Explanation of Evolution:
Evolution refers to a gradual change in DNA. It can also occur by natural selection when certain traits are created by mutations that help an organism survive or reproduce.
Answer:
So technically, evolution is when an organism gradually changes over time during reproduction.
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(This is 7th grade science).
Answer:
Explanation:
skin: y, n, n, n , animal
neurn: y, y, n, n , nonliving
sand: n,n,n,n nonliving
maple leaf y, y, y, y, plant
blood: y, y,n,n animal
e.coil: y, n, n, n bacterial
root hair: y, y, n, n, animal
A change in the nucleotide sequence
produced during DNA replication
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.
When molecules move down the concentration gradient, molecules are moving
from *
an area of low concentration to an area of a higher concentration
areas that are equal in concentration
an area of high concentration to an area of a lower concentration
O areas with low concentration of water to an area of a higher concentration of water
Answer:
(When molecules move in this way, they are said to move down their concentration gradient.) Three common types of passive transport include simple diffusion, osmosis, and facilitated diffusion. Simple Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
Explanation:
I think
What does ambulocetus translate to?
Ambulocetus (meaning "walking whale") is an early cetacean with short limbs and large feet used for swimming. Along with other members of Ambulocetidae, it is a transitional fossil that shows how whales evolved from land-living mammals.
Answer:
Walking whale that swims
Explanation:
its a cetacean with short limbs and large feet used for swimming
2. Which statement below is true regarding cell specialization?
Specialized cells have specialized functions.
Specialized cells are found in unicellular organisms only.
Specialized cells are found in limited numbers in large, multicellular organisms.
Embryos do not contaig specialized cells.
Answer:
Specialized cells have specialized functions
Explanation:
A mangrove community has the following food chain:
Mangrove → mangrove tree crab roseate spoonbil → American crocodile
Which population would be most likely to increase if roseate spoonbills
disappeared from the community?
O A. Mangrove
O B. American crocodile
OC. Roseate spoonbill
OD. Mangrove tree crab
Answer:
D. Mangrove tree crab. There would be a drop in the predators that feed on them. Crocodile populations would drop to food shortage, and mangroves might also suffer from the high crab population, so only D is correct.
Which term describes a single female arctic fox?
Biome describes a single female arctic fox, i guess
Answer:
biome.
Explanation:
By :Organizational Hierarchy
Read my bio
Coracias garrulus is a blue bird with an orange-brown back. The offspring of this bird have an effective defense mechanism. The young birds vomit and cover themselves in a foul-smelling orange liquid when they sense a threat by predators. Which two systems alert the young bird to the danger and help produce the vomit it uses as a defense
Answer:
The correct answer is - Nervous and digestive systems.
Explanation:
Coracias garrulus is a bluebird that has a unique defense mechanism in which it senses the danger or threat they vomit and cover themselves with their foul-smelling orange-yellow vomit.
The orange vomit or liquid store in the digestive system of the bird and when the bird's sense threatens it activates its nervous system which then intern sends a signal to the digestive system and the urge of vomit on its young ones and cover in that.
The nervous and digestive systems are the body systems that alert the young bird to danger and help produce the vomit it uses as a defense.
The nervous system is a body system by which animals coordinate actions and sensory information such as alert signals.The nervous system transmits signals to different parts of the body including the digestive system.The digestive system is the body system that acts to digest foods, having reflexes that allow to eliminate them by vomiting.In conclusion, the nervous and digestive systems are the body systems that alert the young bird to danger and help produce the vomit it uses as a defense.
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Which of the following increases soil acidity?
planting acid-loving plants
adding compost
adding aluminum
acid rain
Answer:
acid rain
Explanation:
Answer: The correct answer is acid rain
Explanation: This answer has been confirmed correct.
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Answer:
tundra⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Answer:
I think its tundra
Explanation:
If animal droppings spread seeds then when spreads it also then which spreads it faster?
A. Animal droppings.
B. Wind.
Answer: Animal droppings
Explanation:
Natural selection causes what to occur?
1. evolution
2. survival of the fittest
The law of independent assortment
3. Mendel's law of segregation
4. genetic drift
Answer:
(1.) Natural selection causes evolution to occur.
Explanation:
Over time, the naturally occurring variation within a population that arise from mutations, alter in frequency. Some of these variants or traits, may confer advantages to certain organisms, allowing them to reproduce and pass on genes more successfully. These traits become fixed within the population, and eventually the individuals evolve to form a species.
Natural selection, acts on evolution, for or against traits. It ensures that individuals with traits well-suited to their environments and reproductive fitness survive.
Answer:
1. evolution
Explanation:
Natural selection causes populations to become adapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.
Suggest two specific reasons why determining the cause of death can sometimes be difficult.
Answer:
1. The person has been dead for a while so the body is old.( Decomposed)
2. The manner or cause of death (injuries)
Explanation:
1.
Determining the cause of death could be difficult if the person has been dead for sometime. This is going to make the body to be more decomposed since the body has become old.
2.
Another reason is if the cause of death is from an accident and the dead person sustained great injuries. The condition of the body would be poor and this is going to make examination difficult.
Explain why the frequency of the tusklessness trait is increasing in the African elephant population. Justify your answer using the principles of natural selection.
Answer:
srjddjj and the way I see that one thing is the best thing that can happen is to be able and not to
Explanation:
semester and the next week yea
Choose all the answers that apply.
Which of the following would be carried by suspension?
clay
large rocks
small pebbles
silt
sand
Answer:
clay
slit
Explanation:
Which are advantages of using renewable resources? Choose all that apply
Answer:
Generating energy
Explanation:
that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution.
Diversifying energy supply and reducing dependence on imported fuels
Burning oil and coal adds ______ to the atmosphere.
Answer:
carbon dioxide
Explanation:
because when these things burn they produce many harmful gases which harm the environment and cause pollution
What is succession and what are the steps to succession? Why is it important?
Answer: Succession Planning is essentially planning for and executing smooth transitions of leadership positions. This includes recruiting new talent, executive search, selection assessments, onboarding the new leader, and successfully transitioning the new leader in and the old leader out.
Carbon sinks are "stopping up"(no longer able to absorb CO^2)because of _________________and ___________________
Answer:
0 and 2
Explanation:
Give an example of how using soil, trees, or air might result in a tradeoff
Answer:
As trees grow, they help stop climate change by removing carbon dioxide from the air, storing carbon in the trees and soil, and releasing oxygen into the atmosphere. Trees provide many benefits to us, every day.Explanation:
sorry if that doesnt help but hopefuly it does:)
By using soil, trees and air will result in a trade off due to increasing in one factor and decreasing in another factor.
Using soil, trees and air result in a tradeoff by using the carbondioxide gas in the atmosphere. The trees increase in high and vegetative growth by decreasing the carbondioxide gas in the atmosphere. In tradeoff, one thing increases, and the another must decrease.
So if the trees grow in size the concentration of carbondioxide gas decreases due to the process of photosynthesis by the tree so we can conclude that using soil, trees and air will result in a trade off due to increasing in one factor and decreasing in another factor.
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a-t base pairs in a dna double helixare chemically distinct from G-C base pairs. form three hydrogen bonds with each other. are more heat stable than G-C base pairs. are not accessible to DNA binding proteins. are of a different length than G-C base pairs.
Answer:
A-T base pairs in a DNI double helix are chemically distinct from G-C base pairs.
Explanation:
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
In the DNA molecule, Adenine (Purine) always form pairs with Timine (Pyrimidine), while Guanine (Purin) form pairs with Cytosine. Two hydrogen bonds unite the pair A-T, while three of them unite the pair G-C.
The structure of these bases is different hence, the chemical structure of the pairs is also different.
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Answer:
50%
Explanation:
Type O is canccelled out, so there is a 50% chance of the baby getting type A blood and a 50% chance of the baby geting type B blood.
The embryonic stage where the embryo cells are arranged into a hallow ball is called
A) Morula
B) Blastula
C) Grastula
D) Fetus
PLEASE NO TIME WAISTERS
Answer:
blastula
Explanation:
According to the passage, what causes mutations during protein synthesis?
A. A wrong base becomes a permanent part of a new DNA sequence.
B. Most mutations happen spontaneously as DNA replicates itself.
C. A great many mutations occur due to chemicals in the environment.
D. Mutations do not occur during the process of protein synthesis.
Answer:
d.
Explanation:
18 points! A BRAINLY IF U ARE CORRECT> QUESTION: When you open the door to a refrigerator for a minute, what happens? Also, Expain your answer.
A. Thermal energy in the air outside the refrigertor is transferred to the inside of the refrigerator.
B. Thermal energy in the refrigerator is transferred to the air outside the refrigerator.
C. The temperature of the air inside the refrigerator decreases.
D. The teperature of the air just outside the refrigerator increase.
Answer:
The Answer is A
Explanation:
Explanation is the thermal heat energy from the outside is transferred by diffusion to the inside of the fridge applicably making the inside hotter and the outside colder in the immediate area.
A widow's peak is dominant over a straight hairline.
The genotypes of the offspring are WW, Ww, ww, and
ww.
A widow's peak is dominant over a straight hairline.
The genotypes of the offspring are WW, Ww, ww, and
ww.
What are the phenotypes of the offspring?
2 widow's peak, 2 straight hairline
3 widow's peak, 1 straight hairline
1 widow's peak, 3 straight hairline
4 widow's peak, 0 straight hairline
Answer:
I think its
C) 1 widows peak 3 straight hairline
Explanation:
Answer:
I believe it is a.
Explanation:
This is becuase 2 are saying that it is dominant for widows peak. And two are saying that straight is dominant.
Are gender traits completely a result of societal expectations?
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No. Gender traits in humans are largely determined by biophysical processes. There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary.
But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to.
This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development
Explain what happens when a population experiences uncontrolled exponential growth.
Answer:
If the population ever exceeds its carrying capacity, then growth will be negative until the population shrinks back to carrying capacity or lower. Some disadvantages of having uncontrolled are the rapid urbanization associated with the population explosion and industrialization has created an imbalance in the ecology of the Southeast Region.
Explanation:
Answer:
When a population experiences uncontrolled exponential growth, the population will increase uncontrollably, leading to more resources being used and reaching the carrying capacity sooner.
Explanation:
6CO2 + 6H20 602 + C6H1206
Molecular Energy in Photosynthesis
Name of
Molecule
Chemical
Formula
Amount of Energy per
Molecule (in kJ per mole)
Carbon dioxide
CO2
799
Water
H20
467
Oxygen
O2
495
Glucose
C6H1206
9,467
Which statement correctly describes the flow of energy in photosynthesis?
A Photosynthesis releases energy when carbon dioxide and water combine to form glucose molecules.
B Photosynthesis releases energy when the reactants rearrange and form the bonds in the products,
Photosynthesis stores energy because energy is released when glucose is formed from carbon dioxide and water.
D Photosynthesis stores energy because more energy is stored in glucose than it is in carbon dioxide or water.
Answer:
Photosynthsis stores energy because more energy is stored in glucose than it is in carbon dioxide or water is the correct answer.
Explanation:
23. A PCR reaction is performed, and the negative control demonstrates the presence of a detectable number of PCR product (amplicons) by capillary electrophoresis. What is the most likely cause?
Answer:
Contamination of the control sample (negative control) with DNA
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories to amplify a target DNA fragment using primer pairs and DNA polymerase. In PCR experiments, it is imperative to include both positive and negative controls. The positive control refers to the amplification of a PCR product (amplicon) of known molecular size during PCR reaction in order to ensure the correct molecular weight of the target DNA fragment. The negative control refers to the inclusion of a sample without DNA in order to ensure that no contamination with DNA has occurred in the other samples.