Answer:
D
Explanation:
2. Which type of stem cell gives rise to red and white blood cells?
A. Endothelial
B. Epithelial
C. Hematopoietic
D. Mesenchymal
Any help is appreciated!!
endothelial is the ans dud
The type of stem cell that gives rise to red and white blood cells is called a hematopoietic stem cell and is present in Option C, as hematopoietic stem cells are multipotent stem cells that reside in the bone marrow.
What is a hematopoietic stem cell (HSCs) ?
Hematopoietic stem cells are a type of stem cell that give rise to all types of blood cells, including red blood cells, white blood cells, and platelets, and they reside in the bone marrow and are responsible for replenishing the body's blood cells. They have the ability to differentiate into a variety of cell types, and the process by which HSCs differentiate into the different types of blood cells is tightly regulated by various factors, including growth factors.
Hence, the type of stem cell that gives rise to red and white blood cells is called a hematopoietic stem cell and is present in Option C.
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The following are all examples of changing motion EXCEPT
a
A golf ball stops after rolling up a hill.
b
A race car travels around an oval track at a constant speed of 180 miles per hour.
c
A bowling ball travels in straight line down a bowling alley at a constant 3 meters per second.
d
A ball rolls against a wall and bounces away at 3 meters per second.
Answer:
It is B
Explanation:
I had this on my test last week
What type of bonds attracts water molecules
to each other and to other substances?
-covalent bonds
-double bonds
-hydrogen bonds
-ionic bonds
Answer:
Hydrogen bonds
Explanation:
hydrogen bonds are slightly positive which is attracted to the slightly negative charge of oxygen.
How do animals return water to their environment from their bodies?
Answer: Animals excrete water by respiration and by passing urine.
The human genome project was produced an area of science known as bioinformatics. how is this helpful in sequencing DNA?
Bioinformatics is a subdiscipline of biology/computer science concerned with the acquisition, storage, analysis, and dissemination of biological data. This helps organize and determine nucleotides of a given DNA molecule from known data about biological data through computer sustems.
** The Human Genome Project increased speed of DNA sequencing and lowered the cost. Basically made it more efficent.
Check out Bioinformatics lectures and websites! You will gain a better understanding of how this is helpful for sequencing DNA.
You have been provided with a non-polar liquid and are trying to determine whether
it is hydrophilic or hydrophobic. You place one milliliter of the substance into a
beaker filled halfway with water. Describe what will happen next.
Answer:
Explanation:
Non-polar liquids are liquids that have covalent bonds in which the shared electrons are shared equally. The molecules of these liquids are repelled by the molecules of water and hence do not dissolve in water. Thus, non-polar liquid are hydrophobic (water dislike/insoluble in water).
When one milliliter of the substance is placed into a beaker filled halfway with water, the substance will be seen "compact" (not dissolving nor interacting) in the beaker of water.
Polarity is defined as the separation of electric charge in a molecule or having an electric dipole moment due to the difference between negative and positively charged ends.
In the given experiment when one milliliter of the substance into a beaker is filled halfway with water, the substance will be seen as coagulating or not dissolving in the water.
The non-polar are the compounds or liquids that do not dissolve in the water. The non-polar molecules are the molecules, which are attracted to the alike molecules, rather than the water molecules.
The non-polar compounds have covalent bonds, in which the electrons are shared among the atoms of the compound.
The molecules of these liquids are repelled in the presence of water or are hydrophobic. These liquids do not dissolve in water.
Therefore, the liquid is hydrophobic.
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I need help asap!! Please
It’s due in a little bit
Answer:
explain please????!??????!
Answer this question.
An on-going research study has been tracking the dietary preferences of gorillas in the wild. Researchers are hoping to formulate a diet for gorillas in captivity that mimics those living in their natural habits. By reproducing the preferred diet, researchers hypothesize that the eventual release back into the natural habitat will be an easier transition for the gorillas.
Researchers are using various methods to make observations and collect data about the feeding habits of gorillas in the wild. Which method would be classified as direct observation?
A) Counting and classifying the debris in the area where the gorillas live.
B) Observing the gorillas from a protected location and recording what they eat.
C) Surveying the natives in the area about the diet of the local gorilla population.
D) Photographing the habitat of the gorillas in a before and after scenario and seeing what is missing from the after photograph.
Answer:
Hi, I think it is A) Counting and classifying the debris in the area where the gorillas live.
Explanation:
I am sooooo sorry if I got it wrong! Have a nice day and good luck! :)
Human Genome researchers discovered transposons. What are these structures?
Answer:
Transposon is a fragment or sequence of DNA that can move unregulated to any point in the cell genome, leading to a phenomenon called transposition.
Explanation:
Transposon is the name of what was previously known as jumping genes, being a DNA sequence capable of moving freely within a DNA molecule. A transposon can produce mutations by translocation, altering the total amount of nucleotide in DNA molecule.
Genetic changes that are linked to evolutionary processes can be due to the existence of transposons, since they can even induce chromosomal changes.
16 An organism with a cell wall would most likely be unable to take in materials through
A) osmosis
B) facilitated diffusion
C) active transport
D) endocytosis
Answer:
endocytocis
Explanation:
What role does gene expression play in determining traits on an offspring? Explain your response
Gene expression has been defined as the process where the genes produce proteins and RNA. They determine the traits in offspring as various types of proteins pass from parent to offspring.
What is gene expression?Gene expressions are said to be the expression of the genome products in the cell that undergoes the process of transcription and translation to produce the RNA and protein structures that are responsible for providing the phenotype and genotype.
The genes code for the RNA and protein that regulates the amount and type of proteins to be expressed in the offspring that are passed from a parent through reproduction methods. They are hereditary patterns that vary in some amount to make two individuals different from each other.
Therefore, gene expression plays an important role in determining the trait in offspring.
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Help!!!
What are the tools and technology used to carry out PCR tests ????
Answer:
Equipment: Thermal cycler is a technology that can change the temperature of the DNA segment. A thermal cycler can raise and reduce the temperature quickly. This allows the PCR process to happen over and over again.
Tools:
Taq polymerase build complementary DNA strands
DNA primers attach to each end of the target sequence
DNA nucleotides or dNTPs make up the DNA
Explanation:
Summarize the three main reasons why energy is wasted at each trophic level. (use your own words)
Answer:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. ... A food chain can usually sustain no more than six energy transfers before all the energy is used up.
Why is a red laser pointer an example of a poor blackbody radiator?
A. It glows less brightly as electromagnetic radiation is released.
O B. It gives off a range of wavelengths of electromagnetic radiation.
C. It gives off only one wavelength of electromagnetic radiation,
D. It keeps the same temperature and gives off no electromagnetic
radiation
A red laser pointer is a poor blackbody radiator because it emits electromagnetic radiation at only one wavelength. So, the correct option is C.
What is blackbody radiator?Depending on its temperature, a blackbody radiator is an object that radiates at different wavelengths. Blackbody radiation is the radiation that a blackbody radiator emits, and it exhibits a certain pattern known as Planck's law.
A red laser pointer, on the other hand, produces a narrow, focused beam of light at a specific wavelength, typically around 650 nanometers. This indicates that, unlike a blackbody radiator, a laser pointer does not generate radiation at different wavelengths. A red laser pointer is therefore a subpar blackbody radiator.
Therefore, the correct option is C.
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A segment of DNA has this sequence:
ATA GCA CAT
What is the mRNA sequence transcribed from this segment?
OTAT CGT GTA
O UAU CGU GUA
O TAT GGG GTA
O UAU CGT GTU
Answer: B: UAU CGU GUA CAU
Explanation:
UAU CGU GUA CAU is the mRNA sequence transcribed from this segment.
What is mRNA?
Single-stranded RNAs of the type known as messenger RNA, or mRNA, are used to make proteins. mRNA is created during transcription from a DNA template.
The function of mRNA is to transport protein information from DNA in a cell's nucleus to the cytoplasm, or watery interior, where the machinery responsible for making proteins reads the mRNA sequence and converts each three-base codon into an amino acid that belongs in a protein chain that is expanding.
Therefore, UAU CGU GUA CAU is the mRNA sequence transcribed from this segment.
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Plzzz helpp!!
What earthquake
feature lies directly
below the epicenter?
List the six kingdoms, characteristics of each, and an example of an organism that belongs in each kingdom.
Answer:
Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.
Explanation: Plant=flower
Animal=deer
Protists=giant kelp
Fungi=mushroom
Archaebateria=Aeropyrum pernix
Eubacteria=E. coli
;)
The six kingdom of the organisms are Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.
What is kingdom?The eight major taxonomic ranks of biological classification. A domain is made up of one or more kingdoms.
Animals, plants, fungi, protists, and archaebacteria and eubacteria are the 6 kingdoms of living things.
Bacterial Kingdoms and Archaean Kingdoms: These are prokaryotic ones and not posses a well developed nucleus. Example bacteria.Protists: These are eukaryotic which can be unicellular or multicellular. Example: amoebaFungi: These are also eukaryotic having single or many cells including yeast. They are not capable of photosynthesis.Plantae: These are photosynthetic eukaryotes which are primary producers. Example all plants.Animalia: these are heterotrophic eukaryotes which include all animals.Thus, these are the six kingdoms including their characteristics.
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A glucose molecule is to carbohydrates as a ___ is to nucleic acids.
Answer:
nucleotides
Explanation:
glucose is a monomer of carbohydrates so we just have to figure out what the monomer for a nucleic acid is.
Different plant species require different amounts of direct sunlight in order to flower. A student designed an experiment to determine the length of exposure to direct sunlight necessary for a specific plant species to produce flowers. The student collected the data below.
0 hours, 0% with flowers
9 hours, 0% with flowers
1 hour, 0% with flowers
5 hours, 90% with flowers
3 hours, 80% with flowers
7 hours, 10% with flowers
Identify the:
independent variable-
dependent variable-
control group-
experimental group-
constant-
Answer:
Independent variable: LENGTH OF EXPOSURE TO DIRECT SUNLIGHT
Dependent variable: PRODUCTION OF FLOWERS
Control group: THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours
Experimental group: THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT
Constant: THE SAME PLANT SPECIES
Explanation:
Independent variable is the variable that the experimenter changes or manipulates in an experiment. In this experiment, the experimenter exposes the specific plant species to sunlight at different length of time, hence, the LENGTH OF EXPOSURE TO DIRECT SUNLIGHT is the independent variable.
Dependent variable is the variable which is measured in an experiment. In this experiment, the measured/dependent variable is the PRODUCTION RATE OF FLOWERS by the plant species.
Control group is the group in an experiment that does not receive the variable being tested. In this experience, the control group is THE GROUP OF PLANT THAT WASN'T EXPOSED TO SUNLIGHT i.e. 0 hours
Experimental group is the group of am experiment that is exposed to the experimental treatment (sunlight). In this case, the experimental group is THE GROUP OF PLANTS THAT WERE EXPOSED TO SUNLIGHT.
Constants are variables of an experiment that must be kept unchanged for all groups throughout the experiment in order not to affect the experiment's outcome. In this experiment, the constant is THE SAME PLANT SPECIES used,
What types of solid waste do you produce in your home ?what could be done to each type and what goes to the disposal site or dumpsite
Answer:
Types of solid watse we produce in your home is plastic cups, metal forks and spoons, and also glass plates. We could recycle these items, so they can become other new items when we are finished.
Solid waste are described as abandoned waste materials resulting from human and chemical activities. Solid wastes could include used plastic materials, rubber, metals, glass and other materials classed as useless.
In Homes, solid wastes usually include used plastic, shattered glass, metal objects and so on. Plastic wastes and metals could be recycled and refined to make rubber and aluminium spare parts, hence, serving as raw materials.Therefore, since solid materials take very long to Decay, hence recycling of the waste and their use in organic products are always good means of disposal.
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Before deciding on a medium to use, what should the presenter do?(1 point)
compare the strengths and limitations of each medium
decide on the number of still or moving images they need
know the age and size of their audience
chose the form they feel most comfortable with
Answer:
♡ madeline here! ♡
- -it's c ʕ •ᴥ•ʔ
hope I could help! have a great day
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
.
Explanation:
Answer:
A) Comparing the strengths and limitations of each medium
Explanation:
That's what is said on the lesson and this is 100% right!
Which factor would have the greatest influence on the southern migration of animals living in the northern hemisphere
Answer:
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. It is found in all major animal groups, including birds, mammals, fish, reptiles, Many of these migrations are north-south, with species feeding and breeding in.
Gerry's Genotype is heterozygous Rr. BillyBob is heterozygous Ss. Complete the Punnett square below to show the possibilities that would result if Billy Bob & Gerry had children.
Please help me
Answer:
S s
R SR Rs
r Sr rs
10 common wetland plants native to Georgia
Answer: its Georgia
Exampl:
c. At_____sweat and sebaceous glands become more active.
Answer:
salt
Explanation:
For rats, black (B) is dominant over white (b), and short hair (L) is
dominant over long hair (). A heterozygous black, short hair female is
crossed with a white, short hair male. What is the probability of the
offspring to have black, short hair?
2/16
4/16
6/16
9/16
Answer:6/16
Explanation:the probability of a offspring to have black hair chances are 6/16
what element has 7 protons and 5 neutrons?
is centrioles a plant or animal cell?
Answer:Animal cells but some plant cells also have it.
Explanation:
pls help me pls idk how to do this
1- Evaporation:-
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. For more evaporation, the area that surrounds the surface of the water must be less humid i.e. it should not already be concentrated have the water vapors. For the evaporation we need to increase the temperature of the molecules of water on the surface, which is caused by the Sunlight.
__________________________________________________________
By keeping that in mind,
Drag the box
LIQUID --> GAS
and
WATER TURN INTO VAPOURS AND RISES UP IN THE SKY.
also
ENERGY FROM SUN CAUSES WATER TEMPERATURE TO RISE
_____________________________________2- Condensation:-Condensation is the change of water from its gaseous form (water vapor) into liquid water.
__________________________________________________________
Keeping that in mind,
Drag box
GAS ---> LIQUID
and
WATER VAPOURS COOL IN THE SKY AND TURNS INTO CLOUDS.
_____________________________________3- Precipitation:-Anything that is falling from the sky is precipitation. It could be rain, hail, snow, or sleet.
_________________________________________________________
Keeping that in mind,
Drag the box
WATER VAPOURS FALL ON THE EARTH IN THE FORM OF RAIN SNOW HAIL OR SLEET.
_____________________________________Best Regards,'Borz'How many different kinds of atoms does an element contain?
A) 2
B) 1
C) 8
D) 4
Answer:
an element contain 2 atoms
Answer: Your just a kid who doesn't know anything