Why should plastic bags be avoided for collecting and storing biological samples containing DNA?

A. They leach chemicals.
B. They are difficult to store.
C. They are expensive.
D. They retain moisture.

Answers

Answer 1

Answer:

b

because they are difficult to store

Answer 2
the answer is b they are difficult to store

Related Questions

When the Australian wildfires occurred, what short-term effect did the
ecosystem experience?
A. Plants and/or animals relocated or died.
B. All of the plants died but the animal population increased.
C. There was no effect on the ecosystem.
D. The trees grew back quick and the animals were not affected

Answers

Answer:

A. Plants and/or animals relocated or died.

Explanation:

Plants and animals will eventually come back, so that is a short-term effect on the ecosystem.

Hope this helps! :)

How does reproduction impact plant growth and survival?

Answers

Answer:

nutrients are major determinants of plant growth and productivity in nature

Explanation:

what are ionic bonds?

Answers

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, or between two atoms with sharply different electronegativities, and is the primary interaction occurring in ionic compounds

Hope this helped :)
A chemical bond between two ions with opposite charges.

My test is timed, who ever answer this first will be Brainliest, How many genes for each trait does a child inherit?

Answers

Answer:

One allele for every gene in an organism is inherited from each of that organism's parents.

Explanation:

Answer:

These two copies of the gene contained in your chromosomes influence the way your cells work. The two alleles in a gene pair are inherited, one from each parent.

Explanation:

Which statements describe aspects of what causes wind to blow? Select two options.

Answers

Answer:

statements describe aspects of what causes wind to blow is Wind is caused by differences in air pressure. Explanation: Due to different rate of heating and cooling of air there is difference of the air pressure on the surface of the land.Apr 10, 2020

Answer:

The Correct Answer is A and C.

Explanation:

The wind is the movement of air, the movement of air is happened by the difference in pressure.

A difference in air pressure is what causes the wind to blow. Difference in pressure is happened by the uneven heating of the earth's surface.

The wind is normally moving air from a high air pressure place to a low air pressure place.

The greater the difference in air pressure the stronger the wind blow.

(this is for EDGE)

Define the verb "adapt". Does survival in a particular environment through coping is synonymous with evolution? Why or why not?

Answers

Answer:

The word adapt means to get adjusted to a change.

yes, survival in a certain environment is similar to evolution. Both must use adaptation in order for life to keep living through changes in the environment. Each help life sustain itself in a very unique way.

Explanation:

The word adapt means to get adjusted to a change.

Yes, survival in a certain environment is similar to evolution. Both must use adaptation in order for life to keep living through changes in the environment. Each help life sustain itself in a very unique way. In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. Adaptation is the process of adjusting something to better match it's environment or situation. Evolution is a broad term that refers to any change in anything over time.

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a) If Earth's history has lasted 4.6 billion years (4600 million years), and one calendar year has 365 days, how many years would be represented by one calendar day?

Answers

If we take the age of Earth—4.5 billion years—and compress it into one year 144 years would be 1 second

The number of years would be represented by one calendar day is to be considered as the 144 years.

Calculation of the number of years:

Since

Earth's history has lasted 4.6 billion years (4600 million years), and one calendar year has 365 days

So here it should be like 144 years

hence, The number of years would be represented by one calendar day is to be considered as the 144 years.

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Yeast cells have 16 chromosomes and reproduce asexually. How many chromosomes would its diploid cell have?

Answers

Answer:

fourty six chromosomes

I think that 46 is the answer :)

how do scientists know living things are related to eachother? (there are two way)​

Answers

Answer:

scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms.

There are two types of joints. One is movable and the other is called what?
flexible
muscular
immovable
optional

Answers

Answer:

Knee

Explanation:

I thinko

Immovable if I remember correctly

Story #1
Once upon a time, there lived a population of mountain people whose members all had wings but different
types-either bat wings or bird wings. 40% of the population had bat wings and 60% of the population had bird
wings. One day, a storm hit that lasted for several weeks. Those with bat wings were able to fly around and
find food because their wings were water resistant, while those with bird wings were not able to get food
because their feathers were not water resistant and got soaked through. Many of the bird-winged people starved
and did not survive, so their alleles decreased in the gene pool, lowering the frequency of the bird wings in
future generations. Over many generations, the environment had more and more long periods of rain and the
genetic makeup of the population shifted to 10% with bird wings and 90% with bat wings.
What is the trait being described?
What are the variations that exist in this population?
3. How did the event lead to the change in allele frequency?
Alleles?
4. What type of evolutionary mechanism did this story show?
5. Was there an adaptation in this story? If so, identify it.
6. Did the change make the population more or less similar to other populations?
7. Would this increase or decrease reproductive isolation?
Increase or decrease speciation?
8. Did the new population change for the better, worse, or have no effect? Why?

Answers

Answer:

The trait being described is the ability to fly in rainy season.

Explanation:

The trait being described is the ability to fly in rainy season. The people with bat wings and people with bird wings are present in the population. The event lead to the change in allele frequency because the population of people with bird wings die due to starvation. Yes, the bat wings were adapted to that environment so they are able to survive. The change make the population less similar to other populations because population of people with bat wings increases as compared to other population. Yes, the new population change for the better of the ecosystem because the population is able to controls the population of other species in the ecosystem.

Which is the preserved evidence of the activity of an organism a) cast b) mold c) fossil film d) trace fossil

Answers

Answer:

fossil film

Explanation:

A carbonaceous film or carbon film is an organism outline of a fossil. It is a type of fossil found in any rock when organic material is compressed, leaving only a carbon residue or film. ... Fossils usually form when sediment buries a dead organism.

The preserved evidence of the activity of an organism is trace fossil. The correct option is d.

What is trace fossil?

Animal behavior is what creates a trace fossil. A trace fossil might be something like a dinosaur footprint or an arthropod burrow. Beetles' pre-fossilization burrows can be seen as holes in this petrified wood.

When an organism leaves an impression in mud or sand, a trace fossil is created. Sediment dries out and becomes harder.

A fresh sediment layer has been added on top of it. The remnant fossilizes as the sediment hardens into rock as a result of cementation and compaction.

Body fossils are the hard parts of an individual creature or plant that have been preserved over time. Trace fossils are the best-preserved examples of an organism's past activity.

Thus, the correct option is d.

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Choose the word that best completes each sentence.

Bacteria cells have a rigid cell
that gives the bacteria its shape.



The outermost structure of the bacteria cell is the
, which comes in contact with the environment.



Some bacteria have
, or whiplike tails that spin to propel them forward.

Answers

Answer:

1 wall

2 capsule

3 flagella

Explanation:

Just got this right :]

Answer:

1. wall

2. capsule not cell wall!!!!

3. flagella

Explanation:

don't put cell wall for number 2 i got it wrong

In two sentences explain the difference between incomplete dominance and complete dominance.

Answers

Answer:

In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.

Explanation:

A cell that is placed in distilled (plain) water will swell up because it fills
with water. Which process causes the cell to swell?

Answers

Answer:

If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst. A hypertonic solution means the environment outside of the cell has more dissolved material than inside of the cell. If a cell is placed in a hypertonic solution, water will leave the cell.

Explanation:

I hope this helps! ^^

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proteins are made at the ?blank

Answers

Answer:

below

Explanation:  Ribosomes cell

How has law enforcement and U.S racially effected black communities.

Answers

Explanation:

For example , black people may be arrested more frequently in part because they experience greater poverty.

AQUATICS SCIENCE I need help please

Answers

Answer:

a spring

Explanation:

it is the source of the river

Answer: A spring.

Explanation:

Which of the following statements is true?
hurry please
A.The boiling point is higher for 100 liters of water than for 10 liters.
B.During deposition, a gas changes directly into a solid.
C.The condensation points for oxygen and hydrogen are the same.
D.All of the above.

Answers

Answer:

B. During deposition, a gas changes directly into a solid

Explanation:

First we can cross of A, because the boiling point is the same it just takes longer to get there.

So since A. is incorrect, that means D. has to be incorrect too. That leaves us with B. and C.

Finally, I already know what deposition is so since it is not D. it has to be B.

4. What best describes the role of mutations in evolution?

a. Mutations are not necessary for evolution because they are not herita

b. Mutations are useful for evolution to occur because they promote ger

uniformity within a population.

c. Mutations are essential for evolution to occur because they produce

variations within a population.

d. Mutations are essential for evolution to occur because they are respo

environmental changes.

Answers

Answer: option C.

Mutations are essential for evolution to occur because they produce variations within a population.

Explanation:

This is because Mutation refer to change in the genetic content or DNA composition of organisms. Therefore , for evolution to occur there must be Mutation because it is the main source of genetic variation or causes genetic variation needed for evolution.

Mutation is important as the basics of evolution because it produce a new DNA sequence for a gene function, which lead to the formation of new allele.

Which geological feature can be created by a divergent boundary?

A) mid-ocean ridge, rift valley
B) mountain chains
C) earthquakes
D) volcanos

Answers

Answer:

A. Mid ocean ridge

Explanation:

A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.

The mid-ocean ridge, rift valley is a geological feature can be created by a divergent boundary. Therefore option A is correct.

A divergent boundary is a type of tectonic plate boundary where two lithospheric plates move away from each other. This movement creates a gap or space between the plates, allowing magma from the asthenosphere (the partially molten layer of the Earth's mantle) to rise and fill the void.

As the magma reaches the surface, it cools and solidifies, forming new crust. This process occurs primarily in the oceanic lithosphere, resulting in the formation of mid-ocean ridges.

Mid-ocean ridges are underwater mountain ranges that run along the seafloor and span across the Earth's oceans.

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In the process of glycolysis, four ATP molecules are synthesized from four ADP molecules. Why does glycolysis not yield four molecules of ATP?

A TWO ATP molecules are lost in the cytoplasm.

B. Two ATP molecules are converted immediately back to ADP.

C. Two ATP molecules are required to start the process.

D. Two ATP molecules are absorbed in the mitochondria

Answers

Answer:

c

Explanation:

two ATP molecules are required to start the process. initially when glucose is phosphorylated it requires energy which is provided by the hydrolysis of ATP so 2 molecules are used up.

Glycolysis does not yield four molecules of ATP because two ATP molecules are required to start the process. Hence option C is correct.

What is ATP?

ATP stands for adenosine triphosphate. It is defined as an organic substance that fuels a variety of functions in living cells, including chemical synthesis, condensate dissolution, nerve impulse transmission, and muscular contraction. When the cell needs energy, ATP can be taken out and used to fuel processes or stored for use in later ones.

Glycolysis is defined as the pyruvic or lactic acid is produced as a result of the enzymatic breakdown of a carbohydrate using phosphate derivatives, and energy is stored in ATP's high-energy phosphate bonds. A linear metabolic process called glycolysis uses enzymes to catalyze reactions that break down glucose into two molecules of pyruvate or lactate depending on whether oxygen is present.

Thus, Glycolysis does not yield four molecules of ATP because two ATP molecules are required to start the process. Hence option C is correct.

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What is the name for the loose layer on top of soil created by fallen leaves and plant remains?

1. Topsoil
2. Loam
3. Litter
4. Humus

Answers

Topsoil layer

Sorry if I'm wrong

The name is topsoil.

Why do you only need one copy of a dominant trait gene to have that trait?

Answers

Answer:

Each gamete contains a single copy of every chromosome contains one allele for every gene. There for, each allele for a givin gene is packaged into a separate gamete. For example: a fly with the genotype Bb will produce two types of gametes:B and b

_______ are chemical messengers that are produced in one body region but affect a different body region

Hormones
Enzymes
Neurotransmitters
Nucleic acids

Answers

Answer:

Hormones

Explanation:

Meningitis may be transmitted from one person to another by:

water
sneeze
cough
soil

Answers

Answer:

cough!!!!

Explanation:

Where does the mRNA go after it is produced?​

Answers

Answer:

The mRNA goes after it is produced is made messenger RNA (mRNA) is a single-stranded RNA molecule that is complementary to one of the DNA strands of a gene. The mRNA is an RNA version of the gene that leaves the cell nucleus and moves to the cytoplasm where proteins are made.

Explanation:

mRNA formed in the nucleus is transported out of the nucleus and into the cytoplasm where it attaches to the ribosomes. Proteins are assembled on the ribosomes using the mRNA nucleotide sequence as a guide. Thus mRNA carries a “message” from the nucleus to the cytoplasm.

Who was the first to try vaccination (NOT VACCINE BUT THE SIMILAR METHOD)

Answers

Answer:

Traditional Indian and Chinese medicinal

systems sometimes deliberately rubbed the

skin crusts from smallpox victims into the

the skin of healthy people. They thus hoped to

induce a mild form of smallpox that would

create resistance against the disease.

Answer:

Traditional Indian and Chinese medicinal

systems??

helppppppp like frrrrrr

Answers

Answer:

A = rough er

B = chloroplast

D = Cytoplasm

C = most likely a lysosome

E = cell wall

What happens to a cancer cell when it becomes damaged?

Answers

Answer:

More cells get produced to make the cancer worse, or if it breaks enough, it will break

Explanation:

Answer:

It will just multiply

Explanation:

Other Questions
Select the correct location on the graph.Graph the polnt that has the coordinates (12, (?-5).521-7 -6 -5 -4-3-2-1123456-1-2-3-6 The floor of a room with dimensions 16 by 12 is covered with square tiles, each of length 0.32. How many of such tiles will be needed to cover one third of the room? Are you a carbon copy of an individual or group of people or do you have your own voice? The controller of the South Charleston plant of Ravinia, Inc., monitored activities associated with materials handling costs. The high and low levels of resource usage occurred in September and March for three different resources associated with materials handling. The number of moves is the driver. The total costs of the three resources and the activity output, as measured by moves for the two different levels, are presented as follows: Resource Number of Moves Total Cost Forklift depreciation: Low 4,000 $3,200 High 15,000 3,200 Indirect labor: Low 4,000 $83,200 High 15,000 147,000 Fuel and oil for forklift: Low 4,000 $ $3,550 High 16,000 11,360 Required:If required, round your answers to two decimal places. Enter a "0" if required.1. Determine the cost behavior formula of each resource. Use the high-low method to assess the fixed and variable components.Forklift depreciation:V $F $Y $Indirect labor:V $F $Y $ + $XFuel and oil for forklift:V $F $Y $X2. Using your knowledge of cost behavior, predict the cost of each item for an activity output level of 11,000 moves.Forklift depreciation $Indirect labor $Fuel and oil for forklift $ It is 6.417.5 km from Indianapolis to London, England. The Flash can make this trip in 1hour and 35 minutes. How fast is this in miles per hour? help me PLEASE fill in the verse blanks. when u and the bois take nerf to far Your first submission for the CIS 210 Course Project should include the following functionality: - Requests the user to input his/her first name - Formats the name to capitalize the first letter and makes all remaining characters lowercase, removing any spaces or special characters - Output the formatted name to the console 8x-2*4 simplified area of the rectangle An equilateral triangle has an altitude of 21 inches. What is the sidelength of the triangle?14 27 27 314 3 How many molecules in 4.10 mol H2O?6.0210^231.410^232.4710^241.1510^-23 What did the Tenure of Office Act do?A)It forced the President to get Congressional support before hiring and firing government officials.B)It put term limits on how long a Senator could serve in the U.S. governmentC)It required the President to consult Congress in legal matters. Define: Contribute * consider the following at 8 p.m. a diabetic is found to have a blood pH of 7.33 is Brian tells his diaphragm to contract more frequently so that his breathing rate increases consider how is considering homeostasis is restored what effect would this have on his PH range is hicity and hydrogen ion concentration . Humans use surface freshwater for THERES MORE THAN ONE ANSWERagriculturedrivingfactoriesswimming could someone help me please. I need help with this look at picture Complementary angles 3 classmates share 2 granola bars equally. Exit TicketPriya says, "There are exactly four points thatare 3 units away from (-5,0)." Lin says, I thinkthere are a whole bunch of points that are 3units away from (-5,0)."Do you agree with either of them? Explainyour reasoning. Which factor determines how well aerated a soil is?size of porespHorganic matter in soilmaterials dissolved in waterWILL GIVE BRAINLIEST!!!