Answer:
Each objective lens has a different magnification. Multiply the magnification of the eyepiece by the magnification of the objective lens to produce total magnification. For example, a 10X ocular lens and a 40X objective lens will produce a total magnification of 400X (10 x 40 = 400).
6. Why is water useful to cells?
Shahzadi is looking at a cell with an electron microscope. She estimates that the cell is 2 x 10-5 metres long. What is this number fully written
out?
The length of the cell when the number is fully written is twenty millionth meters long.
Given that the length of the cell is 2 x 10⁻⁵ meters long.
1 millionth = 0.000001 = 10⁻⁶
The length of the cell = 2 x 10⁻⁵ meters = 20 * 10⁻⁶ meters
Therefore the length of the cell when the number is fully written is twenty millionth meters long.
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Cells have genes that affect cell division. These genes may be damaged by
environmental factors such as radiation, smoking, and viral infections. Oncogenes
stimulate rapid cell division and are normally turned off in adult organisms. Tumor
suppressor genes prevent continuous cell division and are normally turned on in
adult organisms. One of these tumor suppressor genes, called p53, can be turned off
by the effects of smoking tobacco. Based on the above information, what is the most likely result of turning off p53?
A Lungs become black from smoking
B Cells undergo uncontrolled division
C White blood cells are unable to stop infections
D. DNA chains are broken and form more chromosomes
Answer:
B.
Explanation:
A tumor is essentially when damaged cells continue multiplying. So by smoking your risking both damaging your cells and turning of the p53 gene.
can i have brainliest?
The most likely result of turning off p53 is cells undergo uncontrolled division. Hence option B is correct.
What are genes?Genes are defined as the fundamental genetic component transferred from parent to child. Genes are composed of DNA sequences and are organized sequentially at specified sites on chromosomes in the cell nucleus. The foundation of the body is made up of cells. Your body is made up of billions of interconnected cells in every part. Chromosomes are the units on which genes are organized.
Diseases like cancer can result from an alteration in the cell cycle's regular regulation. When the cell cycle is out of balance, cells have the potential to randomly divide and accumulate genetic errors that can cause a malignant tumor.
Thus, the most likely result of turning off p53 is cells undergo uncontrolled division. Hence option B is correct.
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A cell and it's environment have the same amount of dissolved solute. Both solutions are hypertonic
True
False
Notice the progression of the green and blue dots over time. What statements below describe what is happening
Answer:
The blue and green molecules are small and polar and can diffuse through the lipid bilayer
Explanation:
The plasma membrane is made up of a double layer of phospholipids. This arrangement permits the movement of small polar molecules by diffusion. However, larger molecules or ions need to pass through membrane channels or be carried over by active transport.
How does the word mutualism relate to the world we live in? (biology)
Penny writes a word equation to describe photosynthesis. Which of the following is correct?
A Carbon dioxide and water combine and produce sugar and oxygen.
Nitrogen and carbon dioxide combine and produce oxygen and sugar.
Oxygen and sugar combine and produce nitrogen and carbon dioxide.
Sugar and oxygen combine and produce carbon dioxide and water.
Carbon dioxide + water -> glucose and oxygen
So, the answer would he 'A carbon dioxide and water combine and produce sugar and oxygen'.
Hope this helps! :)
Use the image to complete the statements.
The aluminum atom
electrons to form an ion.
The ion that is formed is
Aluminum atom
Aluminum ion
Answer:
Loses
Positive
Explanation:did it on edge
Answer:
loses, and positive.
Explanation:
Discribe the structure of paramecium
Answer:
they are single celled protist, most commonly found in aquatic habitats.Certain paramecia are also easily cultured in labs and serve as useful model organisms.they are usually oblong or round.
Explanation:
what is the G1 phase of mitosis and what happens during this phase?
actually environmental science own words please need it now.
Answer:
G1 is an intermediate phase occupying the time between the end of cell division in mitosis and the beginning of DNA replication during S phase. In G1, cells accomplish most of their growth; they get bigger in size and make proteins and organelles needed for normal functions of DNA synthesis. Here, proteins and RNAs are synthesized, and, more especially the centromere and the other components of the centrosomes are made.
Explanation:
Which of the following is a characteristic of science
Answer:
science tries to understand what we can see and give a reason for it
Explanation:
loria’s doctor diagnoses her with hepatitis B, which is a viral infection. Which body system will fight this infection?
A.
respiratory
B.
integumentary
C.
immune
D.
digestive
E.
circulatory
Answer:cccc
Explanation:
2. The phosphorus cycle is not
O atmospheric
O slow
O necessary
Which of the following is the best example of an open system?
A. a vacuum bottle
B.An Anthill
C. A sealed Box
D.The moon
Answer:
B.) An anthill
Explanation:
trust me
13. A discount retail store gives a 8% discount
to senior citizens. If a customer who is a senior
citizen wants to purchase an item that costs
$34.50, what is the final cost after the discount
is applied?
Answer:$31.74
Explanation:
Particles made up of proteins, nucleic acids, and sometimes lipids that can reproduce onlyby infecting living cells are called what
What is the scientific name for a polar bear
Answer:Ursus maritimus
Explanation:
the scientific name for a polar bear is called Ursus maritimus
Answer:
Ursus arctos
Explanation:
Which position has the longest amount of daylight in the southern hemisphere?
Answer:
I dont know I think d or b
dont take this answer seriously
The Fluid that surrounds the organelles is....
chloroplast
vaculoe
cytoplasm
cell wall
How many kilometers are equal to 1 light year
Answer:
9.461e+12
Explanation:
Answer:
i think 9.461e+12
how come human populations differ from other animal populations
Answer:
Animal species come in many shapes and sizes, as do the individuals and populations that make up each species. To us, humans might seem to show particularly high levels of morphological variation, but perhaps this perception is simply based on enhanced recognition of individual conspecifics relative to individual heterospecifics. We here more objectively ask how humans compare to other animals ...
Explanation:
With in population, humans show low levels body height variation in comparison to variation observed in other animal population.
Similarly, human population does not show distinctive levels of body mass variation.
What are the importance of studying human population?The study of population helps us to understand the process that influence the size, growth, characteristics, and distribution.
Population studies highlight these problems for society, administrators, political System, economic Planning
The most important terminology which is immensely studied called demography where the study of human population is extremely essential to determine the age, composition.
It is essential to study in every country by analyzing patterns of life expectancy and accurately predict the future.
Demography is important to study, as it characterize the nature population changes over time, such as the aging population
Hence, humans population show low levels body height variation in comparison to variation observed in other animal population.
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Which type of mutation adds one or more base pairs?
Answer:
Insertions
Explanation:
Because they are mutations that use extra base pairs and insert them into a new place for the DNA, when a section of DNA is lost, A insertion fills it in.
Dead zones are low-oxygen areas that develop on the seafloor. Scientists hypothesize that phytoplankton blooms cause these dead zones. Phytoplankton blooms occur when excess nutrients are introduced by pollution from fertilizers, sewage plants, and the burning of fossil fuels. Which of the following would most likely cause an increase in these contributors to dead zones?
Answer:
Rainfall patterns that increase freshwater runoff from terrestrial ecosystems.
15. Why is an enzyme's shape important for the process of a chemical reaction:
Answer:
Why is shape important? The shape of an enzyme is very important because it has a direct effect on how it catalyzes a reaction. An enzyme's shape is determined by the sequence of amino acids in its structure, and the bonds which form between the atoms of those molecules.
A student performs an experiment to study the transport of water in and out of cells. He uses clear, semi-permeable plastic bags to represent the cell membrane. The student places three plastic bags of the same size, each containing a 1% concentration sucrose solution, into three different beakers. One beaker contains distilled water, another beaker contains a 3% concentration sucrose solution, and the third beaker contains a 1% concentratIon sucrose solution. The diagram shows the students experimental setup, the plastic bag before it is placed in the beakers, and the appearance of the bags after an hour in each solution. Which statement provides a conclusion about the transport of water in and out of cells based on the results of the students experiment?
Answer:
B
Explanation:
A. Water moves freely both inside and outside the cell independent of the solute concentration.
B. Water movement into the cell is dependent on the percent concentration of solutes both inside and outside the cell.
C. Water transports solutes out of the cell to balance the percent concentration of solutes both inside and outside the cell.
D. Water moves into the cell solutes move out of the cell to ensure their concentration is balanced both inside and outside the cell.
The correct statement that provides a conclusion about the transport of water in and out of the cells is that water movement into the cell is dependent on the percent concentration of solutes both inside and outside the cell.
Water molecules will always move from the region of higher water potential to the region of lower water potential. The more the solute concentration of a solution, the lower the water potential compared to a solution with a lower solute concentration.
Hence, water will move from the beaker containing distilled water into the plastic bag containing a 1% sucrose solution until an equilibrium is established - the solution in the beaker is hypotonic to the one in the bag.
On the contrary, water will move from the bag containing 1% sucrose solution into the beaker containing 3% sucrose solution until there is no longer any net movement of water - the solution in the beaker is hypertonic to the one in the bag.
There will not be any movement of water from the bag to the beaker containing 1% sucrose because both solutions are of the same concentration, that is, isotonic.
The correct option is B
Pests that do not die as a result of chemical pesticide treatment will develop a resistance to the pesticide.
False
True
Answer:True
Explanation:
I had the same question
Answer: The correct answer is True
Explanation: This statement has been confirmed as correct.
Robinson illustrates how she and her team are using corals to learn more about the ocean’s composition long ago. Briefly summarize what Robinson details about ancient ocean feedbacks.
Answer:
Robinson explains how she uses layers in fossilized corals to understand what the environment was like overtime. By finding out what mainly makes up each layer and finding out roughly how old each layer is, she can begin to understand what the chemical composition and climate was like when the coral pieces were alive
_CH, + __ 02 → _ CO2 +.
H2O
Answer:
combustion reaction
How many total atoms are in this
compound: H2C304N5?
A. 5
B. 19
C. 15
D. 14
what would happen if a cell were unable to make mRNA what is the importance of DNA replication occurring without any mistakes
Answer:
It would just be transmitted to DNA
Explanation: