Compact bone contains cylinders of calcified bone called ______________________. These cylinders consist of 4 to 20 Compact bone contains cylinders of calcified bone called concentric rings of bone known as:___________________.
a. osteons, canaliculi
b. lamellae, canaliculi
c. osteons, lamellae
d. Haversian canals, lamellae
e. none of the above

Answers

Answer 1

Answer:

The correct answer is c. osteons, lamellae

Explanation:

An osteon is the basic functional unit of the cortical bone of a tubular bone. An osteon consists of a central canal that contains two vessels of Havers. Concentric bony laminae are arranged around this canal. These lamellae consist of bone cells and the surrounding base substance. Between the Havers canals there are Volkmann canals that connect the Havers canals. The construction of the cortical bone in these functional units has not yet been fully clarified. In general, it is assumed that these structures serve primarily to deliver tissue and signal transduction. This structure is also supposed to serve the stability and adaptability of the bone.


Related Questions

4. How did the pH of the water affect the hatching of the brine shrimp?
I

Answers

Pure water is supposed to have a pH very close to 7,solutions with a ph of less than 7 are acidic and solutions with a ph greater than 7 are basic ,ph can have an effect on the growth of growing organisms such as brine shrimp,eggs can last years on dry land but when added to water they hatch within 12hrs.
Hope this helps!

This stage of cellular respiration requires the presence of oxygen.
A. anaerobic respiration
B. glycolysis
C. fermentation
D. aerobic respiration

Answers

Answer:

Aerobic Respiration

Explanation:

Aerobic (in the presence of oxygen)

Anaerobic (absence of oxygen)

Glycolysis (central pathway for glucose{sugar} metabolism)

Fermentation (chemical breakdown of a substance by bacteria, yeast or other microorganisms and the escape of gases and heat)

T the answer would have to be A

what molecules from proteins when linked together with covalent bonds

Answers

Answer:

Amino Acids

Explanation:

they link with each other through means of peptide bonds and as a result form proteins

What is the reason for the increased number of drug resistant bacteria being found in hospitals?

Answers

Answer: This rise is related to their natural resistance to most commonly used antibiotics and their capacity to acquire resistance to other antibiotics either by mutation (penicillins) or by transfer of resistance genes on plasmids and transposons (aminoglycosides and glycopeptides).

Explanation:

if some can help me with my biology final the whole 25

Answers

Answer:

add the answers if you dont know

Explanation:

Answer:

KC is looking at cells in biology class, but he doesn't know where they came from. He sees that the cells under his microscope have cell walls and chloroplasts. Therefore, KC is likely observing cell from:

A leaf that got blown onto the floor.

Plant cells are the only cells w/ chloroplast!

Explanation:

pick me as the brainliest

Scientists have names for more than 30 types of snow crystals.

Answers

Answer:

it's false there are only five types of snow crystals

False I looked it up on goggle and it said that only 7 snow crystals are known

HELPPPPPP ASAPPPPPPPP HELPPPP

Answers

Little to no agitation I’m pretty sure

Answer:

it is C. Little to No agintation

Which of the following are solutions to slow down groundwater depletion?

a -Landscape with native plants

b- promote the use of water resources

c- encourage population growth

d- develop crops that require more water

Answers

It could be d- or b-

1 point
A man with type A blood marries a woman with type AB blood. Based on
what you know about blood types, what is the only blood type not possible
in any of their children? (remember, the 4 types are A, B, AB, and O)*
A
B
AB
0

Answers

They can't have a child with blood type O(I) because one of the parents has blood group AB(IV)

Often in laboratory experiments you will want to amplify regions of the genome from several different preparations of gDNA. To do this, a mastermix will be created with all the common reagents to ensure easier pipetting, proper mixing, and controlling for variations in pipetting. Create a mastermix for running 8 identical reactions, including one negative control, each with different gDNA templates (7 total gDNA templates).

Answers

Answer:

Mastermix in PCR helps in providing faster and easier setup with pipetting, proper mixing, reduction in contamination and controlling fir variation in pipeting or tube to tube variability. Contents of PCR master mix for the desired reaction are as follows:

dNTPsPrimersthermostable DNA polymerasecofactor (MgCl2)Template DNA (for 7 samples)PCR-grade water

The only difference in negative control for the PCR master mix is template or the different primer rest the components are the same in the master mix.

PART II
Direction: Write the symbols of some elements and the group number it belong to
Name
Symbol
Group Number
Iron
Silver
Mercury
Oxygen
Gold
Potassium
Xenon
Magnesium
Hydrogen

#pa help po

Answers

Answer:

Iron -> Fe - Group 8

Silver -> Ag - Group 11

Mercury -> Hg - Group 12

Oxygen -> O - Group 16

Gold -> Au - Group 11

Potassium -> K - Group 1

Xenon -> Xe - Group 18

Magnesium -> Mg - Group 2

Hydrogen -> H - Group 1

Which of the following engulfs pathogens or an invading virus or bacteria
-t cell
-b cell
-macrophage
-red blood cell

Answers

Answer:

Macrophage

Explanation:

They do this through a process called phagocytosis

The following engulfs pathogens or an invading virus or bacteria - macrophage.

Macrophagea type of white blood cell of the immune systemengulfs and digests pathogens, an invading virus or bacteriait recognizes anything that does not have, on its surface, proteins that are specific to healthy body cells.surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells.

Thus, The following engulfs pathogens or an invading virus or bacteria - macrophage.

Learn more:

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Would the movement of oxygen through the cells?

Answers

Answer - The oxygen molecules move, by diffusion, out of the capillaries and into the body cells. While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries. Carbon dioxide is brought, through the blood, back to the heart and then to the lungs.

Did the medical assistant have the syringe properly positioned

Answers

Answer:

the medical assistant could have positioned the syringe wrongly, as it could have been the one causing pain and irritation, and it was vital to confirmed..........

Assume it takes Venezuela 3 hours to produce a batch of apples and 7.5 hours to produce a batch of pumpkins, and it takes the United States 3 hours to produce a batch of apples and 8.5 hours to produce a batch of pumpkins. Which nation has an absolute advantage in producing pumpkins?

Answers

The nation with an absolute advantage in the production of pumpkins would be Venezuela.

In economics, absolute advantage refers to the ability of an entity to produce a good or service at a lower cost/time per unit given the same resources as another entity.

In other words, given the same quantity of input and time, an individual, a company, or a nation that produces greater output over the other has an absolute advantage at producing such an output.

Hence, if it takes Venezuela 7.5 hours to produce the same batch of pumpkins that the United States produces in 8.5 hours, then, Venezuela has an absolute advantage in producing pumpkins over the United States.

More on absolute advantage can be found here: https://brainly.com/question/13221821?referrer=searchResults

Which organisms replicate cells by mitosis?

Answers

Answer:

All organisms, both prokaryotes and eukaryotes, can replicate cells by mitosis.

Explanation:

Mitosis is the process of cell division where, from a progenitor cell, two identical daughter cells are obtained. In the human being this process is carried out by somatic cells.

Cell division by mitosis is carried out by all living beings:

Prokaryotic organisms, unicellular, use it as a means to reproduce. Eukaryotic organisms, most of them pluricellular, use it in the processes of growth, development, repair and regeneration of tissues.

All living beings can perform mitosis as a process of cell replication, although with different objectives.

Cyanide poisons cell by limiting the production of ATP through cellular respiration. Cyanide does this by blocking the enzyme that attaches electrons and hydrogen atoms to oxygen to form water.

Which stage of cellular respiration would this most directly affect?

A Acetyl CoA formation
B Electron transport chain
C Glycolysis
D Krebs cycle

Answers

C SHOULD BE THE CORRECT ANSWER BUT IM NOT SURR

respiration in echinoderms​

Answers

In general, echinoderms typically respire by simple diffusion, using gills or specialized projections, like tube feet or pockets, to circulate water and oxygen through their bodies. Many echinoderms also use a simple hemal system, a series of pockets and tubes that serves almost like a net of veins and arteries.

The pointed or elongated stains that radiate out from the central area of a bloodstain
are called
O1) satellite spatters
O 2) spines
O3) strings
O4) sprays

Answers

Answer:

answerbis 2) spines

hopes this help u

Answer:

it would be called spines or blood tails.

Please help me ?!!!!

Answers

Answer:

the last one I am guessing

Explanation:

If right can you give me brainiest

Hope you have a wonderful day:)

In the carbon cycle, what form of carbon do producers take in from the atmosphere to perform photosynthesis?
OA. carbohydrates
OB. CO2
O c. protein
OD.
solid carbon
O E.
water

Answers

Answer:CO2

Explanation:

Explain how matter is cycled between plants and animals.

Answers

The food of almost any kind of animal can be traced back to plants. ... Matter cycles between the air and soil and among plants, animals, and microbes as these organisms live and die. Organisms obtain gases and water from the environment and release waste matter (gas, liquid, or solid) back into the environment. Hope this helps :)

The food of come from autotrophic plant to animal through food chain. The energy cycles between the air and soil and plants, animals, and microbes occur by food web.

What are the components of food web?

A food web is defined as the cyclical event of energy transfer among different trophic level of organism.

The major components are primary producers, primary consumers, secondary consumers, tertiary consumers, quaternary consumers

Primary producers are the green autotrophic plants and capture some of the solar energy  and convert it into chemical energy by photosynthesis.

The net primary productivity (NPP) of energy is defined as the rate of photosynthesis minus the rate of respiration of plants.

Primary consumers or herbivores feed on producers constitute  the second trophic level of the food web.

in third tropic level, Secondary consumers eat primary consumers where as  tertiary consumers, quaternary consumers or predators, carnivores or omnivores, which are both plant- and animal-eaters, such as humans.

For more details regarding food web , visit:

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A mutation in a polypeptide with the original amino acid sequence of: Met-Ala-Gln-Arg-Glu-Leu results in a mutant with the sequence: Met-Ala-Gln-Gly-Glu-Leu. Which describes the most likely type of mutation that has occurred?

Answers

Answer:

This question lacks options, however, it can be answered based on general understanding of the topic

The answer is SUBSTITUTION MUTATION

Explanation:

A mutation is any change that occurs in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. One type of mutation is SUBSTITUTION MUTATION, which is a mutation in which one or more nucleotide base is replaced by another in the sequence.

Nucleotide bases are read in a group of three called CODON. Each of these codons specify amino acid. Hence, if the nucleotide base sequence is altered during mutation, the amino acid sequence is altered likewise. In this case where the original amino acid sequence is: Met-Ala-Gln-Arg-Glu-Leu, the mutation affected the nucleotide bases coding for Arginine (Arg), hence changing it to Glycine (Gly).

This means that a base substitution mutation occured, replacing the amino acid Arginine with Glycine in the mutated sequence.

What TWO things cause denaturation of enzymes:

Answers

introducing heat or chemicals which will alter its pH .

Chemicals used in chemotherapy treatments to fight cancer can also harm cells in hair follicles and bone marrow.
What characteristic do these cels most likely share with cancerous cells?
O They form tumors.
O They spread through the blood.
• They divide rapidly.
O They contain a mutation.
A

Answers

Answer:

They divide rapidly

Explanation:

Some normal cells such as hair follicles cells, mouth cells, digestive tract cells, and bone marrow cells divide rapidly. In mammalians, hair follicle cells are cells localized in the skin, specifically in the dermal layer of the skin. In this region, epidermal cells that form the root of the hair divide rapidly by interacting with neuropeptides, hormones, and immune cells. On the other hand, the bone marrow is a spongy tissue found in bones that contain stem cells (which also divide rapidly). In consequence, it is well-known that high-dose chemotherapy treatments may damage these types of cells.

Which one is NOT a secondary consumer
A.
herbivore
B.
lion
C.
carnivore
D.
ominvore

Answers

Answer:

a. herbivore i think

Explanation:

ค้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎­๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎­๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎­๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎­๎๎๎๎๎๎๎๎ํํํํํํํํํํํํ­ํํํํํํํํํํํํํํํํํํํํ­ํํํํํํํํํํํํํํํํ ค้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎\ค้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้้้้้้­้้้้้้้้้้้้้้้ ฏ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎

Answer:a

Explanation:

According to the bar graph, how many players averaged more than 30 points
per game?

Answers

Answer:

2 players

Explanation:

Answer:

2

Explanation:

= Arenas and Bryant

.........

Which of the following predictions is most likely consequence of the mutation?

Answers

Answer:

Explanation:

where are the following

At this stage, the body is dry and mostly bones, cartilage, and dry Skin With oy
beetles present.
O1) Decay/Black Putrefaction
O2) Bloat/Putrefaction
O3) Post-Decay/Butyric Fermentation
O4) Dry/ Skeletal

Answers

Answer:

i m not sure but the answer may be dry /skeletol

17. Which organelle is not correctly matched with its function?
a. Cytoplasm-jellylike substance that supports the other organelles
b. Mitochondria- creates energy for the cell without the sun
c. Chloroplast- uses the sun's energy to create food
d. Cell wall- controls what comes in and out of the cell

Answers

The answer that is incorrect is most likely cell wall. cell membrane is what controls what comes in and out of a cell. A cell wall just supports the cell and keeps its shape.
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