Answer:
Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation. Arteries and veins are two of the body's main type of blood vessels.
Explanation:
Hope it is helpful....
Explanation:
ateries carry blood away from the heart and veins carry blood to the heart
anyone down to be friends? :3
Answer:
sure , me :)
Explanation:
In guinea pigs, short fur (S) is dominant to long fur (s). Two heterozygous guinea pigs
(Ss) mate. Complete the Punnett square and then list the percentages of the
expected genotypes for their offspring.
Explanation:
A way I like to remember heterozygous is by remembering that the other word for heterozygous because brainly wont let me say it apparently. The same gender liking each other, so (word) is same, hetero is different.
each square would have 25% each because 100%÷4=25.
Dominant one is like mixing black and blue together,the black is gonna give a dark effect to blue so black is dominant.
Blue is recessive.
The percentage of the Ss is 75% while the percentage of the ss is only 25%.
Performing a crossGiven that we have the genotypes of the both parents as Ss. The Ss imples that the gene for short fur is dominant over the gene for long fur.
Now, when we perform te cross for the first generation, we will discover that we have the offspring; Ss, Ss, Ss and ss. The percentage of the Ss is 75% while the percentage of the ss is only 25%.
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Mendel is considered the Father of Genetics. His famous pea plant experiments helped to formulate several laws in genetics that have
stood the test of time with very little modification. Match each law or term with the correct description/definition.
Answer:
The Principles Of Mendel's Genetics
1.Law of Segregation
2.Law of independent assortment
3.Law of dominance
4.Recessive Allele
5.Co-dominance
6.Incomplete Dominance
Explanation:
The Law of Segregation, often known as Mendel's First Law, stipulates that two alleles for a trait segregate during the production of gametes, resulting in each gamete having just one copy of each allele.
What is an explanation of the concept ?This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
Mendel's Second Law, or the Law of Independent Assortment, states that the inheritance of one feature is not reliant upon the inheritance of another trait. This concept explains why a cross between two animals with dissimilar features can result in offspring that exhibits every feasible combination of the two qualities.
Mendel's research with pea plants was groundbreaking in thea branch of genetics. His thorough research and tests resulted in the development of two laws that are now the cornerstones of genetics. According to the Law of Segregation, two alleles for a trait separate from one another throughout the development of gametes, leaving just one allele per trait in each gamete.
This concept explains why a cross between two animals with dissimilar features, such as flower colour, can occasionally result in an intermediate phenotype in the progeny.
According to the Law of Independent Assortment, one trait's inheritance is not correlated with that of another. This law explains how a cross between two creatures with distinct features can result in offspring that can display any combination of the traits.
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PLS HELP ASAP 50 POINTS!!
Select the homologous structures.
a. human arm
b. whale's flipper
c. bird's wing
d. cat's leg
Answer:
Flipper of a whale and bird's wing are homologous structures.
For more better explanation see below.
Explanation:
Flipper of Whale is homologus to the wing of a bird. Homologous organs - The structure which are similar in their morphology, anatomy, genetics and embryology, but dissimilar in their functions.
Flipper of whale and wing of bird has similar morphology and anatomy, but differ in their functions according to their species as well as the habitat where they live in.
A dolphin’s flipper, bird’s wing, cat’s leg, and the human arm are considered homologous structures. Whereas human beings have bones such as the humerus, ulna, radius, wrist bones, and fingers, these features appear as similar bones in form in the other animals. Bats, whales, and many other animals have very similar homologous structures, demonstrating that these creatures all had a common ancestor.
PLEASE MARK ME BRAINLIEST.
Answer:
Human arm and cats leg
Explanation:
Two tubes A & B were set up as shown above. Both tubes were left indoors for 50 minutes and then taken outdoors for another 50 minutes. The tubes were weighed every 10 minutes. The table shows the results obtained.
Answer:
Explanation:
Question A
Evaporation happens because fast moving molecules break out of the surface of the water. The fact that there is part of a plant in the water means that the water travels up to the leaves where it evaporates. There are two sources of evaporation in test tube A and only one in B.
Question B
The Cotton plug in the top of the test tubes slows the process down. There are still molecules that are escaping but the cotton absorbs them especially in test tube B. The molecules are free to go in test tube A. They make their way to the leaves where they evaporate.
Part C
You'll have to do the rest of this yourself. The graph for Test Tube A should be less (closer to the x axis) than B.
The rest of the answers are explained in A and B
solid water (ice) does not flow. Liquid water does flow because the particles of liquid water-
Answer:
Hope this helps
Explanation:
Are not as soild of an ice cube its like water is gas but not its in the middle so that is why there is an ice cube and if you nelt the ice cube it turns into a liqued and if u boil it then it state turns into a gas which means the particals are all over the place
But to clear it up liqued particls are a littel more move-able
What would the Punnett square of a female hybrid and a male whith colorblindnes look like?
Answer:
I think it's correct but i'm not sure
Explanation:
+ is normal vision and dominant
c is colourblind and recessive
Write two statements expressing the relationships between voltage and current and resistance and current.
Explanation:
The current flowing in a circuit is directly proportional to the applied voltage and inversely proportional to the resistance of the circuit, provided the temperature remains constant.If we increase the amount of voltage applied, and do not change the resistance, we will also increase the current.plz answer asap I'll mark brainliest
If you had to explain the evolution of the peppered moth to a younger sibling or a cousin, how would you do it
Answer:
The peppered moth changes to better survive in its habitat which is summed up as adaptation
Explanation:
Image B depicts three skulls. Do you think the image supports the fact that all three organisms share an evolutionary relationship? Explain your answer using evidence from the image.
Answer: This is a series of skulls and front leg fossils of organisms believed to be ... 3. What is the biggest change in leg anatomy that occurred from the dawn ... Shown below are images of the skeletal structure of the front limbs of 6 animals: human,
Explanation: i think
what occurs overtime that would cause the Shy birds to become less common in the city?
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The major reason for bird species decline is loss of habitat, especially grasslands and forests. All have experienced declines in some areas since the 1960s and '70s, and further declines are anticipated, due to habitat loss and deforestation, and climate change
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True or False (Please tell me Asap)
Answer:
1. false
2. false
3. true
4. true
5. true
Explanation:
Which statement is true regarding nuclear power plants
3. Jelaskan fungsi ragi atau bibit dalam proses pembuatan produk pangan bioteknologi konvensional tersebut! Unsur apakah yang terdapat dalam ragi atau bibit?
Explanation:
Genetically engineered foods (GE foods), or bioengineered foods are foods produced from organisms that have had changes introduced into their DNA using the methods of genetic engineering. Genetic engineering techniques allow for the introduction of new traits as well as greater control over traits when compared to previous methods, such as selective breeding and mutation breeding.[
Commercial sale of genetically modified foods began in 1994, when Calgene first marketed its unsuccessful Flavr Savr delayed-ripening tomato. Most food modifications have primarily focused on cash crops in high demand by farmers such as soybean, corn, canola, and cotton. Genetically modified crops have been engineered for resistance to pathogens and herbicides and for better nutrient profiles. GM livestock has been developed, although, as of 2015, none were on the market.
English
Hope this helped
When a new viral infection appears in a population,scientists usually try to develop a vaccine against the virus. Which substances would most likely be contained in the new vaccin
Answer:
Antigen, stabilizers, surfactants, diluents, preservatives
Explanation:
Antigen: This is part of the protein structure virus or part of its genetic material. These parts are active. But sometimes, the inactivated form of the virus is also included in the vaccine. Stabilizers: Avoid other chemical reactions occurring in the interior of the vaccine. Surfactants: They prevent the occurrence of sedimentation and agglutination of the elements inside the vaccine. Diluent: Used to dilute the vaccine in an appropriate concentration before being used. Preservatives: As the word says, preservatives avoid any possible contamination of the vaccine. These elements´ use depends on the doses prepared. If it is only for one-person use, then they are not needed. But if the doses are to be used by more than one person, they need preservatives because once the vaccine is opened it is vulnerable to contamination.help is very much appreciated <3 (7th grade science)
Answer:
1. N/A
2. a cell
3. organ system
4.Tissues are groups of similar cells that have a common function. While an organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body.
5.
nervous system - The nervous helps the whole body communicate, our body needs to communicate so we can actually do things like breathing.
respiratory system - The respiratory system gives cells the oxygen they need to survive, and cells keep humans alive. Humans cannot survive without breathing.
digestive system - The digestive system is important for breaking down foods into nutrients, those nutrients are then used to heal and nourish the human body. The digestive system also helps us pass toxic wastes that build up in our bodies, so we don't get sick.
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hope this helps :)
What is the phenotype and the genotype of the white flowered offspring shown in the Punnet square below? Explain how you know by referring to the definition of each.
Answer:
Genotype: The letters that make up the individual. E.g. TT or Tt. ▪ Phenotype: The physical characteristics of the particular trait. E.g. Tall or short. ▪ Dominant trait: Signified by capital letter-E.g. T.
Explanation:
Hope this helps pls mark brainliest.
Which best describes the flow of genetic information?
A. Protein to DNA to RNA
B. DNA to RNA to protein
C. RNA to DNA to protein
D. Protein to RNA to DNA
Answer:
B DNA to RNA to protein
Explanation:
i just did it
Which sentence describes a disadvantage of using nuclear fision to produce
electricity?
A. Fission changes one type of atom into another type of atom,
B. Fission produces only a small amount of energy
c. Uncontrolled fission reactions can result in dangerous explosions,
O D. Fission requires conditions that exist only in the cores of stars.
Answer is C
Answer:
C. Uncontrolled fission reactions can result in dangerous expolosions
Explanation:
The sentence describes a disadvantage of using nuclear fision to produce electricity is uncontrolled fission reactions can result in dangerous explosions. Thus, option C is correct.
Why nuclear fission is different from nuclear fusion?The two ways that nuclear fission is different from nuclear fusion include are the nuclear fission involves one large atom splitting into two smaller atoms and nuclear fission releases a huge amount of energy as the nuclear fusion involves the combination of two or more atoms while Nuclear fission involves one large atom splitting into two smaller atoms.
They both take place in the nucleus of the atom and can be used to generate electricity. They both release energy with the process of nuclear fusion releasing more than nuclear fission.
Fission produces only a small amount of energy and uncontrolled fission reactions can result in dangerous explosions as the Fission requires conditions that exist only in the cores of stars.
Therefore, The sentence describes a disadvantage of using nuclear fision to produce electricity is uncontrolled fission reactions can result in dangerous explosions. Thus, option C is correct.
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In the earlier class, you had prepared the solution of dry yeast for observation of dry yeast. Which
substance is preapred by its use on commercial basis?
plz ans this in one line
Practice 1: Choose all the answer choices that represent the use of trees,
A Heat to cook food
В. Lumber to build homes
C. Materials to make tools
D .Fire to warm homes
Answer:
bc
Explanation:
trust mate i got an a plus i think or a normal a
A basic plant cell is shown.
Plant Cell
X
KEY
W-Vacuole
X-Nucleus
Y-Mitochondrion
z-Chloroplast
w
-Z
Which organelle stores hereditary material and coordinates the activities of the cell?
Organelle W
Organelle X
Organelle Y
Organelle z
Answer:
organelle X
Explanation:
the nucleus controls all activities carried out by the cell
20 POINTS - URGENT PLS HELP!
Examine the characteristics of a molecule listed below
-Is a nucleic acid
-is made up of one strand of nucleotides
-contains ribose sugar
Which molecule do the characteristics describe?
Options:
A: nucleotide
B: base
C: RNA
D: DNA
Which sediment has the greatest permeability?
Some cities hang their traffic
lights from left to right, rather
than from top to bottom.
Explain why this might cause a
problem for a driver with red-green perception deficiency.
Answer:
The angle and location
Explanation:
There are some who can't perceive the order of red and green together. Having it angled up and down is safer because you know out of common sense that red is on top and green is on the bottom. Having it sideways makes the light elevated on the same level, deceiving the eye better.
Some cities hang their traffic lights from left to right rather than from top to bottom, and this causes problems for drivers, as the left-to-right orientation of traffic lights can pose a problem for drivers with red-green perception deficiencies.
What role do traffic lights play?Traffic lights typically have three colors, such as red, yellow, and green, which are arranged in a vertical orientation in most cities, but in some cities, traffic lights are hung in a horizontal or left-to-right orientation, which can be challenging for those who have red-green color blindness. The traffic lights are there to prevent accidents.
Hence, some cities hang their traffic lights from left to right rather than from top to bottom, and this causes problems for drivers, as the left-to-right orientation of traffic lights can pose a problem for drivers with red-green perception deficiencies.
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How are colorful flowers usually pollinated?
in a certain fish, blue scales (BB) and red scales (bb) are codominant. when a fish has the hybrid genotype, it has patchwork of blue and red scales. what is the genotype for blue fish. what is the genotype for red fish. what is the genotype for patchwork fish.
Answer:
BB is blue
bb is red
Bb is patchwork
Explanation:
It can't really be codominant since lowercase letters are recessive, and condomance needs 2 dominant alleles of a different types. So really it should be BB for blue, RR for red and BR for patchwork...
If sodium (Na) bonds with Chlorine (Cl), which statement is true?
Group of answer choices
An electron is shared between sodium and chlorine and a covalent band is formed
An electron is transferred from sodium to chlorine and an ionic bond is formed
An electron is transferred from chlorine to sodium and an ionic bond is formed
An electron is transferred from sodium to chlorine and a covalent bond is formed
Answer:
2
Explanation:
if sodium bonds with chlorine ionic bond formed
Explain the difference between sexual reproduction and asexual reproduction. Explain either an advantage or disadvantage for
each.
In asexual reproduction, reproductive organs aren't used but they're used.
advantage of sexual- A lot of genetic variation. since they have DNA of two parents. they can survive more and adapt more.
disadvantage of asexual- diversity is limited. Since the organism only gets the DNA of one parent, they wouldn't be able to really survive if something happened.They would easily be extinct.
Sorry I can't really cone up with better words but I hope you get the idea. it all comes down to natural selection really if you've learned about it. Hope it helped!!!