Marine sponges contain a biological catalyst that blocks a certain step in the separation of chromosomes. which cellular process would be directly affected by this catalyst

Answers

Answer 1
The answer would be mitosis 

Mitosis is a process of cell division that will produce two similar cells. The process includes the cloning of genetic material of the cell. If separation of chromosomes is disrupted, mitosis won't be successful. 
Diffusion, respiration, photosynthesis doesn't involve separation of the chromosome.

Related Questions

Gil's mother calls to make an appointment for her son. she reports that he has had an elevated temperature for 24 hours, ranging from 99° to 102.8° f. mrs. harris is describing which type of fever?

Answers

Final answer:

Gil's fever with temperatures fluctuating between 99° and 102.8° F suggests an intermittent fever, likely caused by a viral or bacterial infection, and while fevers can be beneficial in fighting infection, high fevers may require medical attention.

Explanation:

The fever described by Mrs. Harris for her son Gil, with a temperature range from 99° to 102.8° F (37.2° to 39.3° C), is likely intermittent. This type of fever is characterized by elevated temperatures that vary throughout the day but return to normal or subnormal levels at least once in 24 hours. The possible cause of Gil's fever could be a viral or bacterial infection, as fevers result from the body's immune response to these pathogens, leading to an upward adjustment of the body's temperature set point. It is also important to recognize that fever can play a beneficial role in fighting infections by inhibiting the growth of pathogens and speeding up cellular repair processes. However, if a fever becomes dangerously high, medical intervention may be necessary to prevent complications.

Some cancer treatments have a side effect of killing white blood cells. which best describes a person undergoing this treatment? apex

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The correct answer is this: THEY WOULD BE MORE LIKELY TO BE HARMED BY COMMON BACTERIA. This is because, the white blood cells, which act as the body's defender against diseases have been destroyed. Thus, in case of microbe invasion, there won't be any white blood cell to fight the invading microbes. 

A metastasis is _________. select one:
a. a secondary tumor in a different part of the body that arises from a cell from the primary tumor.
b. a cell that is dividing in defiance of normal constraints.
c. a part of the primary tumor that has invaded the surrounding tissue.
d. the portion of the cancerous tumor that displays genetic instability.

Answers

I think metastasis is a secondary tumor in a different part of the body that arises from a cells from the primary tumor. Metastasis means the spread of cancer cells. Cancer cells may break away from a primary tumor and enter the bloodstream or lymphatic system and is then spread to other parts of the body. 

Casey rides a very fast bicycle on flat terrain but has difficulty climbing hills. Which solution would improve the performance of the bicycle on hills

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Casey should build more muscle by working out and continuing to ride up hill

Answer:

lower the gear ratio from 4:1 to 2:1

Explanation:

Suggest an advantage to being able to tolerate variations in a wide range of environmental factors?

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Organisms have adaptations enabling them to survive within certain conditions in one's environment. One advantage in being able to tolerate variations in wide range of environmental factor is that organisms can adapt to any climate,seasonal temperature,light availability and weather conditions.

Asexual reproduction in which the body breaks into several fragments, which later develop into complete organisms.

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correct . . . . . . . .

Identify two ways in which animals can reduce the intensity of intraspecific competition

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Intraspecific competition involves an interaction where by members of the same species compete for limited supply of resources. The end result is the reduction in fitness for both individuals. Animals can reduce the intensity of intraspecific competition by exploiting different type of food resources and also moving to other areas that are sparsely populated and with high amounts of food. 

Final answer:

Animals can reduce intraspecific competition by changing behaviors to minimize competition and by niche differentiation, where they use different resources or habitats within the same environment.

Explanation:

Two ways in which animals can reduce the intensity of intraspecific competition include behavior changes and niche differentiation. Firstly, animals can change their behaviors to avoid direct competition for resources, such as switching their active hours to avoid competition for food. Secondly, they can engage in niche differentiation where individuals of the same species exploit different habitats or resources, reducing direct competition. An example of this in interspecific competition is observed in anolis lizards, where specialization in their habitat selection, such as being ground-dwellers or tree-dwellers, decreases the overlap in resource use among different species. Similarly, in intraspecific competition, animals of the same species can evolve different adaptations that allow them to use varied resources or live in different habitats, thus reducing direct competition for the same resources.

"you are exercising doing aerobics or a stair climber at your fitness center. as you increase to a high intensity of exercise, you would expect the tidal volume to ______________ and the frequency of respiration to _____________."

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You are exercising, doing aerobics or a stair climber at your fitness center. as you increase to a high intensity of exercise, you would expect the tidal volume to increase and the frequency of respiration to increase. 

What vessel delivers oxygenated blood to systemic capillaries for gas exchange? what vessel delivers oxygenated blood to systemic capillaries for gas exchange? pulmonary trunk aorta circumflex artery coronary artery?

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The aorta is the vessel that delivers oxygenated blood to systemic capillaries for gas exchange. 

The pulmonary trunk carries unoxygenated blood so it is out of the question. The circumflex artery is a branch of the left coronary artery which supply blood to the heart. This leaves us with the AORTA. 

How does a phylogenetic tree indicate major evolutionary events within a lineage?

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Each of the branching in the phylogenetic tree depicts how organisms evolved from a common ancestor. The closer they are to their common ancestors the closer the relationship between the organisms. Each internal node represents a divergence event. Examples of characteristics used in developing phylogenetic trees include morphology, DNA sequence, biochemical pathways, and etcetera.

This is a muscular tube through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.

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the esophagus moves food down

What would happen in a premature infant if insufficient surfactant were available? mastering easynote?

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I think if insufficient surfactant were available then it would result to alveolar collapse. The alveoli collapses due to poor surfactant spreading during inspiration, causing the surface tension to be at its highest which tends to collapse smaller alveoli. Atelectasis may also occur during suction, as along with sputum, air is withdrawn from the lungs. 

A serious, inflammatory condition in which the colon mucosa protrudes through the colon wall is called __________.

Answers

A serious, inflammatory condition in which the colon mucosa protrudes through the colon wall is called diverticulitis. Diverticulitis is a related digestive condition that affects the colon. This condition occurs when naturally weak part of the colon tears which result in inflammation or infection. Symptoms of diverticulitis include severe abdominal pain, fever, nausea and constipation.






Pamela has started to take antibiotics, which kills most of the helpful and harmful bacteria in her body. Her doctor suggested she eat yogurt containing helpful bacteria to reestablish the bacteria in her digestive tract. Why is this important?

Answers

The helpful bacteria in the digestive tract break down our food for us. If we didn't have them, we wouldn't be able to digest as much food as we used to.

Answer: Yogurt contains good bacteria.

Explanation: Taking antibiotics for a longer duration of time kills the good bacteria present in the the gut of the human being. The gut of the human being consists of good bacteria as well as bad bacteria.

The good bacteria present in the gut of the human beings helps in the digestion of the food. Yogurt is a good source of good bacteria as it contains lactobacillus which is known as good bacteria that keeps the gut healthy.

Describe pulmonary circulation pathway using the following terms: deoxygenated blood, left atrium, lungs, oxygenated blood, pulmonary arteries, pulmonary trunk, pulmonary veins, and right ventricle

Answers

Definition:
                  "The type of circulation pathway in which venous blood is passed
                   from the right atrium of the heart through the right ventricle  and 
                   pulmonary arteries to the lungs where it is oxygenated and its                             return via the pulmonary veins to enter the left auricle and                                                      participate in the systemic circulation".

Explanation:
                     There are two circulatory path in cardiovascular system namely pulmonary circulation and systemic circulation. Pulmonary circulation path allows for blood circulation through lungs for oxygenation while systemic circulation allows for transport of oxygenated blood to all parts of the body.

Pulmonary Circulation Pathway:
                                                      Pulmonary circulation pathway consist of:

1. Superior and inferior vena cava:
                                                       De-oxygenated blood from lower parts of the body enter to right atrium through inferior vena cava. Similary, deoxygenated blood from upper parts of the body enter to right atrium through superior vena cava.

2. Right atrium and right ventricle:
                                                          From right atrium the blood passes to right ventricle through tricuspid valve. 

 3. Pulmonary artery:
                                Afterwards, the blood enters the pulmonary artery via the pulmonary valve. The pulmonary artery divides into two arteries with one artery entering the right lung and the other artery entering the left lung. When the blood reaches the lungs through the left and right pulmonary arteries, it moves over alveoli via the capillary beds. 

4. Left atrium and left ventricle:
                                                 After the blood gets oxygenated, it moves back to the heart and this time moves into the left atrium, completing the pulmonary circulation path.
                        

Why is cell theory classified as theory and not a hypothesis

Answers

The cell theory is still a theory because there is still no proof of how the first cell was formed. Also, the cell theory isn't unanimously accepted worldwide.

What controls activities in the brain such as breathing?

Answers

the brain stem controls vital functions of the human body

As cold, briny water from the antarctic circulates to the equator, it warms and rises. as it does, this upwelling carries nutrients that produce ____ billion tons of phytoplankton that are eaten by fish and birds. those that are not eaten die, and fall back to the ocean floor, carrying nutrients with them.

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The answer is one (1) billion tons of phytoplankton at any one time. Annually, its recorded that there is approximately 45 billion tons of phytoplankton in the ocean. Other than being a source of food for fish, they are critical in the carb9n cycle. This phytoplankton incorporates 45–50 billion tons of inorganic carbon into their cells and are the largest source of atmospheric oxygen.
45 Billion Phytoplankton

Brackish water is water that has extra salt than original water. This may appear from the crossing of seawater by fresh water that may occur in brackish specimen aquifers.  The nutrients that produce 45 billion ton phytoplankton. The phytoplankton is bacteria that is a significant autotrophic element of the plankton community and a fundamental component of water that basin ecosystems. Though it is an essential source of food for larger animals as being the first form of food chain.

Decomposers are part of a special class of consumers called

Answers

saprophytic consumers
Saprophytic
Hope this helps

The release of __________ encourages sustentocytes to release __________. the release of __________ encourages sustentocytes to release __________. inhibin; testosterone luteinizing hormone; testosterone luteinizing hormone; androgen-binding protein follicle-stimulating hormone; androgen-binding protein

Answers

The release of follicle stimulating hormone encourages sustentocytes to release of androgen-binding protein. Androgen binding protein is synthesized by the sertoli cells in the testis. The glycoprotein binds specifically to testis, dihydrotestosterone and 17-beta-estradiol. Its production is stimulated by the follicle stimulating hormone.

Philippe bouchet and colleagues conducted a massive survey of marine mollusks on the west coast of new caledonia. twenty percent of the species found had only a single specimen collected. what does that suggest about the diversity of mollusks in this area?

Answers

The suggestion about the diversity of molluscs in the area is how many species from the twenty percent are probably rare. Biologists use different approaches to describe the levels of biological diversity in the marine environment.
One approach is quantitative ecologists and the other one is biogeographers who pool data on species.
Molluscs are phyla which are routinely considered in marine biodiversity surveys

Breast milk _____. is more likely than formula to produce allergies is deficient in iron and vitamin c provides antibodies to fight diseases upsets the baby's digestive system more than formula

Answers

Breast milk provides antibodies to fight diseases.   

Breast milk is produced by mammary glands in the breasts and its main function is feeding an infant. Breast milk is the primary source of nutrition for newborns. The composition of the milk includes immune-boosting white blood cells, as well as stem cells, which can help organs develop, antibodies, proteins, amino-acids, oligosaccharides, growth factors, hormones, enzymes, vitamins, minerals…

Final answer:

Breast milk provides antibodies to fight diseases, which are crucial for the infant's developing immune system

Explanation:

Breast milk provides antibodies to fight diseases, which are crucial for the infant's developing immune system. These antibodies are passed to the infant through breast milk in what is known as active immunity. The immunoglobulins in colostrum and breast milk help increase the newborn's immune defenses. Breast milk contains all the necessary nutrients and hydration that a growing infant requires for the first 4–6 months of life and is tailored to suit each stage of the newborn's development.

The composition of breast milk helps the newborn's digestive system to expel meconium and clear bilirubin and is generally less likely to upset the baby's digestive system than formula. Compared to cow's milk, breast milk has more appropriate levels of fat and lactose for an infant's needs and contains proteins that are easier for the infant to digest. Cow's milk contains more protein and minerals, which are difficult for an infant's immature digestive system to metabolize, and therefore, it should not be given to infants.

The renin-angiotensin system activates to restore fluid to a normal level when a person is dehydrated.

Answers

The statement is true.
Renin-angiotensin system will be activated when there is a loss of blood volume (or decrease of blood pressure, such as in haemorrhage or dehydration. Renin is secreted by kidneys directly into the circulation when the blood flow is reduced. Renin then stimulates conversion of angiotensinogen, released by the liver, to angiotensin I which will then be converted to angiotensin II by the angiotensin-converting enzyme (ACE) found in the lungs. Angiotensin II is a vasoconstrictor(increases the blood pressure) and also stimulates the secretion of the aldosterone from the adrenal cortex. Aldosterone increases the reabsorption of sodium and water into the blood and the excretion of potassium (to maintain electrolyte balance). This also increases blood pressure and retention of water.

The proper way to wash hands when handling foods is to:

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Use soap and scrub all over your hands....

A molecule called ___________ is responsible for the rbc's ability to transport oxygen and carbon dioxide.

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A molecule called haemoglobin is responsible for the RBC's ability to transport [tex] 0_{2} [/tex] and [tex] CO_{2} [/tex].

Hope it helped!

Explain how you could determine wheater seeds in packets of round pea seeds have a genotype rr or rr

Answers

I think you mean Round could be RR or Rr (round is dominant to wrinkled)
R=round
r=wrinkled
RR would be round phenotypically
Rr would be round phenotypically
To determine if they are RR or Rr you should perform a backcross with a wrinkled mutant!
I put a picture to demonstrate this.
If they are RR then if you cross with rr you would only get phenotypically Round pea plants.
If they are Rr then if you cross with rr you would get 50% round and 50% wrinkled. Any wrinkled? Definitely the heterozygote Rr!!

Julia plants three tomato plants in different types of soil to see which is best for gardening. All three tomato plants are the same variety. They are about the same size at the start of the experiment. Each plant receives the same amount of water each day. The independent variable is the

Answers

Final answer:

The independent variable in Julia's experiment is the type of soil. By planting three tomato plants in different types of soil and keeping all other factors the same, Julia can observe and compare the growth of the plants to determine which type of soil is best for gardening.

Explanation:

The independent variable in Julia's experiment is the type of soil. In her experiment, Julia is testing how different types of soil affect the growth of tomato plants. The independent variable is the factor that is intentionally changed by the experimenter, which in this case is the different types of soil. By planting three tomato plants in different types of soil and keeping all other factors the same, Julia can observe and compare the growth of the plants to determine which type of soil is best for gardening.

Final answer:

The independent variable in Julia's experiment is the type of soil, which is varied to observe its effect on the growth of tomato plants, with other factors like water and plant size being consistent.

Explanation:

In the context of the experiment described, the independent variable is the type of soil used for growing the tomato plants. An independent variable is the one that is changed or controlled in a scientific experiment to test the effects on the dependent variable. In Julia's case, she is using different types of soil to determine which one leads to the best growth for tomato plants, while keeping other factors such as the amount of water, the size and variety of the plants consistent. Gary's experimental setup also highlights the importance of controlling variables to ensure that the results reflect the effects of the independent variable, which in his experiment is the amount of sunshine. By maintaining consistent conditions such as the amount of water and plant food, as well as the size and type of pot, he aims to ensure that the differences in plant growth can be attributed to the sunlight exposure.

The ability of the heart and lungs to supply oxygen to the body is called

Answers

The answer for the above question is Cardiovascular fitness. It is the ability of the heart, lungs, and blood vessels to function efficiently when a person exercises. Cardiovascular system is the body system that includes the heart, blood vessels, and blood, and functions by transporting oxygen and nutrients to body cells and removing cellular wastes. Cardiovascular endurance on the other hand is the ability of the body to work continuously for extended periods of time. 

A woman who is on a low-carbohydrate diet for weight loss may have difficulty maintaining an adequate level of the b vitamins thiamin, riboflavin, niacin, and folate. what characteristic of her diet would cause this? exclusion of grain foods and cereals exclusion of fruits exclusion of dairy products exclusion of starchy vegetables

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exclusion of grain food and cereals.

Eye-movement desensitization reprocessing is primarily used for treatment of ________. question 6 options:

Answers

Post-traumatic stress disorder

Eye movement desensitization and reprocessing (EMDR) is a form of psychotherapy primarily used for treatment of post-traumatic stress disorder. This form of treatment helps trauma victims to remember distressing past encounters and to acquire new understanding of the events.






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