If a person has a blood-calcium (Ca) level of 8 mg/100 mL of blood, which of the following
mechanisms does the body use to maintain blood-calcium homeostasis?
A The kidneys take up more Ca? and release vitamin D.
B The bones release Ca?
C The intestines increase reabsorption of Ca?
D All of the above

Answers

Answer 1

Answer:

The kidneys take of up more Ca2+ and release vitamin D. The bones release Ca2+. The intestines increase reabsorption of Ca2+.


Related Questions

If your body gets too cold, then your muscles start to shiver, which helps raise body temperature *

True or False?

Answers

Answer:

True

-----------------

Because skeletal muscles to bring about rapid contractions that generate heat.

Which molecules are carried in the blood?

Answers

Plasma Transporting carbon dioxide, digested food molecules, urea and hormones; distributing heat
Red blood cells Transporting oxygen
White blood cells Ingesting pathogens and producing antibodies
Platelets Involved in blood clotting

Answer and Explanation:

Oxygen molecules and sugar molecules, I think. I could be wrong..

as distance between two objects increase (gets bigger) the pull of gravity..

A. decreases

B. stays the same

C. increases

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Answers

Answer:

 A. decreases

Explanation:

Since gravitationalforce is inversely proprtional to the distance by the formular F = GM1M2/r^2.

asexual reproduction involves two-parent organisms
true or false

Answers

False, it includes 1 parent and produces a offspring as it’s asexual

The population change equation is Population Change = (Natality - Mortality) + (Immigration - Emigration). Which equation would create stable population?(1 point)

natality + immigration = mortality + emigration

natality + immigration = mortality - emigration

natality + mortality = immigration + emigration

natality - immigration = mortality + emigration

Answers

Question: "The population change equation is Population Change = (Natality - Mortality) + (Immigration - Emigration). Which equation would create stable population?"

Answer: "The equation that would best create a stable population would be natality - mortality = immigration - emigration. Hope this helps!"

Population Change = (Natality - Mortality) + (Immigration - Emigration), with the best equation being "natality + immigration = mortality + emigration," with natality being the birth rate and mortality being the death rate (first equation).

What is the significance of the population change?

Population change is significant as it explains the growth of the population and shows the pattern of the growth and the stability of the population. It represents a population that is in a state of balance and this balance is only achieved in the population when the number of people being born (natality) is equal to the number of people dying (mortality) and the number of people entering the population (immigration) is equal to the number of people leaving the population (emigration).

Hence, population Change = (Natality - Mortality) + (Immigration - Emigration), with the best equation being "natality + immigration = mortality + emigration," with natality being the birth rate and mortality being the death rate (first equation).

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how is an organism modified ?

Answers

Answer: genetic engineering

Explanation

Genetic engineering is the modification of an organism's phenotype by manipulating its genetic material. Some genetic engineering uses the principle of recombination. Recombination is the process through which a new gene is inserted into a bacterial DNA "The plasmid".

1. What does each unit on the y-axis represent?
Please please help

Answers

i’m pretty sure it is A

Answer:

A

Explanation:

The y axis is the vertical area and we can see 0-250-500- so on

as well as the small chunk of text saying popula-

A gummy bear was left in a beaker of distilled water overnight. The gummy bear on the left was the original gummy and the gummy on the right was the resulting bear.
Explain what happened to the volume of the gummy bear that was left in distilled water. Use CER format to construct your answer.

Answers

Answer: The tap water contains impurities that the gummy bear was already at an equilibrium with. Therefore, if it is placed in distilled water; it would be placed in a hypotonic solution. This would cause it to swell even more and become more fragile.

Explanation:

The Gummy Bear has a partially permeable coating that allows water molecules to pass through while blocking larger molecules. Water molecules move into the bear in this osmosis experiment, enlarging it.

What is endosmosis?

Endosmosis is the movement of water within cells when placed in a hypotonic solution. Water movement causes the cell to swell.

The swelling of the cells is caused by endosmosis. Exosmosis occurs when cells are placed in hypertonic solutions, resulting in cell shrinkage.

Isotonic solutions have a similar water potential to the cytoplasm, so neither endosmosis nor exosmosis occurs.

The mobility of solvent into the cell is referred to as endosmosis. The progression of solvent out of the cell is known as exosmosis.

The solvent flows from the extracellular environment into the cell. The solvent flows from the cell into the surrounding solution.

Thus, the process of endosmosis will occur in the given situation that causes that bear to swell.

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To which group does this worm belong?​

Answers

Insects I believe because worms are insects

Answer:

answer is segmented

Explanation:

i just answered that

Identify the whether the following types of adaptations are behavioral or physical
A stick insect has slender, dull colored body and resembles
a twig. It is extremely slow in its movements. It conceals
itself in small twigs of plants in order to protect itself from
predators.

Answers

Answer:

A. Physical adaptation


13. What type of energy does the plant use to convert CO2 and H20 into sugar?

Answers

Answer:

light energy

Explanation:

Answer:

It's light energy.

Explanation:

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Charles Darwin took a five-year voyage around the world observing different
organisms and their adaptations. Darwin concluded that change was happening ever
so slightly in organisms, until eventually leading to a new species. What form of evolution was Darwin describing?

Answers

Answer:

Natural selection.

Explanation:

Natural selection is when organisms who are most adapted to their environment survive and pass on their genes while those with "unfit" genes die and don't get the chance to reproduce! This slowly creates a population that is most well suited to their habitat. Hope this helps again LOL! :)

One characteristic of an El Niño event is _____.

a. thermohaline circulation ceasing in the Pacific
b. formation of Antarctic Bottom Water ceasing
c. low atmospheric pressure intensifying over the eastern Pacific
d. downwelling occurring in the central Pacific
e. high atmospheric pressure intensifying over the eastern Pacific

Answers

Answer:

During an El Niño event, the surface waters in the central and eastern Pacific Ocean become significantly warmer than usual. ... It also reduces the upwelling of cooler, nutrient-rich waters from the deep—shutting down or reversing ocean currents along the equator and along the west coast of South and Central America.

Explanation:

Which of the following events occurs directly AFTER a DNA molecule is unzipped?

Answers

Answer:

DNA replication occurs through the help of several enzymes. These enzymes "unzip" DNA molecules by breaking the hydrogen bonds that hold the two strands together. Each strand then serves as a template for a new complementary strand to be created. Complementary bases attach to one another (A-T and C-G).

Explanation:

Which of the following events occurs directly after RNA polymerase recognizes the transcription start site of a gene? the DNA strand begins to unwind, separating the two strands.

:D Hope it is helpful

Original DNA strand: ATT GAG CC Mutated DNA strand: ATT GAG CT What type of mutation does the example above demonstrate?

Original DNA strand: ATT TGA GCC
Mutated DNA strand: ATT TGA GAC C
What type of mutation does the example abo w demonstrate?​

Answers

the first mutation is substitution and the second is deletion

The examples above demonstrate a substitution mutation.

A substitution mutation is a type of mutation that occurs when one nucleotide in the DNA sequence is replaced by another nucleotide. In the first example, the original DNA strand has the sequence "ATT GAG CC," but in the mutated DNA strand, the nucleotide "C" is replaced with "T" at the third position, resulting in "ATT GAG CT." This single nucleotide substitution is a specific type of substitution mutation known as a missense mutation.

In the second example, the original DNA strand has the sequence "ATT TGA GCC," but in the mutated DNA strand, the nucleotide "C" is replaced with "A" at the sixth position, resulting in "ATT TGA GAC C." Again, this is a substitution mutation where a single nucleotide is replaced by another.

Substitution mutations can have different effects on the resulting protein. In some cases, the change in the DNA sequence may lead to the production of a different amino acid during translation, which can alter the structure and function of the protein. Depending on the specific location and nature of the substitution, it can have varying impacts on the phenotype and may or may not result in a noticeable change in the organism.

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An investment in labor helps a business increases productivity by

Answers

Answer: Providing more tools to make goods more quickly, thereby increasing the output.

A cactus plant, a snake, and a hawk can be members of the same

A- community
B- kingdom
C- population
D- species

Answers

i think it would be a-community

A cactus plant, a snake, and a hawk can be members of the same called community.

What is community ecology?

Community ecology is an expanding and wealthy subfield of ecology. Ecologists examine the factors that impact biodiversity, community system, and the disbandment and surplus of species.

These characteristics include relations with the abiotic world and the diverse array of interactions that occur between species.

Thus, a cactus plant, a snake, and a hawk can be members of the same called community.

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aa
6. The distance north or south of the equator is called

Answers

Answer:

Explanation:

Latitude is the correct answer

Answer:

Latitude is the measurement of distance north or south of the Equator. It is measured with 180 imaginary lines that form circles around the Earth east-west, parallel to the Equator. These lines are known as parallels

Explanation:

hope it helps:)

what is the name of the process used to make ATP by cells that have no oxygen available?

Answers

Answer:

glycolysis ( anaerobic respiration)

Explanation:

Hey I am doing school and need someone to talk to

Answers

Answer:

focus on your work

Explanation:

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ANSWER THE QUESTION WHERE IT SAYS "APPLY IT"

Answers

Answer:

Having a cold makes me feel like i cant breath because my nose is stuffy, and  i dont want to talk because my throat is itchy.  I also feel very tired, like i haven't slept in days. A cold messes with your sense of smell a lot.

Explanation:

hope this helps :)

yes, having a cold made me feel very unmotivated to do anything it also made me feel tired and irritated. Old affected my body because it made me tired and it made my head hurt, it also made my nose stuffy. this could also trigger your breathing.

how does mitosis take place in the digestive system, discuss each phase of Pmat aswell (please help)

Answers

Answer:

Intestinal cells have to be replaced as they wear out; yeast cells need to ... These phases occur in strict sequential order, and cytokinesis

Explanation:

PMAT= prophase, metaphase, anaphase, telophase.

PLEASE HELP I AM NOT GOOD AT SCIENCE

Which of these Earth systems interact when a volcanic eruption produces a large amount of smoke?

geosphere and cryosphere
geosphere and atmosphere
hydrosphere and biosphere
hydrosphere and cryosphere

Answers

Answer:

Geosphere and atmoshphere

Explanation:

HELP PLEASE
How does the flow of weathered and dissolved rock material towards the ocean affect the chemical composition of the ocean?

A.
The pressure of the water is decreased

B.
The pressure of the water is increased

C.
The salinity of the water is increased.

D.
The salinity of the water is decreased

Answers

C. the salinity of the water is increased

The salinity of the water is increased does the flow of weathered and dissolved rock material towards the ocean affect the chemical composition of the ocean. So, the correct option is C.

What is the Chemical composition of Ocean?

Understanding the chemical properties of the ocean is essential because the marine environment supports the greatest abundance of life on Earth, whose life is largely composed of the same chemicals that make up seawater and salts.

The two important elements in sea water, after oxygen and hydrogen, are sodium and chloride where sodium and chloride combine to form the salt we know as table salt. The salinity of sea water is expressed as the ratio of salt (in grams) to liters of water.

Thus, the salinity of the water is increased does the flow of weathered and dissolved rock material towards the ocean affect the chemical composition of the ocean. So, the correct option is C.

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The reason the lactase gene is made is due to ?

Answers

Answer: milk is present in the digestive system, which turns on the gene for lactase.

Explanation:

How is the production of NADPH useful for the process of photosynthesis?

Answers

The NADPH produced in the light-dependent stage of photosynthesis provides the chemical energy to fuel the Calvin cycle and keep it going

The Calvin cycle is maintained and powered by the NADPH generated during the light-dependent stage of photosynthesis.

What is the role of NADPH is the photosynthesis?

From the thylakoid to the stroma, NADPH moves. It is a high-energy electron carrier that transports both high-energy electrons and the hydrogen needed to make sugar.

NADPH will go to the Calvin cycle, where its electrons will be used to convert carbon dioxide into carbohydrates. ATP is the other component required by the Calvin cycle, and the light reactions also supply this.

NADPH is created during photosynthesis by using light energy in the chloroplasts' electron transport chain.

The Calvin cycle and subsequent processes that result in the production of carbohydrates can subsequently utilize it as a form of energy currency.

Therefore, the production of NADPH useful for the process of photosynthesis.

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What did Walter Sutton observe about the relative numbers of chromosomes in the body cells and sex cells of grasshoppers?

Answers

Answer:

Sutton observed that sex cells half the number of chromosomes as boy cells.

Explanation:

Which effect of pollution does the photograph show?

Answers

It would be Eutrophication

Answer:

C. Eutrophication

Explanation:

Think back to the last lesson we covered. What is the difference between revolution and rotation of a planet?

Answers

Answer:

Revolution refers to movement around another object whereas rotation refers to the spinning of an object.

Explanation:

Revolution is defined as the movement of one object around another object whereas rotation is defined as the spinning of an object about its own axis. In revolution the object moves from one place to another around another object while on the other hand, in rotation the object does not moves from one place to another but rotates at one place.

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Which solution is hypotonic?

Which solution is hypertonic?
A) the inside of the cell
B) Neither
C) both
D) the beaker

Answers

Hypotonic - the inside of the cell
Hypertonic - the beaker

Answer:

D I believe I could be wrong

Explanation: Hypertonic solution: A solution that contains more dissolved particles (such as salt and other electrolytes) than is found in normal cells and blood.

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