.

Explanation:

PLEASE HELP WITH THIS

Answers

Answer:

it will fight the cancer cells by attecking thecells

Explanation:


What gas in the air is used by plants to make their own food? (2 points)
O Water vapor
O Oxygen
O Carbon dioxide
Nitrogen

Answers

C: Carbon dioxide nitrogen

Answer:

Photosynthesis is the process by which plants make their own food. Plants use carbon dioxide.

and water vapor in the presence of sunlight to make their own food. This process is called photosynthesis. In this process, oxygen is released into the atmosphere.

your answer is C/3, Carbon dioxide.

A reptile in the Everglades mush___??
A. Be very large
B. Eat other animals
C. Live on land
D. Try and stand out

Answers

Answer:

B

Explanation:

the only one that makes sense

Which statement about force is incorrect?

A. Some forces keep objects around us from moving.
B. Some forces cause objects around us to move.
C. Force is the ability to change motion and transfer matter.
D. Force causes changes in the motion and energy of matter.​

Answers

force causes changes in the motion and the energy of matter

HELP ME OUT PLS!!!!!!

Phase of the moon where only a very small part of the lit surface is seen from Earth.

O Gibbous

O Quarter

O Crescent

O Full​

Answers

Answer:

Quarter

Explanation:

I believe thats the correct answer

Answer:

This phase is known as the "Quarter moon"

Explanation:

Which of the following is true about mangroves?
A)
Mangroves got their name from the monkeys that inhabit the areas.
B)
Mangroves grow on low-energy coasts.
C)
Mangrove forests help mitigate storm damage.
D)
The world’s largest remaining tract of mangrove forest is in Australia.
E)
Mangroves have only one type of root system.

Answers

Answer:

E. Mangroves have only one type of root system

Explanation:

Mangrove species are those species of plants found in a saline environment. The soil they are found is usually shallow and swampy (water-logged). They possess characteristics feature that helps them adapt and survie in their habitat.

One of those features is the possession of PNEUMATOPHORES OR BREATHING ROOTS, which is a kind of root system that extends out so that the pores on them can allow the intake of gases directly from the atmosphere.

The statement that is true about mangroves is that mangrove forests help mitigate storm damage. The correct answer is option C.

Mangroves are a type of coastal tree that are able to grow in saltwater. They are found in tropical and subtropical regions around the world, and they play an important role in coastal ecosystems.

Mangrove forests are able to mitigate storm damage by acting as a natural barrier against storm surges and waves. The dense root system of mangroves helps to stabilize shorelines and prevent erosion, while the trees themselves can absorb a significant amount of the energy from storm waves. Mangroves are also important habitats for a variety of marine and terrestrial species, including birds, fish, and reptiles.

Therefore, the statement that best describes mangrove forest is option C.

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g _______________ is the first amino acid in eukaryotic translation. Group of answer choices N-formylmethionine NONE OF THESE are good answers the translation start site AUG methionine

Answers

Methionine is the first Amino acid in eukaryotic translation.

What is Amino Acid?

Amino acid are building blocks of protein.

Amino acid are classified as either essential or non essential Amino acids.

Examples of Amino acid are methionine, lysine,leuscine and so on.

Methionine is a type of essential Amino acids that is found in eukaryotic animals.

It help in metabolism and health in species of animals.

Eukaryotic animals have tRNA that help to recognise the start of codons and it insert methionine and making it the first Amino acids.

Therefore, Methionine is the first Amino acid in eukaryotic.

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Because living beings are the same and at the same time different

Answers

Answer:

Explanation:

Living beings are an individual being, with alive by which it denotes its name, we have a life cycle and a feeding cycle that nourishes part of our organism, however this does not mean that we are the same in everything.

There are living beings suitable for different environments of life, sea, ice, heat, land, and these are the factors that differentiate us, many of these species only live under the water they breathe through trach and not a breathing system like that of dogs. example.

This is one of many differences, we are living beings but we do not have the ability to clean the atmospheric air as silver does with CO2.

The differences are multiple and vary in themselves for each living being on planet earth.

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The class scores of a history test have a normal distribution with a mean Mu = 79 and a standard deviation Sigma = 7. If Opals test score was 72, which expression would she write to find the z-score of her test score?. help me please important Ann would like to find all the data that has the least errors. What should Ann do?*use clustering datamining*use regression datamining*conduct a query*filter the data A small crystal is added to a solution and it sinks to the bottom of the beaker. What can this tell you about the original solution? A. It is saturated because the crystal will not sink to the bottom of the beaker. B. It is supersaturated because the crystal sank to the bottom of the beaker. C. It is saturated because when the crystal was added to the beaker, the entire solution turned into a solid. D. It is unsaturated because the crystal did not dissolve in the solution. Basic Properties of AnglesMeasure the angle in degrees.120-13007140-OgOZ1504160-OT70-180The angle measure is can someone help me its very urgent due soon! What is an easy definition of Vaporization, Sublimation, Deposition and Condensation What is the slope of the line? Is this statement true or false?Ore is a chunk of rock that contains a large amount of metal. Most minerals come from rock that is mined from the Earths crust^,^ Read a paragraph about the novel Don Quixote and answer the questions below. Please type your response in Spanish. El libro Don Quijote de la Mancha ha sido una marca representativa de la literatura espaola a lo largo de los aos. Alonso Quijano, un hidalgo pobre de la regin de la Mancha, de tanto leer novelas de aventura enloquece, cree que es un caballero y se nombra a s mismo Don Quijote de la Mancha. Don Quijote conoce a la perfeccin los libros de este gnero, sus dilogos y los personajes. El libro nos presenta a Don Quijote como un hroe loco. Tiene intenciones de ayudar a los pobres y desfavorecidos y conseguir el amor de la campesina Aldonza Lorenzo a quien l llama Dulcinea del Toboso. Con Sancho Panza, su dedicado escudero, se larga a recorrer el mundo y empiezan sus aventuras. Enloquece de tal manera que ataca a los molinos de vientos o confunde un rebao con un ejrcito. Esta maravilla de Miguel de Cervantes nos introduce en un mundo de fantasa, aventura y caballera. Qu tipo de libros lea Don Quijote? Antes de nombrarse Don Quijote cmo se llamaba? Quin era el dedicado escudero de Don Quijote? I need help pls asap due soon which of the following is a prime number a23 b49 c 69 d27 7+5m=48Whats the answer Which sentence signals to readers that Anna has basketball practice only under certain conditions? A.If her teammates show up, Anna will have basketball practice. B.Though basketball practice was starting, Anna was at home, and she wasn't leaving. C. The gym is open, and Anna had basketball practice. D. Anna loved going to basketball practice. richard built a model of a ferris wheel the model has a height of 18 cm the actual ferris wheel has a height of 72m what scale factor did richard use for the model Describe how Everyman is representative of Medieval Theatre and the impact this play may have had upon the society of the time. Feudalism grew weaker when a. trade and industry grew. b. larger manor houses were built. c. peasants began to outnumber nobles. d. the power of the church increased. what is 0.846 in a fraction 130/240 in its simplest form historical experiences of North Korea