Why is the nucleus called the "control center" of the cell?
Humans always have a negative impact on the environment.
Please select the best answer from the choices provided
T
F
Which of the following is true about CO_2CO
2
?
A
It does not have much effect on the climate.
B
It is a greenhouse gas.
C
Very little CO_2CO
2
is being emitted now.
D
If we cut CO_2CO
2
emissions by half, the temperature will stop rising.
Answer:
B.
Explanation:
It has a huge impact on the environment
It is being emitted in large amounts
And if we cut our carbon emissions in half it would delay the risk of raising the global temperature of 1.5 degrees Celsius but half of it would still pumped into the atmosphere along with the carbon dioxide already in the atmosphere.
But it is a greenhouse gas because it helps trap the heat remaining in Earth's atmosphere which is why the Earth is warming.
CO2 is a greenhouse gas.
what are greenhouse gases?
Greenhouse gases are gases in the atmosphere that affect the energy balance of the planet. The greenhouse effect is caused by them. Carbon dioxide (CO2), methane, and nitrous oxide, the most well-known greenhouse gases, can all be present in low concentrations in the environment.
The greenhouse gases in the atmosphere trap heat and warm the earth.
Carbon dioxide, methane, nitrous oxide, and water vapor (all of which exist naturally) are the principal greenhouse gases, as are fluorinated gases (which are synthetic).
Carbon dioxide (CO2) is released into the atmosphere as a result of the combustion of fossil fuels (coal, natural gas, and oil), solid waste, trees, and other biological materials, as well as chemical processes (e.g., manufacture of cement). As part of the biological carbon cycle, carbon dioxide is absorbed by plants and released from the atmosphere.
hence, CO2 is a greenhouse gas.
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What is the importance of Mitosis in both Prokaryotic and Eukaryotic Cells
Answer:
Mitosis is the process by which the overwhelming number of cell divisions in eukaryotic organisms occur. Eukaryotes (animals, plants and fungi) typically consist of literally trillions of cells, and at any time, countless worn-out, dead or irreparably damaged body cells need to be replaces. Mitosis is the eukaryotic answer to binary fission in the single-celled prokaryotes, which is similar on the surface but simpler at the level of details.
Explanation:
where do the microtubules of the spindle originate during mitosis in both plant and animal cells ??
A stiff layer on the outside of the cell to provide protection and helps the cell maintain its shape. Not in animal cells. BTH-This is in science.
Answer:
Cell Wall
Explanation:
Plant cells have cell walls, as animal cells do not. :)
Answer:
Cell wall
Explanation:
This is found outside the cell membrane. Its main purpose is to provode protection and to maintain its shape.
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Guys i need this quickly! i promise to give brainliest. This is way overdue too!
In a cross between a round seed (Rr) plant and wrinkled seed plant (rr), what percent of the offspring would have round seeds?
(Hint: create your own Punnett square on scratch paper!)
Answer:
50% of them would have round seeds
Answer:
When the given parents are crossed, they produce offspring with the genotypes rr ( showing wrinkled seeds) and Rr ( round seeds) in the ratio 1:1. Thus, the probability that the offspring will have wrinkled seeds is 50 percent
Explanation:
Which of the following describes a negative feedback loop?
Answer:
Which of the following describes a negative feedback loop?
Explanation:
where is option ?
Phototropism -
Definition:
Sentence:
Picture:
Can someone please help me?!
Answer:
Phototropism is the type of tropism where an organism responds to light as the stimulus.
Forexample, a plant enclosed in a box with a small hole and placed in light, the tip of the plant will grow towards the hole
Some one help me please ASAP !
Answer: model 3 answer, choice C
Explanation: A compound is a mix of two or more elements so then your answer is narrowed down to C and D. And now you have to see which one correctly identifies the definition of a compound. So now you have to see which one correctly identifies the definition of a compound. So your answer is model 3.
Is a seed a living organism
Answer:
Yes they are living organisms
The lymph nodes in your neck may become swollen when you have a bacterial infection in your throat as a result of:
clotting factors in the blood.
clotting factors in the blood.
the rapid division of bacteria in the lymph nodes.
the rapid division of white blood cells in the lymph nodes.
the rapid division of red blood cells in the lymph nodes.
Help pls
Answer:
i could be wrong but i think its
the rapid division of bacteria in the lymph nodes.
the rapid division of white blood cells in the lymph nodes.
Evaluate the evolutionary benefits of regulating an internal variable, such as body temperature, versus the cost.
Answer:
The benefits of being able to regulate the internal body temperature are many and it is considered a beneficial evolutionary character, since in this way the living organism is better maintained in relation to the environment, and it achieves better balance.
Reptiles cannot control their internal temperature, it depends on the external one, that is why to warm their body they need to be in the sun, and to cool down in the shade or in temperate places.
This is a little evolutionary characteristic since the environment is very changeable and the right or ideal temperature for the organism could not be controlled.
Explanation:
Faced with climatic catastrophes or extreme situations, living organisms cannot depend on the great climatic variants, in very cold situations one enters hypothermia and in very hot conditions the proteins are systematically denatured, entering a thermal shock.
What is the major difference during cytokinesis in eukaryotes with or without a cell wall?
Answer:
Cytokinesis in eukaryotic animal cells do not have a cell wall, it occurs through a strangulation process carried out from the plasma membrane, this process is called segmentation. Plant cells are characterized by cytokinesis based on septate, since the cell wall does not allow strangulation.
Explanation:
Cytokinesis means: cell division, it is a cellular process parallel to mitosis whose purpose is the division of the stem cell's cytoplasm between daughter cells. In animal cells, cytokinesis occurs by cleavage. At the end of anaphase and during telophase, the central part of the cell narrows, forming the segmentation groove, which deepens (strangulation). Plant cells, as they lack centrosomes, will form the achromatic spindle from two polar caps. In this case, cytokinesis does not occur by strangulation, but a cell wall is formed between the two daughter cells. This septum, called a fragmoplast, is formed from vesicles from the Golgi apparatus.
The major difference during cytokinesis in eukaryotes with or without a cell
wall is in the formation of cell plate in cells with cell wall while in animal
cells cytokinesis occurs through the formation of a cleavage furrow.
Cytokinesis is the process of cell division in which the cytoplasm divides
into two. Plants have cell walls while animals lack cell walls.
Animal and plant cells form cleavage furrow and cell plate respectively
which aids division into two equal parts.
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During photosynthesis, water and carbon dioxide become glucose and oxygen.
True
False
Answer:True
Explanation:
During photosyntheses
6co2+12H2O=glucose (C6H12O6)+6O2+6H2O
Answer: The correct answer is (True)
Explanation:
What is seed dispersal? Name some agents of seed dispersal
Answer:
The Process by which seeds spread over a wide area is known as seed dispersal..
some agents
Air
water
animals
etc..
Answer:
Seed dispersal is the movement, spread or transport of seeds away from the parent plant.
The most common methods are :
wind, water, animals, explosion and fire.
Only answer if you know the answer
Answer:
B. A helicase enzyme unwinds the DNA molecule, then corresponding nucleotides are added to the separated original strand forming two separate semiconservative molecules
Explanation:
DNA Replication is an important phenomenon as far as cell division is concerned. It is the process whereby a DNA molecule doubles its content or forms two DNA molecules from one.
In the semi-conservative model of DNA replication, an enzyme called DNA helicase unwinds the double stranded DNA molecule into two single strands. The single strands are then used as template for DNA polymerase to synthesize another molecule of DNA. Hence, two separate DNA molecules comprising of one old strand and one new strand.
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Apply: Which type of moth do you think was more common before the 19th century, when most trees were light in color?
Answer:
light moths
Explanation:
yes their were most light color in most trees
Light moths was more common before the 19th century, when most trees were light in color.
What are the functions of light moths?Insects, like moths, are drawn to bright lights because they make it difficult for them to navigate. It's a common sight, particularly in the summer: The lights, like lamps, were surrounded by moths and other insects.
Most nocturnally dynamic moths are drawn to light, a peculiarity known as sure phototaxis. However, because they are phototactic, some species, like the Old Lady (Mormo maura), tend to avoid it.
No one really knows why moths are drawn to light, but there are a few theories, and they also like the smell of fermented sugar and ripe fruit, which are both food sources.
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___is a process that tells cells to stop dividing if they touch each other.
Answer:
Contact inhibition
when a carbohydrate chain is attached to a protein what is the structure called
What are the two products made during the electron transport chain?
Answer:
Water and ATP
Explanation:
Answer:
H20 and ATP
Explanation:
Hope this helps :)
Which statement best
summarizes agricultural technology
over time?
A. Agricultural technology has
continually advanced over time, with
significant leaps forward during the
Agricultural Revolution and the Green
Revolution.
B. Agricultural technology
advanced quickly during the
Agricultural Revolution and the Green
Revolution but hasn't advanced since.
C. Agricultural technology didn't
advance before the Green Revolution.
D. Agricultural technology didn't
advance before the Agricultural
Revolution.
Agricultural technology has evolved over time, with significant leaps during the agricultural and green revolutions.
Agricultural revolutionAgriculture has been one of the sustainers (along with hunting) of early men and as such, has seen gradual development with time. Man has always been looking for better ways to do things in order to achieve outcomes.
With the era of the agricultural revolution, there was a huge transition of humans from the primitive lifestyle of hunting and fruit gatherings to that of agricultural settlements. Better ways to carry out crop production started receiving huge attention. from there, hand-made agricultural equipment started surfacing.
The green revolution has agriculture receiving utmost attention in terms of technological innovations. Farm machinery, agrochemicals, etc, started coming up with the result being a massive increase in crop production and general outputs.
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what is anaerobic respiration
Answer:
Anaerobic respiration is the type of respiration through which cells can breakdown sugars to generate energy in the absence of oxygen.
URGENT: Why does an increase in carbon dioxide increase the quantity of hydrogen ions in blood?
A.) When carbon dioxide mixes with water, it loses two electrons?
B.) When carbon dioxide mixes with blood, it slows the transfers of hydrogen ions.
C.) When carbon dioxides dissolves in water, it releases hydroxides.
D.) When carbon dioxide is dissolved in water, it forms carbonic acid?
Answer the more carbonic acid in the blood, the lower the pH level is. The amount of carbon dioxide removed from the blood messes with the pH level of the blood. this increases the amount of hydrogen ion concentration in blood and it decreases the blood pH levels
Explanation:
Choose all the answers that apply.
Eukaryotes _____.
are always multicellular
are always unicellular
may have evolved from prokaryotes
have membrane-bound organelles
have a true nucleus
are more primitive than prokaryotes
Answer:
3 answers
Explanation:
may have evolved from prokaryotes
have membrane bound organelles
have a true nucleus
Hope it helps.....
During a period of drought, members of a community may volunteer to water their lawns every other day, rather than daily. The most important benefit of this action is - It adds nitrogen to the soil It fertilizes the soil It reduces air pollution It conserves the groundwater supply
Answer:
hi love you have a nice day
Explanation:
Why are construction sites considered major sources of water pollution?" 1 point
They introduce high levels of salt into local water sources.
Soil erosion rates accelerate dramatically, impacting water quality in streams and
rivers
They cause sinkholes to form, which pollute local water sources.
Sawdust leaches into the soil, causing the water that runs into rivers and streams to
be cloudy and full of particles
Soil erosion rates accelerate dramatically, impacting water quality in streams and rivers.
Answer:
B
Explanation:
Which device works similar to the way kidneys work in the human body? HELP IM BEING TIMED!!!
Hemodialysis uses a machine to pull blood out of the body, filter it, and pump the clean blood back into the body again. The actual filtering happens in a part of the machine called a dialyzer, or artificial kidney. The dialyzer has two parts. One part is for blood.
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Skim the headings and bold words in this section. Write four steps scientists might take to solve a problem.
Answer:
1) Create a hypothisis 2) Create experiment 3) collect data 4) write conclusion
The four steps that a scientist uses to solve a problem are creating hypothesis, experiment, data sorting and writing conclusion.
What are hypothesis?A hypothesis is an elaboration posited for a characteristic. The scientific technique requires that a hypothesis be testable in order for it to be considered a scientific hypothesis.
Scientists typically base scientific hypotheses on previous findings that cannot be adequately explained by existing scientific theories.
Any process that co-ordinate system data into some defined order to make it simpler to understand, analyze, or visualize is referred to as data sorting.
The conclusion is the final section of an academic essay. The conclusion should restate your response to the question and briefly summarize key points. It does not contain any new points or information.
A scientist solves a problem by developing a hypothesis, conducting an experiment, sorting data, and writing a conclusion.
Thus, by using these steps, scientist can come to an end for the problem.
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