Answer:
Phospholipid bilayers create a selectively permeable barrier to the movement of ions and molecules important for cellular function.
Answer: The phospholipid bilayer acts as a barrier to the passage of molecules.
The more a muscle is stimulated (working), the smaller it will get.
O
true
О
false
Answer: true
Explanation: Sometimes, a subset of muscle fibers is activated, depending on how much force is needed. When the muscle is stimulated, calcium ions are released from its store inside the sarcoplasmic reticulum, into the sarcoplasm (muscle ). ... The SR is smaller and less elaborate, and stores less calcium ions.
Hydrogen ions are found in_____________
which hydroxide ions are found in_______
A. Acids and bases
B. Bases and acids
C. Acids and salts
D. Bases and salts
Answer:
A
Explanation:
found in acid and bases
All planets in the solar system have surfaces that are made up of either one of two materials. What are the two materials?
Answer:
are made of rock, containing common minerals like feldspars and metals like magnesium and aluminum.
Explanation:
(Uhm help?) The law of conservation of energy states that when there is an energy transfer or transformation, energy is lost.
Assuming this is a true/false question, the answer would be false.
According to the law of conservation of energy, energy is neither created nor destroyed; it simply changes forms.
Unless you are saying that some energy would be lost as heat, This is true.
Answer:
ae you trying to find the meaning?
Explanation:
The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. The only way to use energy is to transform energy from one form to another.
ex: the cue ball is shot at a stationary 8 ball. The cue ball has energy. When the cue ball hits the 8 ball, the energy transfers from the cue ball to the 8 ball, sending the 8 ball into motion. The cue ball loses energy because the energy it had has been transferred to the 8 ball, so the cue ball slows down.
when you breathe in air you bring oxygen into your lungs and blow out. A.Carbon dioxide B.oxygen C.carbon monoxide D.hydrogen
Answer:
Carbon dioxide
Answer:
Carbon Dioxide
Explanation:
What appearance is liquid and gas? Choose all that apply.
A: Flows
B: Rigid
C: Stays at bottom of the container
D: Holds it's shape
E: Fills container
F: Takes shape of container
G: No visible shape
Answer:
2 shows the differences among solids, liquids, and gases at the molecular level. A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape
Explanation:
What are 3 lines of evidence that corroborate the theory of evolution?
Answer:
Lines of Evidence supporting theory of evolution by natural selection: Fossil evidence, Biographical evidence and Anatomical evidence.
Explanation:
I majored in Biology
at which temperature would air hold the least water vapor?
Answer: I believe it's 60 degrees Fahrenheit or less, Since heat is required to have proper evaporation, then this will only be leading to a portion of the water condensed leading to a half condensation
Explanation:
Answer:
the coldest temp in F holds the least amount of water vapor..
what direction was the texas annexation in?
Explain how geography influences genetics
Answer: Environmental variables can influence the movement of gametes, individuals and groups of individuals among natural populations to affect gene flow patterns, which may have a profound influence on the spatial and temporal distribution of genetic variation and further, evolutionary progress of natural populations.
what factors create deserts
Answer:
Air is forced to rise over mountains, air cools and condensation occurs, rain falls over the mountains, dry air sinks down the other side of the mountain. Some deserts form in areas that lie at great distances from the sea. The air here is much drier than on the coast.
Explanation:
⦁ In what stage of an animal’s life cycle do most cells differentiate?
Answer:
Reproduction
Explanation:
Answer:
Animals and plants produced by sexual reproduction begin life as a single cell, a fertilised egg or zygote . These cells must divide by mitosis to produce a multicellular organism.
According to Vince Carter, "...the most important aspect of getting his degree was the sense of accomplishment it brought. " Use information from the selection and your own ideas to explain what he meant by this statement.
Answer:
the hard work he went through
Where in Nebraska was the oldest known species of horses found? *
Answer:
Knox County
Explanation:
i live in Nebraska
The oldest known species of horse found in Knox County in Nebraska, Eohippus, (genus Hyracotherium), also called dawn horse, is considered as oldest known species of horse, hence option 1 is correct.
What are the species of horses?The horse is a mammal considered a domesticated one-toed, hoofed mammal and belongs to the taxonomic family of Equus ferus, there is only one species of a domesticated horse but around 400 breeds developed for the improvement of their strength.
All horses are considered grazers, food like grasses and plants, and believed as herbivores in the tropic level, only plants not animals.
These animals generally use for domestication purposes by human beings for pulling carts and heavy materials.
Therefore, in Knox County of Nebraska, the oldest known species of horses is found, hence option 1 is correct.
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The given question is incomplete, so the most probable complete question is,
Where in Nebraska was the oldest known species of horses found?
1: Knox County
2: United States
3: Grand Island
4: Omaha
The electrons that travel through electron transport chain #1 (and that have been excited off of the chlorophyll molecules on photosystem #2) are used to
Answer:
energy released in these electron transfers is used to form an electrochemical gradient. In chemiosmosis, the energy stored in the gradient is used to make ATP.
Explanation:
Hope this helps :)
Can someone explain the Punnett square ?
Answer:
so in the punnet square, you hvae the 4 squares inside the big on. on top of the square, you have 2 letters, representing the dominant and the repressed genes. On one side, typically the left, you have another two letters, again genes. to get the gene types to fill in your squares, you take the first letter of the top set and the first letter of the side set. for this example, we are going to use Bb(top) and BB(side). you would take the B from the top, and you would pu it with the B from the side. in the top left square, you should have BB. next, you go and take that same top B and do it with the second letter of the side, B again. this again gives you BB. next, you take the second letter of the top, b, and you join it with B. in the top right square, you would write or type in Bb. Even though the b was on top, it is after the B because in this cause, it is not the dominant gene. when you do the second top and side letters together, you again get Bb.
Explanation:
the main points.
in this example, i used B to be the dominant gene and b to be the repressed/ submissive gene. you always put the dominant gene letter before the repressedmake sure you fill the squares in properly. in this one, you should have 3 BB and 1 Bb. this shows that the gene set BB is going to showwhen you fill in the squares, the first top letter and the first side letter fill in the top left square.the first top letter and the second side letter go left bottom.second top letter and first side letter go in right top.second top and second side go in right bottom.always place the dominant gene first in the punnet square.add me and message me if you need more help. we can also zoom to figure it out.
Does anyone know how to do this????!
Answer:
Check from the internet
6) Pamela went to the doctor for her yearly check-up. They discovered that she had decreased
estrogen and progesterone levels. After a few months of medication, her levels returned to
normal. She stressed to her doctor that she wanted a child. Her doctor said that with the
hormonal supplements, she should be able to conceive a child.
What systems are affected?
Why?
Answer:
strogen and progesterone levels
Explanation:
she stressed to her doctor
Young grouse crouch motionless near the ground when threatened by a predator. Owls
have needle sharp talons for catching prey. Buffaloberry plants have thick leathery leaves
that reduce water loss in summer. Insects have a hard exoskeleton that provides support
and allows movement.
Which of the organisms described above show a behavioural adaptation?
Young grouse
Owl
Insects
Buffaloberry plants
Answer:
the young grouse cause it crouch motionless near the groundwhen threatened
Which of the following is an example of resource partitioning?
A-Giraffes will often whack one another with their necks for control over food or mates
B-A fungus starts to decompose a dead tree, causing it to rot.
C-Various insects, such as lice, live on the bodies other organisms and eat their dead skin
D-Raccoons and foxes share the same territory, but raccoons hunt at night and foxes hunt during the day
Answer:
D
Explanation:
Resource partitioning is an example of sharing resources or splitting them up. In this case, both the raccoons and foxes hunt and share their territories or split them up depending on the time of day.
Summarize cell division in prokaryotes
According to the research, the correct answer is that unicellular living beings like prokaryotes have their cell division by binary fission, forming two identical individuals (daughter cells).
What is binary fission?It refers to the process of cell division where first the deoxyribonucleic acid (DNA) is duplicated and then cytonesis occurs, which involves the separation of the cytoplasm.
In this sense, it gives rise to two daughter cells with identical genetic material, this is the reproduction method shared by certain yeasts, algae, bacteria and other prokaryotic organisms.
Therefore, we can conclude that the cell division mechanism of prokaryotes is through binary fission where two daughter cells arise.
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is meiosis genetically identical?
Answer: No I read it on briticanna.com
Explanation:
Combined sewage overflow has been linked to eutrophication in ecosystems within NYC, including Jamaica Bay and Coney Island Creek. Based on your understanding of eutrophication, why might combined sewage overflow be causing an overgrowth of harmful algae in NYC? Explain your answer in YOUR OWN WORDS please.
(This is 7th grade science).
like your name
Explanation:
70 POINTS Use the library and other reference materials to research the discovery of radioactivity and its current applications. Then, write a 500 word report on what you have learned. Be sure to include the contributions of French chemists Marie Curie and Pierre Curie and the medical uses of radiation.
Answer:
can I write an essay
Explanation:
On April 20, 1902, Marie and Curie with success isolate radioactive metallic element salts from the mineral uranium ore in their laboratory in Paris. In 1898, the Curies discovered the existence of the weather radium and metallic element in their analysis of pitchblende. One year once analytic radium, they might share the 1903 Nobel prize in physics with French soul A. Becquerel for his or her groundbreaking investigations of radioactivity.
Marie Curie was born Marie Sklodowska in Warsaw, Poland, in 1867. The girl of a physics teacher, she was a talented student and in 1891 visited study at the university in Paris. With highest honors, she received a degree in physical sciences in 1893 and in arithmetic in 1894. That year she met state capital Curie, a noted French man of science and chemist who had done vital add magnetism. Marie and Pierre married in 1895, marking the start of a scientific partnership that will accomplish world renown.
What makes a fat saturated or unsaturated?
Answer:
Saturated fatty acids lack double bonds between the individual carbon atoms, while in unsaturated fatty acids there is at least one double bond in the fatty acid chain. Saturated fats tend to be solid at room temperature and from animal sources, while unsaturated fats are usually liquid and from plant sources.
Explanation:
Under certain external conditions, a person will perspire a great deal. For which internal condition does this response primarily provide homeostasis?
Answer:
Abnormally high temperature
Explanation:
Sweating or perspiration is a homeostatic response to abnormally high body temperature. Evaporation of the sweat causes cooling of the body and this causes the temperature of the body to return back to normal.
When the setpoint temperature of the body is breached by being too high, the negative feedback mechanism kicks-in, and the sweat glands of the skin becomes activated. The body sweats, and the evaporation of the sweat from the surface of the skin causes cooling and a return back to the setpoint.
Why are volcanoes so important to geologists?
Answer:
you can learn many things from them
Explanation:
scientists are able to examine, that volcanoes remove much of the earth's trapped heat when volcanoes erupt. Volcanoes also make new islands and scientists love to observe their habitats and the animals that inhabit them
Look at the graph below. A graph is shown with Absolute magnitude shown on y axis and Surface temperature in degree Celsius shown on x axis. The Dwarf stars are shown along a slanting line from coordinates 30,000 and minus 3 to 10,000 and minus 4. The Main Sequence stars are shown along a slanting line from coordinates 20,000 and minus 2 to 2,000 and minus 6. The giants are shown along a line parallel to the x axis from coordinates 5,000 and 2 to 2,000 and 3. The supergiants are shown along a line parallel to the x axis from coordinates 7,500 and 4 to 2,500 and 4. Point A has coordinates 20,000 and minus 4. Point B has coordinates 2,500 and minus 4. Point C has coordinates 5,000 and 2. Point D has coordinates 7,000 and 4. Which of the following stars is most likely to be red? Star A Star B Star C Star D
Answer:
Star A
Explanation:
If you look directly at the diagram, the dwarf stars are labeled under 'A' and are the least in mass and temperature.
Being the smallest and coldest, dwarf stars most commonly have red coloration, which would make them the obvious choice.
Star A which is a dwarf star has the coldest temperature, and therefore is a red star since red stars are the coldest stars.
What are stars?Stars are a large self-luminous bodies whichbpriducw large amounts of heat energy and light energy as a result of the nuclear reactions occurring within them.
Stars have different colors and different sizes.
Red stars are the coldest stars and also the least massive.
From the chart, Star A which is a dwarf star has the coldest temperature, and therefore is a red star.
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A body cell has been growing and synthesizing proteins. In the nucleus of this body cell, DNA replication is taking place, and a copy of the cell's genetic material is copied. Which of the following is the best conclusion you can make about the life cycle of this cell?
The best conclusion you can make about the life cycle of this cell is that the cell is in the S phase of interphase and will move next to the G2 phase.
S phase (Synthesis Phase) is the phase of the cell cycle in which all of the chromosomes (DNA) are replicated within the nucleus. During this phase, the DNA is effectively doubled as each chromosome contains two sister chromatids. After the S phase, the cell enters the G2 phase where various proteins (such as microtubules) are synthesized.
A. Of the 100 cells shown, how many are in the process of dividing?
Answer:
Can you show me a picture? I can't answer your question without being able to see a picture or a graph of some sort. Thanks!
Explanation:
