why is blood pressure an example of negative feedback?
Answer:
Regulation of blood pressure is an example of negative feedback. ... If blood pressure is too high, the heart rate decreases as the blood vessels increase in diameter ( vasodilation ), while the kidneys retain less water. These changes would cause the blood pressure to return to its normal range.
Explanation:
What is a negative feedback loop?
a closed path that tends to reduce the activity of a body system
the output of a system stimulates another cycle of the system
anything that causes a reaction or response
something that carries out a response
Answer:
I hope this helps.
Explanation:
16 An organism with a cell wall would most likely be unable to take in materials through
A) osmosis
B) facilitated diffusion
C) active transport
D) endocytosis
Answer:
endocytocis
Explanation:
how can mass help identify an unknown substance
Answer:
Explanation:
You cannot use mass to tell one substance from another.
two very different objects can have the same mass.
Please select the word in parentheses that fits the sentence:
A catalyst [weakens/strengthens] the bonds of the reactants [increasing/decreasing] the activation energy.
Answer:
Weakens and Lowers activation energy
Explanation:
please hellp asappppp In an area with very tall trees shading an understory of shorter trees, all of which have epiphytes growing on them, which of the following other conditions are most likely to exist as well?
It is near 30° latitude north or south or on the leeward side of a mountain range.
Moist air is rising over the area.
Night temperatures are much colder than daytime temperatures.
The soil has a thick layer of decomposed, nutrient-rich organic material.
There is an extremely high diversity of species in the area.
There is little rainfall and frequent fires regularly cut the vegetation to the ground.
4 and 6
1 and 3
2 and 5
3 and 4
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Which cellular process breaks down simple sugars to release energy?
O A. mitosis
O B. photosynthesis
O C. respiration
O D. waste elimination
Answer:
C. respiration
Explanation:
Describe how bacteria have become resistant to treatment.
Answer:
Explanation:
Bacteria gene will mutate and this trait will be passed along to the offspring. This allows them to withstand treatment.
A student observed a palisade cell using a microscope. The microscope had four objective lenses, each with a different magnification. Which objective lense should the student use?
Answer:
x4 objective
Explanation:
The student should use the x4 objective lense in order to be able to observe the palisade cell of a leaf.
The palisade cells are located below the cuticle and the epidermis of the leaf and the x4 objective will provide the largest field of view for adequate study by the student. The x4 objective is also easier to focus compared to the lower objectives.
5. A compound that produces hydrogen ions in
solution is a(an)
a. salt.
c. base.
b. acid.
d. polymer.
11.
12
Answer:
The answer is b
Explanation:
an acid is a compound that donates hydrogen ion
High metamorphism ( what is the metamorphic rock) ?
Answer:
I hope this helps you!
Explanation:
Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors
Answer:
Metamorphism rock is...
Explanation:
Rock that was once one form of rock but has changed to another under the influence of heat, pressure, or some other agent without passing through a liquid phase.
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In 1851, Gregor Mendel, a young monk in Europe, formed the foundation of genetics by using pea plants. In one of his experiments, Mendel crossed yellow pea seeds with green pea seeds. Much to Mendel’s surprise, all of the offspring were yellow peas.
Which of the following statements explains Mendel’s results?
A.When the two peas were crossed, the offspring received genes from both parent plants, but the genotype for yellow seed color was dominant over green seed color.
B.When the two peas were crossed, the offspring received genes from both parent plants; the phenotype for yellow peas was dominant over green pea color, which caused all the offspring to have yellow seed color.
C.When the two peas were crossed, the offspring only received the genes from the parent plant which had the genotype for yellow seed color.
B.When the two peas were crossed, the offspring only received genes from the parent plant with the phenotype for yellow seed color, which caused all the offspring to be yellow.
Answer:
It's A
Explanation: They both have gene for both of the color but the yellow pea seed gene or whatever is dominant.
The statement that best explains Mendel’s results is when the two peas were crossed, the offspring received genes from both parent plants, but the genotype for yellow seed color was dominant over green seed color. The correct option is A.
What is Mendel's law?Gregor Mendel was a scientist and botanist, and he experiments on pea plants and discovered three laws that are very helpful in genetics.
Mendel's law of segregation, "during gamete formation, every gene segregates from each other so that each gamete conveys only one allele for each gene." The second law of inheritance is the law of segregation.
Mendel's 2nd law of inheritance is also known as the law of independent assortment of genes.
It states that each character behaves as a separate unit and is inherited independently of any other character.
Therefore, the correct option is A.
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Predict the two possible outcomes if temperature or pH were changed within the molecular control system of cell division.
I'm pretty sure it's that the cells would divide more or divide less, right? Because the temp or pH change would cause some enzymes to denature, and then, depending on which ones denature, the regulation of cell division would be messed up and they would either divide too much or not enough?
Answer:
Yes, pH and temperature affects the cell division.
Explanation:
If the temperature falls between the range of 3 °C to 25 °C, the mitosis process increases but when the temperature lowers from 3 °C and exceeds from 25 °C so it decreases the rate of mitosis process because the enzymes which is responsible for the process of mitosis denatures and does not work properly. same is the case with pH, the rate of the process will increase when the pH is neutral but decreases when the pH goes lower or higher.
Two amino acids unite by forming a(n) bond between them and releasing a molecule of . The union of many amino acids forms a macromolecule called a .
Answer:
Protein/nucleic acid/Carbohydrates/lipid
The correct and most appropriate words to fill in the blanks are: peptide, water and protein.
An amino acid can be defined as a simple organic chemical compound that is made up of an acidic carboxyl group (COOH), a basic amino group ([tex]NH_2[/tex]), and a variable (unique) side chain group.
Generally, an amino acid is typically named after two (2) of its functional groups and these are:
An acidic carboxyl group (COOH): it acts like an acid.A basic amino group ([tex]NH_2[/tex]): it acts like a base.
Basically, a peptide bond is formed between two amino acids when they unite. Also, this chemical reaction lead to the release of a molecule of water.
Finally, the union of many amino acids forms a macromolecule called a protein.
In conclusion, protein is a macromolecule which is formed as a result of the union of many amino acids.
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What are atoms? What particles are they composed of? What is relative location and charge of each particle?
Explanation:
an atom is the smallest chemical particle that exists
the are composed of 3 main things
protons
neutrons
electrons
protons and neutrons are located in the nucleus of the atomic structure( centre) and electrons are in shells out of the nucleus
protons are positive charged
electrons are negative charged
neutrons don't have a charge as their charge is too small and considered as nothing so 0
1.) If a strand of DNA has 10% G, what percent will be T?
2.) If a strand of DNA has 45% A, what percent will be C?
3.) If a strand of DNA has 24% T, what percent will be G?
Which of the following statements is true regarding the vice president's role in the Senate?
In recent years, vice presidents have been less active in the Senate.
Most modern vice presidents have voted hundreds of times in the Senate.
Vice presidents will often get involved in debates being held in the Senate.
The vice president may cast a vote in the Senate whenever they chose.
Answer:
answer ...In Recent year, vice presidempnt have been less active in the Senate
Explanation:
hope It will help
Which of the following is an example of an ecosystem service that would provide protection from a hurricane storm surge?
A lock and dam system
An intact coastal wetland
An energy-producing tidal barrage system
An offshore, deep-water fish farm
Answer: An intact coastal wetland
Explanation:
Hurricane storm surges results when the water level rises above normal as a result of a storm and therefore goes inland from the coast far deeper than it normally does.
Normally this can destroy things next to the coast by washing them away but some ecosystem services can provide protection against this such as an intact coastal wetland. Being intact, there are less chances of being washed away and as it is a wetland it is used to high levels of water and can even absorb some of the surge.
What happens to the matter? How does it transform? What
are the inputs and outputs?
matter is neither created nor destroyed it only transforms
VERY EASY 7TH GRADE SCIENCE QUESTION FIRST PERSON BRAINLIEST!!!!
The final velocity minus the initial velocity divided by time is the formula for —
A. constant speed
B. ending velocity
C. average speed
D. acceleration
What is the driving force for plate tectonics?
A.Gravity slab pull
B.The gravity of the Moon and Sun
C.Heat from the Earth's core causing mantle convection
Answer:
Option C
Explanation:
Driving force for plate tectonics is the "convection in the Earths mantle" or option C. Convection is the transfer of heat due to the movement in molecules also causing hot to rise and cold to sink. Convection currents cause the tectonic plates to move because the currents rise to the Earths surface forcing the plates to drive away from each other also known as seafloor spreading.
Hope this helps
Which statement explains the role of genes in the process of inheriting a specific trait? Question 8 options: Genes are changed by the environment of a living thing and these changes effect the genes of the offspring. Genes in living things come together to make chromosomes which take information from offspring to parent. Genes absorb chemicals from the blood stream and carry them throughout the body of parents and offspring. Genes which are past from both parents carry the genetic material that determines inherited traits.
Answer:
Genes which are past from both parents carry the genetic material that determines inherited traits.
Explanation:
please help me, i dont like this
Answer:
the answer is true because plant can be infected
by parasitic
sorry if wrong
Answer:
This is true.
Explanation:
Some plants are parasitic, which means they do not make their own food. They do, however, steal necessary water and minerals from other plants, often killing the other plants off. Parasitic plants sometimes do have chlorophyll, and others do not.
Which of the following statements is true about the movement of fluid in a
convection cell?
A. Hot fluid rises because it is denser.
B. Cool fluid rises because it is less dense.
C. Cool fluid sinks because it is denser.
D. Hot fluid sinks because it is less dense.
The option that is true about the movement of fluid in a convection cell is B. Cool fluid rises because it is less dense.
What is a convection cell?It should be noted that a convection cell simply means a system where a fluid is warmed and loses density.
In this case, cool fluid rises because it is less dense. The colder and denser part of the fluid simply descends below the warmer fluid.
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find the solution to the equation
[tex] {x}^{2x} - 5x {}^{2} + 4 = 0 \\ [/tex]
What are some of our key mineral resources and what are our known reserves?
Answer: heyy
nnejdew
Explanation:
As the fruit develops, why do the petals, stamen, and sepals fall off?
A. The fruit absorbs them, which gives the fruit its color.
B. They have served their purpose and are no longer needed by the plant.
C. The material in the petals, stamen, and sepals become the skin of the fruit.
D. The flower has become dehydrated.
Answer:
A. The fruit absorb them, which gives the fruit its color
Explanation:
basta yunn
8(b)(i). Diagram 8.2 shows part of the Periodic Table. State the type of
element for P. *
Answer:
Phosphorus
Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth.
Explanation:
Brainliest?
What do these panels do?
Cell division occurs in two stages: division of the nucleus, called
Choose...
, and division of the cytoplasm, called
Choose...
.
Answer:
mitosis, cytokinesis
Explanation:
Cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
What is the significance of karyokinesis?There are many steps in cell division, two of which are important, the first is the division of the nucleus, known as karyokinesis, which is the process of nuclear division that includes replication of the genetic material and separation of the duplicated chromosomes and is important for the production of genetically identical daughter cells for growth and repair in multicellular organisms. The single cell is divided into two cells after cytokinesis, which occurs at the end of cell division.
Hence, cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
Learn more about the Karyokinesis here.
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