how can liquid be drawn into a pipette safely

Answers

Answer 1
Using different types of pipes
Answer 2

Answer:

A. by squeezing and releasing a bulb attached to the wide end of the pipette

Explanation:

A. by squeezing and releasing a bulb attached to the wide end of the pipette


Related Questions

24. If scientists search other planets for possible life, they are likely to focus on the presence of
molecule containing which of the following elements?
A. Iron
B. Carbon
C. Potassium
D. Sodium

Answers

C as we give CO2 to plants and they give us 02

is osmosis passive or active transport

Answers

Answer:

Passive Transport

Explanation:

Osmosis does not require ATP so it is a passive transport. Osmosis is a form of passive transport. Water molecules are small enough to move freely across the plasma membrane without the use of ATP

message me btw : )

Answer: Osmosis is passive transport.

Explanation: Water moves from areas where solutes are less concentrated to areas where they are more concentrated.

In the cell cycle typical cancer cells, mutations have most likely caused
A.uncontrolled growth
B.a halt in cell division
C.a failure in mitosis
D.slower growth

Answers

Answer:

This process is akin to searching for the proverbial needle in a haystack, because many of the mutations present in these cells have little to nothing

Explanation:

During mitosis, normal cells undergo checkpoints that monitor the fidelity of the processes that occur during the cell cycle. Uncontrolled cell growth refers to the breakdown of these regulatory checkpoint mechanisms.

In the cell cycle of typical cancer cells, mutations most like cause UNCONTROLLED GROWTH (Option A).

Apoptosis refers to the programmed cell death that prevents the uncontrolled growth of cancer cells.

In cancer cells, genes that control apoptosis during the cell cycle suffer mutations, thereby leading to uncontrolled cell growth.

In conclusion, in the cell cycle of typical cancer cells, mutations most like cause UNCONTROLLED GROWTH (Option A).

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The football player made 10 yard gain. How many inches is that?
Explain every step

Answers

Answer:

360 inches

Explanation:

there are 36 inches in a yard so do 36 times 10 and you get 360

Question 5
1 pts
A pesticide manufacturer claims that a new product will decrease the pest population by 25% more than the current pesticide. A population of 75
beeties of the same species us exposed to the new pesticide for a 10-week period. A separate population of the same species of beetle is exposed to
the same amount of the current pesticide for a 10-week period. The data collected is sent to an independent research company to verify the results,
Which statement BEST explains how an independent research company verifies data to ensure unbiased results,
The company sends out the data to another researcher to investigate
The company tests many types of pesticides and draws its own conclusions
The company performs the same investigation and compares the results
The company compares the data given to similar investigations

Answers

Answer:the company will perform the same investigation and compare the results to the manufacturers

Explanation:

Just did the quiz

The independent research company performs the same investigation and compares the results.

Scientific experiments must be reproducible. For the results of a scientific experiment to be reliable, other scientists must be able to carry out the same experiment and obtain similar results as reported. This is what it means for results to be reproducible.

Hence, for the independent company to ensure that the results are unbiased, the company performs the same investigation and compares the results.

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Read the sentence.

The tracking party followed their prey to the river, but there they lost the trail, even though they had several bloodhounds with them.

What type of sentence is this?

Answers

Answer:

Run on sentence

Explanation: Too much commas no periods, Much appreciated if Brainliest thanks

Answer:

D: a compound-complex sentence

What is the minimum level of protein structure for an enzyme?

Answers

Answer:

Primary Structure

Explanation:

The simplest level of protein structure, primary structure, is simply the sequence of amino acids in a polypeptide chain.

Pick the list with correct order
"Phylum Class,Order Species"
2
"Kingdom, Class Phylum, Genus"
"Class, Order, Family, Genus"
4
"Class, Family,Order, Genus"

Answers

Jfowofkfowkvkwkvndiwofjvjsowo

During photosynthesis, plants release_____into the air through their leaves.

Answers

Answer:

carbon dioxide is the answer

oxygen

Explanation:

because they do and they always have and they do that so we can

Each chromosome contains thousands of genes. What is a gene?
Select one:
O
A sequence of DNA that provides the structure for holding the nucleus together
A sequence of DNA that regulates the production of ATP in the cell
A sequence of DNA that codes for a specific protein
A sequence of DNA that regulates the replication of the nucleus

Answers

A sequence of DNA that codes for a specific protein
A sequence of dna that codes for a specific protein

2. How did the mass contamination affect wildlife in the area?

Answers

Answer:

Hope this can help

Explanation:

The number of wild animals living on Earth is on track to decline by two-thirds by 2020, according to WWF's Living Planet report, which indicates that the partial extinction of species is destroying the biological sustenance on which the planet depends. humanity. This report, the most comprehensive to date, indicates that animal populations plummeted by 58% between 1970 and 2012 and everything indicates that this loss may reach 67% in 2020.

(this is the translation of the answer above)

The number of wild animals living on Earth is on track to decline by two-thirds by 2020, according to WWF's Living Planet report, which indicates that the partial extinction of species is destroying the biological sustenance on which the planet depends.

What does this report indicates?

This report, the most comprehensive to date, indicates that animal populations plummeted by 58% between 1970 and 2012 and everything indicates that this loss may reach 67% in 2020.

Many villages also grow into urban/semi urban areas. This is a sign of economic growth but with the cost of environmental damage. This damages 3 things - air, water, and land. Due to urbanization, many roads are constructed. It passes through the natural habitats of other wild animals. These roadways split their habitat, and cause a reduction in their number.

The urban sprawl causes set up many factories, the use of vehicles which does air pollution. People are more prone to use vehicles which are responsible for air pollution.

Therefore, The number of wild animals living on Earth is on track to decline by two-thirds by 2020, according to WWF's Living Planet report, which indicates that the partial extinction of species is destroying the biological sustenance on which the planet depends.

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Why can water have no net charge but have slight
charges in different parts of the molecule?

Answers

Water molecule is made up of one atom of oxygen and two atoms of hydrogen. The water is a polar compound and has slight charges due to differences in the charges.

Water molecule is composed of hydrogen and oxygen and is inorganic transparent liquid. The hydrogen and oxygen in a water molecule are linked by covalent bonds.

The oxygen is electronegative and attracts electrons. There is however no overall charge on the water molecule, but atoms of the compound have slight charges.

The unequal sharing of electrons between hydrogen and oxygen can give them slight positive and negative charges, respectively.

Thus, there are slight charges present on oxygen and hydrogen.

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Which wavelength of electromagnetic radiation carries the most energy?
a. infrared
b. FM radio
c. visible light
d. ultraviolet

Answers

Answer:

d. ultraviolet

the answer is ultraviolet

He answer is D ultraviolet

Unicellular organisms can be
Prokaryotes
Ameoba
bacteria
all of the above

Answers

Answer:

all of the above

When magma cools beneath the surface of the earth, it forms
a. granite
b. basalt
c. shale​

Answers

Answer:

When magma cools beneath the Earth's surface, it forms granite.

Explanation:

Basalt is formed at the surface where magma comes in contact with cool air above the Earth's surface, while shale is formed when mud is compressed.  

Which if the following statements is true regarding scientific hypothesis?

Answers

Answer:

A testable hypothesis is valuable, even if evidence shows that it is false

Explanation:

Sorry it took so long hope it helps!!

In science Observation and experimentation correlate with what aspects of critical thinking

Answers

Answer:

The critic thinking

which may be defined by (the ability to verify assumptions, ideas, are they real, or bear part of the truth, or are they unreal) and may be defined as "reasonable contemplative thinking that focuses on what the individual believes or performs." It is an examination and evaluation of the solutions offered in order to make a judgment about the value of the thing

What is heterotrophic nutrition?

Answers

Answer:

Type of nutrition in which organisms depend upon other organisms for food to survive.

Explanation:

Help me, anyone, if you would

Answers

Answer:

C.

Explanation:

A is incorrect because a map isn't usually called a model, unless it was a 3D map of a certain area.

B is incorrect because a brainstorming activity isn't a model. It's considered planning.

D is incorrect because the scientific method is used to hypothesize experiments.

the answer is letter C

plz answer this question ​

Answers

Answer:

The answer in number 3 tubectomy

The answer is number 3 sir

How can the study of biology improve human lives? Give two examples.

Answers

Answer:

the study of biology can improve someone's but them understanding live the word biology comes with the root word live  

Explanation:

It can improve human lives by discovering new diseases and by keeping our body’s more immune

Do flies have white blood cells?

Answers

Answer:Sort of

Explanation:

Insects do have blood -- sort of. It's usually called hemolymph (or haemolymph) and is sharply distinguished from human blood and the blood of most animals that you would be likely to have seen by an absence of red blood cells.Oct

app, ck-12 subject, carbohydrates 9th grade. monosaccharides and disaccharides are also referred to as simple ___?___.​

Answers

Answer:

simple sugars and proteins or lipids

Explanation:

they both have these

BRAINLIEST! Are fish mammals

Answers

Answer:

No

Explanation:

Fishes lay eggs and are not warm blooded vertebrates and don't have hair or fur

Answer:

No fish are not mammals.

Explanation:

There are 75 species of dolphins,whales and other creatures living in the ocean. they are the only mammals.

What type of consumer do you think this coyote is? Can you tell from the photo that the coyote is not an omnivore?

Answers

Answer:

Carnivore.

Explanation:

Based on the picture alone, the coyote is eating meat, which would make it a carnivore.

Cayote is a tertiary consumer.

The photo alone cannot tell us cayote is not an omnivore.

Tertiary consumers are organisms on the fourth trophic level of a food chain. Most tertiary consumers like the cayote are omnivores.

Omnivores feed on both plants and animals. The cayote feeds not only on other animals like ducks, squirrels, fish, grasshoppers, but also feed on young plants and berries form plants.

The photo only shows us a cayote feeding on just one source of its diet which is a smaller animal. It cannot tell us that the cayote is not an omnivore because it doesn't show us the entire food web of the cayote in its ecosystem.

In conclusion, the cayote is a tertiary consumer. You cannot tell the cayote is not an omnivore from the photo.

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Students in a biology class were discussing outbreaks of food-borne illness. Modern practices of refrigeration are aimed at curbing (limiting) these bacteria. They wanted to know exactly what happened to bacterial colony growth at varying temperatures. The teacher explained that scientists study bacteria in the laboratory by counting colonies that grow on plates filled with agar, which is a nutrient substance. “Design” an appropriate experiment that would test the effect of temperature on bacterial growth. You would have a period of 5 days to conduct an experiment.

Answers

Answer:

I know this isn't a big help answer, but you could use it as a start. You could say something like "I tested it in multiple different temps. including .... (any temps. you want) Then say how all of thoose different temps. changed the bacteria." I hope it helped! :)

Explanation:

Most of the foodborne diseases are caused by those bacteria that can grow well and infect food at normal temperatures, and their population can be controlled by lowering the temperature or raising the temperature too high, which can degrade their cell walls.

What is the effect of temperature on the bacteria?

There are numerous bacteria that can infect food and cause foodborne disease when consumed by humans, resulting in diarrhea, stomach aches, and other symptoms. Because most of these bacteria grow at room temperature, keeping food at that temperature degrades it faster, so foods are kept and stored in the refrigerator. This low temperature keeps the cellular activity of bacteria low; as a result, the bacteria cannot produce toxins or grow their population.

Due to this, the refrigerator stores the food for a longer time. Different strains can be kept and stored at different temperatures on an agar plate, but a strain present at a low temperature will produce far fewer colonies than one present at a room temperature. Further the growth depends upon the types of bacteria.

Hence, by refrigerating the food, cellular activity is seized and controlled.

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Which phrase describes foliated rocks?
DO NOT CHECK ALL THAT APPLY

tend to break in half
grains arranged randomly
tend to split apart along bands
grains arranged in increasing size

Answers

Answer:

tend to split apart along bands

Explanation:

Foliated rocks are metamorphic rocks that are formed due to high pressure and heat leads to the layered or banded appearance of the rocks.

Due to the layered or banded appearance of the rocks, foliated rocks tend to split apart along bands  that are aligned parallel to the minerals in the rocks. Example of foliated rocks: Slate, that split into thin sheets along bands .

Hence, the correct answer is "tend to split apart along bands ".

Answer:

tend to split apart along bands

Explanation:

Foliated rocks are metamorphic rocks that are formed due to high pressure and heat leads to the layered or banded appearance of the rocks.

Due to the layered or banded appearance of the rocks, foliated rocks tend to split apart along bands  that are aligned parallel to the minerals in the rocks. Example of foliated rocks: Slate, that split into thin sheets along bands .

Hence, the correct answer is "tend to split apart along bands ".

hope it helps

Which is the central element for all living things?

-carbon
-hydrogen
-oxygen
-nitrogen

Answers

Answer:

carbon

Explanation:

I took the test and got it right.

Answer: carbon

Explanation:

A ______ would be a short-term energy source. (Please Help!) :)

Answers

Answer:

lightbulb?

Explanation:

a lightbulb will run out but can last a while

Embryonic similarities persist for longer between organisms
that have a closer common ancestor.

Answers

Answer:

True

Explanation:

Species which are more closely related have fetuses that look similar.

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