If you know nothing else about an organism except it's scientific name, can you immediately determine what genus and family it is in?
Answer:
You can determine which genus and family the animal belongs to because its scientific name was created using its background.
(Remember, any organism's scientific name will be in the form of Genus, species).
Answer: yes you can.
Explanation: because (for example: crovus.) It is a crow, and we know that a crow is a bird, it is black, has a beak, etc. So yes u can.
A bird species known as the cattle egret is often found near farms in wet areas. The bird waits, sometimes even perched on a cow's back, until the cow kicks up a frog or fish while it walks. Then, the bird strikes and eats the exposed prey. This is an example of what kind of feeding relationship? A. Parasitic B. Mutualistic C. Herbivorous D. Detritus
Answer:
mutualistic
Explanation:
the egeret is dependent on the cow to kick up the frogs or fish
Answer:
B. Mutualistic
Explanation:
Cattle egret and grazing cattle exhibit close association. Egrets always forage close to the grazing cattle since the cattle stir up the vegetation while moving. This flushes out the insects from the vegetation and egrets feed on them. Without a grazing cattle, egrets find it difficult to locate and catch the insects. Since egrets are benefited from the association, it is mutualism.
Which of the following is an example of alternation of generations? Which of the following is an example of alternation of generations? A diploid cell divides by mitosis to produce two diploid daughter cells, which then fuse to produce a tetraploid cell. A haploid mushroom produces gametes by mitosis, and the gametes undergo fertilization, which is immediately followed by meiosis. A diploid animal produces gametes by meiosis, and the gametes undergo fertilization to produce a diploid zygote. A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).
Answer:
A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).
Explanation:
Alternation of generation is a process that occurs in plants and refers to change from sexual haploid to asexual diploid stages and vice versa.
Gametophyte is haploid stage ( n chromosomes), alternates with a sporophyte, which is diploid ( 2n chromosomes). A mature sporophyte produces spores by meiosis, (reduction cell division) which reduces the number of chromosomes to half, from 2n to n (diploid to haploid).
The alternation of generations refers to the cycle in which a plant alternates between a diploid phase (sporophyte) and a haploid phase (gametophyte). The sporophyte produces haploid spores by meiosis, that grow into gametophytes, which produce gametes by mitosis. These gametes fuse to form a diploid zygote that grows into a new sporophyte.
Explanation:An example of an alternation of generations would be a diploid plant (sporophyte) that produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte). In this process, the plant alternates between two forms: a diploid form known as a sporophyte that produces haploid spores by meiosis, and a haploid form known as a gametophyte that produces gametes by mitosis. When these gametes fuse during fertilization, they form a diploid zygote that grows into a new sporophyte. This cycle of alternating generations is observed in all plants and some algae, representing a blend of the haploid-dominant and diploid-dominant extremes.
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What are three factors that affect the rate at which photosynthesis occurs
Answer: The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.
Explanation:
"The correct answer is that three factors that affect the rate at which photosynthesis occurs are light intensity, carbon dioxide concentration, and temperature.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose. This process is crucial for life on Earth as it provides the oxygen and organic molecules necessary for the survival of most organisms. The rate of photosynthesis can be influenced by several factors, among which the following three are key:
1. Light Intensity: Photosynthesis requires light to drive the reaction. At low light intensities, the rate of photosynthesis increases as the light intensity increases. However, once the light intensity reaches a certain threshold, the rate plateaus because other factors become limiting. This point is known as the light saturation point.
2. Carbon Dioxide Concentration: Carbon dioxide (CO2) is a substrate in the photosynthesis reaction. An increase in CO2 concentration typically leads to an increase in the rate of photosynthesis up to a certain point. Beyond this point, the enzyme responsible for fixing CO2 (RuBisCO) becomes saturated, and additional CO2 does not increase the rate of photosynthesis.
3. Temperature: Temperature affects the rate of photosynthesis by influencing the activity of enzymes involved in the process. As temperature increases, the rate of photosynthesis generally increases as well, up to a certain optimal temperature. Beyond this optimal temperature, enzymes may denature, and the rate of photosynthesis will decrease.
Other factors that can also affect the rate of photosynthesis include water availability, the presence of pollutants, and the health of the plant. However, light intensity, carbon dioxide concentration, and temperature are typically considered the primary factors that have the most significant impact on the rate of photosynthesis."
What happens when eggs get older during storage?
a.the color of egg yolk changes
b.the size of aircell increases
c.egg white becomes thinner
d.both b and c are correct?
It’s D: it becomes thinner and increases the size of aircells
The Empire State building in New York City is one of the most recognizable buildings in the world. Jim works at a structural engineering firm and needs to make a scale model of the Empire State building. He knows that the Empire State building is 443.2 m tall. His boss wants the scale to measure 1.00 cm= 2.50 m. What should be the height of the scaled Empire State building?
Jim's scale model of the Empire State building should be 177.28 centimeters tall according to the scale of 1.00 cm to 2.50 meters.
Jim needs to make a scale model of the Empire State building for his structural engineering firm. The real Empire State building is 443.2 meters tall and the desired scale is 1.00 cm to 2.50 meters. To find the height of the scaled model, we use the given scale to calculate:
Identify the scale factor: 1 cm : 2.50 m.Convert the real height (443.2 meters) into the same units used by the scale, usually the smaller one. In this case, we will convert to centimeters: 443.2 m × 100 cm/m = 44320 cm.Apply the scale factor: 44320 cm × (1 cm / 2.50 m) = 17728 cm.Convert the result back to the original unit for the model's height, which is in centimeters, therefore the final step is not necessary in this case. The scaled model should be 17728 cm high.In conclusion, the height of the scale model of the Empire State Building should be 177.28 centimeters.
baby sea turtles hatch underground automatically did upward towards the sky and skirts what is the waves this is an example of _______behavior
Answer:
maybe D
Explanation:
What is suggested by the similarity of early embryos of different species of vertebrates?
Answer:
It shows their evolutionary history and their possible common ancestor.
Explanation:
Similarity of early embryos of different species is a phenomenon observed by many scientist such as Karl von Baer, Charles Darwin and Ernst Haeckel.
Karl von Baer even formulated the law of embryonic development. He explained that there is a certain embryonic form, basic form, which is similar in different species. After this stage (basic form) each species develops independent-there is a branching pattern of further development.
So, according to von Baer development goes " from the most general forms the less general".
What are two main sources of genetic variation?
Answer:
Mutations and gene recombination
Explanation:
Mutations are changes in DNA sequence that can create genetic variation within the population and thus are the ultimate source of new alleles . Mutations are important for evolution because of their ability to form a new genetic variant (allele) that can be spread to the offspring. If a new variant of a trait formed by a mutation is advantageous and helps the organism to survive and reproduce, it is going to be favourable by natural selection. That variation will more likely be passed to the next generation and remain over time.
Genetic recombination is a process that occurs during meiosis between homologous chromosomes and it involves exchange of genetic material between them. As a result, offspring inherits reshuffled alleles different than their parents.
Another sources of genetic variation are random mating and random fertilization.
The main sources of genetic variation are mutations and sexual reproduction. Mutations are changes in DNA that can have various effects on an organism's phenotype and fitness. Sexual reproduction results in the creation of unique genotypes and phenotypes through the combination of alleles from two parents.
Explanation:Genetic diversity in a population comes from two main mechanisms: mutation and sexual reproduction. Mutation, a change in DNA, is the ultimate source of new alleles, or new genetic variation in any population. The genetic changes caused by mutation can have one of three outcomes on the phenotype. A mutation can affect the phenotype of the organism in a way that gives it reduced fitness—lower likelihood of survival or fewer offspring. Alternatively, a mutation may produce a phenotype with a beneficial effect on fitness. And, many mutations will also have no effect on the fitness of the phenotype; these are called neutral mutations. Mutations may also have a whole range of effect sizes on the fitness of the organism that expresses them in their phenotype, from a small effect to a great effect.
Sexual reproduction also leads to genetic diversity: when two parents reproduce, unique combinations of alleles assemble to produce the unique genotypes and thus phenotypes in each of the offspring.
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Which component of a Milankovitch cycle is related to periodic ice ages throughout Earth's history? A. Axial precession B. Apsidal precession C. Cloud cover feedback D. Precession of the ecliptic
The answer is c because the precession of the ecliptic was component of a milankovitch cycle and is related to periodic ice ages through out history
Axial precession is the component of a Milankovitch cycle which is related to the periodic ice ages throughout the Earth's history. Thus, the correct option is A.
What is the Milankovitch cycle?Milankovitch cycles is the term which describes the collective effects of changes in the Earth's movements on its climate over the range of thousands of years. The term Milankovitch cycle was coined and named after the Serbian geophysicist and astronomer Milutin Milanković.
The three main components of Milankovitch cycle are eccentricity, obliquity, and the precession. Eccentricity of the planet describes the degree of variation of the Earth's orbit around the Sun from the circular shape to more elliptical one.
Axial precession is the component of a Milankovitch cycle which is related to periodic ice ages throughout Earth's history.
Therefore, the correct option is A.
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Three chronic marijuana users—a "light" user, a "moderate" user, and a "heavy" user—stop using marijuana. before quitting, all three experienced abnormal blood flow in their brains. several weeks later, blood flow in their brains had most likely:
After stopping marijuana use, chronic users are likely to experience a normalization of brain blood flow over time, which could correspond to an improvement in cognitive functions. However, recovery may vary and research findings on the extent of the impact and reversal are not entirely conclusive.
Effects of Marijuana on Brain Function and Blood Flow
When considering the implications of chronic marijuana use on brain function, it's important to acknowledge the complexity and inconsistency existing within research findings. Chronic marijuana use has been associated with alterations in brain blood flow, but the direct connection to cognitive impairment remains unclear, partly due to potential confounding factors like other drug use or withdrawal symptoms. The difficulty in detecting the subtle effects that marijuana may have on the brain with current techniques complicates the establishment of a clear relationship between marijuana use and changes in blood flow and function.
However, once chronic users such as a "light", "moderate", or "heavy" user cease consumption, the brain begins to undergo changes. Studies indicate that the abnormalities in blood flow observed in chronic users are likely to improve over time after cessation, which could signify a partial or full reversal of any chronic marijuana-induced alterations. This improvement aligns with the understanding that marijuana is generally less harmful to health compared to substances like tobacco and alcohol. Nonetheless, the exact rate and extent of normalization in brain blood flow can vary based on the level of prior usage and individual differences in physiology.
Ultimately, while marijuana has been reported to be non-physiologically addictive and is considered benign compared to other substances, the effects on chronic users' brains post-cessation are expected to trend towards a normalization of blood flow and potentially an improvement in cognitive functions. However, these expectations must be viewed cautiously, given the complex nature of neuroimaging and its interpretation in the context of marijuana use.
Modifications of histone tails can:affect expression of some genes in response to the environment.affect chromatin structure.activate transcription of some genes.repress transcription of some genes.All of these choices are correct.
Answer:
All of these choices are correct.
Explanation:
Histone modification can be defined as a type of gene expression regulation. It refers to covalent post-translational modifications of histon tail proteins such as methylation, phosphorylation, acetylation, ubiquitylation, and sumoylation. As a consequence of modifications, chromatin structure might be changed, into active regions of euchromatin, (active transcription), or heterochromatin regions (inactive transcription).
Modification might be due to response to the environment, are heritable and are called epigenetic control.
What is the function of each lymph organ?
Answer:
The lymphatic system is a network of tissues and organs that help rid the body of toxins, waste and other unwanted materials. The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body.
Short Answer:
It helps get rid of toxic waste throughout the body in which can cause harm or damage organs.
Answer:
The primary function of lymph organs is transport of lymphatic fluid.
Explanation:
The lymphoid organs include the lymph nodes, spleen, bone marrow, lymph tissue, and thymus and form the lymphatic system.
Lymph nodes are bean-shaped small structures that produce and store cells that fight against infections, bone marrow produce T and B cells and some times it helps in the early maturation of these cells.
Thymus glands are the site of developing specialized cells called T-lymphocytes. From thymus gland, these cells transported through blood vessels to spleen and lymph node.
The primary function of lymphatic organs to transport and storage of lymphatic fluid to the different site of the body.
Thus, the primary function of lymph organs is transport of lymphatic fluid.
What is a B cell?
A.
A lymphocyte that makes antibodies
B.
A pathogen that makes antigens
C.
An antigen that makes antibodies
D.
A virus that makes bacteria
A lymphocyte that makes antibodies
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1. The ocean floor is far more even than the surface of the earth.
True or False.
2. The first echo sounder was used in a German submarine.
True or False.
3. Offshore drilling is the concern of
A.) Coastal regions
B.) freshwater lakes
C.) inland rivers and streams
D.) the deeper parts of the ocean
4. By definition, an inogranic element is.
A.) not alive
B.) microscopic
C.) in the ocean
D.) immune to change
5. Marine science is a specialty in many traditional careers, such as veternarian or lawyer.
True or False.
6. Supporting all stakeholders means that.
A.) any solution benefits all stakeholders equally
B.) the solution favors human needs over environmental
C.) one stakeholder is supported at the expense of the others.
D.) all needs are taken into account and solutions are designed to consider them all.
7. The ocean has been monitored by satellite since
A.) 1919
B.) 1957
C.) 1979
D.)1985
8.) Marine scientists can be found in all of the following fields EXCEPT.
A.) Museums
B.) Aquariums
C.) Agriculture
D.) Water treatment.
Answer:
1 False
2 True
3 A
4 B
5 True
6 C
7 B
8 B
Explanation:
This is what i think but people may have different answers
The correct answers for the following questions are:
1. The ocean floor is called the abyssal plain, which consists of deep trenches. The volcanic islands, seamounts, and ridges are present on the ocean floor, which makes it uneven.
The given statement is False.
2. Echo sounders are the devices used in ships and submarines to transmit the sound pulse into the water. The first echo sounder was used by a German submarine in the mid-1920s.
The given statement is True.
3. Offshore drilling is unacceptable and possess the most threat to the coastal regions. Oil spills and natural gas leasing is continuously occurring in the Gulf of Mexico.
The correct answer is Option A.
4. Inorganic elements are substances made up of different atoms and molecules, not comprising chains of hydrocarbons. The inorganic elements are microscopic.
The correct option is B.
5. Marine science specializes in many traditional careers like veterinarian or lawyer. It draws on the life and physical sciences, earth, and space sciences.
The given statement is True.
6. Stakeholders are the parties that have an interest in a company or business and can affect them. The stakeholders are supported by all needs are taken into account and solutions are designed to consider them all.
The correct option is D.
7. The space organizations have sent many satellites in space for monitoring space and earth activities. The satellites monitoring the ocean have been in space since 1978.
The correct option is C.
8. Marine scientists are those scientists, which work in the field of water and the activities associated with aquatic and marine life. Marine scientists are not found in museums.
The correct answer is Option A.
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0.75 km expressed in cm 7,500 cm 750 cm 75,000 cm 7.5 cm
Answer:
C) 75,000 cm
Explanation:
1 KM in CM is 100,000 CM. If you were do get 25% of the conversion (25,000) and subtract it from the unit rate above, then you will get 75% of 100,000 which is 75,000.
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Interruption of normal blood flow to part of the brain is known as __________. cerebrovascular disease hypertension atrial fibrillation arrhythmia
Does natural selection affect populations or individuals?
Answer:
Humans can't negatively impact ecosystems, because species will just evolve what they need to survive. Natural selection acts for the good of the species. ... Natural selection is about survival of the very fittest individuals in a population. Natural selection produces organisms perfectly suited to their environments.
Explanation:
Which of the following best compares the roles of the fallopian tubes and the uterus?
Eggs develop into embryos in the fallopian tubes and mature in the uterus.
Eggs are fertilized in the fallopian tubes and become implanted in the uterus.
Eggs become implanted in the fallopian tubes and travel through the uterus during birth.
Eggs are produced in the fallopian tubes and are fertilized in the uterus.
Answer:
Eggs are fertilised in the fallopian tubes and become implanted in the uterus.
Explanation:
The eggs are produced in the ovaries and from the ovaries, the eggs then travel down the tube-like structures known as fallopian tubes, that are connected to the uterus.
It is in these fallopian tubes where the sperms meet the eggs and fertilization occurs, the zygote thus formed then further travels down the fallopian tube and reaches the uterus where the implantation occurs.
Please see the attached image.
Answer:
Eggs are fertilised in the fallopian tubes and become implanted in the uterus.
Explanation:
Which tissue acts as a filter on the water absorbed by root hairs?
Answer:
endodermis
Endodermal cells filter solutes from water and allow them to pass through to the vascular tissue.
Explanation:
Most nutrient absorption happens in which structure within the digestive system? A. Duodenum B. Stomach C. Large intestine D. Chyme
Answer:
A. Duodenum
Explanation:
Duodenum is the first part of the small intestine which receives bile juice, pancreatic and intestinal digestive juices. The digestive enzymes present in these juices completes the process of digestion.
The lining of the duodenum has numerous finger-like projections called intestinal villi. The villi are specialized to absorb the digested food by providing increased surface area for the process of digestion. Hence, among the given options, the absorption of digested food occurs in duodenum.
Most nutrient absorption happens in A. Duodenum
Explanation:The duodenum is the primary site for nutrient absorption within the digestive system. It is the first part of the small intestine, located immediately after the stomach. The chyme, a mixture of partially digested food and gastric juices, enters the duodenum from the stomach.
Here, various digestive enzymes from the pancreas and bile from the liver are introduced to break down carbohydrates, proteins, and fats. These enzymes help in the absorption of nutrients, including glucose, amino acids, and fatty acids, into the bloodstream. While some nutrient absorption occurs in other parts of the small intestine, the duodenum plays a pivotal role in this process.
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Leia um parágrafo que aponta o agente causador da gripe e cita um exemplo de tr?s grandes pandemias dessa doença?
Answer:
Eu preciso saber o que a passagem diz para que eu possa Responda
Explanation:
How does the pineal gland regulate sleep?by regulating the thyroid gland by secreting melatonin by producing calcium by stimulating the pituitary gland?
Answer: Secreting Melatonin
Explanation:
Answer:
Secreting Melatonin
Explanation:
A group of students form a Healthy Earth club at their school. Their goal is to limit their school’s impact on human-led climate change. They brainstormed a list of actions they can take to meet this goal.
Answer:
Meet goals: Buy disposable plates, Recycle used paper, Post reminders to teachers, Encourage parents to walk, Start a compose bin
Doesn't meet goals: Propose that the school cuts down trees
This question is about a group of students forming a Healthy Earth club to limit their school's impact on climate change, and the actions they can take to meet this goal.
Explanation:This question is related to the subject of Science and is appropriate for Middle School students. The student is asking about a group of students who formed a Healthy Earth club at their school to limit their school's impact on human-led climate change. The students brainstormed a list of actions they can take to meet this goal. This topic relates to environmental science and the study of climate change and its effects on Earth.
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Global warming can be attributed to the increase in greenhouse gases. Which of the following is a major greenhouse that gas humans are releasing into the air at alarming rates?
Ozone
Oxygen
Glucose
Carbon Dioxide
Question 34 (2 points)
The greenhouse gas from the previous question can affect the oceans too when it dissolves into the water. Which of the following best describes this phenomena, what happens and how it harms ocean ecosystems?
Eutrophication will occur when the algae ingest the extra greenhouse gases. This then suffocates the rest of the animals.
Ocean acidification will occur causing the water to become polluted. The surrounding animal communities then ingest the water and get sick with domoic acid.
The carbon cycle will get disrupted and then the animals can’t maintain their symbiotic relationships as easily in this altered environment.
Ocean acidification will occur causing the water to become more acidic. This makes it difficult for the shellfish to build their calcium carbonate shells
Question 35 (2 points)
What happens to plastic waste – where does the majority of it end up?
Burned for energy
Landfills
There is no such thing as plastic waste – it is all recycled.
The ocean
Answer: its CO2 for the first one
Explanation:
Which of the following does not influence the time necessary for a nerve impulse to be transmitted?
a. length of the axon
b. presence or absence of a myelin sheath
c. diameter of the axon
d. presence or absence of nodes
e. whether or not the impulse begins in the CNS
Answer:
e. whether or not the impulse begins in the CNS
Explanation:
Nerve impulse is action potential movement through the axon. Nerve impulse propagation has its velocity (speed at which nerve impulse travels down the axon) which depends on many factors. For example, myelination increases the conduction velocity. Also, the larger the diameter of an axon, the higher the velocity is. Nodes of Ranvier present on the axons, and myelin sheath between the nodes act as a good electrical insulator which also increases the velocity.
Whether or not the im_pulse begins in the C_NS does not influence the time necessary for a nerve impulse to be transmitted.
What is the C_NS?The Central Nervous system (C_NS) refers to the organism system used by the body to receive and transmit signals from the environment.
The central nervous system is composed of cells called neurons, which contain prolongations called axons.During a nervous stimulus, the axons serve to communicate different nerve cells.In conclusion, whether or not the impulse begins in the C_NS does not influence the time necessary for a nerve impulse to be transmitted.
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Joe makes a daily protein shake and includes a raw egg in it for extra protein. he is at risk for which foodborne illness
Answer:
Salmonella
it is a germ inside an egg that makes you sick
An endospore may survive a drought because it is protected by a
a. hollow bridge.b. thick wall.c. plasma membrane.d. plasmid replication.
Answer:
b. thick wall.
Explanation:
Endospore is a structure formed by some bacteria, that help them survive unfavourable conditions (e.g. lack of nutrients). This survival strategy of some bacteria (usually Gram+ bacteria) help them stay dormant for a while, until stressful conditions stop. A thick wall composed of many layers (exosporium, spore coat, spore cortex, core wall) of the endospore is what provides resistance to different stressful chemical and physical factors such as UV radiation, temperature, chemical damage etc.
An endospore can survive a drought due to a thick protective wall it forms around itself. This protective layer helps it withstand extreme conditions such as dryness, heat, and cold.
Explanation:An endospore is a tough, dormant structure formed within certain bacteria that allows them to survive in harsh conditions such as a drought. The major contributing factor to this resilience is a thick wall that the endospore forms around itself. This provides resistance to extreme conditions including desiccation (extreme dryness), heat, cold, radiation, and certain disinfectants. Unlike a plasma membrane, hollow bridge, or plasmid replication, it's this thick shock-resistant layer which grants the endospore this durability. In essence, it is built to endure extremely adverse situations.
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Based on this information, which alternative energy source should the community consider investing in?
Answer:
Solar Energy
Apex
What does a pyramid of biomass represent?
A. Range of food webs found in one trophic level
B. Amount of living tissue within a trophic area
C. Percentage of energy that's passed through each trophic level
D. Number of total organisms within each trophic level
Answer:
B. Amount of living tissue within a trophic area
Explanation: I just took the test
Answer:
B
Explanation: