where did the extra chromosome in down syndrome come from?​

Answers

Answer 1
Down syndrome results when abnormal cell division involving chromosome 21 occurs. These cell division abnormalities result in an extra partial or full chromosome 21.

Related Questions

With as much as detail as possible, give another example of an analogy for describing the difference between prokaryotic cells and eukaryotic cells

Answers

i have pdf of differences if you want i can send you

Prokaryotic cells have no membrane bound nucleus while eukaryotic cells have membrane bound nucleus

A golfer collected data on the distance a gold cart traveled in a straight line and plotted it on a graph

Answers

Answer:

linear graph

Explanation:

What prediction can you make about softness of potassium and vigor of its reaction with water?

Answers

Answer:

Chemical properties of the alkali metals

Atoms of group 1 elements all have one electron in their outer shell. This means that the alkali metals all have similar chemical properties.

Reactions with water

The alkali metals react with water to produce a metal hydroxide and hydrogen. For example, sodium reacts with water:

Sodium + water → sodium hydroxide + hydrogen

2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)

Sodium hydroxide is an alkali. It is a base that dissolves in water to form an alkaline solution. This solution:

has a pH greater than 7

turns universal indicator solution blue or purple

Hydrogen gas is also produced. With very reactive metals such as potassium, the energy of the reaction causes the hydrogen to burn as the reaction takes place.

Explanation:

Answer:

potassium reacts rigorously with cold water. potassium is a soft metal. we can predict that potassium is a highly reactive metal.

Explanation:

hope this helps

A worker who harvests vegetables would be susceptible to which of the following combinations of hazards?
-unsafe equipment and falls
-noise and vehicle injuries
-unclean conditions and respiratory risks
-heat and muscle injuries

Answers

Unsafe equipment and falls

Answer:

heat and muscle injuries

Explanation:

edge 2020

True or False: Diffusion requires energy input to occur.

Answers

Answer:

False

Explanation:

Diffusion does not require energy input from the cell. Diffusion transports water across the cell membrane.

Answer:

If you are talking about simple diffusion, the answer is false, but if you are talking about falicitated diffusion, the answer is True.

In your textbook, read about chemical bonds.
Complete the table below by writing the type or types of chemical bond found in the type of matter
on the left. Use the following types of chemical bonds: covalent, ionic, metallic.
Matter
Type of Chemical Bond Present
13. Molecule
14. Hydrogen gas (H2)
15. Magnesium oxide (Mgo)
16. Metal
17. Table salt (NaCl)
18. Sodium monoxide (Na,0)
19. Water

Answers

Answer:

13.covalent,14.covalent bond 15.ionic 16 metallic 17.ionic bond 18.ionic 19. Covalent

Abiotic factors of an ecosystem can include ?

Answers

Answer:

Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.

A plant has iron deficiency with dry, yellow leaves. How might yellow leaves affect a plant’s ability to photosynthesize?

Answers

Yellow leaves have lack of chlorophyll the green pigment for photosynthesis or sugar production in plants.

Answer:

It will photosynthesize at a much slower rate

Explanation:

Chlorophyll is important in the process of photosynthesis. Leaves that aren't green are a physical sign of a lack of chlorophyll.

HELP ME PLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Compare the data shown in the table. What reasonable conclusion can be made from the information given?

Answers

I’m not sure but I think that and answer is C...hope that helped

The nuclues, ribosomes, ER, Golgi appartus, and vesicles are all involved in what process?

Answers

Answer: Protein synthesis

Explanation: The nucleus, ribosomes, ER, Golgi apparatus, and vesicles are all involved in protein synthesis.

Plz mark brainliest:)

6. Name eight characteristics that all living things share.​

Answers

Answer:

homeostasis reproduction sensitive cells grow adapt interact respiration consume energy

Answer:

respiration,digestion,exretion,circulation,reproduction,locomotion and movement,chemical coordination

Explanation:

All these characteristics are found in living things

EXTRA POINTS* the particles in a ______ solid are arranged in a repeating pattern.

Answers

I believe the blank word is crystalline.


source: google

G1 – growth phase: Makes organelles and proteins needed for replication of DNA. Also contains a G1 checkpoint. If everything is correct, cell will proceed to S phase.

Answers

Answer:

correct.

Explanation:

cell will proceed to S phase for the duplication of chromosomes.

1. What is the role of a receptor in helping an
organism maintain homeostasis?
A. receives messages sent by the control center
B. carries out a response to restore internal
conditions
C. detects stimuli and sends information to the
control center
D. compares current conditions with ideal values
for those conditions

Answers

Answer:

b

Explanation:

Homeostasis has been the tendency of the organism to maintain the equilibrium state. The stimuli are detected and transmitted to the control center by the receptors. Thus, option C is correct.

What is homeostasis?

Homeostasis is the physiological process that monitors the internal environment of the body. This involves the feedback system that includes receptors that report and transfers the information to the control center of the body.

The receptor is involved in detecting the stimuli in order to generate the response through the feedback control system. The mechanism involves the effector that provides a response to the stimuli detected and transmitted by the receptors.

Therefore, in option C. the receptor sends information by detecting the stimuli.

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In the human body, is every organ a part of only one organ system? Or are some organs a part of two or more organ systems? A. Every organ is a part of only one organ system, which is necessary because organ systems work independently of one another. B. Every organ is a part of only one organ system, although organ systems often interact with one another. C. Some organs are a part of two or more organ systems. For example, the heart is a part of the circulatory and digestive systems. D.

Answers

C

[From ck12.org] "An organ can be part of more than one organ system. For example, the ovaries produce hormones, which makes them a part of the endocrine system; the ovaries also make eggs, which makes them a part of the reproductive system as well."

What impact does an increase in temperature have on the rate of a chemical reaction?

A) Temperature has no effect on the rate of a chemical reaction

B) It decreases the rate of the reaction

C) It increases the rate of the reaction

Answers

Answer:

C) It increases the rate of the reaction

Explanation:

Hope this helps!

I need help, please! I will give brainiest!
1: ATP and photovoltaic cells are similar because?
A: they both produce chemical and electrical energy.
B: they are both key components of solar panels.
C: they are both key components of plant cells.
D: they both use energy from the sun to separate electrons from atoms.
2: Which molecule is a high-energy output of photosynthesis?
A: ADP
B: oxygen
C: hydrogen
D: glucose
3: In photosynthesis, light energy is?
A: captured as usable energy.
B: stored as chemical energy.
C: captured as thermal energy.
D: stored as short-term energy.
4: Which is a simplified equation for photosynthesis?
A: carbon dioxide + water + light → sugar + oxygen
B: water + oxygen → carbon dioxide + sugar + light
C: sugar + water → carbon dioxide + oxygen + light
D: carbon dioxide + oxygen + light → sugar + water
5: Starch is a carbohydrate formed by bonded glucose molecules. What type of reaction does this represent?
A: ATP
B: cellular respiration
C: photosynthesis
D: dehydration synthesis

Answers

The correct answers for these questions are option D, A, A, A, D.

ATP molecule and photovoltaic cells are similar to each other because both ATP and photovoltaic cells use energy of the sun that is used to separate electrons from atoms.ADP molecule is a high-energy output of photosynthesis that is used for different activities in the cell.In photosynthesis, light energy is captured as usable energy which is further used in the production of glucose molecules. The simplified equation for photosynthesis is carbon dioxide + water + light → sugar + oxygen. The sugar is stored in the body parts whereas oxygen is released in the atmosphere through stomata.Starch is a carbohydrate formed by bonded glucose molecules represents dehydration synthesis. Dehydration synthesis is the formation of larger molecules from smaller molecules with the release of water molecule.

https://brainly.com/question/18743606

Answer:

1. They both produce chemical and electrical energy
2. ATP (ADP is a low-energy input)
3. Stored as chemical energy

4. Carbon Dioxide + Water + Light → Sugar + Oxygen

5. Dehydration Synthesis

Explanation:

Took the quick check (Although number two doesn't have ATP as a choice my check said it was ATP and not ADP)

The diagram below illustrates the movement of substances in a process the manufactures energy for many organisms. This process occurs within a plant cell

Answers

Answer:

can you insert the diagram please?

Plants are made up of _________________, _______________________, ________________________, ________________________, and __________________.

Answers

Answer:

nucleus, chloroplasts, cell wall, cell membrane, mitochondria, cytoplasm and vacuole

Explanation:

I think this is right.

I hope this helps! :)

Answer: cell wall, rna, dna, glucose, ribosomes

Explanation:

Which example uses collaboration to gain further knowledge?


A) A group of scientists working together to summarize results from prior experiments.

B) A group of scientists meeting and sharing results to determine who gets the credit for discoveries.

C) A group of scientists copyrighting their results to ensure other scientists do not plagiarize their work.

D) A group of scientists getting together to share the results of their experiments with each other and find a solution to a given problem.

Answers

Answer:

i love rodrick heffley

Explanation:

A student examining an unknown cell under a microscope notes it has a cell wall, cytoplasm, and genetic information contained within a nuclear membrane. Which inference would be correct?



Since the cell possesses a cell wall and genetic information, it has to be an animal cell.

Since the cell contains genetic information, it has to be a bacteria cell and prokaryotic.

Since it possesses a cell wall and DNA contained in a nuclear membrane, the cell must be eukaryotic.

Since the DNA is contained in a membrane and not in the cytoplasm, the cell must be a plant cell

Answers

Answer:

Since it possesses a cell wall and DNA contained in a nuclear membrane, the cell must be eukaryotic

Explanation:

Since the cell possesses a cell wall and genetic information, it has to be an animal cell.

     -this is a plant cell because of the cell wall

Since the cell contains genetic information, it has to be a bacteria cell and prokaryotic.

     -prokaryotes don't have DNA contained in a nuclear membrane

Since it possesses a cell wall and DNA contained in a nuclear membrane, the cell must be eukaryotic.

     - DNA contained in a nuclear membrane --> eukaryototic

     - cell wall --> plant cells, which are eukaryotic

Since the DNA is contained in a membrane and not in the cytoplasm, the cell must be a plant cell

      -DNA is contained in a membrane should not lead to the conclusion that it's a plant cell, as it could be an animal cell too

PLS HELP : What is the purpose of apoptosis?
Check ALL that apply.
(4 Points)
to make sure it has enough water
eliminates unnecessary cells
removes unhealthy cells
takes out damaged cells

Answers

I believe it’s the last 3

EXPLANATION: Apoptosis is the process of programmed cell death. It is used during early development to eliminate unwanted cells; for example, those between the fingers of a developing hand. In adults, apoptosis is used to rid the body of cells that have been damaged beyond repair. Apoptosis also plays a role in preventing cancer.

What evidence did Mendel find that supported his law of independent assortment?

A. Some traits are controlled by several different genes.
B. Most traits have a dominant form and a recessive form.
C. A trait can be passed on from a parent to an offspring.
D. Different traits are passed on independently of each other.

Answers

Answer:

D

Explanation:

The evidence observed by Mendel supporting his law of independent assortment is that different traits are passed on independently of each other (Option D).

What is independent assortment?

In genetics, independent assortment refers to the independent segregation of characters (genes) in offspring.

Independent assortment can be observed by crossing parental lines that exhibit different traits.

In conclusion, the evidence observed by Mendel supporting his law of independent assortment is that different traits are passed on independently of each other (Option D).

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Which statement describes how the mantle is similar to Earth’s oceanic crust?

Answers

Answer:

c

Explanation:

The difference between the lower mantle and the oceanic crust is first their respective locations, pressure and temperature-- the pressure and temperature increases with depth in the earth this the mantle is more hot and under great pressure than the crust.

Answer:

It has varying degrees of thickness.

Explanation:

Identify the structures in the eukaryotic cell pictured on the right. Label A Label B Label C Label D Label E

Answers

Where is the picture?

Help Please
What is the chemical reaction of carbon dioxide (or an example of a chemical reaction of carbon dioxide)

Also, does carbon dioxide create a reactant or product?

Answers

Answer:

co2 reacts with hydrogen in a reversible reaction to form carbonic acid

Explanation:

if u want the equation lem me know

A student claims that a leaf is living, and a plastic leaf is nonliving. Which statement provides evidence to support the claim?

Answers

Answer:

The plastic leaf lacks cellular structure.

Explanation:

Which molecules prevent cell membranes from dissolving in water?
O A. Nonpolar fatty acids
O B. Polar phosphate groups
C. Adenosine triphosphates
D. Large globular proteins

Answers

Explanation:

a nonpolar fatty acids

hope this help u

A non-polar fatty acids prevent cell membrane from dissolving in water. The correct option is A.

What is a cell membrane made of?

The cell membrane, also known as the plasma membrane, is uncovered in all cells and serves to separate the cell's interior from the outside environment.

The cell membrane is made up of a semipermeable lipid bilayer. The cell membrane controls the transport of materials into and out of the cell.

These are glycerophospholipids, which are molecules made up of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon compound that serves as the membrane lipids' backbone.

As, these non-polar fatty acids are insoluble in water, so it protect the cell membrane from water. It actually prevent the cell membrane to get dissolve in the water.

Thus, the correct option is A.

For more details regarding cell membrane, visit:

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what is binomial nomenclature​

Answers

Answer:

binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages

Explanation:

good luck! hope this helps

the system of nomenclature in which two terms are used to denote a species of living organism, the first one indicating the genus and the second the specific epithet.

The respiratory system controls __________, and the circulatory systems controls __________. (5 points)
antibodies; digestion
breathing; blood flow
muscles; bones
nerves; senses

Answers

Breathing; blood flow.

Answer:

respiratory- breathing

Circulatory- blood flow

Explanation:

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