Answer:
D
Explanation:
The nucleus is what stores a lot of "data" so to speak or genetic material due to being the command post of the cell.
The statement best describes the nucleus of a cell is the nucleus has a membrane that allows for the active transport of RNA and proteins. The correct option is A.
What is a nucleus?The nucleus is a spherical-shaped organelle present inside the cell. It is the head of the cell because all processes of the nucleus are managed by the nucleus.
The genetic material of the organism is present within the nucleus, and DNA replication and other synthesis process occur inside the nucleus because DNA cannot come out of the nucleus.
RNA and proteins go inside the nucleus and carry the information of the DNA outside the nucleus to complete the process so replication.
Thus, the correct option is A. The nucleus has a membrane that allows for the active transport of RNA and proteins.
To learn more about the nucleus, refer to the below link:
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Which graph represents selection that may lead to reduced variation in a population?
Answer:
c
Explanation:
i looked it up and i also took the quiz
Answer:
It is Graph C
Explanation:
I just took the test.
Which describes most woody stems?
green
rough
flexible
smooth
How does llfe depend on the sun
Answer:
Photosynthesis: Oxygen and Food Another way energy is harvested by the sun is in the form of photosynthesis. This process is done by plants and other autotrophic organisms and is essential for all life on Earth. Photosynthesis involves sunlight being converted into glucose, a by-product of which is oxygen.
Explanation:
explain how blood flow in the skin helps to maintain a constant body temperature in very hot conditions.
Answer:
The skin immense blood supply helps regulate temperature
Explanation:
The skin immense blood supply helps regulate temperature
How is the opening and closing of stomata controlled? Besides water, describe two other factors that might influence a plant's regulation
of stomata opening and closing.
es 01)
Type your answer below:
Answer:
Stomata open or close depending on the urgency of the occlusive cells that form it. If they swell because they receive water from the adjacent cells, the stoma opens, as its cell walls buckle, with which gases enter or leave through the ostiole. If on the contrary, the adjacent cells absorb the water from the occlusives and these, ultimately, lose water, they become flaccid and the stoma closes, allowing neither the exit nor the entry of gases. Other factors that influence the regulation of stomatal opening and closing are the circadian rhythm (day / night) and the concentration of CO2.
Explanation:
A stoma is basically a pore that is used for gas exchange with the environment and the transpiration of the plant. It is surrounded by two cells, called occlusive or guard cells, these have chloroplasts and have a thickening on their adjacent surfaces. Stomatal movements depend on changes in the turgor pressure of the occlusive cells and adjacent epidermal cells. Stomata open when water diffuses through osmosis into the occlusive cells from the surrounding epidermal cells. As the turgor pressure increases in the stomatal cells, it induces them to swell and the stomata open. In contrast, when the turgor pressure decreases, the occlusive cells become flaccid and the thickened walls come together, closing the pore. Other factors that influence the regulation of stomatal opening and closing are the circadian rhythm (day / night) and the concentration of CO2. Guard cells regulate the opening of stomata by integrating different signals, both endogenous and exogenous (environmental).Stomatal opening occurs when the concentration of CO2 in the occlusive cell decreases as a result of photosynthesis, while it closes when this concentration increases, even in the presence of light. The plants implement a temporary regulation of the stomata to limit water losses during the CO2 absorption process, that is, the stomata are opened during the day and closed at night to prevent unnecessary water losses, since during this period, photosynthesis does not occur and there is no demand for CO2. With the first rays of sunlight, the plant again begins to photosynthesize, again the stomata open since the demand for CO2 is high. The stomatal opening favors the transpiration of the plant.
Some steps involved in DNA replication and protein synthesis are summarized in the table below.
Step A
DNA is copied, and each new cell gets a full copy.
Step B Information is copied from DNA into mRNA which leaves the nucleus.
Step C
Proteins are assembled at the ribosomes.
Step D
Proteins fold and begin functioning.
In which step would a mutation lead directly to the formation of an altered gene?
A
Step A
B
Step B
C
Step C
D
Step D
Answer: In the nucleus, DNA is complexed with proteins to form a fine filamentous material ... so it can give complete and identical copies of all of its genes to each daughter cell. ... The process of reading an mRNA molecule and synthesizing the protein ... DNA guides the folding of a new protein after it has been assembled by RNA.
Explanation:Transcription Process during which a DNA sequence of a gene is copied to make an RNA molecule
Translation Process during which an mRNA molecule is used to assemble amino acids into polypeptide chains
Mutation A change in a genetic sequence
In a food chain including plants, goats and human, which will be most affected by biomagnification?
Explanation:
animals near the top of the food chain are most affected because of a process called biomagnification.
Answer:
human
Explanation:
the human because the concentration of the toxins increases in the higher levels of the food chain
How does the Red-tailed black shark avoid predators?
Please help!! Quick
Match the following. Match the items in the left column to the items in the right column
Answer:
1. delta > transport and deposition of weathered rock.
2. deposition > triangular deposition of fine, fertile soil at the mouth of a river.
3. erosion > placement of weathered rock and sediment by erosion.
4. medium > substance which enables the transport of weathered rock and sediment.
any two function of photoreceptor cell
Answer:
The function of the photoreceptor cell is to convert the light energy of the photon into a form of energy communicable to the nervous system and readily usable to the organism: This conversion is called signal transduction.
There are two types of photoreceptors in the human retina, rods and cones. Rods are responsible for vision at low light levels (scotopic vision). ... Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity.
I hope this helps in some way :)
a teacher wants to find out what type of marker lasts the longest.Which is the dependent variable and which is the independent variable
Locations other than the North and South Poles move in a circle around Earth’s axis as Earth rotates. Because of this motion, Foucault’s pendulum does not complete a full circle in one day. For example, it only turns 270 degrees in one day in Paris. How many hours would it take to complete one full circle (360 degrees) in Paris? Show your work.
A. 11
B. 18
C. 27
D. 32
Answer:
D..32 hours
Explanation:
Paris, 48 degrees 51 minutes north, a full precession cycle takes just under 32 hours, so after one sidereal day, when the Earth is back in the same orientation as one sidereal day before, the oscillation plane has turned by just over 270 degrees.
Which of these organisms are most helpful in
preventing Earth from being covered with the
bodies of dead organisms?
A herbivores
B producers
C parasites and viruses
D fungi and bacteria
Ов
Ос
OD
Answer:
D. Fungi and bacteria
Fungi and bacteria are most helpful in preventing Earth from being covered with the bodies of dead organisms. So, the correct option is D.
What are Decomposers?Decomposers are defined as organisms that break down dead or decaying organisms that undergo decomposition, a process possible only by certain kingdoms such as fungi and bacteria.
These decomposers recycle and convert the dead matter into humus which mixes with forest soil and provides necessary nutrients to plants. Some examples of decomposers are fungi, bacteria and detritivores, invertebrates, such as earthworms and termites.
Thus, Fungi and bacteria are most helpful in preventing Earth from being covered with the bodies of dead organisms. So, the correct option is D.
Learn more about Decomposers, here:
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What is the point of inserting needles into incorrect places?
A.
it controls for whether the insertion point influences the specific body part
B. O it controls for whether the scientist knows which patient gets the treatment
c. O it controls for whether the person can feel the needle
D.O it controls for whether needles are necessary
Answer:
Explanation:
D
what is dialysis? and explain the process and advantages.
Answer:
Dialysis is a treatment that filters and purifies the blood using a machine. This helps keep your fluids and electrolytes in balance when the kidneys can't do their job. Dialysis has been used since the 1940s to treat people with kidney problems.
When crushing strawberries in a ziplock bag, what cell organelle are you breaking down?
Answer:
When you crush strawberries in a ziplock bag you break down what is called cell walls.
Stars begin their lives as clouds of dust and gas called:
The answer to your question is Nebula.
Answer:
These clouds are called nebulae. A typical nebula is many light-years across and contains enough mass to make several thousand stars the size of our sun.
Meiosis does PMAT twice! That means there is a prophase I and a prophase II. There is a metaphase I and a metaphase II. Etc… If the cartoon below has chromosomes in the middle of the cell, how would you know whether it was in metaphase I or metaphase II?
One can detect if the cell is in metaphase I or II as follows:
If there is homologous chromosomes (metaphase I) or duplicated chromosomes/sister chromatids (metaphase II) in the middle of the cell.
MEIOSIS:Meiosis involves two series of nuclear divisions grouped into meiosis I and meiosis II. Each division has the same number of stages i.e prophase, metaphase, anaphase, telophase etc.Meiosis I involves the separation of homologous chromosomes i.e similar but non-identical chromosomes from each parent. On the other hand, meiosis II involves the separation of sister chromatids (duplicated chromosome). Since metaphase is generally characterized by the alignment of chromosome at the middle of the cell, it means that the difference between metaphase in meiosis I and II will be whether it is homologous chromosomes that are in the middle or sister chromatids.Therefore, according to this question, one would know if the cartoon is in metaphase I or II if:
- there are homologous chromosomes in the middle of the cell (metaphase I)
- there are sister chromatids in the middle of the cell (metaphase II).
Learn more about meiosis at: https://brainly.com/question/7002092
What is noise pollution?
Noise that is not heard
Extra noise we hear
Noise from a tea kettle
Noise that only animals can hear
Answer:
Extra noise we hear
Explanation:
noise pollution is extra noise in a environment or habitat that can also disrupt wildlife
Answer:
The answer is
B. Extra noise we hear
Explanation:
A student looks through an eyepiece which magnifies by 10x and on objective lens 4x. What is the total magnification?
science pls help........
Answer:ansitec
Explanation:
I need help with cell types gizmo
Explore a wide variety of cells, from bacteria to human neurons, using a compound light microscope. Select a sample to study, then focus on the sample using the coarse and fine focus controls of the microscope. Compare the structures found in different cells, then perform tests to see if the sample is alive.
If you were swimming and it was time to get out, and the relative humidity of the air is 46 percent. Will you warm or cool when you step out of the pool?
You will be warm when you get out.
The image shows a line graph.
Line graph
Which scientist is most likely to use this visual aid in a
presentation about ocean temperatures?
O one who wants to show the process of taking ocean
temperatures
o one who wants to show the locations of where ocean
temperatures were taken
O one who wants to show an image of where certain
temperatures are found in an ocean
O one who wants to show measurements of ocean
temperatures in one spot over time
Answer:
th one who wants to show the process of taking ocean temps.
why are there circulation systems in the earths oceans and its atmosphere
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
The terminator gene and faster, more efficient ways of developing hybrids are practices known as
A)
green farming
B)
monoculture farming
C)
genetic engineering
D)
traditional farming
Answer:
C) genetic engineeringExplanation:
Hope this helps
Answer:
C) genetic engineering
Explanation:
got it right on edge
Cells- Do you think sloths are unicellular or multicellular? Why?
Answer:
unicellular means one cell, and multicellular is multiple cells. just look at the prefixes and suffixes and the answer will be obviously apparent
if you do this and still don't know the answer, then learn the definition of a multicellular organism.
A weak acid or base used to neutralize a strong acid or base
Answer:
To neutralize acids, a weak base is used. Bases have a bitter or astringent taste and a pH greater than 7. Common bases are sodium hydroxide, potassium hydroxide and ammonium hydroxide. Bases are neutralized by using a weak acid. Products for Acid and Base Neutralization
Explanation:
To neutralize acids, a weak base is used. Bases have a bitter or astringent taste and a pH greater than 7. Common bases are sodium hydroxide, potassium hydroxide and ammonium hydroxide. Bases are neutralized by using a weak acid. Products for Acid and Base Neutralization
A cell that consists of a 65% salt concentration is placed in a solution with a 27% salt concentration. What will happen to this cell?
Answer:
The correct answer would be - the cell will get water and expand.
Explanation:
If a cell with a higher salt concentration is placed ins a low salt concentration solution then the water will move through the cell membrane into the cell and the cell will swell or expand.
Water always moves from a low solute concentration to a high concentration area, therefore, if the cell has more salt concentration than outside the cell water move inside the cell which leads to an increase in the water concentration inside the cell and expands its size.
In the Mitochondria, two ATP molecules are produced dotseveral other compounds are also created these compounds are capable of storing high slash energy electrons startthe compounds are fan changed into other forms that can carry the high-energy electrons to the next stage.. |Which word from the paragraph help this reader to understand the meaning of "produced"? |. 1. Storing
2.compounds
3.created
4.change.
Answer:
Electron transport chain
This stage produces most of the energy ( 34 ATP molecules, compared to only 2 ATP for glycolysis and 2 ATP for Krebs cycle). The electron transport chain takes place in the mitochondria. This stage converts the NADH into ATP.The citric acid cycle is a series of chemical reactions that removes high-energy electrons and uses them in the electron transport chain to generate ATP. One molecule of ATP (or an equivalent) is produced per each turn of the cycle.
Explanation:
