When dietary intake of calcium is low, the body takes calcium from bone. when dietary intake of calcium is low, the body takes calcium from bone.
a. True
b. False?

Answers

Answer 1
I believe the answer is true
Answer 2

Calcium salts in bone represent ____ percent of all calcium stored in

the body.


Related Questions

Why are 90% of sexually ambiguous newborns assigned to the category of "female" in societies with advanced medical technology?

Answers

All humans start off as female, and only develop male characteristics later in the growing stages. If a newborn is not totally male, it is therefore "female", since that's the "default state". This is also why males have useless nipples.

PLZ HALP!!! What happens during interphase that allows the two resulting cells to be the same as the original cell?

Answers

The cells DNA is copied and so two identical daughter cells are made

Answer:

Inter phase is the resting phase between two cell cycles

Explanation:

The inter phase is the longest phase in the life cycle of a cell and is also known as resting phase of the cell in which the cell performs the following activities -

a) Cell acquire nutrients

b) Cell creates proteins and other molecules and uses them

c) Cell also starts replicating DNA molecule

c) Cell starts preparing for the process of cells division

There are three stages in a cell cycle -

a) Gap 1 phase

b) Synthesis phase

c) Gap 2 phase

The major function of inter phase is to prepare cell for cell division.

Why is cellular respiration important to the biosphere?

Answers

Because it helps living things that cannot create its own energy get energy

In gluconeogenesis, during the postabsorptive state, amino acids and ________ are converted to glucose.

Answers

The answer is Glycerol

Hope this helps

List two ways that the cell moves things by active transport

Answers

Oxygen, food molecules, and waste products all must pass through the cell membrane. Substances that can move into and out of a cell do so by one of three methods: diffusion, osmosis, or active transport.

Which statement describes the role of the organism indicated by the blue arrow in the food web?

A. A primary producer that recycles organic molecules from sunlight
B. A secondary consumer that obtains its energy from the consumption of animals
C. A primary consumer that obtains its energy from the consumption of animals
D. A secondary consumer that recycles organic molecules by breaking them down

Answers

B. A secondary consumer that obtains its energy from the consumption of animals.

The red-tailed hawk is a secondary consumer because it feeds itself on primary consumers (those that eat plants, herbivores). Secondary consumers, by definition, obtain their energy from eating other animals. Secondary consumers are also usually the ones that stand on the second and above rows of a food chain, being the plants at the bottom and the primary consumers just above the plants.

Answer:

B. A secondary consumer that obtains its energy from the consumption of animals.

Explanation:

The red-tailed hawk is a secondary consumer because it feeds itself on primary consumers those that eat plants, herbivores. Secondary consumers, by definition, obtain their energy from eating other animals. Secondary consumers are also usually the ones that stand on the second and above rows of a food chain, being the plants at the bottom and the primary consumers just above the plants.

Jake wants to enrich the nitrogen content of his soil through fixation. Which crop can he use for this purpose?

Answers

Answer:

Alfalfa

Explanation:

One difference between mitosis and meiosis is:

A. Mitosis produces cells genetically identical to the parent cell, but meiosis does not

B. Mitosis produces more daughter cells than meiosis

C. Mitosis produces haploid cells, but meiosis produces diploid cells

D. Mitosis requires only one parent cell, but meiosis requires two parent cells

Answers

I think that both A and B are true

        Mitosis divides a parent cell into two identical daughter cells, each of which has the same amount of chromosomes. Meiosis, on the other hand, creates four distinct daughter cells, each of which has half as many chromosomes as the parent cell.

Answer : A, B

Does mitosis result in cells that are exactly like the parent cell?

      Daughter cells that are genetically identical to their parent cells are created during mitosis. The cell divides its copied chromosomes equally to ensure that each daughter cell has a full set before copying, or "replicating," its chromosomes.

      A single cell divides into two identical daughter cells during the process of mitosis (cell division). facts Describe meiosis. A single cell splits twice during the meiotic process, resulting in four cells with half the original genetic material.

     Despite being all haploid, the gametes created during meiosis are not all genetically identical.

        The nuclei produced from meiosis are not genetically identical and they carry one chromosomal set only. This is half the number of chromosome sets in the initial cell, which is diploid.

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What product of the preparatory phase of glycolysis is required in the payoff phase, but at twice the concentration?

Answers

ADP - Adenosine diphosphate, morevoer known as adenosine pyrophosphate, is an vital natural compound in metabolism and is fundamental to the stream of energy in living cells. ADP comprises of 3 critical auxiliary components : a sugar spine connected to adenine and two phosphate fortified to the 5 carbon atom of ribose.

What biodiversity restoration method can biologists follow to increase the density of trees and the canopy thickness in an area to recreate suitable habitats for wildlife and fight climate change?

biological augmentation

bioremediation

canopy fogging

hotspot protection

reforestation

Answers

Reforestation is a biodiversity method that can increase the biodiversity by replanting with trees. Reforestation will help forest recuperate from logging, rest fires and human abuse. Replanting trees will increase the density and variety of the trees and by doing so, wildlife will also increase. Although reforestation is a common approach to relive forest, forest management is still needed to maintain the endemic or native species.

Answer:

The Correct Answer is "Reforestation".

Explanation:

Reforestation is the genuine and intentional method of re-establishing remain forests that have been decreased by various human and natural activities such as deforestation and natural calamities.Reforestation develops the quality of human life by drenched up pollution and dust from the Air.Scientist and biologists use the reforestation method to increase the density and thickness of the trees and also plant more and more trees.

Difference between ancestral and derived traits

Answers

Primitive traits are those inherited from distant ancestors. Derived traits are those that just appeared (by mutation) in the most recent ancestor -- the one that gave rise to a newly formed branch. Of course, what's primitive or derived is relative to what branch an organism is on.

Hippocampal cells that become active only when the subject is in particular locations are called spot cells. location cells. complex cells. place cells. simple cells.

Answers

The answer is place cells

What cell parts are found only in plant cells? What are found only in animal cells? Use complete sentences.

Answers

Answer:

Plant cell parts are cell wall, chloroplast.  Animal cell parts are centrosomes and lysosomes.

Explanation:

Animal and plant cells are eukaryotic cells but still shows many structural differences.

Plant cells contain chloroplast because they perform the process of photosynthesis. Animal cells lack chloroplast. Cell wall is present in plant cells and absent in animal cells.

Animal cells have centrosomes that helps in the formation of spindle fibers,. Lysosomes perform the process of cellular digestion in animals.

Thus, plant cells have cell wall and chloroplast whereas animal cells have lysosomes and centrosomes.

Cell parts which are found only in plants cells include the

following:

Cell wallChloroplast.  

Cell parts which are found only in animals cells include the

following:

CentrosomesLysosomes.

What are Organelles?

These are regarded as cell parts which are involved in various

activities in the cell.

Plant and animals have different cell parts as listed above due

to different biochemical activities which takes place within them

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The ______________ is the part of the brain that regulates breathing, heart rate, blood pressure, and reflexes.

Answers

Medulla is the part of the brain that controls breathing, heart rate, blood pressure and reflexes.

Final answer:

The brainstem is responsible for the regulation of numerous vital functions, including breathing, heart rate, and blood pressure, with the medulla, in particular, overseeing these processes.

Explanation:

The brainstem is the part of the brain that regulates breathing, heart rate, blood pressure, and reflexes. This hindbrain structure controls automated processes critical for life, connecting the brain with the spinal cord. Within the brainstem, the medulla specifically oversees vital unconscious functions such as breathing, blood pressure, and heart rate. The brainstem also includes other parts like the midbrain and the pons, which together support a range of automatic functions necessary for our survival.

Changes in a person's height and weight during middle adulthood are accompanied by a decline in

Answers

Most people become aware of the changes in their bodies related to the aging process during middle adulthood.
Changes in a person's height and weight during middle adulthood are accompanied by a decline in strength.
Most people lost, on average, 10% of their maximum strength at age of 60.

Which action in the biology laboratory would be most likely to result in an accident?

Answers

Mixing chemicals that you are not familiar with an horseplay

Answer:

C,throwing a test tube at another student

Explanation:

Vacuoles are ________. manufactured by ribosomes found only in plant cells composed of microtubules membranous sacs

Answers

Final answer:

Vacuoles are membranous sacs present in eukaryotic cells and are involved in storage and transport. They are distinct from ribosomes, which are not membrane-bound and are involved in protein synthesis. Vacuoles are prominent in plant cells but are also found in animal cells, albeit smaller and less permanent.

Explanation:

Vacuoles are membranous sacs essential for the storage and transport of substances within eukaryotic cells. They are enclosed by a single membrane and vary in function from one cell type to another. In plant cells, vacuoles play several roles, including maintaining turgor pressure, storage of nutrients, and waste products, and can contain enzymes that break down macromolecules. In contrast to vesicles, vacuole membranes do not fuse with other cellular membranes. Although vacuoles are present in some animal cells, they are more prevalent and larger in plant cells, often consolidating into a single large central vacuole as the plant cell matures.

Ribosomes, another cellular component often mistaken with vacuoles, are the sites of protein synthesis. However, unlike vacuoles, ribosomes are not membrane-bound and are composed of ribosomal proteins and RNA. They can be found attached to the endoplasmic reticulum or floating freely within the cytoplasm. It's clear that vacuoles are not manufactured by ribosomes, nor are they composed of microtubules. They have specialized functions that are crucial for the cell's viability and operation.

Many dogs bark when unknown individuals approach their house. what type of interaction is this?
a. mutualism
b. predation
c. symbiosis
d. competition please select the best answer from the choices provided

Answers

The answer is It's D: Competition

Answer: The correct answer is- d. competition.

Competition can be described as a biological interaction between individuals belonging to same ( intraspecific) or two or more different species ( interspecific) for territory, food, and other resources.

Dogs bark at unknown individuals, when they approach their house. By this behavior, they exhibit defense for their territory. This behavior is exhibited  because  dog is fearful and perceives strangers as a threat to their territory.  

Thus, option d) is the right answer.

How are hazards identified during mission planning?

Answers

During mission planning, hazards are identified by the applying mission, enemy, terrain, troops, time and civilians framework.
This framework is usually referred to as METT-TC.
This framework is set to help military commander prioritize what they need to analyze during the planning of a mission.
Usually the civilian analysis is considered when the mission is to take place in an urban terrain.

Final answer:

Hazards are identified in mission planning through a process known as risk assessment, comprising of identification of hazards, assessment of risk, development of controls and evaluation of control effectiveness, with continuous evaluation ensuring effective hazard management.

Explanation:

Hazards are identified during mission planning through a process known as hazard analysis or risk assessment. This involves reviewing all aspects of the mission, including its objectives, resources, and environmental conditions. It consists of four key stages: identification of hazards; assessment of risk; developing controls; and evaluation of control effectiveness.

For instance, if the mission is launching a satellite into space, potential hazards might include equipment failure, adverse weather conditions, or human error. Each of these risks is assessed in terms of its potential impact on the mission and the likelihood of its occurrence. Controls are then developed to help mitigate these risks, such as double-checking equipment, checking weather forecasts, and providing thorough training to all personnel involved.

Throughout this process, continuous evaluation is conducted to ensure that all identified hazards have been effectively managed, and the mission can be carried out safely and successfully.

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An episodic narrative involves parts which are not closely interrelated.

Answers

An episodic narrative, it is only connected by time and place of unrelated characters as well as it also tell us that life can be tell us a meaningful story. The narrative point of view gives a sense of feeling in the storytelling. A series of interconnected scenes.

HELP ENVIRONMENTAL SCIENCE!!!!!!!!!!!
What was the most important result of the meireki fire of 1657 in edo?

a) it decreased the population of the city, thereby reducing timber demand
b) it cleared large tracts of the city for agriculture
c) it caused the ruling class to realize the dangers of deforestation
d) it decreased competition between the daimyos for resources

Answers

i believe the answer is c)

Option C i.e It caused ruling class to realize dangers of deforestation is the correct answer.

Meireki fire of 1657 in Edo caused huge loss of lives and two-third of the city got completely destroyed.

The most important result of the fire was that the ruling class realized the dangers of deforestation and began to make laws for the protection of forests and trees.

The simplest structured unit of a compound is a(n):
electron
atom
proton
molecule

Answers

the answer is molecule
An atom, all are made of atoms, which means atom is the smallest, simplest.

Each day, Earth receives 10,000 times the total energy used by all human beings. The source of this energy is _____. the sun cosmic rays the moon ocean tides

Answers

The sun is the answer

Answer:

The correct answer is the sun.

The sun is the ultimate source of energy of a food chain. This energy is trapped by the green photosynthetic plants under the process of photosynthesis.

Plants only absorb 2-8% of the PAR (photosynthetically active radiation- 400 700 nm) fallen on earth.

In addition, only 10% of the energy is transferred from one trophic level to the next one and rest 90% is dissipated in metabolic process or heat.

It is the reason that earth receives 10,000 times the total energy used by human beings as we are present on I and II trophic levels in a food chain.

Why does sexual reproduction result in more genetic variation than asexual reproduction?

Answers

Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. ... Each resulting cell, or gamete, resulting from meiosis has only half the amount of DNA as the parent cell.

What characteristics of organisms older than 540 million years ago makes fossils?

Answers

I'm not exactly sure what makes fossils but they used to not have hard bodied organisms they were soft.

Calcite and aragonite minerals that constitute clam shells are examples of which method of mineral formation?

Answers

The answer is biomineralization, which occurs when minerals are produced by living organisms. This often provides more protection due to the hardening of natural tissue in the organism. In mollusks and clams, the the biomineralization process that forms the shell can make it 3,000 times stronger than the individual minerals.

The correct method of mineral formation for calcite and aragonite minerals that constitute clam shells is biogenic precipitation.

Biogenic precipitation is a process where minerals are formed as a result of biological activity. In the case of clam shells, the organism (clam) extracts calcium and carbonate ions from the surrounding water to form the minerals calcite and aragonite, which are both calcium carbonate (CaCO3) but have different crystal structures. These minerals are then deposited in an organized manner to create the hard, protective shell of the clam. This biological process is a key example of biomineralization, where living organisms produce minerals that often have specific functions, such as providing structure and protection.

The majority of damage caused by volcanoes is from lava flows. T or F

Answers

True.
The most damage created by the volcano is caused by lava flows, as it destroys everything in its path (with high amount temperature). 
i believe that statement is false.
The majority of damage caused by volcanoes is caused by earthquake,  toxic gas and its volcanic ash. Indeed technically lava would be the most destructive, but it rarely came in big volume and usually only cover the small area near the volcanoes.
The volcanic earthquake, ash and the gas on the other hand, could cause damage even to towns that exist miles apart from the volcanoes.

Assume all organisms scale isometrically. let l and m denote the length and body mass of an individual, respectively. as cross-sectional area of a muscle is proportional to _______ and l is proportional to _______, we have that strength is proportional to _____.

Answers

Assume all organisms scale isometrically. Let L and M denote the length and body mass of an individual, respectively. As cross-sectional area of a muscle is proportional to L2 and L is proportional to M1/3, we have that strength is proportional to M2/3.

As cross-sectional area of a Muscle is proportional to __L2_____ and l is proportional to __M1/3_____, we have that strength is proportional to __M2/3.___.

Isometric scaling

Isometric scaling is the preservation of proportional relationships even as size of organisms changes through growth

Since it is assumed that all the organisms scale isometrically and also Given that L denotes the length and m denotes body mass of an individual the cross-sectional area of a muscle is proportional to L2 while I is proportional to M1/3 and the strength will be proportional to M2/3.

Hence we can conclude that As cross-sectional area of a Muscle is proportional to __L2_____ and l is proportional to __M1/3_____, we have that strength is proportional to __M2/3.___.

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Chlorophyll b absorbs in green wavelengths of light that chlorophyll a cannot absorb. in this respect, chlorophyll b acts as

Answers

It acts as an accessory pigment! Hope this helps! Also sorry that it took 11 hrs. for people to answer! =)

Chlorophyll b is an accessory pigment. Chlorophyll a is an essential pigment.

What are essential pigments?

The range of wavelengths that a pigment absorbs is known as its absorption spectrum. The absorption spectra of three important pigments involved in photosynthesis—chlorophyll a, chlorophyll b, and -carotene.

Chlorophylls come in five main categories: chlorophylls a, b, c, and d, as well as bacteriochlorophyll, a similar chemical found in prokaryotes. The two primary photosynthetic pigments in plants are chlorophyll a and chlorophyll b. Blue and red wavelengths are absorbed by chlorophyll molecules.

Therefore, Chlorophyll b is an accessory pigment. Chlorophyll a is an essential pigment.

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Seismic waves and water can weaken soil, causing it to move. This is called _____.

A.flooding
B.liquefaction
C.seismic shifting
D.earthquake erosion

Answers

this is called LIQUEFACTION

The correct answer from these choices is liquefaction.

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