Answer:
Cell theory has 3 basic points: All living things are made of one or more cells. The cell is the smallest living thing that can perform all the functions of life. All cells must come from pre-existing cells through cellular division
☆ I HOPE ITS HELP YOU ☆AIDS is the fifth and most severe phase of HIV infection
Answer:
HIV is the virus that causes Aids
last stage is Full blown stage
I need help ASAP pleaseee :( also im in 5th grade btw
Answer:
Ok I will help you what is the problem
Explanation:
Which of these questions could BEST be answered with the methods of science?
a. How is Earth different from other planets?
b. What does it mean to be a good person?
c. Will computers make us more or less human?
Answer:
A
Explanation:
It is about planets and planets are in space.
The cell membrane of an animal cell was damaged, preventing the cell from performing one of its functions. Which cell function would be lost, and how would this loss affect the cell?
Answer:
ok so
Explanation:
If the cell membrane of an animal cell is damaged, it would lose the ability to take in nutrients and excrete wastes. This would hinder the cell's capacity to create necessary materials and maintain proper functioning. Thus, the correct option is (b).
The correct response is option (b). The transport of chemicals into and out of the cell is regulated by the cell membrane, which acts as a selectively permeable barrier. Essential cell processes like food intake and waste elimination would be impeded if the membrane were to get disrupted.
This would impede the cell's capacity to produce required components through nutrient-dependent processes like metabolism. There would be a significant negative impact on the cell's general health and function, which could result in cellular malfunction, slowed growth, and ultimately cellular death.
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an object weighs 20n it displaces a volume of water that weighs 15n what is the buoyant force on the object
Answer:
sorry dont no what u say
so bye
help ASAP due at 7:30 What explains a broken bone healing?
look at the photo
Answer:
1st one
Explanation:
DNA replace the old cells
Many biologists debate how a virus should be classified. In 2008, scientists in France discovered that a virus was capable of infecting another virus. Which theory might be supported by this information?
Answer: any virus should be classified by or what it is
Explanation:
Question 1: Some cells produce and secrete high levels of digestive proteins. Which organelles would you expect to be abundant in those cells, and why? Question 2: Explain how active transport helps a nerve cell maintain its resting potential. Question 3: The Atlantic cod is a common fish of the Atlantic Ocean that must drink seawater to meet its water needs. Explain how active transport helps the Atlantic cod maintain homeostasis with regard to the balance of sodium and chlorine ions, which are abundant in seawater. ( Will Mark Brainliest). No Nonsense Answers.
Answer:
q1 : ribosomes because they are responsible for protein synthesis
q2 : by transporting potassium ions into the cell and sodium ions out of the cell maintaining a concentration gradient
q3 : seawater contains a high concentration of sodium and chlorine ions that the Atlantic cod gets rid of by actively transporting them out of its body
A woman has two recessive alleles, this would mean that her alleles would be:
a homeozygous pair
I hope this helps!
Which type of fossil does this image depict?
A.
cast
B.
carbon imprint
C.
mineralized fossil
D.
original-tissue fossil
Answer:
this is a mineralized fossil
Explanation:
Answer:
its a cast. i took a test and got it right <3
Explanation:
NEED HELP ASAP!!!
The coordinated action of two types of myofilaments, actin and myosin, results in muscle contraction. The muscles contract as actin filaments slide over myosin filaments. When the muscle is in a relaxed state, the myosin heads are ready to bind with the actin filament. However, they are not able to bind due to
a.
the absence of ATP
b.
a high concentration of Ca++ ions
c.
blockage of the attachment site
d.
alcoholic fermentation
Answer:
I think due to absence of ATP but I'm not sure.. Actin and myosin return to their unbound state causing the muscle to relax. Alternatively relaxation (failure) will also occur when ATP is no longer available.
Myosin heads are ready to bind with the actin filament they are not able to bind due to the absence of ATP.
How two myofilaments involved in muscle contraction?Muscle contraction results from an intercommunication between the actin and myosin filaments which generate movement relative to one another.
What happens to the actin and myosin filaments when a muscle contracts?Myosin movement appear to be a kind of molecular hop. The myosin reaches forward, binds to actin, contracts, releases actin, and then reaches forward again to bind actin in a new cycle.
What happens to actin and myosin during muscle relaxation?Relaxation occurs when nerve stimulation stops. Calcium gets moved back into the sarcoplasmic reticulum shattering the link between actin and myosin. Actin and myosin then return to their unbound state causing the muscle to relax.
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What happens when the thin filament in a muscle fiber slides over the thick filaments?
Answer:
As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.
Answer:
Sliding of the filaments and shortening
Explanation:
As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.
PLS MARK BRAINLIEST
The cactus wren bird
build its nests in the
cholla cactus to help
keep its babies away
from harm. This gids
the cactus wren but
does not harm the
cactus plant.
Which symbiotic relationship is described above?
Parasitism
Mutualism
Commensalism
Coevolution
Answer:
Commensalism
Explanation:
the wren bird is benefiting but the cactus not benefiting and it isn't being harmed at all
. How much time does it take a person to walk 12 km north at a velocity of 6.5 km/h
Answer:
It will take 1.85 hours to walk 12 km north.
Answer:
Explanation:
v=[tex]\frac{d}{t}[/tex]
and the d here is the distance which is equal 12 km
the time is still unknown
and we know the velocity which is 6.5 km/h
and according to the triangle of the velocity "search that up "
t =[tex]\frac{d}{v}[/tex]= [tex]\frac{12}{6.5}[/tex]≈1.8 hours
A car is driving 75 miles per hour down the interstate and sees a wreck in the distance. The car starts slowing down, but takes a while until it completely comes to a stop. If the acceleration was 98 miles/hr2, how long did it take for the car to decelerate?
Answer:
43
Explanation:
Because we need to multiply the product
The answers are plz help
A: Lipid
B: protein
C: Glycolipid
D: Carbohydrate
Answer:
protein
Explanation:
Carrier proteins allow moves other materials within the organism.
Which of these statements describes how monomers combine and create macromolecules?
1 Nucleic acids combine to make starch.
2 Amino acids combine to make proteins.
3 Glucose molecules combine to make nucleic acids.
4 Proteins combine to make glucose.
Answer: Amino acids combine to make proteins.
Explanation:
Question 4
2 Points
Suppose the total concentration of potassium (K+) in the cell is 10 times less than the concentration of K+ in the
extracellular fluid. The cell would need to use
to move K+ out of the cell.
A passive transport
B
facilitated diffusion
C) osmosis
D active transport
Answer:
C
Explanation:
Because thex=y so a reverse review is nice to =15
what is the difference between primary and secondary active trnsport
Answer:
In primary active transport, the energy is gotten directly from the breakdown of ATP. In the secondary active transport, the energy is gotten secondarily from energy that has been stored in the form of ionic concentration differences between the two sides of a membrane
Which of the following statement is true about recombinant DNA
Answer:
It combines genes from two different organisms.
4. At night a similar event takes place (as that described in #3 above). As the sun goes down,
the air contains a certain amount of water vapor. The air then begins to cool
and eventually the air reaches the dew point. What is the dew point and what would form
at this point?
100points?
Answer:
its t0 wlsllslseopwpwooop
What hypothesis might the experimenter have been testing with this experiment?
Answer Plato:
Increased levels of carbon dioxide cause air to heat up more rapidly.
Answer:
The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded.
Explanation:
The hypothesis that the experimenter might have been testing with this experiment is increased levels of carbon dioxide cause air to heat up more rapidly.
The experimenter is likely testing whether higher concentrations of carbon dioxide in the atmosphere lead to a faster rate of temperature increase in the surrounding air. This hypothesis is relevant to the study of climate change and global warming, where elevated levels of carbon dioxide, primarily from human activities, are believed to contribute to the Earth's temperature rise due to the greenhouse effect.
In conclusion the experiment would involve exposing air samples to different concentrations of carbon dioxide and monitoring the rate of temperature increase to determine if there's a correlation between CO2 levels and heating rate.
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At what age will most adults experience decreased ROM
Answer:
between the ages of 40 and 80 years old
Explanation:
Which of the following best describes sickle-cell anemia?
O Caused by environmental factors that an individual was exposed to during pregnancy.
O A hereditary genetic mutation that causes a resistance to malaria.
O An inherited disorder that increases the risk of contracting malaria from mosquitos.
O A genetic mutation that is inherited from a dominant allele of one parent.
Answer: The answer should be B "O A hereditary genetic mutation that causes a resistance to malaria."
Explanation:
I do FLVS also you can find this out in your lesson 3.04 on page 5.
It says, "Sickle-cell disease is a genetic disorder that gives red blood cells a crescent shape instead of the typical disk shape. Sickle cells are stiff and sticky. They tend to block blood flow in the blood vessels of the limbs and organs. Blocked blood flow can cause pain, serious infections, and organ damage. This genetic disease is recessive, meaning the allele must be inherited from both parents to be expressed in a person’s phenotype. It is caused by a mutation in the gene that produces hemoglobin, the blood’s principle oxygen-carrying protein. Sickle-cell disease occurs more commonly in people and descendants from tropical and subtropical regions where malaria is common. Scientists have discovered that individuals with just one allele for sickle-cell disease are not only healthy, but they actually have a high resistance for the parasite that causes malaria. This resistance gives the carriers of one sickle-cell allele a great advantage over malaria, which claims more than a million lives each year, and explains why the allele for this dangerous genetic disease survives to be passed down to future generations."
Have a great day hope this helped!!!
:3
The sickle cell gene is inherited and results in sickle cell disease. You cannot catch HPV from an infected person because it is not brought on by whatever the parents did either before or during the pregnancy. Thus, option B is correct.
What are the characteristics of sickle-cell anemia?Red blood cells are typically disc-shaped and sufficiently flexible to pass readily through blood arteries.
Red blood cells with sickle cell disease have a crescent or “sickle” shape. Because sickle cells impede blood flow to particular organs, sickle cell disease complications can develop.
The severe side effects include stroke, acute chest syndrome, organ damage, various disabilities, and even early death. Acute chest syndrome lowers the blood's oxygen content.
Therefore, A hereditary genetic mutation that causes a resistance to malaria.
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_____ is an example of transient evidence at the crime scene on Willow Lane.
a wild dog living in the woods behind the house
the bleeding man on the driveway
a hot cup of coffee near the dead body
Answer:
a hot cup of coffee near the dead body
Explanation:
Answer:
C
hot cup of coffee
Explanation:
edge 22
How does increasing the temperature affect the random motion of molecules?
Answer:
Raising temperature increases energy, resulting in faster speed of molecules.
Explanation:
Increasing the temperature introduces more energy to the system, which will cause the random motion of molecules to increase in speed.
Hope this helps! :) Let me know if my answer doesn't make sense!
In the catabolic pathways, which two molecules are major electron acceptors
Answer:
NAD+ and FAD+
Explanation:
NAD+ and FAD+ are the electron acceptors in the breakdown pathways. As NADH and FADH2, these carriers transport high-energy electrons to the electron transport chain where the electrons power the production of ATP.
Immigration into an existing ecosystem will cause a population to increase if
the birth rate is greater than the death rate
the birth rate and death rate are balanced
the birth rate doubles and the death rate does not
the death rate is greater than the birth rate
Answer: A or C
Explanation: I just did it
How do enzymes affect the reactions in living cells?
Answer:
enzymes speed up the reaction
Explanation:
Enzymes increase the rate of biochemical reactions by reducing the amount of activation energy needed for reactants to start reacting.
Answer:
Activation energy decreases.
Explanation:
The way enzymes work is by lowering the activation energy required for reactions to take place within living cells.
Hurry plz
Biology is . . .
A. a branch of science.
B. a static branch of science.
C. not a diverse branch.
A
biology is branch of science which deals with life
Answer:
A
A branch of science
Explanation:
Biology is the study of living things(plants and animals) and their interactions with one another and the environment. It deals with the study of life