A cell spends approximately _____ of its cycle in the M phase.
How is the formation of the spindle during mitosis and meiosis i different?
Which of the 4 general gastric cell types are classified as enteroendocrine cells?
Which of these activities are ways people degrade commons? Select the two correct responses.
A. Farmers allow livestock to overgraze federal pastureland.
B. Rangers limit the number of visitors to a nature preserve.
C. Rangers allow native plants to grow unchecked in a park.
D. Hunters hunt a valued species to extinction.
E. Politicians protect the habitat of an endangered species.
The correct answer is option , A and D
Here, the word common refers to the “Earth” and “its precious resource”. If a farmer allows overgrazing of pastureland, the land gets exposed to extreme weather condition and thus easily get eroded which could even lead to desertification. Also when a hunter kills a valued species that is at the verge of extinction, the ecosystem gets disturbed as the connecting link gets extinct which also disturbs the food chains and stability of the natural food web.
There are different kinds of agricultural activities. The activities that are ways people degrade commons are;
Farmers allow livestock to overgraze federal pastureland. Hunters hunt a valued species to extinction.What happens when one allow livestock to overgraze an area?In course of overgrazing, animals are known to limit or reduce the plant leaf areas, and thus it lowers plants' ability to trap sunlight and grow new set of leaf material.
This brings about a reduction and so there is slows down of plant regrowth and this can lead to the death of the plant.
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Marvin is suffering from the early stages of alzheimer's disease. which component of his working memory is most likely to be affected?
a. all of these are equally affected
b. the phonological loop
c. the central executive
d. the visuospatial sketch pad
Which is moved by transport proteins? please help
water
carbon dioxide
oxygen
calcium
Calcium is moved by transport proteins across cell membranes, while water, carbon dioxide, and oxygen can pass freely without such assistance.
Among water, carbon dioxide, oxygen, and calcium, calcium is the molecule that is moved by transport proteins across cell membranes. Water, carbon dioxide (CO2), and oxygen (O2) can move freely through cell membranes due to their small size and the nature of the lipid bilayer. However, calcium ions, which are charged particles, cannot easily pass through the plasma membrane without assistance. They require specific carrier proteins to facilitate their movement, often in a process that involves changes in the shape of the transport protein. This can be a passive process, as in facilitated diffusion, or an active process that requires energy, commonly in the form of ATP or an existing gradient of other ions or molecules.
What is the difference between lipid measurement (cholesterol) and dm-4: lipid measurement?
Suppose that goats have one gene that codes for color, where a is brown and a is white. the goats also have another gene that codes for height, where b is tall and b is short. if these two genes are unlinked, what is the probability that a cross between aa bb × aa bb parents will produce two out of six offspring that are brown and short? enter your answer as a decimal, rather than as a percentage.
The probability that a cross between aa bb imes aa bb parents will produce two out of six offspring that are brown and short is 0.0156.
In order to solve for the probability of obtaining a specific number of offspring with certain traits, we need to use the binomial probability formula. Since the traits are unlinked, the probability of an offspring being brown (aa) and short (bb) is the product of their separate probabilities. The probability of an offspring being brown (aa) is rac{1}{4}, as both parents are aa, and the offspring must inherit an a allele from each parent. Similarly, the probability of an offspring being short (bb) is also rac{1}{4}. Thus, the individual probability for an offspring to be both brown and short is (rac{1}{4}) imes (rac{1}{4}) = rac{1}{16}. To find out the probability of having exactly two such offspring out of six, we apply the binomial probability formula inom{n}{k}p^k(1-p)^{n-k}, where n is the total number of offspring (6), k is the desired number of offspring with the traits (2), p is the probability of one offspring having the traits (rac{1}{16}), and 1-p is the probability of one offspring not having the traits (rac{15}{16}). Plugging in the values we get inom{6}{2}(rac{1}{16})^2(rac{15}{16})^4, which calculates to 0.0156.
What causes the Moon to orbit around the Earth?
The number of individual hair strands on 1 square inch of scalp is called:
What is another name for skeletal muscle? involuntary muscle connective muscle voluntary muscle interactive muscle reactive muscle?
Skeletal muscle, also known as voluntary muscle, is the type of muscle that we can consciously control. Unlike involuntary muscles, voluntary muscles respond to conscious signals from the brain.
Explanation:The other name for skeletal muscle is voluntary muscle. This term arises from the control we have over these muscles - we can consciously decide to move them. Unlike involuntary muscles (like the heart), which operate without conscious control, voluntary muscles (like those in the arms and legs) respond to conscious signals from the brain. For example, if you decide to lift an object, your brain sends a signal to the specific voluntary muscles in your arm and hand, causing them to contract and facilitate the movement.
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Which scientist(s) suggested for the first time that the proportion of adenine and guanine differs from one species to another?
Erwin Chargaff, an Austrian-American biochemist, was the scientist who first observed that the proportion of adenine (A) and guanine (G) in DNA varies between species.
What is base pairing?The specific pairing of the nitrogenous bases (adenine, thymine, guanine, and cytosine) that comprise the two complementary strands of DNA is referred to as base pairing.
The Austrian-American biochemist Erwin Chargaff was the first to notice that the proportion of adenine (A) and guanine (G) in DNA varies between species.
He published a paper in 1950 describing the base composition of DNA in various species, which became known as "Chargaff's rules."
He discovered that the amount of A in each species always equals the amount of T (thymine), and the amount of G always equals the amount of C (cytosine), but the proportions of A+T and G+C vary from species to species.
Thus, the scientist that suggested for the first time that the proportion of adenine and guanine differs from one species to another was Erwin Chargaff.
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WILL GIVE A BRAINLEST
Grasses can withstand the fires common to grasslands because grasses _____.
are full of moisture
store water in their leaves
grow thickly together
have extensive root systems
Matthew decided he wanted to hike up Mount Everest. On his way to the top, it began to snow and the temperature dropped to -10°F. Matthew forgot to wear a heavy jacket so his body began to shiver beyond control. In this case, Matthew's body shivering is the ________ to a drop in temperature.
A. reflex
B. stimuli
C. response
D. environmental condition
ANSWER THIS A.S.A.P
The lymphatic vessels run from ________ to ________
Answer:
The first thing I did was to be a part of the world and the other
Hemophilia is an x-linked recessive trait. in a family, the mother knows she is a carrier and the father does not have the disease. the family is expecting triplets. they are worried about having boys that would have 50% chance of being affected. what is the probability of having one or more than one boy? consider two scenarios: if the triplets are monozygotic and if the triples are trizygotic
Antimicrobial x targets a specific protein in the cytoplasm of the bacterial cell, causing the bacteria to stop growing, but does not kill them. a few bacteria start to grow in the presence of antibiotic x. analysis of the bacteria that can now grow shows that they have changed the shape of the target for antimicrobial x. what conclusion can be made?
Final answer:
The bacteria that can grow in the presence of Antimicrobial X, despite its action, indicate the development of antimicrobial resistance through structural changes in the drug's target, highlighting evolutionary adaptation under selective pressure.
Explanation:
The conclusion that can be made from the scenario where Antimicrobial X targets a specific protein in the cytoplasm of the bacterial cell, causing the bacteria to stop growing but not killing them, and a few bacteria start to grow in presence of the antibiotic by changing the shape of the target, is that these bacteria have developed a form of antimicrobial resistance. This resistance occurs through a structural change in the target protein, which prevents the antimicrobial from binding effectively. Such a mutation allows these bacteria to survive and reproduce in the presence of the antimicrobial, a concept known as selective pressure. It is a clear example of how bacterial populations can evolve resistance to specific antibiotics or antimicrobials through genetic changes that alter drug targets.
The only group with an endoskeleton is
A) The vertebrates
B) the mollusks
C) arthropods
D) vertebrates
Answer:
a and d
Explanation:
After a fire in an isolated farmhouse, firefighters found several small propane tanks and other strong evidence of a recently abandoned "meth lab." if what the firefighters found was a "meth lab," we would say:
What are the basic building blocks of DNA and RNA?
The answer would be nucleotides
Brown eyes (b) are dominant over blue eyes (b) and straight tails (t) are dominant over curly tails (t) in opossums. a brown-eyed, straight-tailed opossum male was mated to a tester female. the offspring were: 3 brown eyes and straight tails 2 brown eyes and curly tails 4 blue eyes and straight tails 3 blue eyes and curly tails what was the genotype of the male?
list three substances that need to be transported into all kinds of animal cells in order for them to survive
Animal cells require oxygen for cellular respiration, glucose for energy, and amino acids for protein synthesis. These essential substances must be transported into cells to maintain cellular functions and ensure the survival of the cell.
Explanation:Three substances that need to be transported into all kinds of animal cells for them to survive are oxygen, glucose, and amino acids.
Oxygen is crucial for the process of cellular respiration, where it is used to help convert glucose into adenosine triphosphate (ATP), which is the energy currency of the cell. Glucose is a simple sugar that serves as a primary energy source for cells. Lastly, amino acids are the building blocks of proteins and are essential for constructing cellular structures and facilitating various metabolic functions.
Without these key substances, animal cells cannot perform necessary functions such as energy production, building and repairing tissues, and maintaining homeostasis. Animal cells have specific mechanisms, including active transport and facilitated diffusion, to ensure the proper intake of these molecules.
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Thylakoids are coin-shaped membrane-enclosed compartments inside the ________
________ ions are produced within the parietal cells and transported across the apical membrane via an active transporter while, at the same time, ________ moves across the apical membrane through ion channels.
Many plants will grow from cuttings. The cutting develops a new root system and becomes a clone of the parent plant, but an independent new plant. This type of reproduction is called A) sexual. B) budding. Eliminate C) asexual. D)
How can human health be affected by changes in the air quality
Domain is a newer portion of the classification system that includes Eukarya and Prokarya. What information most likely dictated that this new level be created? New data about the geographic location of organisms New data about evolutionary relationship between organisms New data about the behavior and interactions of organisms in the wild New data about the physical appearance of organisms
B is the right answer for e2020
New data about evolutionary relationship between organisms
Explanation;Classification involves grouping based on their similarities and differences. The most useful way of classifying organisms is by use of evolutionary relationships which results to an organized classification of organisms.Knowledge on evolutionary relationships about different organisms has greatly changed over time and therefore relationship among organisms, grouping of organisms has continually been revised as a result of availability of new information concerning organisms.Therefore, it is this new data or information about evolutionary relationships among organisms that prompted revision and it was seen necessary to add a level in the hierarchy of classification.What is the definition of the word common in environmental science?
A. A worthless resource B. A shared resource C. A typical resource D. An unusual resource
The answer is definitely B.) A Shared Resource
Answer: The correct answer is -
B. A shared resource.
In environmental science, a resource can be described as substance/ material (such as food, water, light, nutrients) that are essential for the survival, growth, and reprodution of living organisms.
For instance, all plants share same resources that are light, nutrients (like nitrogen, phosphorous, sulfur, potassium, oxygen), and water for their proper growth and reproduction.
In other words, certain resources are being shared by many organisms.
Thus, option B) is the right answer.
Based on samuel's alcohol consumption, which b vitamin, severe deficiencies of which are called wernicke-korsakoff syndrome, is he lacking?
A program to reduce and control the population of sea lampreys was likely started in ?