Answer:
a and i already answer this
Explanation:
Consider two solutions of different sodium concentrations separated by a selectively permeable membrane. The net movement of water across the membrane will be from the area of ______ sodium concentration to the area of ______ sodium concentration.
Answer:
Consider two solutions of different sodium concentrations separated by a selectively permeable membrane. The net movement of water across the membrane will be from the area of high sodium concentration to the area of low sodium concentration
Explanation:
In this process, only water molecules can pass through the selectively permeable membrane. As the solution has different concentrations of solute, the water molecules will move from the more concentrated solution to the less concentrated solution. The process is called osmosis and is completed when both solutions have the same concentration.
case study: Explain the relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.
Answer:
Because malfunctioning mitochondria disrupts the body's equilibrium, there is a strong link between homeostasis,
defective mitochondria, and the symptoms induced by
LHON.
The condition of homeostasis in the body was also
affected by symptoms caused by Leber's hereditary optic
neuropathy (LHON).
hope it helps
Explanation:
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A seed, known as "pinhão", is the great evolutionary novelty that is present in Gymnosperms plants. Choose the correct affirmative sentence related to seeds.
Hi. Unfortunately, you didn't show the answer options, which makes it impossible for me to answer your question. However, I'm going to give you some general information about seeds that can help you find the right answer. Hope this helps you.
Seeds are structures responsible for plant proliferation. They exist only in gymnosperms and angiosperms and are absent in bryophytes and pteridophytes. All seeds are formed in the ovary of flowers as a result of the plant fertilization process.
All seeds are formed by three structures known as integument, nutrient and embryo. The embryo is what gives rise to another plant, which will grow after the seed is planted and germinates. Nutrients will be responsible for meeting the needs of the new plant during the beginning of its development. The integument, in turn, has the function of protecting the embryo.
What is the greatest threat humans pose to biodiversity?
Answer:
habitat loss, over-harvesting, and introduction of exotic species
Explanation:
The way that people have altered natural environments to create room for farms or to collect natural resources has posed the greatest harm to biodiversity yet, but as climate change intensifies, it will have a rising influence on ecosystems.
What is biodiversity loss?The term "biodiversity loss" describes the decline in biodiversity brought on by the extinction or relocating of species. Some people might not consider the extinction of a certain species to be significant, especially if it is not a charismatic species such as the Bengal tiger or the humpback dolphin.
However, according to estimates from scientists, the present pace of species extinctions is several times higher than the background, or average, rate seen throughout Earth's history. Within our lifetimes, this amounts to the extinction of tens of thousands of species.
The breakdown of ecosystems is anticipated to have drastic repercussions on human welfare. Because of the intricate relationships between species, a loss of biodiversity may have a ripple effect on ecosystems.
One species' extinction, for instance, may result in the extermination of another. Scientists evaluate which species are in danger of extinction as well as the state of the ecosystems to gauge the loss of biodiversity.
Therefore, the way that people have altered natural environments to create room for farms or to collect natural resources has posed the greatest harm to biodiversity yet, but as climate change intensifies, it will have a rising influence on ecosystems.
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Following glycolysis and the citric acid cycle, but before the electron transport chain and oxidative phosphorylation, the carbon skeleton of glucose has been broken down to CO2 with some net gain of ATP. Most of the energy from the original glucose molecule at that point in the process, however, is in the form of ____
Answer:
The correct answer is - NADH.
Explanation:
Glycolysis is a multistep part of cellular respiration in which food is broken down to give off energy in a form of ATP. In glycolysis, the end product is converted to Acetyl-CoA using the pyruvate dehydrogenase enzyme.
During the citric acid cycle and oxidative phosphorylation, there is NAD reduces and turns to NADH that moves to the mitochondria. It is converted to energy using redox reactions. Most of the energy from original glucose molecules are transported and exists in the forms of NAD to NADH.
where is the oesophagus locate
here's your answer..
Answer:
The esophagus runs behind the windpipe (trachea) and heart, and in front of the spine. Just before entering the stomach, the esophagus passes through the diaphragm. The upper esophageal sphincter (UES) is a bundle of muscles at the top of the esophagus.1
Explanation:
i am sure it will help you
URGENT PLEASE HELP
Rashid is conducting a seminar on the importance of coral reefs. Which point should he include?
A. that corals can be picked from the sea and sold
B. that corals are poisonous and can be used for pest control
C. that corals have a hard exoskeleton that can be used for construction of buildings
D. that corals are impervious to damage
E. that corals provide economic assistance to coastal populations through fisheries
Answer:
lo
Explanation:
How do you think the autonomic nervous system works with other body systems?
Explanation:
The autonomic nervous system regulates certain body processes, such as blood pressure and the rate of breathing. This system works automatically (autonomously), without a person's conscious effort. Disorders of the autonomic nervous system can affect any body part or process.
Which type of energy do the compounds in the food we eat contain?
chemical energy
electromagnetic energy
kinetic energy
thermal energy
Answer:
Chemical Energy
Explanation:
Chemical energy is simply energy that is stored in compounds or elements, specifically in the atomic bonds that connect atoms and molecules. In food, it's a form of potential energy because it's stored away.
need help with this please
Answer:
Nucleic Acid
Explanation:
Have a good day :)
Why are coral reefs important?
A: Coral reefs house over 25% of marine species.
B: Coral reefs provide an important habitat for many ocean creatures.
C: Coral reefs create important food webs.
D: All of the above
Innate immunity ________. is found only in vertebrates is the first, and most general, mechanism of protection against pathogens depends on an infected animal's previous exposure to a pathogen is based on recognition of antigens that are specific to a pathogen
Answer:
is the first, and most general, mechanism of protection against pathogens
Explanation:
Innate or natural immunity is one of the two types of immunity an organism can possess (the other being; acquired immunity). Innate immunity is the FIRST defensive response of an organism against pathogenic attacks. The acquired immune system is only activated when the innate immune system has been penetrated or surmounted.
For example, the skin, mucus secretion, inflammation etc. are all natural or innate defenses against foreign invaders. Therefore, according to this question, innate immunity the first, and most general i.e. commonly used, mechanism of protection against pathogens.
Cells with a full set of chromosomes are referred to as diploid or 2n, whereas cells with half the chromosomes are haploid or n. At which stage(s) of meiosis I are the cells diploid and at which stage(s) are they haploid
Answer:
Diploid → Prophase, metaphase, and anaphaseHaploid → TelophaseExplanation:
During prophase I, chromosomes get condensed. Each of the chromosomes gets in pair with its homologous one. They do so to make the crossing-over possible, a stage where they interchange their parts → 2n
During metaphase I, each of the homologous pairs is driven to the equatorial plane, where they randomly line up → 2n
During anaphase I, occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair → 2n
In telophase I, half of the chromosomes are already in one of the poles, while the other half is on the other pole. Each group of chromosomes has now half the number of the original cell. The nuclear membrane forms again in each pole → n
Finally, occurs cytokinesis, which involves the invagination of the cell membrane and cytoplasmic division.
The two new cells are ready for meiosis II.
Mitosis and Meiosis are the two types of cell division, in which the genetic material is replicated and transferred to the daughter cells.
The stages of meiosis in which chromosomes are diploid are prophase, metaphase, and anaphase. The haploid chromosomes are observed in telophase.
Meiosis is a reduction division in which genetic material is halved, such that a reduction in which diploid parent cells give rise to haploid daughter cells.
The stages of meiosis at which chromosomes are diploid and haploid are:
1. Prophase I is the first phase of meiosis I. The chromosomes are condensed and pair with the homologous chromosomes.
2. Metaphase I is characterized by the homologous pairs aligning at the equatorial plane.
3. Anaphase I is the independent separation of chromosomes, which migrate to opposite poles.
4. Telophase I is represented by the separation of chromosomes having a haploid number of chromosomes, which are now segregated into daughter cells.
Therefore, telophase I am the phase in which chromosomes are present in haploid numbers.
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Lab: Natural Selection
Assignment: Lab Conclusion Active
Prompt
Address the following points in paragraph form to write your conclusion.
1. Restate the overall purpose of the experiment. (Why did you do this experiment? What did it teach you?)
2. What were the major findings? (summarize the data you collected)
3. Was the hyposthesis supported by the data? (state your hypothesis and explain how your data relates to your hypothesis)
4. How could this experiment be improved? (If you did this again what could you do differently?)
5. What could be studied next after this experiment? (What else could you test to help you better understand this topic?)
DA
Answer:
sorry if i did not get it right : B
Explanation:
What is true about Anemia? *
1. Disorder of platelets
2. uncontrolled production of WBCs
3. Increase in number of RBCs
4. Abnormal production of chain of Hemoglobin
Answer: 4. Abnormal production of chain of Hemoglobin
Explanation:
Anemia is a condition where the cells in the body do not get enough oxygen because the red blood cells needed to transport them are either too little or are dysfunctional.
One way the red blood cells can be dysfunctional is when they have an abnormal type of hemoglobin. Hemoglobin is necessary in red blood cells to enable to transportation of oxygen and if it is dysfunctional, oxygen will have problems being transported which would lead to anemia.
Which of the following is the best resource to help you learn about the appearance, habitats, and behaviors of birds in your area?
Photography books
Field guides
Microbiology textbook
TV shows
Answer:
Field guides
Explanation:
Various species of plants and nimals exists some of which bears very similar resemblance but for some key differences which may be unknown to learners or observers. A field guide gives a description of plants and animals, stating key physical differences between similar plants and animals. This helps learners distinguish between the related organisms. Field guides are most useful when applied to habitats where a range of similar organisms have been spotted and the field guide is then taken to such habitat to physically identify each different plant or animal.
Answer:
Field Guides
Explanation:
what is your favourite movie and have 100 pojnts
Answer:
my favourite movies are
happy new year
captain
rustom
son of satyamurty 2
harry potter
love unexpected
Answer:
My favorite movie is elf
Explanation:
Woolly mammoths became extinct thousands of years ago, while other species of mammals that existed at that time still exist today. The woolly mammoths became extinct, unlike the other species, because the woolly mammoths *
1 point
produced offspring that all had identical inheritable characteristics
faced a struggle for survival
learned to migrate to new environments
had certain inheritable traits that enabled them to survive
Answer:
faced a struggle for survival
Explanation:
The woolly mammoths became extinct, unlike the other species, because the woolly mammoths faced a struggle for survival due to changing of environmental conditions. Global warming is the main cause of extinction of woolly mammoth which destroy their habitats about 10,500 years ago. The environmental conditions are not favourable for them so they faced struggle for survival which causes extinction of woolly mammoth.
why might scientists be wary of the results of a single experiment testing a particular treatment, even when the results are peer reviewed and statistically significant
Answer:
The results may not be true for humans if the experiment used a model organism.
Explanation:
An animal model is an animal species used in research that mimics diverse human traits/features such as, for example, human response to certain diseases. Thus, animal models may provide useful information related to human developmental biology and human diseases (i.e., prevention, diagnosis, treatment, etc). However, in general, experiments involving animal models cannot be used to predict human outcomes. For example, in genetics, animal models exhibit different features to humans, including but not limited to genomes (i.e., different number and structure of chromosomes), genes, gene regulatory pathways, epigenetics gene regulatory mechanisms, etc. In consequence, animal tests may be unreliable and therefore their results cannot be directly extrapolated to human subjects.
long necked giraffes are dominant to short necks , the giraffe is heterozygous
what is his genotype?
what is his phenotype?
let's say were representing neck length with L,
the genotype of a heterozygous giraffe would be Ll
the phenotype, or physical appearance would be long neck
Why does the skeleton stop growing in length?
a
Because the cartilage in the growth plate has been
replaced by bone.
b
Because there is not enough calcium and other
nutrients in the body.
Because the growth plates stop working
d Because the bones reach their maximum length
Answer:
Bones increase in length because of growth plates in the bones called epiphyses. As puberty progresses, the growth plates mature, and at the end of puberty they fuse and stop growing. ... After the growth plates fuse, there is no more increase in height, and we all then shrink gradually as we get older.
Which of these is the energy-carrying particle that
enables muscle contraction?
ОАТР
O water
O oxygen
O sarcolemma
When we breathe in and out normally during rest, this is called “quiet” inspiration (and expiration). It is also called tidal volume, as it refers to the “tides”. How much air (the volume) do we typically breathe in or out during quiet breathing (in ml...you will have to convert from Liters to Milliliters)?
Answer: the amount of air that normally enters the lungs during quiet breathing, which is about 500 milliliters.
Explanation:
HLPE ME FAST PLSSSSS NEED HELP PROBS WILL GIVE BRAINLY
Answer:
28. Transverse (all electromagnetic waves are transverse)
29. White light.
A light wave is a transverse wave.
If we mix red, blue, and green lights we would make white light.
Hope this helps! :D
I need help with this gizmo
A possible hypothesis for this situation is that tank 1 contains denitrifying bacteria, tank 2 contains nitrite nitrifying bacteria, and tank 3 contains ammonia nitrifying bacteria.
What is a hypothesis?A hypothesis, which is a common term used in experiments refers to a possible explanation for the results or phenomenon observed. In this case, a hypothesis needs to focus on the type of bacteria that are present in each of the tanks.
This means that to write a hypothesis we need to relate the type of bacteria to each of the tanks.
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Could a person with O+ blood have a daughter with AB+ blood? Explain.
Answer: yes
Explanation: search it up
4. Eukaryotic DNA is shaped like a
a. nucleotide.
b. X in a circle.
c. double helix.
d. covalent bond.
Answer:
The answer is a double helix
A frog has more offspring than can survive on available resources.
Which is this an example?
structural adaptation
overpopulation
variation in a population
artificial selection
A frog that has more offspring than can survive on available resources is an example of overpopulation.
WHAT IS OVERPOPULATION?Overpopulation is a process whereby there are more individuals of a population than the available resources.
According to this question, a frog has more offsprings than can survive on available resources. This means that there are more frogs than resources.
Therefore, frog that has more offspring than can survive on available resources is an example of overpopulation.
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If a mineral has a mass of 20 and a volume of 4, What is its density?
Answer:
5 g/cm²
Explanation:
Density = Mass/Volume = 20/4 = 5
Therefore, the density of the mineral is 5 g/cm². (Assuming those are the proper units).
Explanation:
d =mass/volume
d=20/4 =5
A cat with LONG HAIR (heterozygous) is a carrier of the short hair allele. Its mate has SHORT HAIR. Use a Punnett Square to determine the probability of their offspring having LONG HAIR.
Group of answer choices
25%
100%
0%
50%
75%
Answer:
50%
Explanation:
Hi there!
We are given the hair types of two cats
The first one has long hair, and it's heterozygous, meaning it has one dominant, and one recessive allele. We are given that it is a carrier of the short hair allele, meaning in its genotype, it has the short hair gene (that doesn't necessarily mean it's there in its phenotype). However, since it has long hair (genotype), that means that the long hair allele is dominant (the gene that will always show), and the short haired one is recessive (the gene that gets "covered up" by the dominant allele). Let's say the genotype of the long haired cat is Tt, where T is the long hair, and t is the short hair
The second cat has short hair, and as we have mentioned above, the allele for short hair is recessive, so the short haired cat has 2 copies of the short hair allele. Its genotype is tt
Please see below for the Punnett Square
Hope this helps! :)