A class prepares for an onion cell lab in which a thin layer of onion skin is examined under
the microscope. Which of the following is NOT a safety precaution that students should follow
during the lab? A A pair of chemical splash goggles should be worn during the investigation.
B A hot mitt should be worn to adjust light on the microscope
C A pair of gloves should be worn when handling samples.
D A lab apron should be worn to protect clothing.

Answers

Answer 1

Answer: b

Explanation: all the others are safety precautions, this is not. It’s a good idea, but not necessary to do.


Related Questions

one similarity between chlorophyll a and chlorophyll b

Answers

Answer:

Both are involved in the process of photosynthesis. The main difference between chlorophyll A and B is their role in photosynthesis; chlorophyll A is the principal pigment involved in the photosynthesis whereas chlorophyll B is the accessory pigment, collecting the energy in order to pass into chlorophyll A

If an organism is composed of only one cell, it ____. Fill in the blank.
A: Performs all the functions
B: Is specialized
C: Does not have any function
D: It cannot survive on its own.

Answers

Answer:

A.

Explanation:

Describe three examples of how metrology can improve the safety of automobiles

Answers

Answer: They can stop letting smoke come out from the back. Limit Their Driving. Throw away all the old used cars.

Explanation:


In a hypothetical example, an earthquake generated tidal wave destroys
all habitable land one mile in from the coast. All animals within one mile of
the seashore are killed during the event. Is this an example of natural
selection that will result in adaptation, or not? And why?

Answers

i don’t think it’s considered natural selection because it’s a major dramatic event that more than likely killed everything in its way. i don’t think it will result in adaptation

Which of the following is an example of a pioneer species?
a. fungus
b. trees
c. shrubs
d. grass

Answers

Answer:

fungi

Explanation:

The grass is an example of pioneer species. Therefore, the correct statement is option D.

What is pioneer species?

Pioneer species involve the organisms that are first to colonize a newly formed or well-disturbed ecosystem. These species can grow in harsh environments, such as abandoned fields, or rocks.

Grasses are the pioneer species that can easily grow in harsh environments and establish and grow themselves in soils that contain poor nutrients. However, the growth of grasses in the soil enriches the soil with organic matter and makes the soil nutrient rich making it a suitable environment for other plants to grow.

When the grasses growing in the area makes the soil nutrient-rich, other plants such as shrubs and trees also begin to grow in that area, and with time, they replace the grasses as the dominant plant species.

Therefore, the grass is an example of a pioneer species.

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Did
you have any leftover atoms after creating the
oxygen and the glucose?

Answers

No, because they were all used to create oxygen and glucose.

After creating the oxygen and the glucose in the process of photosynthesis, there are no atoms left, and the products of the photosynthesis are used for different purposes, such as cellular metabolism and respiration.

What is the importance of the product of photosynthesis?

Photosynthesis is a process in which the product is glucose, which is made up of carbon, hydrogen, and the oxygen atom, and the oxygen gas that is released to the environment. Water, which is composed of hydrogen and oxygen, and carbon dioxide, which is composed of carbon and oxygen, are the reactants in this process and make the glucose in the presence of sunlight; further, these are used by animals and plants.

Hence, after creating the oxygen and the glucose in the process of photosynthesis, there are no atoms left, and the products of the photosynthesis are used for different purposes, such as cellular metabolism and respiration.

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In a water compound, what kind of charge does oxygen have?

Answers

Answer:

Positive

Explanation:

Based on The endosymbiotic theory, what cell would result from the endosymbiosis of a cell with a cyanbacterium?

A. A eukaryotic cell that can make its own food

B. A prokaryotic cell that can make its own food

C. An aerobic bacterium

D. An anaerobic bacterium

Answers

It’s A - eukaryotic cell that can make its own food

Answer:

a i think

Explanation:

Drag the tiles to the boxes to form correct pairs.
Match the factors with the way in which they can affect a local climate.

Answers

Answer:

Latitude- Johannesburg, South Africa, has higher average annual temperatures than Dublin, Ireland.

Ground cover- City officials use a mixture of crushed gravel and limestone instead of blacktop for the new bike trail.

Topography- The leeward side of a mountain receives far less rainfall than the windward side.

Bodies of water- At night, a coastal community enjoys milder temperature than its sister city farther inland.

Elevation- Air molecules are more loosely packed near a mountain peak than they are near the mountain's base.

Explanation:

Answer: right on plato

Explanation:

Explain a time you would need to evaluate something in science.

Answers

Answer:

To study if the reuse of industrial treated wastewater may adversely affect life in a river basin system

Explanation:

The process of evaluation in science enables us to understand a given phenomenon from the natural world. Scientists have a standardized-objective method to investigate how the natural world works. This scientific method consists of the following steps: 1- to observe a given phenomenon form the real world, 2- to ask one or more questions about this phenomenon, 3- to raise a working hypothesis in order to explain these questions, 4-to test the hypothesis by experimental and/or observational procedures, 5- to obtain the results and conclusions. In this case, the scientific method can help to understand the effects of the industrial treated water in the life of the river system, and these results could be used as a starting point to predict its effects on other aquatic ecosystems.

PLEASE HELP!!! What does the graph indicate about the relative acidity of the stomach and small intestine??

Answers

Answer:

That the stomach is more acidic than the small intestine.

Explanation:

If i understand the graph correctly, the graph indicates that the stomach is relatively more acidic than the small intestine. This Is because the data for the stomach (the blue line) is at the left side of the x-axis, from 1 to 5, while the data for the small intestine (the orange line) is more to the right, meaning that the small intestine has a higher pH. The higher the pH, the lower the acidity. So since the stomach has a lower pH, it has a higher acidity.

The stomach is more acidic than the small intestine.

The graph hows the pH of the small intestine and the stomach respectively. We know that the pH is a measure of the acidity or alkalinity of a substance. A pH value of 0 - 6.9 indicates acidity. 7 indicates a neutral substance while 8 - 14 indicates a basic substance.

We can see from the graph that the stomach is more acidic than the small intestine because it has a lower pH which indicates high acidity.

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How does a rock change into a metamorphic rock?

A. evaporation
B. cementation and compaction
C. heat and pressure
D. cooling of magma

Answers

Answer: C

Explanation:

Any rock (igneous, sedimentary, or metamorphic) can become a metamorphic rock. If rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed, starting the rock cycle all over again.

Answer:

C

Explanation: The heat and pressure changes the rock into a different type of rock such as igneaous, metamorphic,  and sedimentary.

 

Describe the two phenomena (sub-problems) that caused the contamination of Cleveland
drinking water.

Answers

Answer:

So you can give the other person brainliest

Explanation:

in which of the following cells would meiosis occur?

Answers

Answer: Reproductive Cells

Explanation:

Diploid or Reproductive cells.

A young child becomes very sick and his doctor does a series of tests to try to figure out what is causing his illness. His tests show that the child has generalized muscle weakness in many muscles all over his body, cellular damage to his nervous system, and heart irregularities. Because the doctor knows that these organ groups (the brain, the heart, and the muscles) are especially sensitive to cellular energy levels, he believes he has found the answer.

Answers

Answer:

Nucleus due to being the control center it might not function correctly due to the fact that  

it is the control center and the brain is as well...

Explanation:

Nucleus due to being the control center it might not function correctly due to the fact that  it is the control center and the brain.

What is the function nucleus in cell ?

The nucleus in eukaryotes are present at the central part of the cell, is the major functional organelle which store a cell’s genetic contents and it helps in cell growth, their function.

It plays an important role in reproduction, prokaryotic cell does not contain nucleus, it is also known as the  “brain” of the cell and it control the growth and reproduction, largest and prominent organelle in the cell.

Eukaryotic cell have a single nucleus and have more than one nucleus;  red blood cells don’t have a nucleus while muscle cells have multiple nuclei.

The organelle Nucleus have different components like Nuclear Envelope, Nuclear Pores, Nucleoplasm, Chromatin, Nucleolus.

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What would happen if cells did not specialize

Answers

Multicultural organisms need different types of cells to carry out life functions so if they didn’t specialize cells wouldn’t have different types and won’t be able to carry out different functions

Answer:

I do not know at all,....,.........

.

...

............

The negative impacts of nonnative species generally outweigh the positive impacts. Please select the best answer from the choices provided О T O F ​

Answers

Answer:

true

Explanation

The negative impacts of nonnative species generally outweigh the positive impacts. Thus, the given statement is true.

What are non-native species?

An alien or non-native species is the species which has been intentionally or accidentally transported and released into an environment which is outside of its historic or resident geographical range or habitat. The species is introduced into a new habitat. Such species are known as invasive species, if they are ecologically and economically harmful to the environment.

It has been found that the negative impacts of non-native species generally outweighs the positive impacts. This is because, these species disturb the ecosystem of the new environment in which it is introduced. Disturbance in the ecosystem is caused due to disturbance in the food chain.

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By which process does water vapor become a cloud?
evaporation
transpiration
condensation
precipitation

Answers

Transpiration or condensation, in not sure which.

Answer:

The answer is C.) condensation

Explanation:

Coral reefs are actually colonies of small polyps that each live within a hollow cylinder of calcium carbonate, which it excretes. Their tentacles extend above the top of this cylinder and sweep in small organisms and other food scraps. On the outside of the hollow cylinders single-celled green algae live. These algae use the carbon dioxide and nitrogen wastes given off by the corals to produce sugars and oxygen through the process of photosynthesis. The sugar and oxygen are then used by the coral for growth. In addition, the algae are protected by the structure of the reef from animals that might eat them.

a.) Mutualism
b.) Commensalism
c.) Parasitism
d.) Predator-Prey

Answers

A
















Ok thanks for getting me up on my way to the store now you bye love you love love you guys love love you bye love bye ok

what products of photosynthesis do
humans/animals use?

Answers

Answer:

Both!

Explanation:

Glucose is a version of sugar, which we eat in food to get energy for ourselves!

And Oxygen, you need that for respiration so that it can combine with the glucose, so that you can, well, live

What is shown in the image? (please don't guess. I really need help)

prokaryote
eukaryote
chloroplast
mitochondrion

Answers

Answer:

A prokaryote

Explanation:

Answer: prokaryote

hope helps

After photosynthesis, plants store their energy as
a)chlorophyll
b)pigment
c)glucose (sugar)
d)oxygen

Answers

C is the correct answer

Answer:

C

Explanation:

energy stored as sugar within chloroplasts -- the energy factories found in plant cells.

PLZ HELP FAST! ILL GIVE BRAINIEST!!

What have we learned from fossil evidence about evolution?
A. It is an abrupt change.
B. The process is observable.
C. It takes place during one lifetime only.
D. The most complex traits are always selected.

Answers

I think B is your answer.. I hope this helps HAVE A GREAT DAY!!!

Answer:

The answer would be B

Question 6 of 10 What factor causes the shape of saturated and unsaturated fatty acids to differ? A. number of carbon atoms in the carbon chain B. The number between atoms C. Number of single covalent carbon atoms D. Number of each oxygen atoms attached to each carbon atom

Answers

Answer:

C. Number of single covalent carbon atoms

Explanation:

Which cell structure would you find in a bacteria?


A
nucleus

B
mitochondria

C
ribosome

D
chloroplast

Answers

Answer:

nucleus

Explanation: Every single sell must have a nucleus so nucleus is the correct answer.

Ribosome is the cell structure would you find in a bacteria.

Ribosomes are the cellular structures where proteins are synthesized and found in the bacterial cytoplasm.

The cytoplasm is the part of the cell that is within the cytoplasmic membrane and is composed of nutrients, waste, and gases and contains cellular structures such as ribosomes, chromosomes and plasmids.

Bacterial ribosomes consist of two subunits with sedimentation constants of 30 S and 50 S respectively.

The ribosome is active when its two subunits are associated, and the concentration of Mg ++ is of great importance in their association and dissociation process.

In the bacterial cytoplasm there is a clear spatial and functional separation between the central zone.

The nucleoid is located and in which transcription occurs, with respect to the peripheral zone rich in ribosomes, in which protein synthesis occurs.

Therefore, we can conclude that ribosome is the cell structure would you find in a bacteria.

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Which statement correctly compares living things and nonliving things? A. Only living things are made of cells. B. Only nonliving things are made of cells. C. All living and all nonliving things are made of cells. D. All living and some nonliving things are made of cells.

Answers

Answer:

A. Only living things are made of cells

Explanation:

Non-living things do not have cells, and in order for something to be considered living, it must contain cells.

Answer:

Living Things

Explanation:

A mover lifts a 12-kg box straight up 1.5 m. How much work is done on the box?

Answers

Answer:

work done=Force * distance

work done=(12*10)*1.5

work done=120*1.5

working=180j

what ae the functions of the temporal lobe

Answers

Explanation:

The function of the temporal lobe centers around auditory stimuli, memory, and emotion. The temporal lobe contains the primary auditory complex

GREETINGS!

Temporal lobe is function is auditory perception i.e. hearing also it is concerned with speaking and memory processing because it has hippocampus  


Considering how the body is organized, give one reason why it is so difficult for scientists to build a heart.

A) The heart is a pump made of muscle and that is difficult to grow in the lab.
B) Even if researchers build a heart, there is no guarantee that a person's body will accept it.
C) Human hearts are not like any other animal hearts so there is not source for cells and tissues.
D) The heart is made up of many different types of cells that are organized into different tissues.

Answers

Answer:

I am not sure but I think its A

Explanation:

Which has three times as many O atoms than N atoms?

Answers

The Answer is B because if we just look at the moles of nitrogen and oxygen they are in the ratio of 1:2. Since there are 3 moles with it, Even if we when we multiply this ratio by 3 the answer will be 3:6  and 6 is the double of 3 so B is the answer

HOPE IT HELPS!

Answer:

b

Explanation:

Other Questions
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