In order to fertilize the egg, spermatozoa must release the enzymes hyaluronidase and acrosin that erode away two layers around the egg called the

Answers

Answer 1
The corona radiata and zona pellucida.

Related Questions

What are some common signs and symptoms of mental health disorders?

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confused thinking, feeling of extreme highs and lows, social withdraw, dramatic changing in sleep and eating, seeing things or hearing things that arent there, fear, strange thoughts, and suicidal thoughs

This is the change in behavioral or feeding patterns by two or more competing populations to reduce interspecific competition.

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The change in the behavioral as well as the feeding patterns by 2 or more population competing for reducing interspecific competition which is also called as the character displacement is niche shift which is the answer.Hope this would help and this is the right answer.

The ductus arteriosus allows fetal blood to move from the

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The ductus arteriosus allows fetal blood to move from the pulmonary trunk into the aorta. The ductus venosus on the other hand is a fetal vessel that transports blood from the umbilical vein to the inferior venacava. Ductus arteriosus is a blood vessel connecting the main pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs.

Final answer

The ductus arteriosus allows fetal blood to move from the pulmonary trunk to the aorta. This shunts blood away from the non-functioning lungs and into systemic circulation during fetal development.

The ductus arteriosus is a vital part of fetal circulation, providing a bypass mechanism for the majority of blood from the right ventricle that is pumped into the pulmonary trunk. Instead of going to the non-functioning fetal lungs, this blood is diverted directly into the aorta, effectively circumventing the pulmonary circulation. Post-birth, when the newborn inhales for the first time and lung pressure drops, the ductus arteriosus begins to close because of the increased oxygen levels, allowing normal postnatal circulation to take over. Eventually, the ductus arteriosus completely closes and becomes the ligamentum arteriosum.

Which would be a stronger electromagnet, the one with the larger coils (a) or the smaller coils (b)?

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I believe the one with the smaller coils would be a stronger electromagnet.  An electromagnet is a temporary magnet made from current carrying wire around a magnetic metal core. The strength of an electromagnet, is directly proportional to not only the current, but also the number of windings around the solenoid. Increasing the number of windings and making them smaller will increase the strength of an electromagnet.

How can two species share the same habitat without driving the other to extinction?

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it is not possible for two species with the same niche to coexist. one species will eventually drive the other into extinction

A woman frequently has a dinner meal of grilled steak, baked potato with margarine, green peas, and a white dinner roll. which food should be eaten less often to reduce her risk of breast cancer?

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Grilled steak should be eaten less often to reduce her risk of breast cancer. When meats are cooked at high temperatures such as grilling or pan frying, there is production of polycyclic aromatic hydrocarbons and heterocyclic amines which are chemicals that can trigger changes to the DNA and this can increase breast cancer risk.






Final answer:

The grilled steak should be consumed less frequently to reduce her risk of breast cancer due to a correlation between high intake of red meat and increased breast cancer risk. A diet rich in fruits, vegetables, lean proteins, and whole grains is recommended.

Explanation:

To reduce her risk of breast cancer, the woman should consider eating the grilled steak less often. Although, it's important to note that a balanced diet and regular exercise contribute significantly to overall health. Epidemiological studies indicate a positive correlation between high intake of red meat such as steak and an increased risk of breast cancer. Instead, a diet rich in fruits, vegetables, lean proteins, and whole grains is recommended. Regular physical activity is also as important as a nutritious diet.

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Describe the order of the light dependent reactions of photosynthesis in a plant's chloroplast.

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The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.

As you reach for a rose, you unexpectedly feel the painful poke of a thorn. you quickly withdraw your hand. which part of this process is accomplished mainly by the central nervous system?

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for the answer to the question above, I think the answers are

"The stimuli input"
it is the stimuli that are perceived by our senses like smell, sight, touch, taste, and hearing.

"Integration" and "motor output"
which is the function of three inputs – sensory, cognitive, and intrinsic.

In sea urchins, the process of fertilization produces a(n) _____. in sea urchins, the process of fertilization produces a(n) _____. archenteron morula gastrula gamete zygote

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Zygote 

Zygote is known to be eukaryotic cell that formed from the fertilization of two gamates. Thus, it is when fertilized egg cell result from the union of a male gamete (sperm) with a female gametes (Ovum).

What is the process of water moving through the soil called answers?

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The process of water moving through the soil is called percolation or ground water recharge. In this process water oozes, seeps, or filter through the soil beneath the surface, without a defined channels, or in a course that is unknown and not discoverable from surface indications without excavation for that purpose. Percolation and infiltration are two related but different processes describing the movement of water through the soil. Infiltration involves the downward entry of water into the soil or rock surface while percolation is the flow of water through soil and porous or fractured rock.
Final answer:

Water moving through the soil is called percolation. This water can be used by plants for metabolism or evaporate from leaf stomata, in a process called evapotranspiration. Remaining water infiltrates the subsoil and bedrock, forming groundwater.

Explanation:

The process of water moving through the soil is referred to as percolation. During rainfall, significant water is lost through evaporation from plant surfaces. The remnant water reaches the soil and starts to move downwards. When the soil is saturated from a heavy rainfall, surface runoff occurs. Most of this soil water is absorbed by plant roots for the plant's metabolism. A substantial proportion of this water is lost to the atmosphere through a process called evapotranspiration, which involves water entering the plant's vascular system through the roots and evaporating from the leaf stomata. The water in the soil that does not evaporate and is not used by the plants can infiltrate the subsoil and bedrock, turning into groundwater.

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A device that presents pure tones to a person through ear phones is called

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Audiometer

Audiometer is a device that presents pure tones to a person through ear phones. Audiometer tests the intensity and frequency range of sound that can be detected by the human ear. The device is made up of a fixed hardware unit joined to a pair of headphones and a test subject feedback button.






Wetlands ________.
a. are important in improving water quality
b. are bodies of swiftly flowing water
c. are found in the intertidal zone
d. include rivers, streams, po

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Your answer is A. Are important in improving water quality.

I hope this helps!

The wetland ecosystem is different from the ecosystems of other water bodies like the ponds, streams and lakes. Wetlands are inundated by water permanently or seasonally. These lands have unique vegetation of aquatic plants that are adapted to hydric soil.

A rich and healthy wetland ecosystem has a wide diversity of plants and animals that act as filtering systems in removing sediments and impurities from water making it cleaner.

Hence the right option for this question is a

Some geologists hypothesize that the mass extinction of dinosaurs was caused by a large meteorite impact. These geologists think the meteorite impact significantly changed Earth's climate. How could a meteorite impact do this?

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The meteorite was probably 10 to 15 km (6.2 to 9.3 mi) wide and affected the entire planet through a proces called "impact winter". As the name suggests, an impact winter is a period of low temperature produced by a huge cloud of ash and dust that blocks sunlight. Since sunlight is essential for plants to survive, if the sun rays are blocked by this cloud, all animals that depend on those plants (including dinosaurs) will die. The meteorite could have created such a cloud upon hitting the earth.  

Infact the meteor only had a 13% chance to hit the earth and make ash and soot fly into the air

why is stop and start codon signals necessary for protein synthesis ?

Answers

Start codons is necessary for the start of protein at accurate site on mRNA sequence, while stop codon is necessary for termination of protein synthesis. if any of them either start or stop codon attach at inappropriate place in mRNA sequence it will lead to abnormal protein synthesis.

The stop codons and the start codon are fundamental because these codons SPECIFY the length of the resulting PROTEIN SEQUENCE during protein synthesis (translation).

A codon is a triplet of nucleotides in the messenger RNA (mRNA) that determines a specific amino acid, which will be added to the nascent polypeptide chain (i.e., the protein) during translation.

There are 64 codons, 61 of which encode 20 different amino acids, whereas 3 codons specify stop signals that end the process of translation (UAG, UAA, and UGA).

The codon AUG is the first codon in the transcribed mRNA sequence, which encodes the methionine amino acid.

Both start codons and stop codons are fundamental because they indicate where to start and where to finish the process of protein synthesis, respectively.

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One would be likely to see a negative protein balance during

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dddddddddddddddddddddddddddddddddddddddddddddd

One who has anorexia nervosa and regularly starves themselves is likely to be in a state of negative protein balance.

What is anorexia nervosa?

It is a type of eating disorder that is marked by purging, extreme weight loss, and altered body image.

What does protein balance mean?

Protein balance means equilibrium between the protein intake and its synthesis (anabolism), and its catabolism and removal as nitrogenous waste.

What is meant by a negative protein balance?

A state in which tissues lose protein more quickly than it can be supplied because protein catabolism (breakdown) outpaces protein anabolism (synthesis) is known as a negative protein balance.

What is meant by a positive protein balance?

A state in which a patient is given more protein than is lost is known as the anabolic or positive protein balance state.

What is the relationship between protein and nitrogen?The primary component of amino acids, which are the fundamental units of protein synthesis, is nitrogen. The study of protein metabolism can be done by monitoring nitrogen intake and losses.Therefore, the balance of nitrogen is frequently used as a substitute for the measure of the protein balance.

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Give one real life example of osmosis either in the human body or in plants. you must list an example and leave a meaningful comment on another students example in order get credit for this week's canvas assignment.

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In plants: there’s a higher water potential in the soil than the plant so the roots hair cell from the plant takes in water from the soil via osmosis. Where the water from the soil moves down the water potential into the plant

How does cocaine induce a sense of exhilaration? by decreasing the activity of the main excitatory neurotransmitter in the brain by producing a long but mild sense of euphoria by increasing the higher social regulatory functions of the cerebral cortex by increasing the availability of dopamine and serotonin in synapses?

Answers

Cocaine induces a sense of exhilaration by increasing the availability of dopamine and serotonin in synapses. Cocaine is among the powerful stimulants which increase the release of neurotransmitters such as nor-epinephrine, dopamine and serotonin, that affect CNS and PNS activity. Cocaine administration constricts blood vessels that are absorbing it, son snorting it is a slow way to deliver it to blood stream and eventually the brain.

Final answer:

Cocaine creates a sense of exhilaration by preventing the reuptake of dopamine in the brain, which stimulates the pleasure centers leading to a euphoric "high". This is followed by a rapid depletion of dopamine, causing cravings for the drug.

Explanation:

Cocaine induces a sense of exhilaration by increasing the availability of dopamine and serotonin in synapses. It acts as a stimulant by preventing nerve cells from reabsorbing dopamine, thus allowing high levels of this neurotransmitter to stimulate the pleasure centers of the brain. This enhancement of dopamine action is responsible for the euphoric "high" associated with cocaine use, as well as its addictive properties. After use, dopamine levels are quickly depleted, leading to a craving for more cocaine to regain the pleasurable sensation.

What role do decomposers play in the oxygen-carbon dioxide cycle?

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Decomposers, fungi, and microbes play an important role because they break down the remains of dead plants and animals.

The riskiest sexual activity in terms of contracting hiv is

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having sex without a condom

What happens to rna polymerase ii after it has completed transcription of a gene?

Answers

It is free to bind to another promoter and begin transcription.
Final answer:

After completing transcription, RNA polymerase II is released from the DNA template, and the pre-mRNA undergoes processing to become a mature mRNA molecule.

Explanation:

After RNA polymerase II has completed transcription of a gene, it is released from the DNA template. At this point, the newly synthesized RNA molecule, known as the primary transcript or pre-mRNA, undergoes several processing steps.

The primary transcript is modified by the addition of a cap and a poly-A tail, and introns (non-coding regions) are spliced out to form the mature mRNA. Once these modifications are complete, the mature mRNA molecule can exit the nucleus and undergo translation to synthesize a specific protein.

In summary, RNA polymerase II dissociates from the DNA template after transcription, while the pre-mRNA undergoes processing to become a mature mRNA molecule.

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You are caring for a client admitted with chronic bronchitis. the client is having difficulty breathing, and the family asks you what causes this difficulty. what would be your best response?

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Is smoking on the list of answers

how would relaxing the smooth muscles in arteries affect blood pressure ?

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When you relax the smooth muscles in arteries, it affects the blood pressure quite a lot. If you're a up and running person, you're most likely not always relaxed. Although - if you manage to relax, it would cause your blood pressure to lower from a high rate, to a much lower rate. That's the main outcome of this.

Answer:

Relaxing the smooth muscles in arteries would lower down the blood pressure.

Explanation:

Smooth muscles are present in lining of blood vessels. Relaxing the smooth muscles in arteries causes vasodilation, that is, the cavity of arteries is widened. Dilated arteries allow more blood to pass through them and lower down the blood pressure. Constriction of smooth muscles of arteries causes vasoconstriction and increases blood pressure.

Name two ways in which animal behavior is related to environmental cycles

Answers

If an inherited behavior allows an animal to survive and reproduce, the behavior can spread ... Many animals respond to the cycles in the environment with daily or seasonal cycles of behavior. Hope that helps

Final answer:

Animal behaviors such as migratory patterns and reproductive cycles are aligned with environmental cycles to enhance survival rates.

Explanation:

Animal behavior can be closely related to environmental cycles in various ways. Here, I will name two.

Migratory Patterns: Animals often migrate to exploit resources that are only available at certain times of the year due to seasonal changes. For example, many bird species migrate to warmer regions during winter when food is scarce in their breeding territories.Reproductive Cycles: Many animals time their breeding to coincide with environmental conditions that are favorable for the survival of their offspring. For example, deer may mate in the fall so that the offspring are born in the spring when food is plentiful and weather conditions are milder.

These behaviors ensure the survival of species by synchronizing life cycles with the changing environment.

Some plant roots grow with mycorrhizal fungi. the fungi absorb water and minerals and pass them on to the plant and receive carbohydrates from the plant. this is an example of -

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A symbiotic relationship.

Plant roots that grow with mycorrhizal fungi create a mutualistic relationship called mycorrhiza, where the fungi aid in water and mineral absorption while receiving carbohydrates from the plant.

The symbiotic relationship described, where plant roots grow with mycorrhizal fungi, is an example of mutualism, specifically a fungal and plant partnership known as mycorrhiza. The fungi absorb water and minerals from the soil and pass them on to the plant, while in return, the plant provides carbohydrates, produced through photosynthesis, to the fungi. This relationship benefits both organisms as the fungi obtain a steady supply of glucose while the plant increases its nutrient uptake and improves water absorption, thanks to the large surface area of the fungal mycelia consisting of hyphae that effectively facilitate these processes. Phosphorus and nitrogen are two key minerals that are more efficiently absorbed by plants due to the association with mycorrhizae.

"two plant species live in the same biome but on different continents. although the two species are not at all closely related, they may appear quite similar as a result of _____."

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convergent evolution.

A species found only within a certain region is said to be _________ to that region.

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A species found only within a certain region is said to be
endemic species to that region. Endemic species are organisms that exist only in one geographic region. Some of the species are endemic to a particular continent or part of it others to a single island, but usually, that region is isolated in some way, so that species have difficulty spreading to other areas. It is also possible that the habitat of endemic species has unusual environmental characteristics to which endemic species are specifically adapted.

After tcs food has reached 165 degrees in a microwave oven the food should be

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Temperature Control for Safety (TCS food) is food that requires time and temperature control for safety. It has to be cooked to its minimum internal temperature, and hold that temperature for a specific amount of time to reduce pathogens to safe levels.

TCS foods—include milk and dairy products, eggs, meat (beef, pork, and lamb), poultry, fish, shellfish, cooked rice, beans, and vegetables.

After tcs food has reached 165 degrees in a microwave oven the food should be covered, and stirred during the cooking process. After cooking, allow two minutes stand time before serving.

After tcs food has reached 165 degrees in a microwave oven the food should be allowed two minutes stand time before serving.

Further explanation

Time and Temperature Control (TCS) Foods is the foods that need time and temperature control for safety, to prevent the growth of microbes on them.  The longer food is in the temperature danger zone, hence the more time pathogens have to grow. The Time and temperature control for safety foods cooked in a microwave must be cooked to 165 F.

After tcs food has reached 165 degrees in a microwave oven the food should be covered, and stirred during cooking process. After cooking, allow two minutes stand time before serving

Temperature danger zone for  Time and Temperature Control (TCS) Foods is 41 to 140 F. We should reduce the amount of time TCS food spends in the temperature danger zone.  If food is held in this range for four or more hours, you must throw it out. TCS food that stays in the Temperature Danger Zone doe 4 hours or longer must be thrown out because it could provide microorganisms to grow in the food.

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Answer details

Grade:  9

Subject: biology

Chapter: tcs food

Keywords:  tcs food

When one competitor species eliminates another competitor from the habitat, it is called ___________?

Answers

When one competitor species eliminates another competitor from the habitat, it is called competitive exclusion.  
There is a principle called the competitive exclusion principle or Gause's law referring to the relationship between two species competing for the same limiting resource which cannot coexist. The minimal advantage of one species will dominate and lead either to the extinction of the weaker competitor or to an evolutionary shift toward a different ecological niche.

dehydration synthesis definition

Answers

it is a chemical reaction that builds up molecules by losing water molecules.

A 64 year-old man has a past medical history of two strokes and diabetes. his dementia started four weeks after his first stroke and got worse after in his next stroke. he is most likely afflicted with:

Answers

The answer would be vascular dementia

There are several causes of dementia, one of them is vascular. Vascular dementia happens because of damage to the blood vessels that cause reduced oxygen and nutrient to the brain. The cause could be hypertension, diabetes, or stroke. The patient in this problem has dementia that got worse after stroke, so it is more likely to be vascular dementia.

Final answer:

The 64-year-old man with a history of strokes and diabetes likely has multi-infarct dementia or post-stroke dementia, which are forms of dementia resulting from cumulative brain damage due to strokes rather than Alzheimer's disease.

Explanation:

A 64-year-old man with a past medical history of two strokes and diabetes, whose dementia started four weeks after his first stroke and worsened after a subsequent stroke, is most likely afflicted with multi-infarct dementia or post-stroke dementia. Alzheimer's disease is a common type of dementia that typically develops slowly and affects memory, language, and cognition. However, since this man's dementia symptoms developed shortly after his strokes and he has diabetes (a risk factor for vascular issues), it is more likely that his cognitive decline is due to the strokes rather than Alzheimer's disease. This is consistent with the fact that about 20% of individuals who experience an ischemic stroke will develop dementia within six months following the event. Both multi-infarct dementia and post-stroke dementia are linked to cerebrovascular problems, including transient ischemic attacks (mini-strokes), which cumulatively cause brain damage and cognitive decline.

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