When does cell differentiation occur?


when cells express different genes


when cells express all genes


when cells express the same gene


when cells do not express genes

Answers

Answer 1

Answer:

The answer is when the cell express different genes.

Explanation:

Cell differentiation is the process when a cell is changed from one cell type to an other and brings more complexity to the system. A cell before differentiation possess all the genes however their expression in turned off. When some external or internal factors trigger the gene expression it starts the cell differentiation. A multicellular organism undergoes several rounds of cell differentiation during its development. Although cell differentiation changes the size, shape and metabolic activity but the genetic makeup or DNA is never changed during cell differentiation.

Answer 2

Answer:

when cells express differnt genes

Explanation:

When Does Cell Differentiation Occur?when Cells Express Different Geneswhen Cells Express All Geneswhen

Related Questions

PLZ HELP!! An example of a technological advancement that was envisioned by a
science flction writer and has becomea part of everyday life is
OA Space vacations
OB. staircases
OGuniversal translators
)D credit cards

Answers

Answer:

Commenting so you can give the other dude Brainliest. answer is correct :)

Answer:

credit cards

Explanation:

What does an injured person needs immediately?
Doctor
Vehicle
Clear road
First Aid

Answers

First aid is likely an immediate need while things like doctor can come a little later on

Answer:

An injured person needs an first aid ,if the person is not around the hospital the we should call an ambulance and take him to hospsuck

Which two types of organisms are found in the domain Eukarya?
O A. Fungi
O B. Archaea
O C. Plants
O D. Bacteria

Answers

Fungi and Plants are the two types of organisms are found in the domain Eukarya. The correct options are A and C.

Thus, numerous creatures with intricate cell architecture, including a separate nucleus and membrane-bound organelles, are included in the domain Eukarya. This domain includes fungi, which include yeast and mushrooms and are recognized for their distinctive means of getting nutrients and breaking down organic materials.

Algae, trees, and flowering plants all fall under the umbrella of the eukaryotic kingdom. Their capacity to carry out photosynthesis and transform sunlight into energy defines them. Fungi and plants both share key characteristics that set them apart from Archaea and Bacteria, which are members of separate domains and have unique cellular structures and genetic make-ups.

Thus, the ideal selection is option A and C.

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Assuming that the motion of the object remains the same, at what position will the object be when it had traveled for a total of 6 s?
A. 2 m
B. 0 m
C. 1 m

Answers

Answer:

B. 0 m

Explanation:

The graph given is a position - time graphical model of the motion of a body.

The y-axis denotes the position of the body and the x- axis is the time taken.

To solve this problem, since the velocity of the motion is constant and no acceleration, we trace up the point 6s on the x-axis and find the y-axis equivalent.

Completing the graph, the point lies on 0m. At 0m, the object would have traveled for 6s.

Answer:B. 0 m

Explanation:The graph given is a position - time graphical model of the motion of a body.

The y-axis denotes the position of the body and the x- axis is the time taken.

To solve this problem, since the velocity of the motion is constant and no acceleration, we trace up the point 6s on the x-axis and find the y-axis equivalent.

Completing the graph, the point lies on 0m.

At 0m, the object would have traveled for 6s.

Why is the cell like a city?

Answers

Answer:

The cell is basically like a city because there are different parts of the cell that work together to keep a system running, therefore incredibly similar to a cell. There are parts to the cell such as the vacuole which acts as the storage for a cell, like the storeroom or bank in the city, and the lysosome which cleans up and recycles for the cell in away, acting as the recycle center or such for a city. Just like these few cell parts, there are many other parts which each have their respective "role" to functioning as a "city", and for those reasons a cell is like a city.

The cell is like a city because without it it’s nothing and the city is constantly moving and constantly there and so is the cell

can someone do #12 for me

Answers

Answer:

They are in charge of catching sunlight to make sugar,(food), during the process of photosynthesis. Chloroplasts and mitochondria use photosynthesis to capture sunlight, on the other hand, prokaryotic capture their sunlight from other sources of energy.

Explanation:

An early step in the process of carbon fixation combines three molecules of CO2 with three molecules of RuBP to produce three 6-carbon molecules, which are immediately converted to six 3-carbon molecules. These six molecules are phosphorylated and reduced to produce glyceraldehyde 3-phosphate (G3P). What additional events occur to complete the Calvin cycle

Answers

Answer:

release of one G3P to make sugars and regeneration of RuBP

Explanation:

The Calvin cycle can be defined as a part of photosynthesis that utilizes the energy stored by light-dependent reactions to produce three-carbon sugars. The first carbohydrate produced by the Calvin cycle is a three-carbon sugar phosphate called glyceraldehyde-3-phosphate (G3P). Subsequently, G3P is used to produce other sugar molecules such as, for example, glucose. The Calvin cycle consists of three steps: 1-carboxylation (by using CO2 in a reaction catalyzed by Rubisco enzyme), 2-reduction of phosphoglycerate (ATP phosphorylation), and 3-regeneration of ribulose-bis-phosphate (RuBP) by using triose phosphates produced in the first two steps.


Biochemical cycles are an intricate factor for life on earth. They provide consumers and producers with the components they need to live and grow. To a
complex ecosystem such as Earth, environmental changes such as an increase in greenhouse gases can have dramatic effects. However, not all
biochemical cycles are affected equally by such changes.
Which major cycle is LEAST negatively influenced by an increase in greenhouse gases and why?
A.Carbon cycle, because the greenhouse gas is the major component of the carbon cycle.
B.Phosphorus cycle, because it is a biogeochemical cycle and does not involve the atmosphere.
C.Oxygen cycle, because oxygen can buffer greenhouse gases by binding to it and converting it with hydrogen to water.
D.Nitrogen cycle, because the atmosphere already has very low amounts of nitrogen, and greenhouse gas converts nitrogen into nitric
oxide.

Answers

Answer:B. Phosphorus cycle, because it is a biogeochemical cycle and does not involve the atmosphere

Explanation:

What is the cause of the differences in the offspring?

Answers

Answer:

animals with different species interbreed to produce a different and infertile offspring

The diagram below shows the main parts of the respiratory system.
Nose
ch
3
Lungs
Diaphragm
Which of these correctly names the parts of the respiratory system numbered 1
through 5 in the diagram above?
A 1. larynx, 2. pharynx, 3. trachea, 4. bronchi, 5. alveoli
B 1. pharynx, 2. larynx, 3. trachea, 4. bronchi, 5. alveoli
C 1. pharynx, 2. larynx, 3. bronchi, 4. trachea, 5. alveoli

Answers

Answer i belive it is C my frined if not then here a cookie my friend

Explanation:

Cell biology is the field of biology that studies?

Answers

Cell biology is the field of biology that studies cells.

Answer:

Cell biology is the subdiscipline of biology that studies the basic unit of life, the cell. It deals with all aspects of the cell including cell anatomy, cell division  (mitosis and meiosis), and cell processes including cell respiration and cell death.

Explanation:

Which of the following joints are diarthrosis joints? Check all of the boxes that apply. shoulder joint joints in the ankle joints between skull bones cartilaginous joints of vertebrae

Answers

Answer:

shoulder joints

joints in ankles

Explanation:

edgu2020

Diarthrosis joints include the shoulder joint and joints in the ankle.

Diarthrosis joints (also known as synovial joints) represent the most movable type of joints between bones.

In diarthrosis joints, the bones are not physically joined, and therefore they move freely.

Examples of diarthrosis joints are the shoulder, elbow, and ankle.

In conclusion, diarthrosis joints include the shoulder joint and joints in the ankle.

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Describe the nonspecific antimicrobial effects of mucus, lysozyme, and acidic pH. For each of these substances, list where they are found in the body and how they function in fighting pathogens.

Answers

Answer: Non specific defence mechanism are the first lines of general defence that aids in preventing entry and minimising further passage of microbes and foreign materials into the body.

Explanation:

The non specific defence mechanisms protects us against any of enormous range of possible dangers using these methods:

--> defence at body surface

--> phagocytosis

--> natural antimicrobial substances

--> the inflammatory response and

--> immunological surveillance.

MUCUS is a slippery substance which covers the luminal surface of the Lungs. It provides defence at the body surfaces. Incase of any inhaled foreign material through the nose into the lungs, it's usually entrapped by the mucus. It is either coughed up or swallowed.

LYSOZYME: This is a protein with antibacterial properties present in granulocytes, tears and sweat. They are natural antimicrobial substances that destroys the cell walls of bacteria leading to its death.

ACIDIC Ph: The presence of acidic natural substances found in the stomach such as the gastric juice or hydrochloric acid, kills the majority of ingested microbes.

Plant cells and bacteria both have cell walls. Many antibiotics work by breaking down the proteins that make up the cell wall, so bacteria become vulnerable to the human body's immune system.

Answers

Answer:

what do you need to know?

Explanation:

I learned about this in bio last year, maybe I can help

The plant cell wall is made up of cellulose and the bacterial cell wall is made up of peptidoglycan.

What is a cell wall?

The cell wall is a protective covering found in plants and bacteria. When bacterial cell attacks the human system lysozymes are some kind of enzymes that degrades the human system.

Penicillin and lysozyme both affect the cell walls of bacteria. When bacteria divide, penicillin weakens their cell walls, causing them to burst and perish from osmotic pressure.

A little enzyme called lysozyme breaks down a bacterium's protective cell wall by attacking it.

Therefore, The plant cell wall is made up of cellulose, and the bacterial cell wall is made up of peptidoglycan.

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Which factors that affect the Florida peninsula can result from human activity?

O the formation of sand dunes and springs
O the formation of springs and drilling of artesian wells
O the intrusion of salt water and formation of sand dunes
O the mining of phosphate and erosion of the coast

Answers

Answer:

B. the formation of springs and drilling of artesian wells

Explanation:

The second option is the result of human activity because humans are the ones drilling the wells. The other options are formations as a result of natural causes.

Match these items.


1. first nuclear reactor

curie

2. 1/0 n

atomic mass

3. splitting of nuclei into lighter elements

fusion

4. number of neutrons and protons

Fermi

5. builds heavier elements

neutron

6. discovered radioactivity

Becquerel

7. unit of radiation

fission

Answers

Answer:

1. Fermi

2. Neutron

3. Fission

4. Atomic mass

5. Fusion

6. Becquerel

7. Curie

Explanation:

1. The invention of the first nuclear reactor was led by a scientist called ENRICO FERMI.

2. A neutron is a subatomic particle with the symbol "n". It has a mass number of 1 and a charge of 0, hence, it is debited by 1/0n

3. Nuclear fission is the splitting of nuclei into lighter elements.

4. Atomic mass or mass number is the number of neutrons and protons in the atom of an element.

5. Fusion is the building up of heavier elements from smaller ones. It is the opposite of fission.

6. Henri Becquerel is the physcist from France who discovered radioactivity.

7. Curie (Ci) is the unit of radiation, given after the scientist who contributed immensely to radioactivity, called MARIE CURIE.

Answer:

Answer:

1. Fermi

2. Neutron

3. Fission

4. Atomic mass

5. Fusion

6. Becquerel

7. Curie

Explanation:

A small bird gathers pollen and nectar for food, but at the same time is
aiding in the plant's reproduction by spreading pollen to other flowers it
visits. What does this relationship demonstrate? *

Answers

Answer:

Mutualism

Explanation:

In biology, the term symbiosis refers to close and often long-term interactions between organisms that belong to different species. There are three main types of symbiotic relationships:

mutualism - both organisms benefit from their relationshipcommensalism - one organism benefits, while the other doesn't benefit or suffer any harmparasitism - one organism causes harm to the other

In the given scenario, both the bird and plant benefit from their relationship. The bird gets food, while the plant reproduces more easily. This is why their relationship is an example of mutualism.

Describe the difference in the thickness of the endometrium that you should observe when looking at histological samples of the uterus during the secretory phase compared to the uterus during the menstrual phase.

Answers

Answer:

The description including its issue is summarized throughout the clarification paragraph following.

Explanation:

Mostly during the containing period including its menstrual level, maximum density including its endometrium becomes 12 mm greater than the duration including its menstruation period, which would be 1-2 mm. The thing that is different due to all of the secretory granules process strengthens the uterus should help the fetus throughout fertilization which sustains childbirth, however, whenever fertilization doesn't happen, the endometrium starts to deplete such that the consistency is decreased.  

AWNSER ASAP
Identify the two careers that do not require any college education.

dental assistant
dietitian
home health aide
physician assistant
social worker

Answers

Answer:

the two careers that don't require any college education are a dental assistant and a home health aide

Explanation:

using the process of elimination....

a dietitian requires a bachelor's degree,

physician assistant needs a masters degree (in most cases)

social worker needs a bachelor's degree

this means the other 2 remaining options...

dental assistant & a home health aide do not require a college education

how many basic plant cell

Answers

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DONT BELIEVE ME?

THEY STOLE $50 FROM MY GRANDPA'S PAYPAL !!!

Explanation:

There are three basic types of cells in most plants. These cells make up ground tissue, which will be discussed in another concept. The three types of cells are described in Table below. The different types of plant cells have different structures and functions.

xplain how the enteric nervous system supports the digestive system. What might occur that could result in the autonomic nervous system having a negative impact on digestion

Answers

Answer:

It controls gastrointestinal track.

Explanation:

The enteric nervous system supports the digestive system because enteric nervous system controls gastrointestinal track and there is no control of central nervous system (CNS) in this gastrointestinal track. Our gastrointestinal tract comprise of our mouth, esophagus, stomach, small intestine, large intestine, and anus. If abnormality occur in autonomic nervous system which result in negative impact on digestion because autonomic nervous system regulates digestion process.

es and Moion Assessment (Luncn)
12of25
While waiting for the bus you take a seat on the metal bench at the bus stop. The bench feels very cold to you. Why? (AKS 7c DOK 2)
A The warmth in your hands is being transferred to the bench via conduction.
OB. The warmth in your hands is being transferred to the bench via convection.
Oc. The coldness of the bench is being transferred to your hands via conduction.
OD. The coldness of the bench is being transferred to your hands via convection.

Answers

B the warmth from your hands us being transferred

Answer:

C the answer is def c

Explanation:

What does ethidium bromide do?

Answers

Answer: Ethidium bromide is the most commonly used dye for DNA and RNA detection in gels. Ethidium bromide is a DNA intercalator, inserting itself between the base pairs in the double helix. Ethidium bromide has UV absorbance maxima at 300 and 360 nm, and an emission maximum at 590 nm.

Hope this helps....... Stay safe and have a Merry Christmas!!!!!!!!! :D

Enzymes that work in the stomach must adjust to the unique environment by being able to
A. function in an acidic environment
B. function in a neutral environment
C. function in a basic environment
D. function in an acidic and basic environment

Answers

Answer:

D im pretty sure

Explanation:

Enzymes that work in the stomach must adjust to the unique environment by being able to function in an acidic environment.

Which enzyme would most likely function in the stomach?

One or more polypeptide chains of amino acids make up a big protein enzyme molecule. The unique protein folding patterns, which are crucial for enzyme specificity, are determined by the amino acid sequence.

Pepsin and rennin are the two primary enzymes found in gastric juice. While rennin coagulates the soluble milk protein, casein, into an insoluble curd, which is then attacked by pepsin, pepsin breaks down proteins into short polypeptide chains. Pepsin is produced by the chief cells of the stomach as pepsinogen, an inactive zymogen.

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Describe how and why varnishes are used in the restoration process

Answers

Answer: A cavity varnish provides a barrier against fluid penetration into the underlying dentin. When applied to dentin, a varnish may reduce postoperative sensitivity and limit migration of corrosion products into dentin, thereby reducing tooth discoloration. RMGI liner/base products seal the tooth and strongly bond to the restoration to reduce the incidence of microleakage between the tooth and the restoration. ... Reduces postoperative sensitivity — RMGI liner/bases offer a strong bond to the tooth, sealing the tooth structure to protect against microleakage.

Hope this helps...... Stay safe and have a Merry Christmas!!!!!!! :D

Which two layers of earth are made of rock

Answers

Answer:The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.

Explanation:

The two layers are the crust and the upper mantle! Hope this helps!

Please give brainliest❤️

1)In a food chain, with each feeding relationship, the energy transferred from one organism to another will(1 point)

a)remain constant.

b)be independent of the level.

c)increase.

d)decrease.

2)Food chains normally consist of no more than (1 point)

a)six organisms.

b)five organisms.

c)four organisms.

d)three organisms.

3)The black bear is common to North America. Black bears eat many foods, mainly grass, roots, berries, and insects. However, fish and mammals—including those already dead—are also part of their diet. Some tend to wander near campsites and can develop a taste for human food and garbage. Given this information, which term most accurately characterizes black bears? (1 point)

a)decomposers

b)producers

c)omnivores

d)carnivores

4)What is the usual composition of a food chain?(1 point)

a)a decomposer, some producers, and a consumer

b)a decomposer, a producer, and some consumers

c)multiple producers and a consumer

d)a producer and multiple consumers

Answers

Answer: The correct answers are:

1. D

2. C

3. C

4. D

Explanation:

I just took the quiz and these are the correct answers.

In the food chain, the energy transferred from one organism to another will decrease. Food chains consist of more than four organisms. The term shows black bears as omnivores. The makeup of a food chain is a producer and multiple consumers. The correct options are 1. D, 2. C, 3. C, and 4. D.

What is a food chain?

A food chain is the joining of many organisms together with the medium of their food and the transfer of energy to form one organism to another organism.

It consists of producers, consumers, and decomposers. Producers are autotrophs. They are plants and consumers are animals, and other decomposers are bacteria and fungi.

Therefore, the correct options are 1. D, decrease., 2. C, four organisms., 3. C, omnivores, and 4. D, a producer, and multiple consumers.

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please help with this!! it’s just fill in the blank and it has the word bank

Answers

Answer:

top left: centriole

bottom left: Spindle

Top right: homologous chromosomes

bottom right: crossing over of chromosomes

Explanation:

HELP HOW DO I SOLVE THIS

Answers

Answer:

Explanation:

Wht the budget it is hrd right

The relationship between kinetic energy and speed is ____ proportional.

Answers

Answer:

Directly

Explanation:

hope this helps

The relationship between kinetic energy and speed is directly proportional.

What is kinetic energy?

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force.

After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

The human body produces kinetic energy while it is in motion. For instance, when a person runs, their legs and feet build up kinetic energy, which is typically turned to heat.

An object's kinetic energy is directly inversely related to its square of speed. So, the kinetic energy will multiply by four for every twofold rise in speed.

Thus, it can be concluded that kinetic energy is directly proportional to speed.

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Connor is driving on a long road trip. He currently has 9 gallons of gas in his car. Each hour that he drives, his car uses up 2 gallons of gas. How much gas would be in the tank after driving for 3 hours? How much gas would be left after t hours? How does a decrease in thermal energy affect the temperature of each state of matter? What is itSimplify 5(6-3)+2 A pie crust recipe calls for 2 cups of butter for each 3 cups of flour. Ella is making enoughcrusts to use 9 cups of flour. How many cups of butter will she need? Dorman Company reported the following data: Net income $225,000 Depreciation expense 25,000 Gain on disposal of equipment 20,500 Decrease in accounts receivable 14,000 Decrease in account payable 3,600 Prepare the Cash Flows from Operating Activities section of the statement of cash flows using the indirect method. Use the minus sign to indicate cash out flows, cash payments, decreases in cash, or any negative adjustments. How do plate tectonics support evolution Cinco sustantivos comunes de animales acuaticos Twenty seconds after a plane in the air show- dives, it is 300 feet from where it begin. At what rate is the plane diving If you were an ice cream flavor, which would you be? Why?( write at least 3-4 sentences) A bakery made 360 cookies. Twenty percent of the cookies were chocolate chip. How many cookies were chocolate chip A class has girls and boys in the ratio 4:5 .Among the girls, the ratio of mathematics and physics student in the entire class is 3:2 . what percentage of class comprises girls studying mathematics? If a preferred stock from Pfizer Inc. (PFE) pays $4.00 in annual dividends, and the required return on the preferred stock is 8.00 percent, what's the value of the stock?a. $50.00b. $0.32c. $32.00d. $0.50 Find the unit price of each item, rounding answers to the nearest tenth of a cent. A) 4 lbs for $2.37 b) 15 lbs for $8.57 c) 25 lbs for $13.59 Which bag (4, 15, or 25) is the best deal? Look for words related to school. These can be found on horizontally vertically and diagonal circle the words and write them in the blanks Solve the following inequality algebraically.x + 2 < 11 Given the equation representing a reaction: H + H --> H2, explain in terms of energy what is happening as the bond is being formed Question 4 of 10Charging a lower price per unit for purchases of more units is called aA. seasonal discountB. quantity discountC. sale priceD. stocking allowance what is the area of a cube each side is 6 cm Compare using >, he Tattle Teller has a printing press sitting idly in its back room. The press has no market value to another printer because the machine utilizes old technology. The firm could get $250 for the press as scrap metal. The press is six years old and originally cost $148,000. The current book value is $2,570. The president of the firm is considering a new project and feels he can use this press for that project. What value, if any, should be assigned to the press as an initial cost of the new project