The blood disorder in which the blood doesn't clot properly is known as-
Hemophilia
Erythemia
Color blindness
What organ receives oxygen First during each circulatory cycle
A researcher attempts to use a segment of ribosomal RNA as a molecular clock to calculate the date of the last common ancestor of two species. He finds that the two species diverged from a common ancestor 150 million years ago. These particular species have abundant fossil records that strongly suggest that these species diverged 100 million years ago. Which of the following answer choices best describes a reason for the discrepancy in the date of the last common ancestor of these species?
A. Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
B. The neutral mutation rate used in calculating the last common ancestor date may not have been accurate.
C. It is highly likely that the two organisms did not share a common ancestor, so the results are invalid.
D. A large portion of the ribosomal RNA is not vital to survival, so it is not likely to be well preserved.
Answer:
B
Explanation:
It is B because the mutation rate should not have been accurate if it showes that they diverged 150 million years ago. But the abundant fossil records show that it diverged 100 million years ago.
Hope this helps:)
Ribosomal RNA is not a reliable molecular clock and should not be used for dating.
What is molecular docking?In structural molecular biology and computer-assisted drug design, molecular docking is an important technique. The purpose of ligand-protein docking is to anticipate a ligand's most common binding mode with a protein having a known three-dimensional structure.What is dating? Carbon dating is used to determine the age of ancient material such as an archaeological or paleontological specimen .A molecular clock estimates how long it has been since similar species separated from a common ancestor based on DNA sequences (or the amino acid sequence of proteins encoded by DNA).
Hence, the correct option is A.
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Sam doesn't feel like he's being treated fairly by his parents. He wants to stay out
later, but they want his curfew set at 10PM. What is causing this conflict?
dispute over resources
differing values
Opower struggle
Omiscommunication
Answer:
c. power struggle
hope this helps
I need to submit this ASAP please help
State reason(s) why ash should or should not be used in making compost
Answer:
Fireplace ashes for compost can be used to help maintain the neutral condition of the compost. It can also add nutrients to the soil. Decomposing materials in the compost pile can become somewhat acidic and wood ash can help offset this, as it's more alkaline in nature. But Adding too much ash to the pile can be detrimental to the makeup of the compost because of its alkalinity. Ashes tend to raise the soil pH, so you shouldn't use it directly on plants, especially acid-loving ones like rhododendrons, azaleas, and blueberries. Also, in high amounts, wood ash can inhibit plant growth by restricting nutrients, like iron.
What two things make blood pressure? *
A. pressure caused by contraction of heart ventricle and pressure exerted on blood by
walls of blood vessels
B. pressure caused by contraction of heart atrium and pressure exerted on blood by walls of blood vessels
C. pressure caused by stressful workload and pressure exerted by teachers
D. pressure caused by contraction of heart ventricle and pressure due to gravity
Answer:
I think it's A, I am not sure
Explanation:
How do limiting factors impact local ecosystems?
A)Limiting Factors prevent populations in ecosystems form growing any larger. If any of the limiting factors change, animal and plant populations change, too.
B)Limiting factors do not prevent populations in ecosystems from growing any larger. If any of the limiting factors change, animal and plant populations do not change, too.
C)Limiting factors can never impact ecosystems.
D)As biodiversity of an ecosystem increases, the ability to withstand environmental stress due to the loss of a single species or group also increases, improving the sustainability of the ecosystem.
Answer:
limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations. ... Sometimes a population will grow too large for the environment to support.
Explanation: a
A newborn child was brought to the hospital nursery before he was marked with his parents' names. The hospital workers must use what they know
about genetic outcomes to determine whom the child belongs to. They use his traits to help them. The baby has freckles (F dominant), and attached
earlobes (I recessive). They believe that the baby most likely belongs to a couple in which the man has attached earlobes but no freckles. It is known that
the woman is heterozygous for freckles and earlobe type.
Complete the Punnett square below to determine the probability that the child belongs to this couple. List the possible combinations of the father's
alleles across the top and the possible combinations of the mother's alleles down the left side. Then write your answer in the space below. Include a
brief statement explaining how you reached your answer.
Answer:
Explanation:Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
1. Water is the only substance that exists in nature as a solid, liquid, and gas
at Earth's
Help please I need a. and b. For number 2
Answer:
they are both dominant
Explanation:
because of the capital P overrides tge lowercase p
Answer:
PP = purple and Pp = purple
Explanation:
Purple is dominant in both genotypes.
A cell phone discarded in the United States can cause a person processing it in China, India, or Africa to suffer negative consequences if it is not handled properly.
True Or False
Answer:
true
Explanation:
it is true
The ability to do work or cause change is called
energy
O force
O power
Owork
Answer:
energy
Explanation:
nervous/endocrine questions help pls!!
Answer:
Explanation:
1. A
2. B
3. IDK.
How do the cells and organs of the Skeletal and Muscular system work together?
Answer:
A tendon
Explanation:
Tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to attach the bone to muscle
B vitamins and vitamin C are water soluble vitamins.
O A.
True
B.
False
Answer:
A. TRUE
Explanation:
"B-complex vitamins and vitamin C are water-soluble vitamins that are not stored in the body and must be consumed each day." says google
Which was not produced by volcanic outgassing?
O A. Oxygen
O B. Sulfur
O C. Water vapor
O D. Carbon dioxide
Answer: A. Oxygen
Explanation:
The component that was not produced by volcanic outgassing is oxygen, while the rest of all the released during the process of a volcanic eruption.
What do you mean by Volcanic outgassing?Volcanic outgassing may be defined as an eruption that releases a gas that was dissolved, trapped, frozen, or absorbed in some material.
Volcanic eruption transfers various gases from the interior of the Earth to the atmosphere leading to outgassing which includes water vapor, carbon dioxide, and sulfur.
Therefore, the component that was not produced by volcanic outgassing is oxygen, while the rest of all the released during the process of a volcanic eruption.
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Physical characteristics include 3 pairs of legs and 3 body sections *
arachnids
insects
annelids
echinoderms
Answer:
The three main features of an arthropod's body are the _ or cuticle made of chitin; a series of paired, jointed _ , and segmented _ parts. A long organic molecule made of sugars, arranged in layers. Chitin.
Explanation:
Answer:
Which of the following equations are balanced correctly?
2Ag2O → 4Ag + O2
Zn + HCl → ZnCl2 + H2
Cu + H2O → CuO + H2
2C4H10 + 13O2 → 8CO2 + 10H2O
Explanation:
What is the pathway of air into the body?
A. nose → nasal cavity → pharynx → trachea → larynx → bronchi → lungs
B. nose → nasal cavity → pharynx → larynx → trachea → lungs → bronchi
C. nose → nasal cavity → larynx → pharynx → trachea → bronchi → lungs
D. nose → nasal cavity → pharynx → larynx → trachea → bronchi → lungs
Answer:
D
Explanation:
Answer:
The answer is D
Explanation:
What climate conditions occurs during el ninio
Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.
hope this helps !_!
ENJOY groovie DAYHelppp !
Mendel published his results in 1865, but the significance of his work was not
recognized at that time. What is one reason scientists were not excited about
Mendel's work at the time?
O
A. He did not have enough data.
O
B. His results were false.
O
C. He did not repeat his experiments.
O
D. His results conflicted with accepted theories.
the answer should be d
Predict how a loss of function mutation in the p53 gene is most likely to affect the cell cycle in response to DNA damage. Justify your predictions.
Answer:
The cell cycle of cell multiplication is regulated by three types of genes, the regulatory genes that control mutations, the generic promoters of cell replication, and genes that inhibit cell replication.
The balance between these three types of gene group are what result in a good multiplication of cells without mutations or neoplastic developments.
The p53 gene is one of the genes that is considered as the guardians of the genome, since it is in charge of corroborating and regulating mutated cells, in this way it inhibits their progression in the cell cycle by putting a stop to not replicate defective genes or genes with alterations.
Explanation:
The p53 gene is one of the most altered genes seen in malignant neoplasms, since by altering our guardian of the genome many mutations overlook and more carcinogenic potential will have neoplastic tissue.
In the three groups of genes that we write, all three have a fundamental roll in the cell cycle, but in order to trigger malignant neoplasms, it is necessary that there be a continuous series of gene mutations in these three groups, it is not enough with the mutation of a single gen.
Label the following chemical equations as either photosynthesis or cellular respiration.
a. 6CO2 + 6H,0 → C6H12O6 + 60,
b. C6H12O6 + 60, + 6CO2 + 6H20
What are the different possible gametes for AABBDd?
Answer:
8
Explanation:
Diffrent types AaBbDd
Pheumonia is caused by_
Answer:
viral infections
Explanation:
Pneumonia is a lung disease characterized by inflammation of the airspaces in the lungs, most commonly due to an infection. Pneumonia may be caused by viral infections, bacterial infections, or fungi; less frequently by other causes. The most common bacterial type that causes pneumonia is Streptococcus pneumoniae.
explain how the products of photosynthesis are stored leaves!
Answer:
The products are stored in the form of starch because glucose is soluble
Explanation:
Answer:Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in (to be used in photosynthesis), and oxygen out. These gases move into and out of the leaf through openings on the underside called stomata.
Explanation:
Given the following phylogenetic tree, which evolutionary event occurred most recently?
A.) development of different forms of symmetry.
B.) development of tissues.
C.) each of these traits evolved at the same time.
D.) protostome and deuterostome development.
Answer:
Option-D
Explanation:
A phylogenetic tree is a diagrammatic representation which is constructed in to show the common ancestors at the base of the tree and the branches represent the new species.
The phylogenetic tree which is constructed based on the traits evolved during evolution is known as a cladogram. In the given question, the cladogram represents the evolution of various groups of the organism from a common ancestor based on the traits evolved.
The trait which was evolved earlier is present at the base like the development of tissues while the most common trait is present at the top which is the development of deuterostome and protostome.
Thus, Option-D is the correct answer.
The mechanism through which a parents gene is turned off, through the attachment of a methyl group to that parent's DNA is called :
A) methylation
B) mutation analysis.
C) cross contamination.
D) spermatogenesis or oogenesis.
Answer:
the answer is a methylation
Explanation:
Why should extra precautions against sun exposure be taken when boating?
Water cancels out most sunscreens.
UV rays are blocked over land, but not over water.
The heat of the water increases potential skin damage.
The water reflects UV rays, adding to exposure.
Answer:
the correct answer would be D the water reflects UV rays, adding to exposure
Explanation:
Answer:
the correct answer would be D the water reflects UV rays, adding to exposure
Explanation:
Explanation:
Father
B b
Mother
B
b
BB
Bb
Bb
bb
B=dominant
b = recessive
The gene for brown hair (B) in Goats
Consider the possible genotypes of the offspring of two heterozygous brown goats. The ratio of brown to white
offspring in this case would be
A)
1:3.
B)
2:2
3:1
D)
3:4
Answer:
C. 3:1
Explanation:
Bb is still dominate because the bigger letter takes over the smaller letter.
Theres 3 dominate genes (Brown) and 1 recessive (White)
Contaminated water called leachate from _____ can pollute groundwater.
Group of answer choices
A.solid waste incinerators
B.bioplastics
C.compost bins
D.sanitary landfills
E.recycling centers
Answer:
option D
Explanation:
Infusion is formed by the leaching of water in waste in a landfill along with the transfer of certain contaminates. Contaminated water called infusion from sanitary landfills can pollute groundwater.
What is sanitary landfill?Sanitary landfill is a landfill where waste is decomposed into biologically and chemically inert materials in a setting which is isolated from the environment.
There are the following types of landfills:
Municipal solid waste landfills.Industrial waste landfills.Hazardous landfills.Contaminated water called infusion from sanitary landfills can pollute groundwater.
Thus, the correct option is D.
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