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

What are 2 facts about energy?

Answers

Energy can neither be created nor destroyed.

Energy can only be changed from one form to another.

Explain how diffusion is used to support the life processes of animals.

Answers

Answer:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow.

Explanation:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.

Oxygen and glucose react to form carbon dioxide and water along with ATP (a source of energy) in the process of aerobic respiration. Therefore, oxygen and glucose must be taken up by the cell, and typically the concentration of these molecules outside the cell is greater than inside. Therefore, the overall net movement of these molecules will be down the concentration gradient, and they will move into the cell via diffusion. Similarly, the carbon dioxide produced is a waste product and moves out of the cell, again via diffusion down its concentration gradient.

PLEASE HELP I WILL GIVE BRAINALIST

Answers

Answer:

I think your answer is B).

Answer:

B An docrcase in water temperature

Riddle Time! What do you call a cow with no legs? This question is solely for the purpose of getting points. Incorrect answers don't even matter.​

Answers

Answer:

lol

Explanation:

thx for the points!

Answer:

Ground beef.

Explanation:

You can blame Teen Titans Go! for me knowing that. I didn't even like the show and I remember that smh

HELP i need help with this it’s due today

Answers

Answer:

It is A, as higher elevations are colder in climate

Explanation:

The instructions, or 'code', in our DNA is dependent upon the order of the _____ in the DNA
-phosphates
-proteins
-bases
- sugars

Answers

Answer:

C. Bases

Explanation:

Deoxyribonucleic acid, commonly known as DNA, is the a type of nucleic acid that serves as the genetic material in living organisms. DNA holds information or instructions needed for the synthesis of useful products like proteins that is responsible for growth, reproduction, and general survival of organisms. Hence, it is referred to as the "BLUEPRINT OF LIFE".

However, in the structure the of the DNA molecule, it contains certain monomeric building blocks called NUCLEOTIDES. These nucleotide bases are of four types namely: Adenine, Thymine, Guanine and Cytosine. It is upon these order of nucleotide bases that instructions, or 'code', in our DNA is dependent upon.

Only laboratories BSL-3 and higher require fire extinguishers, emergency showers and eye wash stations.

Answers

Answer:

false

Explanation:

Fire extinguishers, emergency showers and eye wash stations are basic safety elements that must be present in all laboratories, regardless of their classification. This is because these are essential elements for common accidents in laboratories and can be easily solved with their presence.

Which is a carbohydrate monomer
O glucose
O sucrose
O glucagon
O glycogen

Answers

Answer:

sucrose

\

Explanation:

(GIVING BRAINLIEST!!)

Which processes directly connect the ocean to the water cycle?

A) Condensation and runoff
B) Precipitation and melting
C) Evaporation and condensation
D) Evaporation and precipitation

Answers

Answer:

D

Explanation:

I took the test for flvs, it was correct.

The process that directly connect the ocean to the water cycle is evaporation and precipitation. The correct option is D.

What is water cycle?

The water cycle is a biogeochemical cycle that describes the continuous movement of water on, above, and below the Earth's surface. It is also known as the hydrologic cycle or the hydrological cycle.

The water cycle depicts the continuous movement of water within the Earth's and atmosphere's atmosphere.

It is a complicated system with numerous processes. Liquid water evaporates into water vapour, condenses into clouds, and falls back to earth as rain and snow.

The water cycle describes the exchange (cycling) of water through Earth's land, ocean, and atmosphere. Evaporation and precipitation are the processes that directly connect the ocean to the water cycle.

Thus, the correct option is D.

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What are some of the differences between a forensic autopsy technician and a forensic pathologist assistant?

Answers

Answer:

The differences between a forensic autopsy technician and a forensic pathologist assistant are as follows:

Forensic autopsy technician generally work in morgues and hospital while forensic pathologist assistant work in research laboratories and hospital laboratories.Forensic autopsy technician are responsible to prepare the dead body for autopsy while Pathology assistants do research on the tissues of body.Autopsy technician handle morgue examination area, while pathology assistants handles laboratory examination area.

The hours of daylight can vary greatly because of latitude. How would being near the equator shape the amount of sunlight per day in those countries? Explain your answer.

Answers

Answer:

Explanation:

The amount of daylight that is received is directly proportional to how close the sun is to each hemisphere. This happens due to Earth's inclined axis which changes as the Earth rotates and causes more daylight in the Northern or Southern hemispheres which is when summer starts in each. That being said the Equator is the only location that has an even amount of sunshine all year round. This is why it is always hot and Equator cultures only recognize dry and wet seasons but still consider it summer all year round.

How can knowledge of cell structure and function help in the fight against infectious
diseases?

Answers

Answer:

if you know how a cell functions then you know where it can potentinally be injured or killed.

A) Yes,because the amino acid changed.

B) Yes,because every mutation changes the amino acid .

C) No , because the amino acid not change


ASAP​

Answers

Answer: B

Explanation:

Which characteristic is true of sexual reproduction but not of asexual reproduction?

Answers

Answer:

sexual reproduction involves to organisms

Explanation:

What are three kinds of volcanoes? What makes them different?

Answers

Answer:

Composite, shield, cinder cones, and supervolcanoes are the main types of volcanoes.

Composite volcanoes are tall, steep cones that produce explosive eruptions.

Shield volcanoes form very large, gently sloped mounds from effusive eruptions.

Volcanoes have several shapes, which are controlled by the composition of the magma and the nature of its eruption. If a volcano produces very fluid lava (low in the compound SiO2, or silica), the magma flows a long distance before it cools, making a flat, shield-shaped volcano.

Explanation:

which statement correctly describes how the amount of ofoxygen in the earth’s atmosphere has changed over time?

Answers

Answer:

Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen. Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass.. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 and trace gases.

Explanation:

how would you describe what the cells of each stage of the cycle look like ? what are the visible features of the cells.
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis​

Answers

Interphase:

Is known as the resting stage. Replication of DNA occurs.

- G1

-S

-G2

Prophase:

The chromosomes are visible,  centrioles are formed and begin to move to opposite sides. This is where you see the dissolving of the nuclear membrane.

Metaphase:

The chromosomes line up in the centre of the cell.

Anaphase:

This when the cell divides (should look like two circles splitting) you will see the spindles begin to shorten which pull chromatids apart.

Telophase:

The nuclear membrane is reformed.

Hope this helps (:

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Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?

Answers

Answer:c

Explanation:

c

Embryology is used in evolution because similar structures often also exhibit a common evolutionary origin.

Embryology refers to the discipline that studies the early development of an organism.

Evolution is a biological process associated with descendence with modification, thereby evolutionary close organisms share similar features.

Embryology often evidences evolutionary relationships due to the resemblance between structures found in different organisms.

In conclusion, embryology is used in evolution because similar structures often also exhibit a common evolutionary origin.

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The dandelion is a successful weed. Explain why its adaptations make it a better competitor than many other plants on a school field or a garden lawn.

Answers

Answer:

The correct answer is - dandelion weeds adapted many tricks to reduce all other competitors as it is invasive species.

Explanation:

The dandelion is a successful weed. It's got a lot of adaption to eliminate or dominate other plants and weeds, such as ethylene gas released by its rosette of leaves that prevent other plants from growing near dandelion.

Seeds of dandelion also adapted seed dispersion tactic by seed-parachutes into the wind.  Dandelion weed does not require to be pollinated and rapidly increases their numbers. Dandelion has a taproot that goes deep into the soil, up to three feet down for water and nutrients.

In which phase of mitosis do the sister chromatids get pulled apart to opposite ends of the cell?

Answers

Answer:

i don't know answer for this

Answer:

Telophase

Explanation:

what is the cell theory​

Answers

Answer:

a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter

the cell theory is the theory that everything is made up of cells.

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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how much body parts does a blue whale have ?

Answers

A whale has 9 body parts the Blowhole, Dorsal fin, Ear, Eye, Flipper, Flukes, Mammary glands and the rostrum and the blue whale has 356 bones.

For a certain plant, purple flowers (allele: P) are dominant and white flowers (allele: p) are recessive. A heterozygous purple plant is crossed with a true-breeding (purebred) white plant. What are the possible genotypes (allele pairs) of the offspring?

Answers

Pp=50% and pp=50% so it’s a 50/50 chance of what the offspring will be

The possible genotype of all the offspring will be PP, and Pp as per the given situation.

What is genotype?

An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.

The term "genotype" broadly refers to an organism's genetic make-up; in other words, it characterizes an organism's whole gene pool.

The phrase can also be used to describe to the alleles, or different forms of a gene, that an organism carries in a more specific meaning.

In the Punnett square attached, the genotype of the organism is PP and Pp, which means the generation will be having purple flower.

Thus, the possible genotype will be 50% PP and 50% Pp.

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why are calendar years rounded

Answers

Answer:

The differences arise because it actually takes the Earth around 365.25 days to make a full orbit. This value is rounded down for the sake of our timekeeping.

Explanation:

The effect on an organism or population of chemical exposure is called __________.
A)
natural hazard
B)
gene-environment interactions
C)
physiology
D)
dose response
E)
heredity

Answers

Answer: A) natural hazard :)
The answer to this question is a

I’ll mark as BRANLIEST!!

30 POINTS!!

Please help me!!

Answers

Answer:

They are complimentary DNA strands of each other

I remember them via AT (AT-AT from Star Wars and this gets you 2 H bonds) and CG (cross guard light saber, the ridiculous one with the helm of the sword having it's own light saber so it is crossed and has 3 H bonds). Ridiculous makes things more memorable imo.

Explanation:

Haploid sperm and egg are produced via meiosis. What process is responsible fro producing the 2N zygote?
A. Differentiation
B. Fertilization
C. Replication
D. Transcription

Answers

Answer:

Explanation:poda

Answer:

c

Explanation:

Which characteristics are common to most salamanders? Check all that apply.

They undergo internal fertilization.
They lose their tails as adults.
They have wet, moist skin.
They have long, strong legs.
They begin life with gills.

Answers

They undergo internal fertilization and they have wet moist skin.

Answer:

Its C,D,A

Explanation:

:)

This soil sample is the LEAST porous?
True or false

Answers

Answer:

False

Explanation:

Soil with least porosity

Thus, the correct answer is 'Clay soil. '

False

There are other types of soil that can be more crumbly, but this is not the least. Because porous means something is full of tiny holes or openings, you can see that this is the right word to match it with! The least crumbly, or porous would only have a little crack. Good luck, and I hope this helped!

Also....

Clayey soil is the least porous.

Clayey soil is the least porous soil as the spaces between the molecules of the soil is less and water cannot pass through them.

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