Which part of the spermatozoa contains the most mitochondria?
a. tail
b. midpiece
c. head
d. acrosome?

Answers

Answer 1
The answer would be: b. midpiece

Mitochondrial is an organelle that has a role in energy production. Part of the spermatozoa that need most energy would be its tail that has to constantly move. The movement of the tail mostly done in the midpiece where the mitochondrial present.
The head and acrosome should not have any, that is why the fertilized egg doesn't have mitochondrial from the sperm.



Related Questions

What is the process called when embryonic cartilage is replaced by bone cells?

Answers

cartalage and calsium

One method of lessening the environmental impact of strip mining is to -

Answers

Final answer:

To reduce the environmental impact of strip mining, land can be reclaimed for various uses, waste products utilized to create new materials, and bioremediation can neutralize contaminated water. In addition, promoting alternative practices such as minimal tillage can limit further damage.

Explanation:

One method of lessening the environmental impact of strip mining is to reclaim and repurpose the land after mining operations have ceased. Mining often leaves behind vast areas of disturbed land; however, such land can be rehabilitated and transformed into beneficial uses such as airports, landfills, and golf courses. Furthermore, the waste produced from mining operations, such as synthetic gypsum from scrubbers, can be utilized to make products like cement and wallboard, instead of being discarded as waste. This approach not only reduces the amount of waste sent to landfills but also conserves natural resources.

Beyond land reclamation, introducing bioremediation methods is also crucial. The use of bacteria to neutralize acidic water and detoxify chemical by-products from acid mining is an example of using natural processes to restore the habitat, making it suitable for animals and plants. Actions like these help to prevent pollution, save energy, and increase economic security by relying on domestic sources of reclaimed materials.

Lastly, policymakers and activists advocate for alternative mining practices, such as minimal tillage, which can reduce environmental damage while still fulfilling economic needs. Combination of such practices with reforestation and habitat restoration can further stabilize ecosystems and help in recovery of biodiversity.

A unique trait that is used to construct a cladogram showing relationships between organisms is called a

Answers

It is called a derived character. Hope this helps! (:

In most cases, cardiopulmonary arrest in infants and children is caused by: select one:
a. a drug overdose.
b. a cardiac dysrhythmia.
c. severe chest trauma.
d. respiratory arrest.

Answers

d. respiratory arrest

What kind of sensory adaptation would you hypothesize the cave fish has to allow it to navigate in a cave, including catching and eating food.

Answers

I think  the kind of sensory adaptation that i would hypothesize is that the cave fish has special sense organs on the surface of its body that responds to the presence of different chemicals in the water environment. This trait would be analogous (serving similar function but with a different evolutionary origin) to our sense of smell. 

The kind of sensory adaptation that the cave fish would have is :

Presence of sense organs on the surface of the cave fish

Sense organs

The presence of sense organs on the surface of the cave fish will allow the fish detect the presence of prey in the water and also the presence of different chemicals in the water as well.

Navigating through the cave is aided by the pair of eyes also present on the surface of the fish head.

Hence we can conclude that the e kind of sensory adaptation that the cave fish would have is : Presence of sense organs on the surface of the cave fish

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Why anatomical and molecular features often fit a similar nested pattern.in addition descibe a orocess that can cause this not to be the case

Answers

Anatomical and molecular features often fit a similar pattern due to Homology. Homology is the existence of shared ancestry between two structures or genes in a different species. 

A process that can cause this not to be the case is Convergent Evolution.
Convergent Evolution occurs when two unrelated species independently evolve similar traits to cope with evolutionary changes. 
-_-...............................

The cells that make up a human body need oxygen at all times. During periods of exercise and activity, the amount of oxygen needed increases. To meet this increased need, the number of breaths per minute during exercise can be sharply higher than the number of breaths per minute while at rest. Which term BEST describes the process by which cells work together to maintain the needed level of oxygen?
A) homeostasis
B) metabolism
C) osmosis
D) respiration

Answers

the correct is homeostasis

why will a radioactive rock never become completely stable?

Answers

Technically speaking, depending on the sample, the rock could become “stable.”

The radioactive decay of a radioisotope is expressed as a half-life equation; half-life is the colloquial term that describes how long it will take for half of the radioisotope to decay into another isotope or element. For example (if I remember correctly), Carbon-14 has a half life of 5,780 years. This means that in a 100% sample of C-14, after 5780 years passes, only 50% of that isotope would remain; another 5780 years, and only 25% would remain (half of half). Based on this principle, it seems like a sample could never fully decay because there’s always an amount that smaller than the current amount.

However, if the sample has a very short half life (milliseconds or nanoseconds) the sample would reach nigh-full decay eventually. At this point, it is considered “stable.”

Excess of neutrons and protons cause large amount of energy in the nucleus, which cause the instability of the radioactive rock.

What is a radioactive rock?

Radioactive rock consist of atoms of radioisotopes like thorium and uranium.

Excess neutrons or protons in an element's atoms provide extra energy in the nucleus.

That cause the atom to become imbalanced or unstable.

Whether and how radioactive elements can also become stable.

Radiation is emitted by the unstable nuclei of radioactive atoms.

Thus, the because of the nucleus, of the radioactive rock never become completely stable.

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Sperm whales, a(n) species, maintain their populations close to carrying capacity.

r-selected

k-selected

Answers

Sperm whales are k-selected species. Their reproduction rates are slower because they have longer gestation periods (like elephants or humans). 
Sperm whales, a K SELECTED species, maintain their population close to carrying capacity. 
K selected species are those species, whose population fluctuate at or near the carrying capacity. The carrying capacity of a specie refers to the maximum population size of a specie, which the environment can sustain indefinitely. K selected species have stable population and they usually reproduce low number of offspring. 

Which procedure is performed to affix sagging breasts in a more elevated position?​?

Answers

The correct answer is known as "Mastopexy".

Mastopexy is known as the plastic surgery mammoplasty procedure for raising sagging classification of breasts upon the chest of the female individual, through the use of changing and modifying the size, contour, and elevation of the female's breasts.

Final answer:

A breast lift, also known as mastopexy, is performed to affix sagging breasts in a more elevated position. It involves removing excess skin and reshaping the breast tissue to achieve a more youthful and uplifted appearance.

Explanation:

The procedure performed to affix sagging breasts in a more elevated position is called a breast lift, also known as mastopexy. This is a surgical procedure that involves removing excess skin and reshaping the breast tissue to achieve a more youthful and uplifted appearance.

During a breast lift, the surgeon will make incisions usually around the areola and may extend vertically and horizontally depending on the amount of sagging. The breast tissue is then lifted and reshaped, and any excess skin is removed. The nipples and areolas are repositioned to a higher position on the breast.

It's important to note that a breast lift does not significantly change the size of the breasts or provide a fuller appearance. If a patient desires both a lift and an increase in breast size, a breast augmentation with implants may be recommended.

How do animals in the desert defend themselves from predators?

Answers

Some have spines on their skin such as horned toads.
Some emit a slime when scared that will make the predator ill like toads.
Some use camouflage.
Some have thorns on them Like the porcupines.

Answer:

anything with there claws

Explanation:

false or deliberately inaccurate information
(2 words, 8 letters)

Answers

The answer would be fake news. It is a term use to those stories that are not right or fabricated with no facts or reliable sources. These stories are then propaganda misleading people and this usually is present in social media in which one can share it right away.

There are about 100 calories in 30 grams of swiss cheese. ruth ate 70 grams of this cheese. about how many calories were in the cheese that she ate if the number of calories varies directly as the weight of the cheese?

Answers

Answer: 233.33 calories

The cheese in this question has 100 calorie/30 grams and Ruth ate 70 grams of that cheese. To find the number of calories that Ruth ate, then you just need to multiply the mass with the calorie. The calculation will do as follow:
70grams * (100 calorie/30grams)= 233.33 calories

After filtering by the nephron, where does the cleaned blood go

Answers

Answer: renal vein

Urine passes thru large channels called (ducts) which drain into the renal pelvis or (inner part of the kidney).  Next, the urine passes thru a ureter then afterward goes from each kidney to the bladder. Urine is then stored in the bladder while the “cleaned' (filtered) blood”  from each kidney go into a large blood vessel called the renal vein. This vein gets the blood back to the heart.

Answer:

renal vein

Explanation:

apex

Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream?

Answers

Yes.
________________

True. Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream.

What is Hemoglobin?

Hemoglobin is an iron-containing protein found in red blood cells that plays a crucial role in transporting oxygen from the lungs to the various tissues and organs of the body.

It binds to oxygen in the lungs, where oxygen concentration is high, and releases it in tissues with lower oxygen levels.

This process is essential for the delivery of oxygen to cells and the removal of carbon dioxide, a waste product of cellular respiration, from the tissues.

Hemoglobin's ability to bind and release oxygen is facilitated by its iron component, which can reversibly bind to oxygen molecules.

Thus, Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream.

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Describe why the lymphatic system is often compared to the cardiovascular system. discuss differences and simialatities.

Answers

The lymphatic system is much like the circulatory system as they circulate different areas. The circulatory system circulates blood and lymph through veins and capillaries. The lymphatic system circulates lymph through lymphatic vessels which are connected to lymph nodes that filter the lymph. The circulatory system filters blood through the kidneys. They both pump lymph or blood towards the heart.

What has led scientists to believe that echinoderms are more closely related to humans and other vertebrates than to cnidarians?

Answers

Research study show that sea urchins displayed similarity with humans like having an immune system and genetic material (DNA). Both belong to the deuterostomes. These animals are similar based on their early stage of development specifically during the embryos form.

Final answer:

Echinoderms are more closely related to humans and other vertebrates than to cnidarians because both are deuterostomes, a group determined by specific embryonic development patterns and characterized by having a sophisticated endoskeleton.

Explanation:

Scientists believe that echinoderms are more closely related to humans and other vertebrates than to cnidarians because both echinoderms and chordates (the phylum that includes humans) are classified as deuterostomes. This is a significant classification that is determined by the pattern of embryonic development, where in deuterostomes, the anus develops from the first opening in the embryo (the blastopore), and the mouth forms secondarily. In contrast, protostomes develop the mouth from the blastopore. The shared deuterostome development pattern is just one of the reasons echinoderms and vertebrates are considered more closely related. Additionally, echinoderms possess an endoskeleton made up of calcareous ossicles covered by the epidermis, which is conceptually similar to the vertebral endoskeleton of humans and other vertebrates, further supporting the close phylogenetic relationship between the two groups.

_____may have evolved from aerobic bacteria and ____ may have evolved from photosynthetic cyanobacteria engulfed by a predatory cell.

Answers

____ may have evolved from aerobic bacteria and ____ may have evolved from photosynthetic cyanobacteria that were engulfed by predatory prey prokaryotic cells.

Mitochondria; chloroplasts

What term is given to the actual name of a color?

Answers

Hue. Hope this helps

Why did the number of americans receiving food stamps rise after 2008?

Answers

Due to the recession, the number of needy Americans skyrocketed.

In several neurological diseases, axons lose their insulating myelin sheath. what is the consequence of this loss

Answers

   In unmyelinated axons, the action potential (nerve impulse) travels continuously along the axons and thus, the conduction of nerve impulse is slower. The loss of myelin sheath is called demyelination and is the hallmark of some neurodegenerative autoimmune diseases like multiple sclerosis or acute disseminated encephalomyelitis. Demyelination interrupts signals between the brain and other parts of the body and it includes symptoms like loss of vision/hearing, blurriness in the central visual field, double vision, weakness..

Which structure of a paramecium holds a "reserve copy" of all the cell's genes?

Answers

The structure of a paramecium that holds a "reserve copy" of all the cell's genes is the micro nucleus.
The micro nucelus is one of the two kinds of nuclei the paramecium has. The other is the  large ellipsoidal nucleus called a macronucleus. Every paramecium must have at least one small nucleus called a micronucleus. The micronucleus is a storage site for the germline genetic material of the organism.

In a Paramecium, the micronucleus holds a 'reserve copy' of all the cell's genes and is essential for sexual reproduction, as well as the formation of a new macronucleus.

In a Paramecium, the structure that holds a "reserve copy" of all the cell's genes is the micronucleus. While the macronucleus manages most of the biological functions such as asexual binary fission, the micronucleus is critical for sexual reproduction and serves as a genetic reservoir. During the sexual reproduction process known as conjugation, the micronucleus undergoes meiosis and subsequent exchange of genetic material with another Paramecium, ensuring genetic diversity. Following conjugation, the micronucleus gives rise to a new macronucleus, thus supporting cellular rejuvenation and ensuring a continuity of the genetic blueprint.

The protein agtr1 (angiotensin ii receptor 1), encoded by gene agtr1, allows for binding of angiotensin ii, which generates diacylglycerol, and in turn activates protein kinase c [

Answers

dddddddddddddddddddddddddd

There can be advantages to using fossil fuels. What is one advantage?
A)Fossil fuels are a nonrenewable source of energy, because they are primarily made from the remains of ancient plant and life matter.
B)Fossil fuels are inexpensive and readily available with existing equipment. C)The burning of fossil fuels releases carbon dioxide in the environment, contributing to climate change.
D)The burning of fossil fuels releases harmful chemicals into the environment.

Answers

Fossil fuels are inexpensive and readily available with existing equipment.

Answer: B)Fossil fuels are inexpensive and readily available with existing equipment.

Explanation:

The fossil fuels are the fuels that are produced inside the heap of the earth crust. These are produced as a result of the geological and biological processes occurring under the surface of earth. These includes the hydrocarbons such as coal, crude oil, natural gas which are formed from the dead remains of the plants and animals.

These fuels are the non-renewable source of energy and these produce large amount of carbon dioxide on burning, this can lead to global warming.

The main advantage associated with these fuels is that they are inexpensive because of the appreciable volume of availability in some regions of the world.

Which of these species is most closely related to Felis rufus?

Answers

Final answer:

The cougar is most closely related to Felis rufus, or the red fox.

Explanation:

According to the phylogenetic tree, the cougar is most closely related to Felis rufus, or the red fox.

Smoke form forest fires is most likely to affect air quality over larger areas for many days when ...

Answers

for the answer to the question above,
Smoke from forest fires is most likely to affect air quality over larger areas for many days when "a persistent atmospheric inversion exists in the region."
I hope my answer helped you. Have a nice day!
Final answer:

Forest fire smoke affects large area air quality over many days when favorable wind conditions are present, there are larger fires, and the burning is persistent.

Explanation:

Smoke from forest fires is most likely to affect air quality over larger areas for many days when there are favorable wind conditions, larger fires, and persistent burning. Favorable wind conditions help to disperse the smoke satisfactorily over a vast area, maintaining its presence in the atmosphere for a longer duration. The larger the fire, the more smoke is produced, leading to a more significant impact on air quality over an extensive area. Lastly, persistent burning causes continued production of smoke, hence more extended periods of polluted air.

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Which two systems provides the molecules needed for the metabolic activity that takes place at ribosomes?

Answers

The answer is, digestive and circulatory.

Final answer:

Ribosomes in cells require specific molecules like tRNA and mRNA for metabolic activities.

Explanation:

Ribosomes are the cellular structures responsible for protein synthesis in living cells. They consist of large and small subunits composed of ribosomal RNA (rRNA) and proteins. The molecules needed for the metabolic activity at ribosomes are transfer RNA (tRNA) and messenger RNA (mRNA), along with various enzymatic factors that contribute to the translation process.

The distribution of terrestrial biomes on earth depends mostly on ________.

Answers

The distribution of terrestrial biomes on earth depends mostly on Both temperature and rainfall. Terrestrial biomes are defined in a large part by the plants that live in it. This biome is defined by its climate and dominant vegetation, and includes; grassland, tundra, tropical rain forest, desert and deciduous and coniferous forest. 
Final answer:

The distribution of terrestrial biomes on Earth depends on abiotic factors such as temperature and precipitation.

Explanation:

The distribution of terrestrial biomes on Earth depends mostly on abiotic factors such as temperature and precipitation. These factors determine the types of plants and animals that can survive in different regions. For example, tropical wet forests thrive in warm, moist environments, while deserts have low biodiversity due to extreme temperatures and lack of water.

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​mickey, who describes himself as heterosexual, frequently drinks to intoxication and has been an intravenous methamphetamine user for years. after mickey developed a high fever and vomiting, his doctor diagnosed mickey with hepatitis
c. mickey most likely contracted hepatitis through . . .

Answers

Mickey most likely contracted hepatitis through his iv drug use. (Intravenous drugs). The most of drugs which are used among iv users are;
Opiates, Heroin, Cocaine, Prescription drugs.
IV drugs can cause fatal health complications, for example,
increased risk of blood-borne disease
Abscesses
Infections
Increased chance of overdose
Collapsed veins
Some of the signs of iv drug use are;
Track marks on arms.
wearing of the long sleeve in warm weather.
Swollen feet and hands.
Final answer:

Mickey likely contracted Hepatitis C through his intravenous drug use, as the disease is often transmitted through blood-to-blood contact, such as sharing needles.

Explanation:

Mickey, diagnosed with Hepatitis C, likely contracted the disease through his intravenous drug use. Hepatitis C is often transmitted through blood-to-blood contact, and sharing needles, as is common among intravenous drug users, is a well-established risk factor. Even microscopic amounts of methamphetamine used during these sessions can contain the blood of an infected person, which can lead to transmission of the virus to Mickey.

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__________ is a bacterium that lives in our digestive systems, where it has a beneficial role; but it becomes dangerous when our food or water is contaminated with feces. sciemce

Answers

The answer would be: Escherichia coli

Escherichia coli is normal flora of the human gastrointestinal tract. Escherichia coli has a beneficial role because they can prevent infection of other harmful bacteria and produce some substance like vitamin K. But some strain of E. coli is dangerous and could cause bloody diarrhea, vomiting, and stomach ache.
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