its shows the percentage of alleles in a gene pool that will remain in equilibrium when there is no new mutation
Out of what material did coal form?
A. Sea organisms
B. Plant material
C. Limestone
D. Dinosaur fossils
B- plant materials. Just took the test.
Answer:
plant material
Explanation:
After millions of years underground, the compounds that make up plankton and plants turn into fossil fuels. Plankton decomposes into natural gas and oil, while plants become coal.
List and describe several ways in which a recessive trait might be eliminated from a family or population
A recessive trait is often depicted as a lowercase letter, while a dominant trait is depicted as a capital letter. So, aa has two recessive genes, AA has two dominant genes, and Aa has both a dominant and a recessive gene. To eliminate the recessive gene, it has to have less of a chance of survival than the dominant gene. After a lot of time, if the aa or Aa gene keeps mixing with either AA or Aa genes, eventually the recessive gene will go away, although it will take many generations.
When is acetylcholine released into the synaptic cleft of a neuromuscular junction?
The release of acetylcholine occurs when an action potential is relayed and reaches the axon terminus in which depolarization causes voltage-gated calcium channels to open and conduct an influx of calcium, which will allow the vesicles containing acetylcholine for release into the synaptic cleft. ..
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[tex]\color{red}{\tt{Hope \ It \ Helps}} [/tex]
10. What does the practice of clear cutting involve?
O picking out high value trees to be logged
O causing less forest damage than selective cutting
O cutting down all the trees in an area
O removing all the vegetation in an area
Answer:
Cutting down all the trees in an area.
Explanation:
kind of in the name
only red tulips result from the cross between pure red and pure white tulips. Which statement is true?
Answer: I wouls say 4, but dont get mad at me if its wrong
Explanation: none of the other ones make sense execpt for 4 and 3
Many dietary supplements contain digestive enzymes the manufacturers claim are necessary to digest food properly. What will happen to these enzymes in the stomach? (Hint: Enzymes are proteins.) Will the enzymes continue to function once they have reached the small intestine? Why or why not?
The enzymes which are found in food supplements will be denatured in the stomach and lose their activity.
What are digestive enzymes?Digestive enzymes are enzymes which aid in the process of digestion in the body.
The body produces the digestive enzymes required for the digestion of food.
Due to the acidic nature of the stomach, digestive enzymes in the stomach are synthesized as proenzymes to prevent denaturation.
Therefore, the enzymes which are found in food supplements will be denatured in the stomach and lose their activity.
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I don’t understand this I need help
Answer:
3,2,1,4
Explanation:
as time goes on the water levels rise it expands the bay of the river
a monosaccharide is a ?
they are the simplest carbohydrates
PLEASE HELP IM ON A TIMER!!!!!!!!!!!!!!!!!!!!!!!!!
Science, middle school
Julia made the following table to compare prokaryotic and eukaryotic cells. Structure Prokaryotic cell Eukaryotic cells Cell wall is present Yes Sometimes Flagellum for movement Yes No X is present Yes Yes Which of the following would best replace X? Cell membrane Mitochondria Nucleus Vacuole
Mitochondria ,Prokaryotes lack mitochondria and instead have their ATP on their cell surface membrane. The eukaryotic cells are typically larger than prokaryotes and more various in their shape and structure.
Is mitochondria absent in prokaryotic cells?Prokaryotic cells are less structured than eukaryotic cells. They have no nucleus whereas their genetic content is free-floating within the cell. They also lack the numerous membrane-bound organelles found in eukaryotic cells. Thus, prokaryotes have no mitochondria.
Thus, option "B" is correct, Prokaryotes lack mitochondria and instead have their ATP on their cell surface membrane.
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I will give you 100 POINTS and BRAINLIEST (if you answer this correctly) !!
I am asking this because there is no result when I search it in the internet, so please avoid answers like 'search it in the internet'.
What is this structure? This structure's function is to transport, but I would like to know its exact name. This is a structure like muscle cell, red blood cell, or palisade mesophyll cell and not an organelle like chloroplasts or nucleus.
Answer:
Xylem structure
Explanation:
Xylem is a part of transport system of plants .
Xylem helps in transportation of water inside plantsOther one is phloem
Which helps in transportation of rest foods and mineralsSelect the correct answer.
Which statement correctly distinguishes between alternative energy and renewable energy?
O A. All alternative energies sources produce green energy, but not all renewable energy sources.
ОВ.
All renewable energy sources produce green energy, but not all alternative energy sources.
OC. All renewable energy sources have an infinite supply, but not all alternative energy sources.
OD.
All alternative energy sources have an infinite supply, but not all renewable energy sources.
Answer: A
Explanation:Renewable energy generation comes from sources that can be replenished naturally over time. Alternative energy generation does not produce greenhouse gases or harm the environment. These differences are important when discussing ways to fight global climate change.
can you help me to write a bibliography page
Explanation:
In general, a bibliography should include:
the authors' names.the titles of the works.the names and locations of the companies that published your copies of the sources.the dates your copies were published.the page numbers of your sources (if they are part of multi-source volumes)
How many days are in one year on Earth? Do all planets in our solar system have the same number of days in one year? What determines the number of days in one year?
Explain your answer.
Answer: There are 365 days in a year. The number of days in a year varied between the planets and the number of days in a year is depending on the number of times the planet orbits around the sun.
Explanation: I think this is the answer I’m not too sure though !
How many miles are in 67.2 g sulfur
Answer: 2.0957430219866113
Explanation:
Place the levels of classification in order from largest (most organisms) first (1) to smallest (only one organism) last (8).
Question 2 options:
Phylum
Species
Kingdom
Genus
Order
Class
Family
Domain
Domain, Kingdom, Phylum, Class, Order Genus, Family Species
Brainstorm various types of taxis that can be observed in animals. Describe two that have not been previously mentioned and indicate if they are positive or negative.
Taxes are the animals' movements orientated to stimuli or away from them. Phototaxis, chemotaxis, hydrotaxis, geotaxis, thigmotaxis, phonotaxis, etcetera.
What are taxes?
Taxes are the movements or changes in orientation done by organisms in response to a stimulus. It is about getting closer or farther from the stimuli. According to this, we can differentiate the followings,
Positive taxes ⇒ when the organisms react and move toward the stimuliNegative taxes ⇒ when the organisms react and move away from the stimuli
The stimulus is received by receptors in the organism's body. The type of response will depend on the type of stimulus.
Different types of taxes depend on the type of stimuli and the organism that receives them. Taxes might vary among plants and animals.
Taxe observed in animals are,
Anemotaxis ⇒ displacement according to the wind's direction. Some insects show these taxis. Phototaxis ⇒ organisms respond to light in different ways. For instance, some worms and cockroaches move away from light, while moths and flies are attracted to light. Phonotaxis ⇒ Orientation according to sounds. Geotaxis ⇒ motion according to gravitational movements. For instance, jellyfishes move to the bottom of the sea (positive geotaxis) or the surface (negative geotaxis). Hydrotaxis ⇒ Movement to or away from water. When marine turtles are born, they move toward the ocean.Reotaxis ⇒ Moving with or against the water current. Thermotaxis ⇒ Movements of the organism according to the source of the hit. Mosquitos for example express positive thermotaxis. Cockroach moves toward warm sources. Thigmotaxis ⇒ Responses to vibrations or pressures. For instance, spiders show positive thigmotaxis when they identify the vibrations of a trapped insect in their webs.Chemotaxis ⇒ Response of animals to chemical signals. For instance, ants show positive chemotaxis while looking for food. Sharks express positive chemotaxis when they smell blood. Moths show positive chemotaxis when they receive pheromones.Galvanotaxis ⇒ Motion according to electrical stimuli.Astrotaxis ⇒ Movements following the stars, the sun, or the moon.
Having made these descriptions, you can mention all of them and describe the followings,
→ Phototaxis, explaining that
moths are attracted to light expressing positive phototaxis. cockroaches hide from lighted places, expressing negative phototaxis.→ Geotaxis, explaining that
jellyfishes express positive geotaxis when moving to the bottom.squids express negative geotaxis when moving to the surface.You can learn more about types of taxis at
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In red snapdragons, the combined expression of both alleles for flower color produces a new phenotype that is orange. This illustrates incomplete dominance. What are the chances of getting an orange flower from a cross between a yellow and orange snapdragon?
Answer:
the answer is idlk
Explanation:
What environmental change happens when the number of prey in a certain area decreases? The answer is Climate Change!!!!
Climate change
Increased predators
Pollution
Reduced space
Answer:
when the number of prey decrese, the number of their predators should also decrease. none of the answer choices make sense in this scenario.
Explanation:
If you consume excess calories and do not exercise, those calories are stored as _____ in your body.
Answer:
Fat is going to be your answer
Explanation:
If you don't exercise once in while your body is going to have fat in your stomach and may get bigger in size.
PLEASE HELP!!!
True or False? Sunspot activity is very unpredictable.
Answer:
its predictable
Explanation:
can somone help me orginize this
Answer:
b
Explanation:n
2. Mature nerve cells no longer divide, so they do not replicate their DNA. A cell biologist found that
there was X amount of DNA in a human nerve cell. She then measured the amount of DNA in four
other types of human cells. The results are recorded in the table below. Complete the chart by
filling in the type of cell from these choices: a sperm cell, a bone marrow cell just beginning
interphase of the cell cycle, a skin cell in the S phase of the cell cycle, or an intestinal cell beginning
mitosis and why.
Cell A 2.0x
Cell B 1.6x
Cell C 0.5X
Cell D X
Answer:
Explanation:
Some cells in the adult animals do not appear to exhibit division (e.g., heart cells, and many other cells divide only occasionally e.g., when there is need to replace cells that have been lost due to injury or cell death. These cells that do not divide further and exit G 1 -phase to enter an inactive stage called quiescent stage (G 0
why is medical care important in animal husbandry ?
Answer:
reducing the number of antimicrobials that is in use.
PLEASE HELP!!!
True or False? The "light" side of the moon is always facing Earth and the "dark" side
of the moon is always facing away.
Answer:
yes, the dark side of the moon always will facing away.
In 3-5 sentences, explain the difference in good and bad atmospheric ozone and how each is distributed in Earth's atmosphere.
(Giving 39 points and don't mind if this is in the wrong subject because this is Earth Science. And will give Brainliest!)
Answer:
Stratospheric ozone is considered “good” ozone because of this beneficial role. In contrast, ozone formed at Earth's surface in excess of natural amounts is considered “bad” ozone because it is harmful to humans, plants, and animals.Most ozone resides in the stratospheric ozone layer and a small percentage (about 10%) is distributed throughout the troposphere.
Between 15 and 30 kilometers above the surface of the earth, the ozone layer protects ourselves and other living things from the sun's harmful UV radiation.
What is ozone layer?The ecosystem and human health could be seriously impacted by the ozone layer's thinning. Over the entire globe, stratospheric ozone is being depleted.
However, the Arctic region of the northern hemisphere (where this phenomenon is more mild) than the southern hemisphere (Antarctica).
The so-called ozone hole is generally thought to be a concentration level of 220 Dobson Units or less, which is regarded to show serious ozone depletion. Only in the southern hemisphere is this noticeable. The ozone hole's historical maximum size is seen here at 28.4 miles.
Therefore, Between 15 and 30 kilometers above the surface of the earth, the ozone layer protects ourselves and other living things from the sun's harmful UV radiation.
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. What is the name of the substance that is collected by this system ?
1)Recycled immunity
2)Lymph
3)Trash
4)Blood
Answer: 2) lymph
Explanation:
example of chromosomes
Explanation:
Human has 46 chromosomes .............
1. The graph below shows the poxotatis reflex EMG recorded from the left
calf muscle of the patient in the previous question. What pathological
condition can explain the difference between EMG recorded from the right
and left leg
(2 marks)
1
1.0
2
E 0.5
Hammer signal (mv)
0.0
0
-0.5
-1
-1.0
-50
0
50
150
100
Time since hit (ms)
The stiff muscles (myotonia congenita) present in one of the patient's leg explains the difference between EMG recorded from the right and left leg.
What is EMG?
An EMG is an abbreviation for electromyography and it can be defined as a diagnostic test or procedure that is typically used to measure, assess and evaluate the health condition of muscles and the nerve cells (motor neurons) within the body of a living organism that controls them.
Based on the electromyography (EMG) test report, a pathological condition which explains the difference between EMG recorded from the right and left leg is as a result of the stiff muscles (myotonia congenita) present in one of the patient's leg.
In conclusion, electromyography (EMG) is primarily used to measure a burst of electrical activity across muscle membranes when they contract.
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They help identify harmful pathogens within the body so they can be destroyed
1)Lymph nodes
2)Lymph vessels
3)Lymph immune vessels
4)Lymph
A precipitin test is used to distinguish between animal
and human blood.
Answer:
The standard test used to determine whether blood is of human or animal origin is the precipitin test. This test is based on the fact that when animals (usually rabbits) are injected with human blood, antibodies are formed that react with the invading human blood to neutralize its presence.