Answer:
B
Explanation:
the second is the best explanation
Calculate the mass of an object whose weight is 400 N and acceleration due to
gravity is 10 m/s2
Answer:
40
weight= 400N
acceleration due to gravity= 10m/s2
now
force=m*g
400=m*10
m=40kg
Moving ions against a concentration gradient requires energy and results 2 points
in uneven concentrations of the ions. ATP powers the pump, allowing it to
create and maintain
of these ions. *
concentration gradients
equilibrium
diffusion
osmosis
Answer:I think osmsis
Explanation:
This animal DOES NOT have live birth, instead this animal...?
Answer:
The platypus is one of only five species of monotremes in the world. These are mammals that lay eggs instead of giving birth to live young.
:-))
Which of the following is a requirement for a population to be in Hardy-Weinberg equilibrium?
A) The population must be very small
O
B) immigration must outpace emigration
O
C) each allele must be equally beneficial
O
D) There must be a high mutation rate
I think the answer is B. Immigration must outpace emigration. Hope this helps!
Hardy-Weinberg equilibrium is the principle of the genetic variation being constant. Each allele must be equally beneficial for a population to be in equilibrium. Thus, option C is correct.
What is the requirement of Hardy-Weinberg equilibrium?
Hardy-Weinberg equilibrium states the invariant nature of genetic variation when there are no disturbing factors in a population. For an equilibrium condition, the population should have a large size. Each allele must be equally beneficial so that there is no genetic drift.
There should be no immigration or emigration of the organism in a particular population as it affects the generation and individuals. Also, there must be no spontaneous mutations for the variation to occur.
Therefore, each allele must be equally beneficial for equilibrium.
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Explain how PHOTOSYNTHESIS works in plants
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. ... This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.
Explanation:
which describes a difference between a positive and negative feedback loop?
a. the output of a system stimulates another cycle of the system only in a positive feedback loop.
b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
c. the output of a system maintains conditions around a set point only in a positive feedback loop.
d. the output of a system signals the system to disregard the stimulus only in a negative feedback loop
Answer: b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
In the negative feedback loop, the feedback reduces the excessive response of the stimulus for example regulation of body temperature, and control of blood glucose level. In the positive feedback loop, the response of a stimulus is intensified. Example, positive feedback is the childbirth and blood clotting. According to the negative feedback loop the output of the system keeps the internal body environment constant with respect to the changes in the external environment hence, maintains the homeostasis.
Answer:
b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
What are three differences between rocks and soil
Answer:
Rocks are made of one or more minerals. based on the way the rock was formed: sedimentary metamorphic and igneous Soil is formed of fine rock particles mixed with air, water and particles from dead plant and animal matter.
What are the 3 main types of star "corpses"? plz hurry
Answer: white dwarfs, neutron stars, and black holes
Explanation:
Weigh 10 grams of sugar and then dissolve in 100 mL of water (2
tools).
Answer:
180 gramsExplanation:
The solubility of sugar would be about 180 (a maximum of 180 grams of sugar can dissolve in 100 milliliters of water at room temperature). When a solvent has dissolved the most solute it is called a saturated solutionYou would need a scale to weigh it and a beaker/test tube to hold the water...
what is the problem with organizing organisms taxonomically purely based on their physical traits
Answer:
See the answer below
Explanation:
The problem with grouping organisms together taxonomically based on their physical traits is that organisms that not genetically or evolutionally similar would be grouped together. Grouping would be based entirely on superficial similarities instead of combining different features such as genetics, nutrition, the complexity of bodies, etc.
Based on physical traits, for example, all flying organisms will be grouped together. Birds, flying insects, bats, etc. would be grouped together, whereas, they are quite different from one another when it comes to the complexity of bodies and other features. Even though some insects have wings and can fly like birds, insects have exoskeletons and birds do not, the body of birds is more complex than that of insects, and evolutionally, birds are more advanced than insects.
Hence, grouping organisms based on their physical traits only would be too superficial and not reflect the true relationships between organisms.
What is the role of protein channels in the cell membrane?
Answer:
protein channels to cell membranes
(HELP PLEASE I WASNT IN SCHOOL YESTERDAY) All of these forms of energy are involved in the human body's everyday life EXCEPT
Group of answer choices
mechanical energy
thermal energy
nuclear energy
Answer:
I'm pretty sure it's nuclear energy.
Answer:
the answer is the last one hope it helps
Which best explains the role of plants in the nitrogen cycle?
Answer:
Assimilation
Explanation:
This is how plants get nitrogen. They absorb nitrates from the soil into their roots. Then the nitrogen gets used in amino acids, nucleic acids, and chlorophyll. ... When a plant or animal dies, decomposers like fungi and bacteria turn the nitrogen back into ammonium so it can reenter the nitrogen cycle.
NOT SURE IF THIS IS RIGHT PLEASSSEEEEWEEE HELPP
Its false
Because each organism some has same needs or different needs.
When air has reached its dew point
A) Air has to be cold
B)Air can hold more water
C)Air is saturated
D)Air has low humidity
Answer:
When air has reached the dew-point temperature at a particular pressure, the water vapor in the air is in equilibrium with liquid water, meaning water vapor is condensing at the same rate at which liquid water is evaporating.....
How does the structure of DNA explain chargaff's rule?
Answer:
Chargaff's rules state that DNA from any species of any organism should have a 1:1 stoichiometric ratio (base pair rule) of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine
Chargaff's Rule explains that in the natural DNA, the total number of guanine equals to the number of cytosine and the total number of adenine equals to the number of thymine. This tells about the base pair composition of DNA molecule.
What is Chargaff's rule?Chargaff's rule states that in the DNA molecule of any species or organism, the total amount of guanine residues should be equal to the amount of cytosine residues and the amount of adenine residues should be equal to the amount of thymine residues. A stoichiometric ratio of 1:1 of purine and pyrimidine bases i.e., A + G = T + C should be fulfilled.
Chargaff's rule describes the ratio of the various nitrogenous bases present in the DNA molecule. It aids in the determination of the structure and composition of DNA in living organisms. It is constant for a species.
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help plsllsss
question on picture
Answer:
Body temperature
Explanation:
Describe the process of absolute dating as it relates to igneous rock and the fossil record.
Answer:
Radiometric dating. Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks. ... When molten rock cools, forming what are called igneous rocks, radioactive atoms are trapped inside. Afterwards, they decay at a predictable rate.
WHY IS A FOSSIL FOUND IN MULTIPLE LAYERS OF ROCK (TIME PERIODS) NOT CONSIDERED A RELIABLE INDEX FOSSIL?
Why must an mRNA copy be made for Protein Synthesis?
A. Ribosomes cannot read DNA, only RNA.
B. DNA must stay inside the nucleus.
C. Ribosomes are too big to enter the nucleus.
D. DNA is too degenerate to use without mRNA.
Answer:
A
Explanation:
its not D or C and B might be true but its A okay
Why must an mRNA copy be made for Protein Synthesis because C. Ribosomes are too big to enter the nucleus
Why is mRNA important for protein synthesis?
mRNA is the molecule that includes the message contained within DNA to the ribosome. Ribosomes are where proteins are produced. mRNA is vital because ribosomes cannot attain the DNA inside our cell nucleus, which is the region within the mobile wherein DNA is housed.
Why is it important to make an mRNA reproduction of a DNA gene earlier than protein synthesis?
So as for cellular to fabricate these proteins, particular genes inside its DNA should first be transcribed into molecules of mRNA; then, these transcripts must be translated into chains of amino acids, which later fold into completely useful proteins.
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There is a belief that there are as many neurons in the human body as there are stars in the Milky Way Galaxy. Do you believe this? How would you react on this?
Answer:
I do believe this. If you take the amount of neurons in the average adult body and expand them to the size of a say a blueberry It would expand to be the approximately the size of the sun
Explanation:
The given statement is true. It is a surprising fact that helps a person to believe that his brain has the power to take him beyond expectations.
What are Neurons?These are the nerve cell that is found in the brain and nerve tissue in the body.It has been estimated that there are 100 billion neurons in the human brain which is about the number of stars in our Galaxy.The human brain is very complex and this complexity comes from such a huge number of neurons.
Therefore, the given statement is true. It is a surprising fact that helps a person to believe that his brain has the power to take him beyond expectations.
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What type of cell is more likely to replicate and replicate faster brain cell or hair cell
Answer:
hair cells is most likely to replicate faster than the brain cell
Explanation:
__________
Can some one tell me why i have no common since but i have all A's in school? Im really confused
Answer:
Well, sometimes you use the process of elimination in some areas.
Explanation:
For example,
You don't have common sense in math class, but you can determine how to divide and multiply an equation. Sometimes you don't have to be "AP Smart", and you can still have all A's.
Or you could just research the answers :)
True or False: Epinephrine enters
the cell after it binds to the receptor.
Epinephrine enters the cell after it binds to the receptor. Yes, this statement is true.
What are the functions of epinephrine?
Adrenaline, also known as epinephrine, is a hormone and medication which is involved in regulating visceral functions. It appears as a white microcrystalline granule.
Epinephrine injection is used for emergency treatment of severe allergic reactions (including anaphylaxis) to insect bites or stings, medicines, foods, or other substances.
Through its action on alpha-1 receptors, epinephrine induces increased vascular smooth muscle contraction, pupillary dilator muscle contraction, and intestinal sphincter muscle contraction.
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why does the temp of the air increase with the height of the stratosphere?
Answer:
The hot air rises and the cool air falls
Explanation:
NEED HELP
1. Prokaryote is a simple cycle compared to eukaryotic. The prokaryote is a
simple cycle because of three reasons.
A.
B.
C.
Answer:
A. Small size.
B. A single cell or unicellular.
C.it has one chromosome which is not true and it is called plastid.
Explanation:
This is because prokaryote are unicellular organisms that lack nucleus and membrane bound organelles. The are smaller in size compare to eukaryotic, which have large surface to volume ratio. They lack mitochondria, Golgi apparatus, endoplasmic recticulum, e t.c. They have only one chromosomes which is not even a true one and it is called plastid. Examples of prokaryote include bacteria.
Which person is collecting data through the participant observation method?
O A. William, who is reviewing the comments people wrote on
questionnaires
B. Dakota, who is calculating the results from a survey
OC. Hosea, who is watching people in their normal suroundings
OD. Brittany, who is reading research done by others
Answer:
C. Hosea, who is watching people in their normal surroundings.
Explanation:
Which of the following statements about plankton or nekton is NOT correct?
a. Nekton are active swimmers.
b. Phytoplankton are important primary producers.
c. All plankton are closely related to plants.
d. Plankton drift or swim weakly.
e. Zooplankton are heterotrophic plankton.
Answer:
B is the answer
Explanation:
plants make their own food and in this case phytoplankton aslo plankton are known as plants
what is not a main principle of the cell theory?
a-cells are the basic unit of structure and function in living things
b-new cells are produced from existing cells
c-all cells enclose their DNA within a nucleus
d-all living things are made of cells
Answer: c not all cells have a nucleus (prokaryotic cells don’t)
Explanation:
Does anyone know the answer?
Answer:
Fungi
Explanation:
