Why is the use of stem cells to produce new specialized cells, which can replace a body's damaged cells and cure disease, creating a controversy?
Answer:
human embryonic stem cells are obtained from embryos, thereby they are subject to ethical, religious, political and legal considerations
Explanation:
Human embryonic stem cells (HESCs) are pluripotent undifferentiated cells derived from blastocyst-stage embryos, which have the ability to produce any type of somatic cells. HESCs are obtained in vitro from embryos that are 5-6 days old. These cells are valuable tools in research in order to understand the genetic and physiological mechanisms of human development, as well as to develop treatments against diseases. The use of embryonic stem cells in research is controversial because these techniques involve the destruction of human embryos, and there are people who consider human life begins with the formation of the diploid zygote after fertilization, thereby raising the debate if a human embryo can be regarded as a human being.
PLEASE HELP, WILL MARK BRAINLEST
Question 3(Multiple Choice Worth 6 points)
Study the graph below. At what depth does the thermocline begin?
A line graph relating ocean depth to water temperature. At 0 meters, temperature is approximately 27°C. At 100 meters, temperature is approximately 24°C. At 200 meters, temperature is approximately 11°C. At 300 meters, temperature is approximately 8°C.
Public Domain
0 meters
100 meters
200 meters
300 meters
Answer: 100 meters
Explanation:
The thermocline begins at 100 meters of depth. Thermocline is a transition oceanic water layer between deep and surface water in which water temperature decreases rapidly with increasing depth. From the given graph it cam be seen that at 100 meters the thermocline begins such that the temperature drops from to.
FYI we just learned about this
What are the abiotic and biotic factors of a Beach Coastal?
Answer:
Beaches have specific abiotic factors like sandy, rocky soil, high amounts of sunlight, strong wind, high salinity and changing tides. Despite these challenges many biotic factors survive, such as mangrove trees in tropical areas, and flat, sprawling succulents in sand dunes.
The nucleotide base sequence of a strand of DNA is TAC-CGG-AGT. Wha
is the sequence of the complementary DNA strand?
Answer:
AUG- GCC- UCA
Explanation:
Hope this is helpful!!
please help! ASAP giving 20 points!
(Don't take points corret gets brainliest)
Identify the following structure indicated
by the arrow.
CCG GCC ACU CCC
GGG
(
UGA
A. Anticodon
B. Amino Acid
C. tRNA
D. Codon
f ज
Answer:c
Explanation:
In what phase of meiosis is DNA replicated?
Answer:
During prophase I, the chromosomes condense and become visible inside the nucleus. Because each chromosome was duplicated during the S phase that occurred just before prophase I, each now consists of two sister chromatids joined at the centromere.
I hope it's helpful!
Where on earth did life first begin?
Answer:
As of 2017, microfossils (fossilised microorganisms) within hydrothermal-vent precipitates dated 3.77 to 4.28 Gya in rocks in Quebec may harbour the oldest record of life on Earth, suggesting life started soon after ocean formation 4.4 Gya during the Hadean Eon.
Explanation:
brainliest plsssssssss
what is eukaryotic multicellular consume and eats its own food?
A.Protista
B.Fungi
when paleontologists study fossils, which is true of the fossil record that they find
Answer:
D. The fossil record shows how different groups of organisms have changed over time
Explanation: Fossil change overtime which means that some in particular will never or sometimes, be the same. ( i aslo dont know if this is the right answer so if you get it wrong, im super sorry)
Answer: D
Explanation:
I
did the test
2. Match the following:
(a) Grass
(b) Deer
(c) Cobra
(d) Vulture
(e) Microbes
(1) Carnivore
(ii) Decomposers
(iii) Primary consumer
(iv) Autotroph
(v) Scavenger
Answer:
Grass - Autotroph
Deer - Primary consumer
Cobra - Carnivore
Vulture - Scavenger
Microbes - Decomposers
Have a good day ! :)
hey ! what is the difference between a habitat and a niche?
ill give brainliest if i can, but id k im high enough level yet lol
Answer:A habitat is the place where an organism lives while a niche is that organism's role within that environment.
Explanation:
Answer:
Down Below:
Explanation:
Habitat = the natural home or environment of an animal, plant, or other organism.
Niche = a comfortable or suitable position in life or employment.
Which type of electromagnetic wave has the lowest frequency?
A. Ultraviolet
B. Visible light
C. Gamma rays
D. Microwaves
Answer:
D
Explanation:
Select the tubes that contain protein.
Select all that apply.
Tube 1: Pepsin
Tube 2: Albumin
Tube 3: Starch
Tube 4: Water
Answer:
Tube 1: Pepsin
Tube 2:Albumin
Explanation:
The tubes that contain protein are TUBE 1 : PEPSIN and TUBE 2 : ALBUMIN
Pepsin contains inactive protein called Zymogen also called pepsinogen.
Albumin is the single most abundant protein which is produced in the liver.
Starch does not contain protein but sugar which yields Carbonhydrate.
Tube 4 : contains water which is also a form of nutrient different from protein.
Therefore, the tubes that contain protein ARE tube 1 and tube 2 : PEPSIN and ALBUMIN.
LEARN MORE : https://brainly.com/question/1332149
Which has the HIGHEST metallic characteristics?
Мо
Y
Nb
Zr
Answer:
It is either y or nb
Explanation:
I had a lesson on this but don't remember exactly.
What object allows all light to pass through?
Answer:
Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them. Materials like frosted glass and some plastics are called translucent. When light strikes translucent materials, only some of the light passes through them
Explanation:
. Answer D would be it. A window.
Which are characteristics of all bacteria? Check all that apply.
They lack a nucleus.
They have a nucleus.
They eat other organisms.
They make their own food.
They are eukaryotes.
They are prokaryot
Answer:
first & last one :)
Explanation:
How do you think that wearing personal protective equipment helps to protect us from contracting airborne diseases?
Answer:
Airborne transmission may occur if patient respiratory activity or medical procedures generate respiratory aerosols. These aerosols contain particles that may travel much longer distances and remain airborne longer, but their infective potential is uncertain. Contact, droplet and airborne transmission are each relevant during airway manoeuvres in infected patients, particularly during tracheal intubation.
Explanation:
Some trees shed their leaves in time for winter, called deciduous trees. How is this adaptation useful?
The trees save energy during the darker, colder months.
The trees blend into their environment and hide.
The trees attract animals to spread their seeds.
The trees take in more sunlight through their branches.
Answer:
they save energy in darker colder months
Describe how the stages of mitosis result in the formation of two diploid cells (6 Marks)
Mitosis is a type of cell division in which a diploid body cell copies itself and finally divides into two identical diploid daughter cells . The daughter cells are clones of each other.
Explanation :
The stages of mitosis in detail.
Stage What happens
Cytokinesis The cell membrane pinches in and eventually divides into two daughter cells
Mitosis is defined as the cell division in where a diploid body cell copies itself and finally divides into two identical diploid daughter cells . The daughter cells are clones of each other.
What are the stages of mitosis?There are four stages of mitosis namely prophase, metaphase, anaphase and telophase.
1) Prophase is first phase in which chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres.
2) Metaphase is 2nd stage where chromosomes line up along the metaphase plate (centre of the cell).
3) Anaphase is the main 3rd stage where sister chromatids are pulled to opposite poles of the cell.
4) Telophase is last stage where nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin.
Mitosis during which the cell makes preparations for and completes cell division only takes about 2 hours.
For more information regarding mitosis, visit:
https://brainly.com/question/19058180
#SPJ2
are bacteria prokaryotes of eukaryotic
Answer:
well they can be both sometimes, some can survive in very hot environments, but most can be killed by heat so it is prokaryotic
Explanation:
Why did Mendel study pea plants?
Answer:
Pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow and could be bred rapidly and had many several observable characteristics like petal color and pea color. Mendel used a tall plant and a small plant expecting a medium plant to com out. That was not the case one tall plant came out and so did 3 small ones. This is because of genetics. And the genetic chart showing what the percents are.
Explanation:
How did scientists draw boundaries around the plates?
Answer: By plotting the locations of earthquakes
Explanation:
A person takes a drink of water and begins to
choke. The water has gotten into the person's
windpipe. Which part of the upper respiratory
system is supposed to prevent this?
larynx
nasal cavity
pharynx
nose
A flap of tissue called the epiglottis sits over the top of the trachea. This flap blocks food and drink from going down into the trachea when you swallow. But in some cases, food or drink can enter the trachea. It may go down as you swallow.
Answer:
Larynx
Explanation:
Which of the following move through convection currents? Select all that apply.
A. Air in the atmosphere
B. The mantle moving tectonic plates
C. Ocean currents
D. The water cycle
Explain the impact of a force on wave movement on land.
Answer: Waves are important for building up and breaking down shorelines. Waves transport sand onto and off of beaches, transport sand along beaches, carves structures along the shore. The largest waves form when the wind is very strong, blows steadily for a long time, and blows over a long distance.
The wind could be strong, but if it gusts for just a short time, large waves won’t form. Wave energy does the work of erosion at the shore. Waves approach the shore at some angle so the inshore part of the wave reaches shallow water sooner than the part that is further out. The shallow part of the wave ‘feels’ the bottom first. This slows down the inshore part of the wave and makes the wave “bend.” This bending is called refraction.
Wave refraction either concentrates wave energy or disperses it. In quiet water areas, such as bays, wave energy is dispersed, so sand is deposited. Areas that stick out into the water are eroded by the strong wave energy that concentrates its power on the wave-cut cliff.
A wave-cut platform is the level area formed by wave erosion as the waves undercut a cliff. An arch is produced when waves erode through a cliff. When a sea arch collapses, the isolated towers of rocks that remain are known as sea stacks.
Wave Deposition
PictureRivers carry sediments from the land to the sea. If wave action is high, a delta will not form. Waves will spread the sediments along the coastline to create a beach. Waves also erode sediments from cliffs and shorelines and transport them onto beaches.Beaches can be made of mineral grains, like quartz, rock fragments, and also pieces of shell or coral. Waves continually move sand along the shore and move sand from the beaches on shore to bars of sand offshore as the seasons change. In the summer, waves have lower energy so they bring sand up onto the beach. In the winter, higher energy waves bring the sand back offshore.Some features form by wave-deposited sand. These features include barrier islands and spits. A spit is sand connected to land and extending into the water. A spit may hook to form a tombolo. Shores that are relatively flat and gently sloping may be lined with long narrow barrier islands. Most barrier islands are a few kilometers wide and tens of kilometers long.In its natural state, a barrier island acts as the first line of defense against storms such as hurricanes. When barrier islands are urbanized, hurricanes damage houses and businesses rather than vegetated sandy areas in which sand can move. A large hurricane brings massive problems to the urbanized
Explanation:
how would the western diet have to change in order to become vegan
Answer: you would have to cut out animal products and meat and most likely not
Explanation:
Question 10 (2 points)
What occurs to a neuron when it receives a chemical message?
a
b
ОООО
The cell becomes positively charged on the inside.
The cell returns to its resting state.
The cell floods the nucleus with sodium ions.
The cell becomes impermeable for a short time,
C
d
Hey,
the answer is the cell becomes positively charged on the inside.
Populations must be able to adapt to environmental pressures or face extinction.
In the bug hunt simulation, how did the bugs adapt? *
Answer:
death
Explanation:
Answer:
death
Explanation:
i took the test
