Answer:
[tex]\boxed {\boxed {\sf \rho \approx 2.00 \ g /mL}}[/tex]
Explanation:
The density is the mass per unit volume. It is calculated using the following formula.
[tex]\rho = \frac{m}{v}[/tex]
The mass of the object is 12.59 grams.
The volume was found using water displacement. A known quantity of water was placed in a graduated cylinder (56.7 mL), then the object was added and the water level was recorded again (63.0 mL)The volume of the object is the difference between the initial water volume and the final water volume.
v= final water volume - initial water volume v= 63.0 mL - 56.7 mL v= 6.3 mLNow we know the mass and volume of the object and we can substitute the values into the formula.
[tex]\rho = \frac{12.59 \ g }{6.3 \ mL}[/tex]
Divide.
[tex]\rho = 1.998412698 \ g/mL[/tex]
The original measurements have 4 and 3 significant figures. We always round our answer to the least number of sig figs, which is 3. For the number we found, that is the hundredth place. The 8 in the thousandth place tells us to round the 9 up to a 0 (hundredth place), then the 9 up to a 0 (tenth place), and the 1 up to a 2 (ones place).
[tex]\rho \approx 2.00 \ g/mL[/tex]
The density of the object is approximately 2.00 grams per milliliter.
Select all that apply.
Which conditions relate to the research of van Helmont?
plant mass related only to soil
conclusions partly correct
demonstrated plant food from soil
conducted around 1400 AD.
plant mass related to H 20
Answer:
I'd say the best Answer is A & C
Explanation:
what is the main trend shown in the graph?
Answer:
option A.is the answer.thankyou!!!!In your own words, what is the definition for the word karyotype?
Answer:
Karyotype is defined as the general appearance of chromosomes. An example of karyotype is the size, number and shape of chromosomes in a person's body. noun. The characterization of the chromosomal complement of an individual or a species, including number, form, and size of the chromosomes. noun.
what are physical quantities? Give any two example.
how are various components of the blood adapted to function
Which sentence in the passage points out the similarity between parthenogenesis and sexual reproduction?
Answer:
Parthenogenesis is a type of reproduction that does not require a mate. It’s rarely seen in birds and higher vertebrates. Parthenogenesis involves the formation of a zygote. But this zygote is formed without fertilization. In parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
Explanation:
The sentence in the given passage that points out the similarity between the parthenogenesis and sexual reproduction is “Parthenogenesis involves the formation of a zygote”. It is a form of reproduction in which an ovum is produced without fertilization. Zygote formation us a common process in sexual as well as asexual type of reproduction process. Thus, this is the answer of the question.Name three kinds of prokaryotic cells
Answer:
Euryarchaeota
Crenarchaeota
Nanoarchaeota
Answer:
lactobacillus acidophilus.
Cyanobacteria.
Archaea.
Which cells contain chloroplasts?
1.A virus mutates, and therefore it has which of the following traits of living things?(1 point)
It uses energy
It evolves.
It grows and develops.
It is made of cells.
2.Compare a virus to a unicellular organism.(1 point)
Viruses reproduce through asexual reproduction; unicellular organisms need a host cell.
Neither unicellular organisms nor viruses respond to stimuli.
Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
Viruses need energy; unicellular organisms do not need energy.
3.Summarize the lytic cycle.(1 point)
A virus copies its genetic material and then splits its cell membranes in half to form identical viruses.
A virus lays eggs on the host cell’s protein coat, which then hatch and move on to infect other cells.
The viral DNA incorporates itself with the host cell’s and replicates whenever the host cell replicates itself.
A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
4.Differentiate between the lysogenic and lytic cycles.(1 point)
The host cell copies its own DNA during the lytic cycle.
The host cell is destroyed during the lytic cycle.
The virus injects DNA into the host cell during the lysogenic cycle.
Viral proteins are synthesized during the lysogenic cycle.
5.Infer why doctors recommend people, especially elderly and those with weak immune systems, get the flu vaccine every year.(1 point)
They should get the flu vaccine because viruses mutate.
They should get the flu vaccine because their bodies already have a resistance.
They should get the flu vaccine because viruses do not mutate.
They should get the flu vaccine because their bodies do not build up resistance.
Please i really need help
Answer:
1. It grows and develops
2. Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
3. A virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
4. The host cell is destroyed during the lytic cycle.
5. They should get the flu vaccine because their bodies do not build up resistance.
Explanation:
These are the answers I chose from when i did it 10 minutes ago, they wont let me go back to the quick check to confirm it, but this was the best I could do.
The trait of living things that's depicted by a virus that mutates is that it evolves.
The difference between a virus and a unicellular organism is that Unicellular organisms have a cell membrane made from a lipid bilayer; viruses have a protein coat.
The lytic cycle is when a virus injects its genetic material into the host cell, copies itself, and then forms new viruses that burst out of the host cell.
The difference between the lysogenic cycle and the lytic cycles is that the host cell is destroyed during the lytic cycle.
The reason why doctors recommend people, especially the elderly and those with weak immune systems, get the flu vaccine every year is because they should get the flu vaccine because viruses mutate.
It should be noted that when a virus mutates, it shows its ability to evolve. In such a case, there's transformation and development regarding the virus.
People are advised to get the flu vaccine every year because viruses mutate. In this case, getting the flu vaccine will help protect the person from the virus.
Getting a flu vaccine is vital especially for the people that have a low immune system as well as for the older people who are already weak.
In conclusion, the correct options are B, C, D, B, and A.
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define acceleration. Write its formula and SI unit . pls answer my question!
Answer:
the rate of change of velocity with time is called acceleration.
it can also be defined as the increase in velocity per second.
The S.I. unit of acceleration is meter per second square or ms−2.
formula; a = Δv / Δt
where a is acceleration,
Δv is the change in velocity,
and Δt is the amount of time it took for that change to occur.
what is cell specicliztion ?
Answer:
cell specialization is the process by which a cell changes from one cell type to another.a cell changes into a specific cell meant to perform a specific function within the body.
I hope this helps
Cell specialization, also known as cell differentiation, is the process by which generic cells change into specific cells meant to do certain tasks within the body. ... In adults, stem cells are specialized to replace cells that are worn out in the bone marrow, brain, heart and blood.
Which of the following is not a scale of atmospheric motion?
Metric
Micro
Macro
Meso
Answer:
macro
Explanation:
Answer:
Macro
Explanation:
All the other options are scales of atmospheric motion
What is desertification?
a.
method of using desert land for agriculture
b.
the process of turning arable land into deserts
C.
drying up of stream beds and lakes
d.
the expansion of current deserts land areas
Answer:
B
Explanation:
I believe it's B because desertification is the process of land being turned into deserts due to many factors like animal grazing.
Desertification means the process of turning arable land into deserts, which is the second option. Desertification is a process in which agricultural land is affected the most, resulting in the land having fewer nutrients.
What is desertification?Desertification is a process in which arable land is affected, and as a result, crop production is reduced. Desertification is the result of many factors, such as climate change, rapid urbanization, population growth, global warming, etc. The less water, nutrients, and microbes there are in the soil, the more likely it is that the land will become a desert.
Microbes in the soil become extinct as a result of climate change, causing crop patterns to shift and more land to become desert. Global warming causes temperatures to rise and many species to become extinct, exacerbating the problem.
Hence, desertification means the process of turning arable land into deserts, which is the second option (b).
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Need help someone knows the answer
Answer:
d. landfill materials
Explanation:
If we prіck a plant and an animal cell, which one of them would lose its shape? and what's the reason
Answer:
The animal cell because they have no cell wall. I hope this is right!
Explanation:
What is one reason that vascular plants are larger than nonvascular plants?
a. Vascular plants live in areas where they can get more water than nonvascular plants can.
b. Nonvascular plants cannot live in as many areas as vascular plants, so they stay small.
c. Nonvascular plants do not reproduce as quickly as vascular plants do, so they do not grow as large.
d. Vascular tissue carries water and nutrients much more efficiently than can be carried by diffusion.
Answer: C
Explanation:
Nonvascular plants do not grow that tall.
Define hypothesis
Thx!
Answer:
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
"his ‘steady state’ hypothesis of the origin of the universe"
bộ lưỡng cư không đuôi có đặc điểm cơ bản là
Answer:
thân ngắn,hai chi sau dài hơn 2 chi trước, đa số hoạt động về đêm
what is a abscisic acid
Answer:
a plant hormone which promotes leaf detachment, induces seed and bud dormancy, and inhibits germination.
Abscisic acid (ABA) is a plant hormone. ABA functions in many plant developmental processes, including seed and bud dormancy, the control of organ size and stomatal closure. It is especially important for plants in the response to environmental stresses, including drought, soil salinity, cold tolerance, freezing tolerance, heat stress and heavy metal ion tolerance
Conjugation differs from reproduction because conjugation Group of answer choices transfers DNA horizontally, to nearby cells without those cells undergoing replication. transcribes DNA to RNA. replicates DNA. transfers DNA vertically, to new cells. copies RNA to make DNA.
Answer:
it is differs from reproduction because conjunction group of answers
Conjugation transfers DNA horizontally, to nearby cells without those cells undergoing replication.
Conjugation is a mechanism of genetic transfer in bacteria where genetic material, usually in the form of plasmids, is transferred from one bacterial cell to another. Unlike reproduction, which involves the replication and inheritance of genetic material through cell division, conjugation allows bacteria to transfer genetic material horizontally between cells that are in close proximity to each other.
During conjugation, the donor bacterial cell containing the plasmid makes contact with the recipient cell through a specialized structure called a pilus. The plasmid DNA is then transferred from the donor cell to the recipient cell through this pilus. The transferred DNA can include genes that provide advantages such as antibiotic resistance or the ability to metabolize certain substances.
The key difference between conjugation and reproduction is that conjugation does not involve replication of the recipient cell's entire genome. Instead, it transfers specific genetic material from one cell to another. The recipient cell does not undergo replication as a result of conjugation but acquires new genetic information from the donor cell.
Reproduction, on the other hand, involves the replication and inheritance of the complete set of genetic material in the parent cell. It results in the production of offspring cells that are genetically identical or similar to the parent cell.
In summary, conjugation is a form of genetic transfer in bacteria where DNA is horizontally transferred between cells without those cells undergoing replication. It allows for the exchange of genetic material and the acquisition of new traits by recipient cells. Reproduction, on the other hand, involves the replication and inheritance of genetic material through cell division.
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In the analogy of a cell as a school,
lysosomes could be thought of as...
A. a janitor.
B. a teacher.
C. a music teacher.
Explanation:
In the analogy of a cell as a school, lysosomes could be thought of as a teacher.
Because teacher helps students by solving complex problems in simple way and as teacher lysosomes also helps us by breaking down the complex thing in the cell.
Hey there!
I believe your answer would be the janitor because his/her job is very similiar to the lysosomes' job, to get rid of all extra waste.
Hope this helps!
Have a great day!
A microbiologist is characterizing a newly discovered microorganism that requires an anaerobic environment to live and uses either lactic acid or alcoholic fermentation in its energy metabolism. Which would be a way to determine the type of fermentation the microorganism uses
Answer:
The correct answer is - Analyze whether one molecule of CO2 is released for every one molecule of glucose fermented
Explanation:
Fermentation can be described as the process that breaks down the glucose-like molecules in absence of oxygen or anaerobically. There are different types of fermentation depending on the items they produce in used those products. The three types of fermentation are Lactic acid fermentation, alcoholic fermentation, and acetic acid fermentation.
One can determine the type of fermentation by analyzing the products they produced and the amount of carbon dioxide they produce for every one molecule of glucose fermented as lactic acid fermentation do not produce carbon dioxide whereas alcoholic fermentation produces two moles of CO2 per mole of glucose.
340 million square meters of forest is how many hectares?
one hectare = 10000 square miles
use dimensional analysis
PLS HELP LOL
Which ocean borders the western coast of South America
Answer:
Pacific Ocean
Explanation:
here is your answer
Single-celled organisms with cell walls do not have contractile vacuoles. Suggest why.
what is homostatis in biology
Answer:
Homeostasis, from the Greek words for "same" and "steady," refers to any process that living things use to actively maintain fairly stable conditions necessary for survival. The term was coined in 1930 by the physician Walter Cannon.
Explanation:
Which of the following is a central idea of cell theory?
O Molecules are made out of two or more cells joined together.
O Cells join together when they reproduce.
O Cells come from preexisting cells.
O Atoms are the basic unit of function in living things.
Answer:
[tex]cells \: come \: from \: pre \: exixting \: cell \\ thank \: you[/tex]
Describe the process of germination and plant growth you observed in the lab activity for a monocot plant.
Answer:
Germination is the process by which a plant develops from a seed. The most common example of germination is a sprout of a seedling emerging from the seed of an angiosperm or gymnosperm. However, the development of a daughter spore from a spore, such as the growth of a mycelium from a fungal spore, is also germination. Therefore, germination can be understood in the general sense as anything that becomes larger from a small entity or a living organism, is a commonly used method in many seed development projects. alike.
Explanation:
What kind of frog\toad is this?
Giving brainliest to the first one who knows
Answer:
I'm having trouble seeing the picture
Answer:
it looks like an american toad or wood frog
how do scientists test their hypothesis
a. stating a problem
b. conducting experiments
c. communicating results
d. stating a conclusion
Answer:
B
Explanation:
Answer:
B.
Explanation:
They conduct multiple experiments to test their theories and hypothesis, and if it comes out wrong, or different, they keep conducting experiments to find the correct answer or solution
