Answer:
To move substances against a concentration or electrochemical gradient, the cell must use energy. Small substances constantly pass through plasma membranes. Active transport maintains concentrations of ions and other substances needed by living cells in the face of these passive movements.
Explanation:
When meiosis occurs, how many chromosomes does it create?
Answer:23 chromosomes
Explanation: During meiosis only half of the 46 chromosomes are created.
An animal cell: the human body. Different but also alike. Your skin acts as the first line of defense against invaders. In this animal
cell, the
has a similar purpose.
A)
Golgi body
B
mitochondria
C
plasma membrane
D
endoplasmic reticulum
Answer:
Explanation:
C.
In this animal cell, the has a similar purpose as of skin is plasma membrane. The correct option is C.
What is plasma membrane?The membrane that basically divides the interior of the cell from the external environment is known as the plasma membrane, sometimes known as the cell membrane, and it is present in all cells.
The cell membrane isolates a cell's interior contents from its external environment, just like your skin's outer layer does for your body and its surroundings.
The cell membrane acts as a barrier to protect it and controls what can enter and leave the cell.
One of the body's first lines of defense against hazardous germs is the skin, which acts as a barrier. Skin tissue contains specialized immune cells that aid in the defense against invaders.
The skin, however, is home to a variety of communities of helpful bacteria known as the skin microbiota.
Thus, the correct option is C.
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Which factors involving the activities of people are a threat to biodiversity?
Answer:
a few factors include pollution, littering, hunting, poaching, and loss of habitat.
Compare and contrast what happens in mitosis and meiosis. A) Mitosis is imporyant for growth and repair
Answer:
Mark as Brainliest!! Please!!!!
Explanation:
The process of mitosis generates new cells that are genetically identical to each other. Mitosis helps organisms grow in size and repair damaged tissue.
7. _________________ consumers eat secondary consumers.
Which does not have scales?
amphibian
reptile
fish
Answer: amphibians
Explanation:
noice :3
1.
What is evolution?
Answer:
Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction.
Explanation:
PLEASE ANSWER ASAP WILL MARK BRAINLIEST:
A region experiences frequent landslides from heavy rains. How can the local residents lower the frequency of landslides in the region?
B. Plant vegetation on the slops that expreience landslides.
E. Reduce the sloped where landslides occur.
Hope this helped, please mark brainiest!
To resist the ____ of gravity you have to pull on an object with more force than gravity.
Answer:
Pull
Explanation:
I think it's pull I'm 80% sure
In order for a male to have
the recessive disease, what
would his genotype be?
Which of the following is an example of commensalism?
Answer:
D. A bird builds a nest in a tree
Explanation:
The action above is only benefitting thee bird but not the tree but at the same time it is not hurting the tree. This is an example of commensalism.
Rain forests are home to many of the largest animals on Earth.
True
False
Answer:
True
Explanation:
Convection occurs when heat transfers through
a.direct contact
b.electromagnetic waves
c.no particles of matter
d.fluid movement
Thermohaline circulation supplies heat to polar
Answer:
Your are correct.
Explain the process that creates wind.
Answer:
Winds are caused by differences in air pressure. Unequal heating of Earth’s surface creates areas of different pressure. Cooler areas have higher air pressure. Warmer areas have lower pressure. This causes air to move from high pressure to low pressure. This movement is the wind we feel.
Answer:
Wind is air in motion. It is produced by the uneven heating of the earths surface by the sun. since the earths surface is made of a various land and water formations, it absorbs the sun's radiation unevenly. Two factors are necessary to specify wind which is speed and direction.
Explanation:
Dinitrophenol (2,4-DNP) destroys proton gradients without affecting anything else about a membrane. Its pKa slightly acidic, so it can be protonated or unprotonated in cells.a. What would be the effect of adding dinitrophenol to the mitochondrial inner membrane
Answer:
the effect of adding dinitrophenol to the mitochondrial inner membrane is -:
Production of ATPNo electron transferproduction of more sugar as energyUncoupling of ETC(electron transport chain)Explanation:
Dinitrophenol is an uncoupler which can isolate the progression of electrons and siphoning of H+ particles for ATP Synthesis. On adding the dinitrophenol, the energy from the electron move can't be utilized for ATP blend. It has been utilized in diet pills and as a counting calories help. It goes about as protonophore and permits spillage of the protons through the internal mitochondrial layer which subsequently sidesteps ATP synthase and consequently the creation of ATP creation gets wasteful. It hinders the ATP synthase and thus its capacity to deliver ATP. It likewise influences the ETC in light of the fact that forestalls development of electrons over the ETC. Uncoupling the ETC would prompt diminished ATP creation and consequently increasingly more sugar is used as energy. This would restrict accessibility of ATP and make a deadly circumstance.
can wolfs have medicine?
Answer:
Probably if it badly hurt then you would need it otherwise i think not.
What is the gradient formula?
Explanation:
The gradient of the line = (change in y-coordinate)/(change in x-coordinate) . We can, of course, use this to find the equation of the line. Since the line crosses the y-axis when y = 3, the equation of this graph is y = ½x + 3 . To find the gradient of a curve, you must draw an accurate sketch of the curve.
please help need now
What role do glucose and oxygen play in cellular respiration? O They are reactants because they are present before the reaction. They are reactants because they are present after the reaction. O They are products because they are present before the reaction. O They are products because they are present after the reaction. reagiging
Answer:
They are reactants because they present before the reaction. Hope this helps!
Explanation:
I took the chapter test
Wombats are mammals with a gestation period of about
20 days. At birth, the baby wombat, called a joey, is tiny
and hairless. It crawls into its mother's external pouch
where it continues to develop for about eight months.
Based on this information, wombats are classified as
______mammals.
Answer:
marsupials
Explanation:
new nerve pathways are shaped by
experience
glucose
oxygen
blood
Answer:
oxygen....
Explanation:
hope this helps ✌
What type of light is trapped in the Green House
Answer:
infrared light
Explanation:
The Earth absorbs this energy from the Sun and reemits it in the form of invisible infrared light. This energy is trapped by the greenhouse effect. Greenhouse gases have various shapes that make them effective at absorbing infrared radiation emitted by Earth.
It is a light called an infrared light.
Only the light in the visible spectrum can penetrate into the greenhouse whereas incoming infrared light, which is also known as heat radiation, is blocked by the glass or plastic.
Help with these two ?
Which of the following require clear warning signs or labels? Check all that apply
The options that would clearly require the use of warnings would be:
Places where a spill was recently cleanedContainers with bodily fluidsWhat is a warning sign?This is the term that is used to refer to the signs that are placed in objects so that it would serve as precaution to the people around who may come in contact with those objects.
The goal of the warning sign is to ensure that people do not suffer un desirable consequences when they get in contact with these items which may have the potentials of causing them harm.
For instance bodily fluids that are infected may be harmful to other people hence the need to ensure that it is well protected and has all of the right labels on it.
Also area that spills have occurred may be radioactive area as and they may be dangerous to the health of persons that go near them.
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Answer:C,D
Explanation:
Explain the similarities and differences between endocytosis and exocytosis, and give an example of each.
Select the type of scientific communication that is best represented in each of the following examples.
An interactive exhibit about the human body at a science museum:
Four students working together to complete a biology laboratory experiment:
A poster presentation of a project at a school science fair:
An original research article published in a scientific journal:
A panel of scientists at a press conference answering questions about an oil spill:
A researcher at sea e-mailing the latest data to a fellow scientist at a university:
Answer:
1. Public
2. Classroom
3. Classroom
4. Professional
5. Public
6. Professional
Explanation:
Based on the given examples for scientific communication that is best represented, the answers are as follows:
1.Public
2. Classroom
3. Classroom
4. Professional
5. Public
6. Professional
Answer:
public
classroom
classroom
professional
public
professional
Explanation:
In "Close Encounters of the Bear Kind," what is the author's point of view toward bear researcher, John Hechtel?
Answer:
they are very facinating in there own way
What event might occur when favorable adaptations build up in a population over many generations?
starvation
extinction
migration
speciation
will give brainlist
Answer:
D. speciation
Explanation:
Over many generations, these favorable adaptations build up in a population. This may lead to speciation, which is the development of a new species.
What does the circulatory
and respiratory systems do?
Answer:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Explanation:
What must match between a virus and a host cell?
A)DNA= Cell DNA
B)RNA=ribosome
C)envelope proteins= cell receptors
D)blood types
Answer:
C)envelope proteins= cell receptors
Explanation:
To enter the cell, the virus must bind to receptor proteins on the cell surface It does so via its envelope proteins. When the receptors and the envelope proteins match, the virus can become engulfed into the cell.
Once it enters the cell, the hijacks the cell's transcription and translation machinery and causes the viral proteins to be expressed. The viral proteins assemble into viral particles. Eventually, the cell bursts and the viral particles are released.