Answer:
molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
Explanation:
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds. Molecules are distinguished from ions by their lack of electrical charge.
For each of the following situations, predict
whether the Hardy-Weinberg equilibrium
would be maintained after several generations.
Explain your reasoning.
(a) A population of long-tailed widow birds is
maintained at a local zoo.
(b) A population of birds lives on an isolated
island.
(c) Climate change is melting the polar ice
where polar bears live.
(d) A rat population lives in the subway system
in Toronto.
In a population of long-tailed widow birds is maintained at a local zoo. The Hardy-Weinberg equilibrium would be maintained after several generations if they receive proper care and management at the zoo.
A population of birds lives on an isolated island, the Hardy-Weinberg equilibrium would be maintained after several generations due to non-disturbed environment and no human interference.
Climate change is melting the polar ice where polar bears live, the Hardy-Weinberg equilibrium would be maintained after several generations if the melting of polar ice can be recovered or the polar bears go to the suitable place.
A rat population lives in the subway system in Toronto, the Hardy-Weinberg equilibrium would be maintained after many generations if the rat population gained less predator and more food.
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why still humans have hair on body ?
Answer:
Hair is important for maintaining skin health, as each hair follicle has blood vessels, nerves, and fat around it. Hair follicles are rich in stem cells that promote healing of the skin — helpful if you have a cut or wound. Hair also keeps a person warm and protects the skin from sun damage.
Explanation:
this might help
Answer:
See below
Explanation:
Humans have hair on their bodies to prevent infections from entering the body. Lets take nose hair for example, while you breathe in and out threw your nose, any airborne virus may be caught and tangles in your nose hair, thus making it near impossible to enter your body, it is still possible though to enter the body.
Hair is important for maintaining skin health, as each hair follicle has blood vessels, nerves, and fat around it. Hair follicles are rich in stem cells that promote healing of the skin — helpful if you have a cut or wound. Hair also keeps a person warm and protects the skin from sun damage
While humans have developed clothing and other means of keeping warm, the hair found on the head serves primarily as a source of heat insulation and cooling (when sweat evaporates from soaked hair) as well as protection from ultra-violet radiation exposure. The function of hair in other locations is debated.
Baby geese following a human is an example of:
Operant conditioning
Trial and error
Imprinting
Insight
Animals right after birth or hatching engage in a sort of intrinsic learning called imprinting . Baby geese, a human, is an example of imprinting. Therefore, option C is correct.
What is imprinting ?An animal's imprinting refers to a crucial early stage of its life when it builds attachments and creates a sense of its own identity. Mammals and birds have a pre-programmed urge to imprint on their mothers from birth.
Animals right after birth or hatching engage in a sort of intrinsic learning called imprinting to recognize their caregiver for care, food, and protection. As a result, they can grow behavioral patterns that are unique to their species for socializing, mating, and surviving.
In order to continue its evolutionary survival, the child recognizes its mother through oral tactile memory throughout the imprinting and following latching stages of emotional and neurobehavioral development.
Thus, option C is correct.
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examine the image shown here. These two species shown are pollinators and the flowering plant that they feed upon. Which statements accurately describe the interaction between these two groups?
A)Natural selection put pressures on the pollinator to increase its fitness over generations.
B)Heterozygote advantage provided a mechanism for species to become better fit for within their environment.
C)Convergent evolution caused the proboscis of the pollinator to mechanically fit with the flower of the other species.
D)The pollen of one species increased the mutation rate of the pollinator species so that they were more adapted to their flower.
E)Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.
Coevolution refers to the existing relationship between two species, and the selective pressures that each of them imposes on the other. These pressures result in both species evolving together in the same direction.
------------------------------------
When the interaction between two species is so strengthened that each population exerts a selective strength over the other one, simultaneous adjustments occur, resulting in Coevolution. Coevolution is the biological relationship existing between two or more species that interact and adapt to each other. Coevolution is the mechanism by which coadaptation can be explained. Coadaptation refers to reciprocal genetic changes in species that interact. This is due to the selective pressures that each of them imposes on the other. Coadaptation is what can be seen or observed.For coevolution to exist, there must be phenotypic variation and heritability. Coevolution can be specific or diffuse. Specific or strict coevolution involves two species in interaction in which the evolution of each one responds to selective pressures applied by the other species.
The correct option is E) Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.
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Answer:
A & E
A.) Natural selection put pressures on the pollinator to increase its fitness over generations.
E.) Coevolution provided a mechanism for these two species to put selective pressures on each other to shape the pollinator structures.
Explanation:
Si un teléfono fuera un ser vivo que parte sería la célula?
Answer:
TAL VEZ LOS PIXELES
A mutagenic process that alters the chromosome segment by repeating one or more segments is referred to as
Group of answer choices
deletion.
duplication.
crossing over.
substitution.
Answer:
The answer is duplication
Marking as brainliest!
Answer:
A) Ionic Compound Formula: LiBr
B) Ionic Compound Formula: MgCl2
Ionic Compound Name: Magnesium Chloride
C) Cation: Cu+2
Anion: F-1
Ionic Compound Name: Copper (II) Flouride
D) Cation: Fe+3
Anion: O-2
Ionic Compound Formula: Fe2O3
Explanation:
I hope these answers help. If there is any that's wrong please tell me.
PLS HELP
Why is DNA found in both the nucleus and in the mitochondria? What is the advantage of
doing this?
AnswerAll multi-cellular life forms have them. In some organisms the DNA that codes for the mitochondrion has been moved into the nucleus and become part of the DNA of the host cell, but in vertebrates the mitochondria keep their own DNA inside themselves.
Explanation:
Answer:
Mitochondria are found in all eukaryote organisms, unlike prokaryotes. Both nucleus and mitochondria have their own DNA. The DNA of mitochondria is called mitochondrial DNA. The mitochondrial DNA helps in the production of ATP that produces energy whereas the DNA in the nucleus is the genetic material of the cell.
Explanation:
The presence of DNA inside the mitochondria is because of the fact that mitochondria are believed to be a primitive bacterium that was consumed by a eukaryote and became an essential organelle of the eukaryotic cell. Today, mitochondria exist only inside a eukaryotic cell serving as the powerhouse of the cell and containing mitochondrial DNA containing 37 genes. Advantaged of DNA in both nucleus and mitochondria:Advantages of DNA found in mitochondria and nucleus are: 13 genes of mtDNA perform the function of oxidative phosphorylation.Other genes help in the formation of tRNA and ribosomes which helps in efficient protein synthesis and production of ATP.The presence of a high number of mtDNA in the cell helps in producing a great amount of energy for the functioning of the cell.For more information:
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Where do the building materials for cells come from?
Spinocerebellar tract axons carry sensory information into the cerebellum by the ________________
Posterior lobe
Inferior cerebellar peduncle
Middle cerebellar peduncle
Superior cerebellar peduncle
Anterior lobe
Spinocerebellar tract axons carry sensory information into the cerebellum by the inferior cerebellar peduncle. This peduncle contains afferent and efferent tracts of the cerebellum.
The cerebral peduncles are responsible for learning motor skills, refining motor movements, etc.
The inferior cerebellar peduncle (also called the restiform body) is a thick strand that connects the cerebellum to other parts of the nervous system.
This peduncle (inferior cerebellar peduncle) is located ventromedially to the middle cerebellar peduncle.
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Superweeds: Due to new genetic engineering technology, scientists have been able to alter the DNA in corn, soybeans, and cotton to make them resistant to the chemical herbicides used to kill weeds. Consequently, millions of acres of United States farmland have been regularly sprayed with herbicides, leading to the development of a herbicide tolerance in weeds. Producers must now use larger amounts of herbicides and find new, stronger chemicals to fight off the herbicide-tolerant weeds.
What was the initial factor that led to the development of herbicide-resistant weeds?
Group of answer choices
artificial selection
spontaneous reproduction
genetic engineering
genetic cloning
Answer:
Genetic engineering
Explanation:
When neurons/nerves are cut, the cells cannot deliver neurotransmitters. Explain how this may affect the body:
Answer:
Nerve: When a nerve is cut, both the nerve and the insulation are broken. Injury to a nerve can stop the transmission of signals to and from the brain, preventing muscles from working and causing loss of feeling in the area supplied by that nerve.
Neuron: An injury to a neuron can stop the signals transmitted to and from the brain, causing muscles to not work properly or a loss of feeling in an injured area. Nerve injuries can impact the brain, the spinal cord, and peripheral nerves.
Explanation: hope this helps :)
Which of the following was NOT common practice during the Green Revolution? A. using large amounts of manmade fertilizer B. using large amounts of water C. decreased frequency of cropping D. using large amounts of pesticides
Decreased frequency of cropping was not a common practice during the
Green Revolution.
The Green revolution occurred between the 1950s and 1960s and involved
the increase in agricultural products through the adoption of various
techniques and mechanisms.
The techniques included using of fertilizer, pesticides and herbicides to clear
weeds and pests for optimal growth. There was also an increase in the
frequency of cropping and not a decrease.
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Using spray cans with large concentrations of VOCs has no impact on air quality.
True
False
Answer:
It is false. It does have an impact on the air because VOC are stuff like perfumes, paint, and scented items with pollution source
Explanation:
also i got it right on the test
Heat from the sun travels to earth by what
Answer:
Heat from the sun travels to earth by Electromagnetic Radiation.
The process of mitosis plays an important role in which of the following? Check all that apply.
cell death
cell replacement
cell regeneration
cell growth and development
Answer:
2,3,4
Mitosis is the reason we can grow, heal wounds, and replace damaged cells
Answer:
b,c,d
Explanation:
edge
please help me what hotspot is it
Answer: i am not 100% sure what it is, but i think its those gray dots
Explanation:
Answer:
Mitochondria
Explanation:
Does anyone understand this???
57:55
Where are rain gauges located?
a. on or near the ground
b. one meter above the ground
C. on weather balloons
d. on satellites
Please select the best answer from the choices provided
A
B
Ο Ο Ο Ο
С
D
Mark this and return
Save and Exit
Next
Submit
Answer:
A rain gauges are located on the ground
1. What are the three components of a nucleotide (Remember only the nitrogen bases
change between nucleotides). Draw all four nucleotides below:
Answer:
adenine, cytosine, guanine or thymine
Explanation:
Nucleotides are made up of 3 parts. The first is a distinct nitrogenous base, which is adenine, cytosine, guanine or thymine. In RNA, thymine is replaced by uracil. These nitrogenous bases are either purines or pyrimidines.
In 3–5 sentences, explain why electrical wires are often constructed from metal coated with rubber, and how that is similar to metal pans having rubber or plastic handles.
Answer:
Electrical wires are often constructed from metal coated with rubber to act as insulator. Metal pans have rubber or plastic handles as insulator. Thus, with insulator, we can prevent from getting electrical shock when we touch the wire.
Electrical wires are often constructed from metal coated with rubber because it provides the wires with a specific property known as Insulation.
What is the composition of electrical wire?Electrical wires are made up of metals like copper and aluminum. But apart from these, they are generally coated with rubber in order to make them an insulating agent. These coated rubbers are poor conductors of heat and electricity.
The same mechanism is applied in the construction of metal pans that have rubber or plastic handles as well. This is because being poor conductors of heat and electricity, rubber or plastic is ideal for holding an object which is completely made up of metals.
Therefore, due to possessing a property of insulation, rubber or plastic is often used in the coating of electrical wires and holding metal pans.
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Carbohydrates and fats both
Answer:
They are both used for energy
I don’t get this can someone help?
Answer:
It’s mass!
Explanation:
Because we are talking about weight here
if this isn’t correct srryyyy
have a good night :D
You are able to extract mitochondria from the cell and remove the outer membrane. You want to show that the mitochondria can still produce ATP if placed in the right solution. The solution should be isotonic, but at what pH
Answer:
Low PH
Explanation:
The high external acid concentration causes an increase in H+ in the inter membrane space leading to increased ATP production by ATP synthetase.
Mitochondrial production of ATP requires a concentration gradient of H+, with a high concentration at the inter membrane space and a low concentration in the matrix. The inner membrane is impermeable to H+, but the outer membrane of the mitochondria will allow H+ to pass through. Thus, placing mitochondria in a low pH buffer produces a H+ gradient that can generate ATP through ATP synthetase.
The heart is an example of which level of organization within an organism?
cell
organ
tissue
organ system
The heart is an example of an organ.
PLZ HELP I HAVE BEEN STUCK ON THIS AND ITS DUE SOON! HELP ASAP! I NEED THIS NAMED I need help naming Antibodies and Antigens
pls find a image and explain but have at lease 6 of theses and you can use them more then once,
1 heavy chain
2 light chain
3 Variable region
4 constant region
5 Antigen binding site
6 disulfide bridge
7 epitope
(you will get 100 points for helping me out!)
Answer:
1. Heavy chain is an antibody which consists only of two heavy chains and lacks the two light chains usually found in antibodies.
2. Light chain is the small polypeptide subunit of an antibody (immunoglobulin).
3. Variable region is the ends of the light and heavy chains
4. Constant region is determines the mechanism used to destroy antigen.
5. antigen binding site is the part of an antibody which recognizes an antigen, the antigen-binding site of an antibody.
6. disulfide bridge are formed by the oxidation of 2 thiol groups within Cys residues and in many extracellular proteins.
7. epitope is the specific piece of the antigen to which an antibody binds. The part of an antibody that binds to the epitope is called a paratope.
What is the main difference between a child and a teenager?
Answer:
puberty
Explanation:
Answer:
A child is a kid that is in a learning age. a child might say anything that does not make any sense. However, a teenager must be learned on how to behave. A teen must talk sense able things and not like a kid.
Explanation:
Hoped this helped.
I NEED HELP FAST, I HAVE 5 MINS TO FINISH THIS. I WILL GIVE BRAINLEST TO WHOEVER IS RIGHT.
The table below compares two types of respiration in animals.
Respiration Types -
Type A:
Water Produced: Yes
Kreb's Cycle Involved: Yes
Type B:
Water Produced: No
Kreb's Cycle Involved: No
Which statement is correct about Type A and Type B respiration?
A. Type A respiration does not produce ATP, but Type B respiration produces ATP.
B. Type A respiration produces ATP, but Type B respiration does not produce ATP.
C. Type A respiration produces lactic acid, but Type B respiration does not produce lactic acid.
D. Type A respiration does not produce lactic acid, but Type B respiration produces lactic acid.
Answer:
D
Explanation:
A is aerobic respiration
glucose + Oxygen ---> Water + CO2 +32 ATP
Krebs cycle takes place in mitochondrial matrix
ATP is synthesised during glycolysis, krebs cycle and oxidative phosphorylation in electron transport chain
B is anaerobic respiration
Glucose--> lactic acid + 2ATP
Krebs cycle doesn't take place
ATP is synthesised during glycolysis only
Answer:
D
Explanation:
you should mark the other guy Brainleist it's only fair
Give several reasons why the cane toads can be so disastrous for native species. In other words, what are the reasons why they are such successful invaders
Answer:
They reproduce so quickly and largely to occupy the areasb)They spread everywhere in Australia c)They produce poison component in skin which cause native species dead. For example, the steroids, which affect heart muscles, will kills the western native cats in 20 minutesd)They do not have natural enemies e)People think cane toads are petsf)Anything that moved and smaller than cane toad was potential prey2. Describe what might happen to the ecosystem where the toads invade.a)Because the cane grub and beetle cannot satisfy their requirement of food, they eat everything, the ecosystem will damageb)They live in the people’s garden and house, which influences people’s daily lifec)The gland is poisonous, which causes people dead, especially for babies and young childrend)They will hurt people’s eyese)They need native animals
Explanation:
HOPE IT HELPS :D
Which of the following are unique to eukaryotic cells? [mark all correct answers] a. DNA b. Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e. Golgi complex
Answer: B, C, D, E
Explanation: DNA is found in all cells, but nuclei, mitochondria, both types of ER's, and Golgi complexes are only found in eukaryote cells.
The following that is unique to eukaryotic cells are: Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e. Golgi complex.
What is a eukaryotic cell?A eukaryotic cell is one in which all cell organelle is present, and it is present in higher plants and animals. It has distinctive organs and functions are also divided.
Thus, the correct option is b. Nucleus c. Mitochondria d. Rough and smooth endoplasmic reticulum e.
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