Answer:
A pathogen is an agent that causes disease, such as a virus, bacterium, protozoan, or parasite. A vector is an organism, often an arthropod, that carries a pathogen to its host. So, for example, for malaria the pathogen is a protozoan called Plasmodium, and the.
Explanation:
In a particular organism, scientists notice that cells are dying at a higher rate than normal. Upon further examination, they find that these cells die after they became filled with large lipids and protein of many different sizes. what do you predict is the reason for the cells death apex
Answer: lysosomes are malfunctioning so molecules targeted for destruction are not being removed.
What groups of organisms are most in danger of extinction?
A. Those with small population
B. Those that migrate or need special habitats
C. Those with large populations that breed quickly
D. Both a and b
Explanation:
D.Both a and B
As organisms with small population and those who migrate and need special habitat are most in danger of extinction.
The group of organisms that are in danger of extinction is those that have small populations and those that migrate or need special habits. So the correct option is D.
What is the extinction of species?
In biology, extinction refers to the extinction or death of a species. Extinction happens when a species' numbers are reduced due to evolutionary changes in its members, such as genetic inbreeding, poor reproduction, and population decline, or due to environmental factors like habitat fragmentation, climate change, natural disasters, and overexploitation of the species for human use.
The majority of species that have ever existed on Earth have gone extinct, but the fossil record indicates five very significant extinctions, known as mass extinction events, each of which resulted in the extinction of enormous numbers of species. The bulk of extinctions, which happen continuously and are described as background extinctions, are separated from these glaring decreases in the variety by the term "mass extinction."
Therefore, the correct option is D.
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A statement of fact meant to explain an action or set of actions about nature .
A. Laws
B. Hypothesis
Answer:
A. Laws
Explanation:
Answer:
Laws
Explanation:
A hypothesis is a guess based off of background knowledge while laws are strictly facts.
In this phase the chromosones begein to un coil and form chromatin?
a. Telophase
b. Metaphase
c. Prophase
d. Anaphase
Answer:telophase
Explanation:
Telopahse is the last phase of mitosis. The chromosomes uncoil then a membrane forms around them and the one cell splits into two cells.
5. What bone does not join with any other bone and is part of the axial skeleton?
Answer:
Hyoid bone
Explanation:
Although it is not found in the skull, the hyoid bone is considered a component of the axial skeleton. The hyoid bone lies below the mandible in the front of the neck.
Answer:
The hyoid Bone
Explanation:
Although it is not found in the skull, the hyoid bone is considered a component of the axial skeleton.
why is it important to understand the breakdown of water into its ions before learning about acidity
The chemical reaction equation of photosyntesis is shown here:
6CO2 + 6H2O → C6H12O6
What information is not given in this equation.
A)It does not show if the reaction is reversible or not reversible.
B)It does not show the reactants needed for the reaction.
C)It does not show that photosynthesis consists of many separate steps.
D)It does not show the number of molecules required to produce glucose.
Answer:
C
Explanation:
C appears to be the best answer but I think a better answer would be that it didn't include another product which is oxygen. So unless it is late and my brain is not function, I would say that should be the answer. But otherwise, since it is not there, C is the best one I think.
The chemical reaction equation of photosynthesis is shown here:
6CO2 + 6H2O → C6H12O6, C)It does not show that photosynthesis consists of many separate steps. Thus option "C" is correct.
What is photosynthesis?
The chemical reaction of photosynthesis is given as follows;
6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)
Therefore, six molecules of gaseous carbon dioxide (CO₂) combine with six molecules of liquid water (H₂O) in the presence of energy from Sunlight to produce one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)
The 6O₂ is the gaseous oxygen produced as a byproduct of photosynthesis
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The concentration of urea in g per 100 cm3 in part A is 0.03, and in part C is 2.00.
How many times more concentrated is the urea in part C compared with part A?
Which of the following best describes the relationship between the shape of enzymes and the reactions they catalyze? (5 points)
Group of answer choices
The shape of an enzyme depends on the reaction that it needs to catalyze.
Enzymes with more active sites can catalyze several reactions at once.
The shape of an enzyme determines which reaction it can catalyze.
Enzymes change shape after they catalyze a reaction and become waste products.
Answer:
The shape of an enzyme determines which reaction it can catalyze.
Explanation:
Enzymes are regenerated at the end of the reaction.
Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.
Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.
What is natural selection?Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.
The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.
Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.
Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.
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Which pair of properties apply to both mechanical and electromagnetic waves?
A.
Both waves carry energy and refract
B.
Both waves are longitudinal and refract
C.
Both waves are transverse and carry matter from one place to another
D.
Both waves carry energy and do not need a medium to travel through
Answer:
A. Both waves carry energy and refract
Explanation:
There are two major types of waves viz; mechanical waves and electromagnetic eaves. Mechanical waves such as sound waves are waves that require a medium or matter to pass/travel through while electromagnetic waves like light waves do not strictly require a medium to travel i.e through vacuum.
Electromagnetic waves are transverse waves i.e their particles move perpendicularly to the direction of the wave while mechanical waves can either be transverse or longitudinal. All waves carry energy from one medium to another and are capable of refraction i.e. change of direction.
Therefore, both mechanical and electromagnetic waves carry energy and refract.
true or false?
with explanation
Answer:
true
Explanation:
the body has the means of producing insulin but cannot due to either a hormonal imbalance or deficiency thus raising their levels
The movement of ocean currents around the globe? Check all that apply. Strong winds force warm water to sink to the ocean floor. The Coriolis effect causes warm and cold water to mix. Cool dense water sinks to the ocean floor. Warm water replaces cool surface water. Wind blowing parallel to the shore causes upwelling of cool water.
Answer:
Explanation:
3,4,5
Answer:
3,4 and five
Explanation:
What backs up a scientific law?
Answer:
Scientific laws are similar to mathematical postulates. They don't really need any complex external proofs; they are accepted at face value based upon the fact that they have always been observed to be true. Specifically, scientific laws must be simple, true, universal, and absolute.
Explanation:
What factors account for a location's whether?
please helpppppp meeee
Answer:
what happened my friend is everything fine well 1 + 1 equals 2 got it?
Large, circular lily pads are able to float on the water's surface.
Answer:
true
Explanation:
they're buoyancy
The property of water in "Large, circular lily pads are able to float on the water's surface" is cohesion.
What is cohesion?Cohesion refers to the attraction of one water to another. This force will cause the water in the lake to develop surface tension. The large and thin leaf of the water lily gives it a low force per area.
The leaf will float above the water if the force acting on the surface is not greater than surface tension. The ability of water spiders to walk on the surface tension of the water.
The leaves of lotus float on the water because the bottom of the leaves have edges and thick ribs that capture air between them, which helps them to float on the water.
Thus, the property of water that is shown in the given statement is cohesion.
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The question is incomplete. Your most probably complete question is given below:
Identify which property of water cohesion, adhesion, or heat capacity applies to each observation below.
1. Large, circular lily pads are able to float on the water's surface.
Most mammal cells divide at a rate of
Mammals have a slow rate of division that is between 12 and 24 hours. These cellular divisions are asynchronous. Zygotic transcription starts at the two-, four-, or eight-cell stage. Cleavage is holoblastic and rotational.
PLEASE HELP WILL MARK BRAIN
(ANSWER APPROPRIATELY)
Answer: If a land fertilizer were used on the algae it would severely damage the plant and suffocate it.
Explanation: Fertilizers are used by homeowners to maintain and improve landscape beauty and quality. In recent years, increased use of home lawn and garden fertilizers has caused concern about pollution of lakes and groundwater. Proper fertilizer application can enhance plant growth without polluting the environment. Yet, misuse of fertilizer may not only harm the environment—especially ground and surface water—but may in fact result in injury to landscape plants as well. The nutrient phosphorus harms clear, free water by creating algal blooms. This process, known as eutrophication, turns the water green, clouds the water, causes odor problems, and depletes the oxygen for fish and other species, effectively suffocating them.
Answer:
Well knowing that most fertilizers help algae grow, my prediction is that the algae expectantly grow at a high rate. The rain would also help the growth and might even get the algae in the water systems.
Explanation:
HELP ME PLS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Compare the data shown in the table. What reasonable conclusion can be made from the information given?
If an H is for tall trait which is dominant and h is the recessive trait for short,
which of the following crosses will result in 1:1 tall:short progeny (offspring).
A) HH Xhh
B) hh X hh
C) Hh X hh
D) Hh X Hh
Answer:
The cross that guarantees a height trait ratio in the offspring of 1 : 1 high/low is Hh X hh (option C).
Explanation:
For a characteristic such as size, where tall (H) is the dominant trait and short (h) is the recessive, the crossing of a tall heterozygous (Hh) individual with a short one will have a probability that half of the offspring will be tall and the other half short.
This can be demonstrated with a Punnett square:
Cross Hh X hh
Alleles H h
h Hh hh
h Hh hh
Based on this result, half of the offspring will be tall, with genotype Hh, and the other half short, with genotype hh, which corresponds to a tall : short ratio of 1 : 1.
In the other options is not possible to obtain this result:
A) HH Xhh = 100% Hh.
B) hh X hh = 100% hh.
D) Hh X Hh = 50% Hh, 25% HH and 25% hh.
What would happen if the mitochondria were missing from a cell?
Answer:
We'd be in big trouble...
Explanation:
The mitochondria is the powerhouse of the cell, without mitochondria (singular, mitochondrion), higher animals would likely not exist because their cells would only be able to obtain energy from anaerobic respiration (in the absence of oxygen), a process much less efficient than aerobic respiration.
The absence of mitochondria would have a profound effect on cellular function, including the cell's ability to produce energy, regulate ROS levels, and control important signaling and metabolic pathways. Such a cell would likely be unable to survive for very long.
What is the effect of mitochondrial removal?Without mitochondria, the cell would not be able to generate ATP through aerobic respiration, which takes place in the mitochondria. Instead, the cell would have to rely on other, less efficient metabolic pathways to produce energy. Mitochondria are also important for regulating the levels of reactive oxygen species (ROS) in the cell. Without mitochondria, the levels of ROS would likely increase, leading to oxidative damage to the cell's proteins, lipids, and DNA. Mitochondria play important roles in cell signaling pathways, including those involved in apoptosis (programmed cell death) and calcium signaling. Without mitochondria, these pathways would likely be altered, which could have profound effects on cellular function and survival.
Hence, such a cell would likely be unable to survive for very long.
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By which process does the blue ink spread through the jelly?
Answer:
Diffusion
Explanation:
Diffusion is the process through which the ink is dissolved into the water. It plays an important role in transferring of the solution from area of low concentration to the higher concentration.
The fish in the first bowl couldn't have baby after baby after baby forever. The bowl filled up with fish and many fish died. A bowl this size can only keep three fish alive. What is it called when an area/home/ecosystem has a limit to the number of living things that can live there?
Answer: Carrying capacity
Explanation:
The carrying capacity can be defined as the ability of an ecosystem to sustain a particular number of members of the population of species in terms of availing resources for survival.
According to the given situation, the fish bowl is an ecosystem which can only sustain a particular number of fishes. Thus, the increase in the population of baby fishes was not supported by the fish bowl.
Please help(due today)
Answer:
I would say A
Explanation:
it makes the most sense to me sorry if im wrong.
Why are there fewer tuskless elephants born after the war (ages 10-20 years old)?
Elephant tusks are either present or absent due to genetics, specifically the existence of key genes that regulate tusk growth. Environmental elements, however, can also affect the proportion of tuskless elephants in a population.
Elephants are frequently hunted down during conflicts or wars for their ivory tusks, which are highly sought-after on the illicit market. Over time, the population of elephants with tusks may decline as a result of this selective hunting of those with them.
The age range of 10 to 20 years old is essential because it coincides with the period of time when elephants usually begin to grow their tusks. Around the age of 6 to 8 years, young elephants may start developing their tusks, and by the time they are 10 to 20 years old, their tusks should typically be more noticeable and developed.
It is possible that many young elephants with developing tusks will be killed if a conflict or a period of rampant poaching takes place during this crucial time, which will reduce the number of tusked elephants in the population. After such a conflict or a period of heavy poaching, there can be a larger percentage of tuskless elephants between the ages of 10 and 20.
This theory makes the assumption that there was greater poaching or selective hunting occurring during the conflict, which would have a disproportionately negative effect on elephants with tusks. In order to provide a more comprehensive knowledge of the issue, additional examination of local conditions and data would be required. The individual situations and variables affecting elephant populations can differ.
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Viruses cause disease by destroying cells and by disrupting the body's normal homeostasis. A virus can be fast-acting, such as the virus that causes the , or may belong to the group of viruses called retroviruses , which includes the virus that causes .
Answer:
The correct answer is -
The fast-acting virus causes: Meningitis
The slow-acting virus causes: AIDS (HIV)
Explanation:
A microorganism that can replicate inside a host cell and able to disrupt the homeostasis and leads to the killing or death of the cell. A virus can be either a fast-acting or slow-acting virus.
Meningitis is one of the fast-acting virus so fast that can result in the death of the person within 24 hours if not get proper medical assistance. Whereas retroviruses, a group of viruses that is slow-acting and grouped on the basis of their structure and replication method, the major disease that is caused by these viruses is AIDS by a retrovirus called HIV.
Answer:
Viruses cause disease by destroying (cells) and by disrupting the body's normal homeostasis. A virus can be fast-acting, such as the virus that causes the (common cold), or may belong to the group of viruses called (retroviruses) , which includes the virus that causes (influenza).
Animals and plants that are unable to adapt to their environment will become
A- Prey
B- A new species
C- Extinct
D- Hungry
I think A or C
Explanation:
It really depends on how the question is phrased. Animals and plants that are unable to adapt to their enviroment will become- Hold it right there. How long will they be unadaptable? Is this forever? If so then yes, they will definately become extinct. If this is for a short amount of time then no, they will become prey, but there is also the fact that yes, they will become hungry. Because if they are not adapted then how are they gonna know the best sports for grub? Same thing for plants, if they can't adapt to the climate, they cannot produce food for themselves. Basically, if its a simple question then forget about everything else. It's Prey, because animals that can't adapt to their enviroment are immedietly in danger. Now if this question has more to it then I would go for C. But overall Just go with prey for now.
Plants like the stinging nettle seen here have sharp, needle-like hairs that inject a burning chemical into animals that touch the stems or leaves. These hairs are used for A) protection. B) reproduction. C) photosynthesis. D) attracting insects.
Answer:
A. Protection
Explanation:
These plants have this external protection system to protect them against being eaten by these animals.
In cases where these plants are approached to be eaten by these animals, these systems which in this case are these hairs tend to make an effort by discomforting the approaching animals.
The animals upon sensing this discomfort retreat from feasting on these plants which thus prolongs their lives and prevent them from being eaten by these animals
What would happen if the enzyme used for cellular respiration or photosynthesis to break after a few cycle? Why?
Answer:
Please mark as brainliest!!!
Explanation:
Cells face a related problem when they break down fuels, such as glucose, to produce ATP. If the cell’s supply of ATP is low, it would do well to break down glucose as quickly as possible, replenishing the ATP it needs to “keep the lights on.” If the supply of ATP is high, on the other hand, it might not be such a good idea to oxidize glucose at top speed. ATP is an unstable molecule, and if it sits around in the cell too long, it’s likely to spontaneously hydrolyze back to ADP. This is like the case of the melted ice cream sandwich: the cell has spent glucose to make ATP, and that ATP ends up going to waste.
It’s important for a cell to carefully match the activity of its fuel breakdown (pathways to its energy needs at a given moment. Here, we'll see how cells turn cellular respiration pathways “up” or “down” in response to ATP levels and other metabolic signals.