Biology College

What often results in a woodland without frequent fires?
A.A predominance of pine trees
B.A predominance of fast-growing trees
C.Barren land
D.An understory of oak trees

Answers

Answer 1
The answer is D. The understory oak trees are lower than the general canopy of the woodland. Therefore they are significant, especially dead and dry oaks, in the ‘jumping’ of fire from one point to another during wildfires. They are a major aggravator of wildfires in California after they are attacked by Sudden Oak Death (SOD).





Answer 2

Answer:

Option D, An understory of oak trees

Explanation:

The State and transition models of the oak woodlands are depended on the fire cycle. It is also claimed by researchers that forest fire (disturbances) are important  determinants of the patchy distribution of these vegetation types in woodland.

A woodland with no or without frequent fires has an understory of oak trees comprising of native annual and perennial  trees, grasses and forbs. Most of these native tree , grass, forbs and shrub species vary in amount due to  inadequate fire frequency.

Hence, option D is correct

Related Questions

Which is not a density-dependent factor limiting population growth?

A) predators
B) drought
C) food availability
D) living space

Answers

I am pretty sure the correct answer is C.
It makes the most sense out of all of the answers.

The correct answer is B. Drought

Explanation:

In biology, density-dependent factors are factors that directly depend on the population of organisms, this includes factors such as predators, diseases, resources availability or space that affect the size of a population by limiting it. For example, more organisms lead to little food availability and this leads to a decline in the number of organisms limiting population growth. On the other hand, factors that are not density-dependent are not related to the size of a population but can affect populations of any size. Considering this, the one that is not a density-dependent factor is drought as this is a natural disaster that can affect any population and is not related to the size of populations.

Angela works at a nursing home and notices some distinct differences among her patients. which of her patients is least likely to have alzheimer's?

Answers

The correct answer is: John who has no genetic predisposition and goes dancing with his friends twice per week.
Alzheimer's disease is a neurodegenerative disease and the most common type of dementia. Patients suffering from this type of dementia exhibit problems with memory, cognition and behaviour. One of Alzheimer's risk factors is family history and genetic predisposition. Several genes have been found to increase the risk of developing Alzheimer's. Physical activity, such as regular dancing for example, stimulates the mind and can protect from dementia. Therefore, John is the least likely to develop Alzheimer's disease.

The recent acts of activists intent on destruction of research plots included plants altered by molecular as well as classical genetic techniques. is it possible to distinguish between plants altered by classical genetics and those altered by modern techniques? if it is possible how is it done?

Answers

Some GMO plants have been engineered to be have characteristics not related to appearance, such as drought resistance for example. Therefore, one would not be able to detect between these GMOs and non-GMOs except by examining their DNA. However, other GMOs have been engineered to have physical characteristics that are appealing to consumers, such as exceptionally colourful or large fruit. These GMOs would be easier to distinguish from non GMOs.
Final answer:

Yes, it is possible to distinguish between plants altered by classical genetics and those altered by modern techniques by analyzing specific markers and using DNA analysis.

Explanation:

Yes, it is possible to distinguish between plants altered by classical genetics and those altered by modern techniques. One way to do this is by analyzing the presence of specific markers that are associated with each method. For example, classical genetic techniques often result in random insertions or deletions in the genome, which can be identified through DNA sequencing. On the other hand, modern techniques such as genetic engineering involve the precise insertion of specific genes into the plant's genome, which can also be detected through DNA analysis. Scientists can use various molecular biology techniques to analyze the DNA of plants and determine whether they have been altered using classical or modern methods.

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How many crickets will a lizard need to consume if: There are 150 dietary calories in 100 grams of cricket. Crickets weigh 1.0 grams each. It takes 0.5 dietary calories for the lizard to do one pushup. The lizard spends 60 minutes a day doing pushups The lizard does these pushups every day for 30 days during the breeding season The lizard does push-ups at a rate of 10 push ups/ 30 seconds.
4500
6750
9000
12000

Answers

The answer to your question is 12000

The stage in which an ecosystem rapidly gains biomass through the introduction of plants with woody stems is called?

Answers

The answer is "aggradation."

The answer is Aggregation.

During plant succession new community gets established at an area which had been uninhabited. The community which gets established at the site is called climax community. The aggregation is the stage during which there is increase in population of the species which has become established in the area. The shrubs replace the small herbs. This adds up biomass by introduction of more plants with woody stem. This also proves as a source of food for future inhabitants.


He process of dna replication occurs just before ______________.
a.cytokinesis
b.replication
c.cell division
d.nucleosynthesis reactivate

Answers

c. cell division is the answer

A medical researcher is studying the spread of a virus in a population of 1000 laboratory mice. during any week, there is a 70% probability that an infected mouse will overcome the virus, and during the same week there is a 40% probability that a noninfected mouse will become infected. two hundred mice are currently infected with the virus. how many will be infected next week and in 3 weeks? (round your answers to the nearest whole number.)

Answers

A medical researcher is studying the spread of a virus in a population of 1000 laboratory mice. during any week, there is a 70% probability that an infected mouse will overcome the virus, and during the same week there is a 40% probability that a noninfected mouse will become infected. two hundred mice are currently infected with the virus. how many will be infected next week and in 3 weeks? (round your answers to the nearest whole number.)

At the start of the experiment, 200 mice are infected. The population is 1000 mice. At the end of week one, 30% of the infected mice will still be infected i.e. 60 mice. 40% of the original 800 uninfected mice will now also be infected, i.e., 240 mice. That leaves 300 infected mice and 700 uninfected mice.

Using the same calculations, by week two the infected mice are 90 + 280 = 370

By week three the infected mice are 111 + 252 = 363

Calculate the number of mice infected with the virus next week and in 3 weeks based on given probabilities and the initial infected count.

The number of infected mice next week:

Initially infected mice = 200

Number of mice overcoming the virus = 0.7 * 200 = 140

Number of mice getting infected = 0.4 * (1000 - 200) = 320

Number of infected mice next week = 140 + 320 = 460

The number of infected mice in 3 weeks:

Number of mice next week = 460

Number of mice overcoming the virus = 0.7 * 460 = 322

Number of mice getting infected = 0.4 * (1000 - 460) = 216

Number of infected mice in 3 weeks = 322 + 216 = 538

A young man presents reporting diarrhea, fecal urgency, and weight loss. his stool is light-coloured and malodorous, and it tends to float and be difficult to flush. he has also noted tender, red bumps on his shins and reports pain and stiffness in his elbows and knees. sigmoidoscopy reveals discontinuous, granulomatous lesions; no blood is detected in his stool. which diagnosis would his care team first suspect?

Answers

Based on the salient features and the laboratories of this patient, this is a case of Crohn's disease. Crohn's disease is type of chronic inflammatory bowel disease or IBD along with ulcerative colitis. Crohn's disease usually presents with diarrhea, abdominal pain, and significant weight loss. Pathologically, it is characterized by "skip-lesions" or discontinuous granulomatous that occurs on all layers of the bowel (transmural); with the involvement of the whole gastrointestinal tract. Patients with Crohn's disease have a significant risk in developing colorectal cancer.

Which component of Earth's atmosphere is responsible for absorbing ultraviolet radiation? A. OZone B. Nitrogen C. Water vapor D. Oxygen

Answers

a) the ozone layer, it is the one that takes the uv light from the sun
A)Ozone
The ozone layer contains a high concentration of ozone. Ozone absorbs most of the ultraviolet radiation reaching the Earth. 

Sometimes a new experimental result may seem to go against a well-established scientific theory. Which statement BEST describes a scientific response to such a situation?
A) The old theory has to be discarded in favor of a new theory.
B) The result should be altered so that it matches the established theory.
C) New results should be verified by more experiments before it is accepted.
D) An established theory is based on evidence, so the new results must be incorrect.

Answers

C.) New results should be verified by more experiments before it is accepted

The violation of a statute that proximately causes an injury is termed as​ ________.

Answers

negligence I hope this answer helps

The process of succession is necessary to maintain and establish stable communities.

Please select the best answer from the choices provided

T
F

Answers

I believe it is True.

Correct answer: True

Ecological succession is the process by which the structure of a biological community change after a long period of time and forms a climax community. It is a stable community that is formed by the process of ecological succession.

Primary succession is the succession that occurs where the soil is not able to support any life and the secondary succession occurs where the previous community lives but it was disturbed by the community that eliminates all the nutrient from the soil.

Hence, correct answer would be true.





If a protein is denatured, what level of protein structure would remain intact

Answers

The level of protein structure that will remain intact is the primary structure of proteins that corresponds to the number of amino acids and the peptide bonds. The secondary structures (alpha helices or beta sheets), the tertiary structures (whether globular or fibrous), and the quaternary structures (multiple subunits) will all be denatured.

The primary structure of a protein remains intact when it is denatured, while the secondary, tertiary, and quaternary structures are disrupted. Denaturation can be caused by changes in temperature, pH, or chemicals, and sometimes it is reversible. Proteins need to be properly folded to function, and chaperones can assist in the folding process.

If a protein is denatured, the level of protein structure that would remain intact is the primary structure. Denaturation affects the secondary, tertiary, and quaternary levels of protein structure, whereas the primary sequence of amino acids held together by peptide bonds is preserved. This means that while the overall shape and function of the protein may be lost, the sequence of amino acids remains unchanged.

Denaturation can occur due to various factors, such as changes in temperature, pH, or exposure to chemicals. It is often reversible, allowing the protein to potentially refold and regain its function once the denaturing agent is removed. However, in some cases, denaturation can be irreversible, resulting in permanent loss of protein function, as in the cooking of egg whites where the albumin protein changes from clear to opaque.

Understanding protein folding is important since proper folding is essential for proteins to function correctly, and when denaturation occurs, this folding is disrupted. Some proteins are aided by chaperones to fold correctly, emphasizing the importance of correct protein structure for biological processes.

Ocean currents are caused by all of the following except:

underwater landslides
surface winds
tidal fluctuations
density contrasts in seawater

Answers

The answer is A: 'underwater landslides '. Underwater landslides would cause a wave, rather than a current. Ocean waves are caused by energy passing through water. An ocean current on the other hand is a mass of water moving in a definite direction through another mass of water. This movement is driven by forces that could be derived from surface winds, tidal fluctuations and seawater density contrasts. 

Several fish species became extinct millions of years ago. The graphs provided below show the distribution of fossils of these fishes as they occur in several undisturbed layers of sedimentary rock observable in a cliff face. Respond to ALL 4 PARTS below: Explain why the distribution of the fossils in figure 1 support the hypothesis that the extinction of these species was a result of a sudden environmental change. Describe an environmental change that could have produced this kind of fossil distribution. Explain why the distribution of the fossils in figure 2 supports the hypothesis that the extinction of these species was a result of a gradual environmental change. Describe an environmental change that could produce this kind of fossil distribution.

Answers

1. Explain why the distribution of fossils in Figure 1 supports the hypothesis that the extinction of these species was the result of a sudden environmental change.
This hypothesis can be supported because all the fossils accumulate almost at the same age of the rock layer. That is, all the fossils died almost at the same time.

2. Describe an environmental change that could have produced this type of fossil distribution.
Good examples of sudden environmental changes are volcanoes. When a rash occurs, the whole environment suddenly changes for different reasons such as ash or lava, and all living things can die immediately or in a few years by the change in the ecosystem.

3. Explain why the distribution of fossils in Figure 2 supports the hypothesis that the extinction of these species was the result of a gradual environmental change.
This is because the fossils accumulate at different ages of the rock layer, that means, the species dying over time. The gradual descent of the fossils is observed.

4. Describe an environmental change that could produce this type of fossil distribution.
For example, if a climate change occurs - the temperature increases or decreases - it can cause the trees or plants to die and all the animals in the ecosystem also die when they have no food. But this process is sequential, so the change can take years, centuries or even millions of years.

I hope this can help you.

When energy is used, ATP molecules convert to ADP molecules. This process is called _____. dephosphorylation phosphorylation oxidation diffusion

Answers

Hey there!

 This process is called phosphorylation. When energy is used, ATP molecules convert to ADP molecules.

Your answer is the 2nd option.

Hope this helps you.
Have a great day!

Answer:

B. Phosphorylation

Hope this helps!

What is the first step for managing innovation during discontinuous change?

Answers

The design iteration.

The first step in managing innovation during discontinuous change is to:  1. Recognize the signals of change and emerging trends. 2. Analyze and interpret these signals to understand their implications. 3. Develop strategies to adapt to or leverage the discontinuous change through innovation.

The first step for managing innovation during discontinuous change is to recognize the signals of change and understand the emerging trends.

 To effectively manage innovation in the face of discontinuous change, it is crucial to be vigilant and sensitive to early indicators of shifts in the business environment. These signals could come from various sources, such as changes in customer preferences, technological advancements, new regulatory requirements, or emerging competitive threats. By recognizing these signals early on, organizations can begin to assess the potential impact of these changes on their current operations and strategic direction.

Once signals are recognized, the next step is to analyze and interpret these trends to gain a deeper understanding of their implications. This involves gathering data, conducting market research, and engaging in strategic conversations with stakeholders, including customers, suppliers, and industry experts. The goal is to develop a comprehensive view of the changing landscape and to identify both the challenges and opportunities that it presents.

After a thorough analysis, organizations can then start to envision potential future scenarios and develop strategies to adapt to or capitalize on the discontinuous change. This may involve pivoting business models, investing in new technologies, re-skilling workforces, or exploring new markets. Innovation management in this context is not just about reacting to change but proactively shaping the organization's future by leveraging innovation to stay ahead of the curve.

A liver biopsy of a four-year-old boy indicated that the fructose-1,6-bisphosphatase enzyme activity was 20% of normal. the patient's blood glucose levels were normal at the beginning of a fast but then decreased suddenly. pyruvate and alanine concentrations were also elevated. explain the reason for this symptom.

Answers

Fructose-1,6-bisphosphatase is a key enzyme in glycolysis and gluconeogenesis; but in this case, the function of this enzyme in gluconeogenesis is more significant. Gluconeogenesis is reversal of glycolysis by bypassing irreversible reactions of glycolysis and making use of reversible reactions of glycolysis. In turn, compounds such as pyruvate, alanine, and glycerol will eventually be converted back to glucose. In the liver, this glucose can be released in the bloodstream in response to hypoglycemic states (i.e. fasting states). 

In the deficiency of fructose-1,6-bisphosphatase, gluconeogenesis will be impaired. Therefore there will be an abnormal decrease in blood glucose levels during fasting. Substrates for gluconeogenesis (i.e. pyruvate and alanine) will then accumulate in the body causing its levels to increase.
Final answer:

The low fructose-1,6-bisphosphatase enzyme activity in the liver biopsy of the four-year-old boy leads to a decrease in glucose production during fasting. This deficiency impairs the conversion of fructose-1,6-bisphosphate to fructose-6-phosphate, causing a sudden decrease in blood glucose levels. The elevated pyruvate and alanine concentrations indicate the impairment of glycolysis.

Explanation:

The fructose-1,6-bisphosphatase enzyme plays a crucial role in the breakdown of glucose during fasting. It converts fructose-1,6-bisphosphate into fructose-6-phosphate, an important step in glycolysis. In this case, the liver biopsy showed that the enzyme activity was only 20% of normal, leading to a decrease in glucose production.

Normally, during fasting, glucose is released from glycogen stores in the liver to maintain blood glucose levels. However, with reduced fructose-1,6-bisphosphatase activity, the body's ability to produce glucose is impaired, causing a sudden decrease in blood glucose levels.

This deficiency also leads to the accumulation of pyruvate and alanine because the conversion of fructose-1,6-bisphosphate to fructose-6-phosphate is compromised. These elevated concentrations further indicate the impairment of glycolysis.

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To what part of a plant does the stem deliver water and nutrients?

Answers

The water usually goes to the roots of a plant and the nutrients go to the leaves

Meteorologists draw lines called ______ on weather maps to connect locations with the same air pressure.

Answers

The correct answer is isobar.  

The isobars refer to the lines of constant pressure. It is a line drawn on a map of a weather linking the points of equivalent pressure. The isobars are produced from mean sea level pressure reports and the values of pressure are illustrated in millibars.  

The isobars help in demonstrating that how pressure are changing over space and so assist in illustrating the large-scale weather patterns across a region on the map.  


An appropriate frequency for a cardiorespiratory endurance program is _____ times per week.

Answers

The appropriate frequency for a cardiorespiratory endurance program is 3-5 times per week. The current recommendations for achieving cardiovascular fitness is moderate exercise around 3-5 times per week as this can achieve the highest level of sympathetic activity that can increase cardiovascular fitness without the consequential overfatigue that can result from exercise related injuries. 
Final answer:

A suitable frequency for a cardiorespiratory endurance program is three to five times per week.

Explanation:

A suitable frequency for a cardiorespiratory endurance program depends on various factors, including the individual's fitness level and goals. However, a general guideline would be to aim for a minimum of three to five times per week. This allows for enough regular exercise to challenge and improve the cardiovascular and respiratory systems.

By engaging in regular cardiorespiratory exercise, such as running or swimming, the heart rate increases and the body becomes more efficient in delivering oxygen to the muscles. This leads to improved endurance and overall cardiovascular health.

It is important to note that individuals should consult with a healthcare professional or certified fitness trainer to determine the most appropriate frequency and intensity for their specific needs.

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Frogs lay thousands of eggs because many eggs die. This is a behavior is an example of

Answers

Overproduction. I'm typing random stuff cause brainly makes me xD
Overproduction it must act on structure trail

Which of the below organisms does NOT have a cell wall as part of their structure?
A.Oak Tree
B.Salmonella Bacteria
C.Seaweed
D.Turtle

Answers

its B- Bacteria doesn't have a cell wall... some do, but if its Salmonella its No
The answer is B, Salmonella does not have a cell wall. And while most animals don't either, turtles have one in their shells.

Which part of a tree always grows down because of gravity?

Answers

The roots always grow down into the ground.
the roots of the tree

Andra is having a hard time remembering all the parts of a microscope. To help her label a microscope diagram on her test, she could use: A. keywording B. repetition C. categorization D. visualization

Answers

the answer is D. visualization 

Answer:

D. visualization

Explanation:

A visualization techniques is used to remember things through image perception. It helps to realize the things on ground and correlate with its guided imagery. Through the minds’s eye an individual focuses on actual images. Here,  if  instead of teaching  microscope through diagrams in book, Andra is shown the real microscope and all its parts better explained, then she would be able to remember the tings for a very long period of time.

The third body, the apollo spacecraft, is assumed to have

Answers

It is assumed to have a negligible mass compare with the two bodies. Its position is an undetermined function of time. The spacecraft position requires system of differential equations that was derived from the Newton's laws of motion and the inverse square law of gravitation. This is a three body system where a small mass orbits the two other bodies with much larger masses.

Which term describes materials that have large and connected pores, such as sand and gravel

Answers

The answer is Permeable.\
The answer to your question is Permeable

In mantle convection currents, hotter rock moves _______, while cooler rock moves _______.

Answers

Hey there!

In mantle convection currents, hotter rock moves upward, while cooler rock moves downward. You can think of it as a hot rock moves up, while a cold rock moves down.

Hope this helps you.
Have a great day!

Answer:In mantle convection currents, hotter rocks move ___upward___, while cooler rocks move ____downward____

Explanation:

The site where the earliest known monkeylike haplorrhine fossils were found is called the __________ depression.

Answers

The answer is the Fayum Depression in Egypt. This region has yielded fossils for at least 17 genera of fossil primates over the last 90 years. These fossils are between 28 to 37 million years in age, and the record indicates that there was a diverse range of anthropoid primates that lived in this area during this time.

How do the finger-like projections facilitate the absorption?

Answers

Finger- like projections facilitate absorption in the following ways;
a) They increase the surface area of the organ eg. small intestines to allow more area of nutrients to be absorbed. The larger the surface area the more nutrients are absorbed.

b) They contain many capillaries which helps to increase the rate of nutrients absorption in the small intestines.
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What is the general term for the sequence 1, 6, 11, 16 Read the excerpt below and answer the question."First of all, he said, if you can learn a simple trick, Scout, youll get along a lot better with all kinds of folks. You never really understand a person until you consider things from his point of view" Sir? until you climb into his skin and walk around in it. What word might best describe the construction of the sentences above?A clippedB ornateC conversationalD simplistic Describe the acceleration of your bicycle as you ride it from your home to the stoe find the arithmetic mean an of an-1 = 3.9 and an+1 = 7.1a. 11b. 5.5c. 3.7d. 1.6 Which memory system provides us with a very brief representation of all the stimuli present at a particular moment? A patient who has been diagnosed with tuberculosis states, "i am not taking my medication, because i cannot afford it." which ethical practices does the nurse demonstrate by implementing a social service consult to assist the patient in obtaining the medication needed for treatment? select all that apply. Reba dixon is a fifth-grade schoolteacher who earned a salary of $38,000 in 2017. she is 45 years old and has been divorced for four years. she receives $1,200 of alimony payments each month from her former husband. reba also rents out a small apartment building. this year reba received $30,000 of rental payments from tenants and she incurred $19,500 of expenses associated with the rental. reba and her daughter heather (20 years old at the end of the year) moved to georgia in january of this year. reba provides more than one-half of heather's support. they had been living in colorado for the past 15 years, but ever since her divorce, reba has been wanting to move back to georgia to be closer to her family. luckily, last december, a teaching position opened up and reba and heather decided to make the move. reba paid a moving company $2,010 to move their personal belongings, and she and heather spent two days driving the 1,426 miles to georgia. during the trip, reba paid $200 for lodging Which of these statements is true for restriction enzymes? each restriction enzyme is able to make a staggered cut at its recognition site. a given restriction enzyme will always recognize the same dna sequence, but it will cut differently depending on the species of origin of the dna. a different restriction enzyme must be used to open the vector dna than to excise the gene sequence to be cloned. any restriction enzyme can cut any piece of dna. restriction enzymes are useful in genetic engineering when they make staggered cuts in dna? What is the length of YX? Enter your answer as a decimal in the box. Round your final answer to the nearest hundredth. m_https://static.k12.com/nextgen_media/assets/8107298-NG_GMT_SemB_10_UT_06.png' simplify 2d(3) expression solve for fd=16ef^2 Read this excerpt from"The World on Turtle's Back."The birds of the sea joined together to save the woman and they broke her fall. The great sea turtle floated in the ocean and received the woman on his back without harm. The frightened woman looked around and all she could see was water and sky. She felt helpless, but the animals were determined to save her. She told them that if they could find some soil, she could plant the roots from the Great Tree that were still tangled in her hands.Based on the animals' behavior toward the woman, it is reasonable to conclude that the animalswere frightened by a creature they had never seen.felt compassion for the woman because she was scared.were hoping to live on land that the woman would create.wanted the roots from the sacred Great Tree. Among 81678167 cases of heart pacemaker malfunctions, 457457 were found to be caused by firmware, which is software programmed into the device. if the firmware is tested in 33 different pacemakers randomly selected from this batch of 81678167 and the entire batch is accepted if there are no failures, what is the probability that the firmware in the entire batch will be accepted? is this procedure likely to result in the entire batch being Traditional TV families consisted of one mother, one father and their children. This type of family structure is called a/an _______ family. A. extendedB. polygamousC. residentialD. nuclear He definition "'oxygen' means an element having an atomic weight of 8 and an atomic number of 16" is an example of: According to osha regulations, if the load on a forklift blocks the forward view, what action should be taken What type of reaction is Na2S (I) + CdNO3 (I) => CdS (s) + 2NaNO3 (I) A. Double-Displacement B. Single-DisplacementC. DecompositionD. Synthesis A skier is gliding down a slope at a constant speed. what energy transformation is taking place? How do I double the volume of a pyramid Which rhetorical element is associated with the audience?A.ethosB.logosC.pathosD.syllogism