If a person who commits a crime leaves even the smallest speck of their blood, hair, or other organic matter, the DNA in this material can be amplified by PCR subjected to genetic analysis.
What is the use of PCR in crime scenes?
With PCR, crime scene investigators can extrade strains of DNA into quantities that may be recognized and connected to a suspect. Biologists can produce a couple of copies of character genes to look at gene function, evolution, and different topics.
PCR is a procedure wherein tens of thousands and thousands of copies of a particular collection of DNA may be made in a count number of just a few hours. This is crucial for forensic DNA samples because the DNA regularly located at crime scenes is constrained in each amount and quality.
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What is the process which nitrogen is brought into organic molecules called?.
Answer:
i think nitrogen fixing
Explanation:
THATS ALL I KNOW
Water absorbed through the GI tract is referred to as ______ water. Multiple choice question. obligatory preformed metabolic respiratory
Water that is absorbed by the Gastrointestinal tract is called nutrient which is absorbed by small intestine after it has been breakdown.
What is GIT?The gastrointestinal tract refer to the passageway of the digestive system or organs of the digestive system that begin from the mouth to the anus. The GI tract comprises of organs of the digestive system and they include esophagus, stomach, and intestines. The GIT help in digestion and absorption of nutrient.
Therefore, Water that is absorbed by the Gastrointestinal tract is called nutrient which is absorbed by small intestine after it has been breakdown.
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The constant diameter of the double helix is ensured because hydrogen bonding is always between a base (A and G) and a base (T and C).
A. True
B. False
why should we study soil what is the inportance of this unit
Answer: Soil filters our water, provides essential nutrients to our forests and crops, and helps regulate the Earth's temperature as well as many of the important greenhouse gases. It is a very important aspect of the world. It can lead to many discoveries about the Earth.
Explanation: The soil is the foundation of basic ecosystem function.
Answer:
Soil is fundamental for a healthy food production. It provides essential nutrients, water, oxygen and support to the roots, all elements that favour the growth and development of plants for food production. Soil is the basis of food systems as well as the place where all plants for food production grow.
Which of these are functions of the ear? (Select all that apply)
hearing
emitting sound waves
balance
receiving light energy
Answer:
hearing
Explanation:
you use your ear to heare
Answer:
emitting sound waves and hearing
Explanation:
________ is/are a natural source of air pollution that is/are not influenced by human activity.
Answer:
Gas and I mean air gas not liquid gas.
Explanation:
Hope you get it right!
ANSWER IS A
The biodiversity of cultivated crops is currently under threat from industrial
farming and climate change. The extinction of important crop plants
cause mass starvation. Which of the following is the best way for humans to could
use a seed bank to help prevent this problem?
• A. By
storing a great variety of seeds in case one variety goês
in the wild
extinct
• B. By storing a large number of seeds that can be eaten when famine
occurs
• C. By growing a large quantity of crops from seed and selling the
food they produce
• D. By growing a large quantity of
food they produce
crops from seed and storing the food they produced
The best way for humans to use a seed bank to help prevent the threat to biodiversity of cultivated crops is by storing a great variety of seeds in case one variety goes in the wild extinct.
What is biodiversity?
Biodiversity refers to the variety of life forms that exist on Earth, including the different species of plants, animals, fungi, and microorganisms, as well as the genetic diversity within each species, and the diversity of ecosystems and biomes. Biodiversity is important because it supports the basic ecological processes that sustain life on Earth, such as photosynthesis, nutrient cycling, and pollination. It also provides us with a wide range of ecosystem services, such as clean air and water, food, medicine, and cultural and recreational opportunities.
The best way for humans to use a seed bank to help prevent the threat to biodiversity of cultivated crops is option A, which involves storing a great variety of seeds in case one variety goes extinct in the wild. This approach is important because it helps to preserve the genetic diversity of crop plants, which is essential for breeding new varieties that can withstand changing climate conditions and resist diseases and pests. Storing seeds in a seed bank provides a backup in case a particular crop variety becomes extinct in the wild. It is a cost-effective way to protect the genetic diversity of crop plants and can serve as a long-term solution to the problem of food insecurity.
Option B, storing a large number of seeds that can be eaten when famine occurs, may provide short-term relief during a food crisis, but it does not address the root cause of the problem, which is the loss of biodiversity in cultivated crops. Option C, growing a large quantity of crops from seed and selling the food they produce, and option D, growing a large quantity of crops from seed and storing the food they produced, are both important for food production, but they do not directly address the problem of biodiversity loss in cultivated crops.
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its A
just took the test
Question 1
Which statement about cells is false?
a
b
Different cells work together to form tissues and organs.
Cells are the basic structure of living things.
New cells contribute to growth and repair.
Cells contribute only to the reproduction of an organism.
C с
d
Answer:
the last one which I'm guessing is d......cause it kinda messed up
Different proteins affect different traits.
True
False
Answer:
True
Explanation:
It is true because our protein has a big effect on our traits.
I hope it helps! Have a great day!
Pan~
Assume that hair texture is determined by a single gene. Describe three possible alleles for the hair texture gene
p(allele for the frequency of straight hair) and q(the frequency for curly hair). Here is an article that should help further explain hair phenotypes!
hetech.org/ask-a-geneticist/three-equally-represented-phenotypes
An organic disorder whose symptoms tend to develop gradually and worsen over time is __________. a. bulimia b. anorexia c. delirium d. dementia
An organic disorder whose symptoms tend to develop gradually and worsen over time is dementia.That is option D.
What is organic disorder?An organic disorder is a mental disturbance that can affect the brain cells as well as causes hormonal abnormalities.
Examples of organic disorders are:
dementia, deliriumAlzheimer's disease, andamnesia.Dementia is an organic disorder that causes an impaired ability to remember, think, or make decisions that interferes with doing everyday activities. This is a long term organic disorder unlike delirium which is short term.
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Water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a(n) __________ in tubular fluid volume that is __________ to plasma.
Water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
What do you mean by Proximal tubule?A Proximal tubule may be defined as the portion of the nephron that lies in between Bowman's capsule and the loop of Henle.
The major function of the proximal tubule is to reabsorption of sugar, sodium, chloride ions, and water from the glomerular filtrate. It decreases the volume of tubular fluid.
Therefore, water and sodium ions are reabsorbed in the proximal tubule in a relationship that results in a decrease in tubular fluid volume that is isotonic to plasma.
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WHAT problem was the electric toothbrush supposed to solve?
Answer:
Brushing too hard can erode the enamel on your teeth and cause gum recession. Many electric toothbrushes can solve this problem, too. They have pressure sensors that warn you if you're pressing too hard. That way, you can develop a proper touch that will remove plaque, but not damage your teeth and gums.
Explanation:
Electric toothbrush bristles vibrate or rotate to help you remove plaque buildup from your teeth and gums. The vibration allows for more micro-movements every time you move your toothbrush across your teeth
John rides his bike 2.3 km to school. After school, he rides an additional 1.4 km to the mall in the opposite direction. What is
his total distance traveled?
2.3 km to school.
1.4 km to the mall.
to find:total distance traveled by John.
solution:to find the total distance traveled just find the sum.
2.3 + 1.4
= 3.7 km
therefore, the total distance covered by John is 3.7 km.
What method would a scientist use to learn about the number of individuals of a field of strawberry plants?
Answer:
i'm not sure of this but i think it is the scientific method?
Explanation:
the scientific method is to study the outside world with observation and to do multiple different tests to get accuracy
does anyone know what this is?:)
name two minerals elements that are necessary in the synthesis of chlorophyll
Answer:
Iron and Magnesium are the elements
When is the BEST time to address stressful situations that can easily turn to anger?
When you are rested, focused, and prepared to handle them
When you are too tired and distracted to be angry
When others involved are ready to address the problem
As soon as the stressful situation arises
If you laboratory practical exam is asking you to identify an organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle, you can be sure the organism is a
Euglena is the organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle.
What is Euglena?Euglena is a microorganism that belongs to the eukaryotes. The possess the following characteristics:
Euglena lacks a cell wall but the cell is surrounded by proteinaceous strips. It has a pellicle made up of a protein layer supported by a substructure of microtubules.Therefore, Euglena is the organism that lacks a cell wall, but does have a proteinaceous layer called the pellicle.
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During an activity, students were given cards with different types of cells, tissues,
organs, and organ systems printed on them. Their task was to sort the cards into
labeled boxes, as depicted here, to show where they belong in the organization of
living things. Into which box or boxes could the card be placed that is labeled with
the term "Blood"?
A) Cells
B) Cells and Tissues
C) Tissues
D) Tissues and Organs
Blood is composed of a group of cells and therefore is classified as a tissue.
What is the organization of life?Organization of life is the organization of life into different levels based on complexity and function.
The levels of organization of life are:
cellstissuesorganssystemsCells are the basic unit of life.
A group of cells performing related functions together as a unit are known as tissues.
Blood is composed of a group of cells. Thus, blood is a tissue.
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What causes scientist to disagree
Answer:
Unreasonable explanations and blurry proof. Also if the person who made a theroy for example, and they are brand new, and they didn't use much resources and had a thought.
Explanation:
Scientests disagree about several things. Thus they conduct expirements, if it fails, they disagree. If it suceeds they agree.
Describe the process that maintained a stable tasmanian devil population size before the appearance of dftd in 1996.
The Tasmanian devil population size before the appearance of dftd in 1996 was stabilized by genetic variation and gene flow.
What is Tasmanian devil population?The Tasmanian devil population is the world's largest marsupials. They were of brown color and with a size of a bear baby.
They have very sharp teeth and muscular and strong jaws, that makes it an animal with the most powerful bites in mammals.
These animals are currently in endangered, their population reduce due to shortage of food.
Thus, the Tasmanian devil population size before the appearance of dftd in 1996 was stabilized by genetic variation and gene flow.
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The process of photosynthesis resulted in (as in when photosynthesis first appeared on Earth)...
A. significant changes in the atmosphere.
B. extinction.
C. The evolution of multi-cellular life.
D. all of the above.
100 POINTS TO WHOEVER ANSWER ALL THE QUESTIONS
1. Make field observations supplemented with online or offline research regarding one source of water or air pollution in your region.
2. Assess the severity of the pollution generated and discuss the impacts of the pollutants on human health. If air pollution is involved, identify its possible effects on the ozone layer, acid rain, or greenhouse gas emissions.
3. Explain if the source of pollution is point or non-point.
4. Identify pollution control measures. Speculate on ways that the pollution could be further reduced
Answer:
Are these true or false questions or-?
Explanation:
I can answer in comments if they are..
In the photos there is part A and B I didn't know what to wright for part C
For part D this is what I put
( When High Particle Levels are Expected, Take these Extra steps to Reduce Pollution:
Reduce the number of trips you take in your car.
Reduce or eliminate fireplace and wood save use.
Avoid burning leaves, trash, and other materials.
Avoid using gas-powered lawn and garden equipment. )
Also there is a part E you press the 1 photo thing it's by the Equation Editor you then have to press my device go to a new tab look up source pollution btw and jus drag that image from that tab to your schooling tab and place it in the box it will automatically go in the box and into you answer part. idrk but that's what I know
you're welcome!
which of the following statements describes ann natural selection acting on a population
why do brain cells do brain things
They are building blocks of your brain, and transmit information to other neurons, muscles, and tissues throughout the body. They allow you to think, feel, move, and comprehend the world around you.
hope it helps...!!
The ________ both transports urine outside the body during urination and transports semen to the female reproductive tract during intercourse.
Answer:
Urethra
Explanation:
Answer:
The ________ both transports urine outside the body during urination and transports semen to the female reproductive tract during intercourse.
Explanation:
Urethra
1. Do you think that parents should be able to use science to determine whether or not an unborn child will have a genetic disorder?
2. Is this taking science too far?
3. Should taxpayer dollars be used to do additional research into detecting genetic diseases that could be determined before birth?
Answer:
All of these are personal opinion so I would personally suggest learning about these on your own as well as here.
Which of the following is an example of mechanical control of nonnative species? a. pesticides b. herbicides c. net barriers d. inspections please select the best answer from the choices provided a b c d
Answer:
The answer is c. net barriers.
Non-native species can do a great harm to native species or ecosystem and there are many ways to control them. Net barriers are mechanical control. Pesticides and herbicides are chemical control. There are also natural (biological control) control, such as diseases and pests, and environmental control, by altering the environment.
What are a type of filament system in eukaryotes that form non-polar paired filaments and bind GTP?