Which stem cells are embryonic and which are adult?
Answer:
Embryonic stem cells can be readily grown in culture and exhibit unique properties, including spontaneous differentiation into three germ layers in vitro or teratoma formation in vivo. In contrast, adult stem cells are rare, undifferentiated cells present in many adult tissues.
Answer:
Embryonic stem cells can be readily grown in culture and exhibit unique properties, including spontaneous differentiation into three germ layers in vitro or teratoma formation in vivo. In contrast, adult stem cells are rare, undifferentiated cells present in many adult tissues
Explanation:
Hope it help
Please mark me as brainliest
More than 90% of measles infections occurs in children under ____ years old.
Answer: More than 90% of measles infections occurs in children under 15 years old.
Hope this helps
If you are studying a gene within DNA and find out that guanine makes up 41% of it, how much is Adenine?
which of the following is a correct list of structures found both plant and animal cells
Answer:
Answer:
Cell Membrane
Cytoplasm
vacuole
Nucleus
Mitochondria
etc.
There are also other things that they have in common but those are the main ones.
Does air have mass?
DON'T LOOK IT UP!!! USE YOUR OWN WORDS!!!
Answer:
Yes.
Explanation:
All matter has mass. Air is a gas and gas is matter so air does have mass.
We eat food composed of all the nutrients like carbohydrates, proteins,
fats, vitamins, minerals and water. After digestion, these are absorbed in
the form of glucose, amino acids, fatty acids, glycerol etc. What
mechanisms are involved in absorption of digested food and water?
Answer:
i'm not sure but i think Facilitated transport(The movement of the solute with the help of carrier proteins through a biological membrane. For example digested amino acids are absorbed in this manner.)
Explanation:
Long chain of _________________ that surrounds the Pacific Ocean.
Answer:
The Ring of Fire or also known as the Circum-Pacific Belt
Hope that helps!
Answer:
the circum-pacific system A surrounds the pacific ocean.
Explanation:
On the axes provided construct an appropriately labeled line graph with correct scale and units to illustrate the data in table 1
Answer:
Explanation:
AP Biology Question:
Scientists are testing substance L to determine how it enters mammalian cells in a culture. The cells maintain a 120 millimolar (mM) intracellular concentration of substance L . The scientists determined the rate of entry of substance L into the cells at various external concentrations of substance L (10 to 100 mM) in culture medium (Table 1).
20 pts!!!
Researchers are investigating the use of gene therapy as a treatment option for human genetic disorders, such as cystic fibrosis. When gene therapy is successful, how does it treat the disorder?
A. by activating, or "turning on," one or more genes
B. by deactivating, or "turning off," one or more genes
C. by incorporating a human gene into the genomes of bacteria or other organisms
D. by replacing a faulty gene with a normal gene in the human genome
Answer:
A
Explanation:
By replacing a faulty gene with a normal gene in the human genome. Therefore, option (D) is correct.
Gene therapy works by inserting a functioning gene into a patient's cells. A viral vector or other delivery method transports the normal gene into target cells.
In cells, the normal gene integrates into the genome and produces the functional protein that was missing or faulty in genetic disorder patients. Gene therapy replaces the damaged gene with a normal gene to repair the genetic origin of the condition and restore normal cell or tissue function.
Learn more about Gene Therapy, here:
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#SPJ2
Do you believe in evolution? , why or why not?
Answer: No, I don’t believe in evolution, I *KNOW* that evolution is a fact because THOUSANDS of scientists over the past couple of centuries have built up a body of evidence which makes the theory of evolution one of the best supported theories in all of science. -quora (not made by me its just to help u out)
How does the name photosynthesis offer clues about the meaning?
Answer:
The word photosynthesis contains clues to its meaning: the prefix photo comes from a Greek word meaning “light.” The root synthesis comes from another Greek word meaning “to put together.” Through photosynthesis, plants use the energy of light to put a meal together using water and carbon dioxide.
Explanation:
question Bank
What are the three sub-zones
in the Biosphere ? ( Lithosphere )
( rock part ), atmosphere
(air part) & hydrosphere
(water part).
Answer:
What are the three sub-zones
in the Biosphere ? ( Lithosphere )
Explanation:
& hydrosphere
(water part).
This food web represents a community in a rain forest.
boa constrictor
beetle coati
poison dart frog
故
sloth
strangler fig
fungus fruit bat
If the poison dart frogs disappeared from this community, which changes
would be likely to occur? Select the three correct answers.
A. A decrease in the number of figs being eaten by sloths
B. An increase in the number of figs eaten by coatis
C. An increase in the population of beetles
D. A decrease in the fungus population
E. An increase in the number of figs eaten by fruit bats
Answer:
i believe it's A, C and D but I could be wrong
Explanation:
The changes that are likely to occur include. There will be an increase in the number of figs being eaten by coatis, an increase in the beetle population, and the number of figs eaten by fruit bats. Thus the options B, C, and E are correct.
What is poisonous dark forg?The poisons dart frog is an amphibian species that is known to live in central and south America, the species are brightly colored and have a poision on their skin glands.
The brighter the frog more is the toxicity. The death of the poison dart frogs will lead to an increase in the population of fruit bats and figs being eaten by coatis. The beetle population will also grow. As the fungus will grow in large numbers.
Find out more information about the poison dart frog.
brainly.com/question/15952177
GIVING BRAINLIEST OUT TO FIRST PERSON TO ANSWER
which climate zone gets the most solar energy throughout the year
Answer:
C
Explanation:
Answer:
The answer is C!
Ape x
Explanation:
I took the quiz
describe selective breeding in your own words
Answer:
This is a type of breeding in which two organism having some special features are choosne to breed with each other to make a single organise which has both features accumulated
Why are cell membranes composed of two phospholipid layers, with the fatty acid tails of each layer directly interacting with each other?
Answer:
I think it is "The fatty acid tails are hydrophilic, and the negative charges on one set of tails ate attracted to the positive charges on the other set of tails
If the DNA is: TAC CGA CCG ACC TTA. Create a mRNA strand with a point mutation that would “not affect” the protein.
Answer:
AUG GCU GGG AGG AAU
Explanation:
A point mutation that would not affect the protein is one that has the same mRNA codon. The answer choices indicate that the third part is affected. The normal mRNA would be GGC, which if you look at the table, is gly. The other sequences that match are GGU, GGC, GGA, and GGG. The only answer choice that matches is the third one, with GGG.
Select all the statements that correctly describe the differences between DNA and RNA.
A RNA nucleotides contains uracil instead of thymine as in DNA.
B) DNA consists of two strands of nucleotides while RNA has one.
C) RNA consists of phosphate group while DNA has nitrogenous group.
D) DNA nucleotide comprises deoxyribose sugar while RNA consists of ribose sugar.
E) DNA nucleotides contain an adenine-uracil base pairing.
F) DNA is more complex than RNA because it has more types.
Fishing is NOT a popular attraction in Canada.
TRUE or FALSE
Answer:
True!
Explanation:
I hope this helps! ^^
☁️☁️☁️☁️
Answer:
false bark qoof arf grr bark arf rooof ruff ruff waork
____________________________________ and ________________________________ factors can affect an
Answer:
This question makes no sense
Explanation:
what is the inter relation among work energy and power
Answer:
Power is the rate of using energy or doing work. Energy is measuredin Joules. Power is measured in Joules per second or Watts. Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object
Briefly explain the three clues that suggest that bacteria are an evolutionary success story
Answer:
The evolutionary success of this group results from its 1- small size, 2- simplicity and 3- fast reproduction rate
Explanation:
Bacteria are evolutionarily successful organisms that makeup about 15 percent of all biomass on Earth, and they occupy almost all habitats in nature. The small size of these unicellular organisms facilitates the exchange of nutrients and waste products with the surrounding environment. In addition, the relative simplicity of bacteria also facilitates the assembly of cell structures as well as a fast reproduction rate by the fast division of single cells. All these features are critical in order to understand the rapid evolution rate observed in this group.
The Punnett square shows the results when two parent dogs are crossed. L represents the allele for a long tail, and l represents the allele for a short tail.
Which best describes this inheritance pattern?
A) incomplete dominance because neither allele for tail length is dominant
B) codominance because neither allele for tail length is dominant
C)incomplete dominance because the offspring display an intermediate form of tail length
D) codominance because the offspring display an intermediate form of tail length
Answer:
I think that the answer is D
Explanation:
i had this question before but i cant really remember when or what it was...
Answer:
D.
Explanation:
goodluck
The one specific, identifiable origin of a pollutant is called the __________.
A)
rangeland
B)
natural hazard
C)
toxic environment
D)
wilderness
E)
point source
Answer:
E) point source
Explanation:
edg 21
Completa el siguiente cuadro, colocando los hechos más relevantes de las siguientes fases que involucran la interfase:G1 Etapas Características Material genético Tiempo de duración
La respuesta correcta para esta pregunta abierta es la siguiente.
Desafortunadamente, se te olvidó incluir el cuadro. Sin el cuadro, no sabemos que lo que te estás refiriendo.
A pesar de que se te olvidó incluir la información que es determinante para responder a tu pregunta, hicimos una investigación exhaustiva para encontrar la información que nos ayude a responder tu pregunta.
Así que, estos son nuestros comentarios.
En la etapa "G1", la célula irá duplicando su tamaño y los organelos van aumentando proporcionalmente, así como las enzimas y los demás organismos que ahí se encuentran. El tiempo de duración es de 12 horas y los materiales genéticos son 2n y 2c.
En la etapa "S," las proteínas asociadas y el ADN se duplican. La célula cuenta en este momento con dos copias de la información genética. El tiempo de duración es de 6 a 8 horas y los materiales genéticos son 2n y 4c.
En la etapa "G2" empiezan a formarse las estructuras que se necesitan para comenzar al división. Comienza la condensación de cromosomas. El tiempo de duración es de 3 a 4 horas y los materiales genéticos son 2n y 4c.
Which statement best summarizes what happens to energy in an ecosystem when it reaches the top of the food chain?
A. The flow of energy stops when the top predator dies
B. The flow of energy stops when a secondary predator decomposes
C. The energy flows in the opposite direction, back down the food chain
D. The energy is transferred to the soil and recycled back to the producers
Answer:
D.
Explanation:
Answer:d
Explanation:
Which of the following correctly shows the sequence of protein synthesis?
a. DNA -> protein -> RNA
b. RNA -> DNA -> protein
c. Protein -> RNA -> DNA
d. DNA -> RNA -> protein
Answer:
D
Explanation:
*too lazy to write the explanation*
Can u plss help me, will give out the brainliest.
• What does the Human Genome Project decode?
• How is that code represented?
• What has the project revealed about the differences between humans and bananas?
• What questions does the Human Genome Project raise for you?
• What are outliers, and what is their value in understanding disease?
• How can a genetic mutation be advantageous?
• How is the knowledge of mutations being used to combat the HIV virus?
In this activity, students learn about the Human Genome Project. They do an interactive Web activity which simulates the process scientists use to determine the sequence of chromosomal DNA bases. Then they learn how two teams of scientists raced to decode the human genome. Next they explore a stretch of sequenced DNA on the Web to learn about the function of different sections of DNA code. They learn how knowledge of the human genome is being applied to medicine. They also learn about genetic variation among humans and between humans and other species. Finally, they assess what they have learned about the Human Genome Project by playing a game of Jeopardy.
Objectives
Learn about the purpose and work of the Human Genome Project
Describe the process of sequencing human DNA
Understand the functions of different stretches of code on a chromosome
Recognize the similarity in the genetic code among humans and between humans and other species
Learn how the Human Genome Project can contribute to curing diseases
Suggested Time
1-2 class periods
Multimedia Resources
Human Genome Project QuickTime Video
Sequence for Yourself Flash Interactive
The Sequencing Race Begins QuickTime Video
Explore a Stretch of Code Shockwave Interactive
HIV Immunity QuickTime Video
Genetic Variation QuickTime Video
Genome Facts HTML Document
Jeopardy Game Show PDF Document
Extract Human DNA from Cheek Cells HTML Document
Use these resources to create a simple assessment or video-based assignment with the Lesson Builder tool on PBS LearningMedia.
Materials
Jeopardy Game Show (PDF) review
Before the Lesson
Review the concepts of and relationships between DNA, genes, proteins, chromosomes, and traits.
After the Lesson
Do a wet lab in which students extract their own DNA from a cheek cell (see Extract Human DNA from Cheek Cells activity).
The Lesson
Part I
1. Show the Human Genome Project video. Discuss the following:
What does the Human Genome Project decode?
How is that code represented?
What has the project revealed about the differences between humans and bananas?
What questions does the Human Genome Project raise for you?
2. Now have students explore the DNA sequencing process by doing the Web activity Sequence for Yourself. Use the following questions to elicit student responses, either in writing or as part of a whole-class discussion:
Why does the DNA have to be cut into pieces? How is this done?
How are DNA copies made in the lab?
How do primers and special fluorescent nucleotides help determine the DNA sequences?
How does the overlapping of DNA segments allow the entire sequence of a DNA molecule to be read?
3. Show video The Sequencing Race Begins. Ask:
What is the process for sequencing the human genome?
How has the way scientists read the genetic code changed in recent years?
Why is the map of the human genome considered only the beginning of the Human Genome Project?
4. Have students Explore a Stretch of Code and take notes as they do it. Then ask the following and discuss as a class:
What does the majority of the DNA in chromosomes code for?
What is the role of gene promoters like TATA boxes?
How does the "machinery" of the cell know where to begin reading the gene?
What are exons, and what is their function in the chromosomes?
What are introns, and what do they do? What happens to them when DNA is transcribed into mRNA?
What are the roles of "hitchhiking" and ancient code in human DNA, and where did they come from?
How alike is the DNA from two different humans?
What is a gene, and what role do genes play in the human body?
5. Show the video HIV Immunity to examine some of the benefits of mapping the human genome. Ask:
What are outliers, and what is their value in understanding disease?
How can a genetic mutation be advantageous?
How is the knowledge of mutations being used to combat the HIV virus?
6. Show the video Genetic Variation and discuss the following:
Whose genes are being sequenced in the two human genome projects?
Are these genes representative of the human species? Why or why not?
What is the percentage of genetic difference between any two humans?
What does the similarity of basic functions between different organisms indicate?
7. Finally, have students read the Genome Facts document. Have students use these facts and what they have learned about the Human Genome Project to create a series of answers and questions for a Jeopardy quiz show. (
Combustion is another word for?
A.Transportation
B.Respiration
C.Burning
D.Fossil Fuels