Answer:
one half or one fourth or three fourths
Explanation:
just depends
Answer:
It's A or you can say 0
Explanation:
Taking this test now
Nerve cells that direct muscles and glands are known as ____________________ neurons. Nerve cells that carry information (pain, temperature, etc) from the body to the brain are called ____________________ neurons.
Answer:
1.Effectors/motor neurons
2. sensory
Nerve cells that direct muscles and glands are known as motor neurons, nerve cells that carry information (pain, temperature, etc.) from the body to the brain are called sensory neurons. Sensory neurons sense the stimulus that our body gets from the external environment.
What are the different types of neurons?Neurons make up the nervous system that conducts the impulse from the original site to the brain and spinal cord, and the neuron can either be a sensory or motor neuron. The nerve cell in a sensory neuron is stimulated by pain or temperature and converts it into an impulse that travels from the site of the organ to the spinal cord and brain, and after receive it, the action is sent to the effector organs. These muscles and glands respond to stimuli by producing actions.
Hence, Nerve cells that direct muscles and glands are known as motor neurons, nerve cells that carry information (pain, temperature, etc.) from the body to the brain are called sensory neurons.
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What is the difference between a pathogen and an antigen
Answer:
Antigen is a molecule capable of causing the immune system to produce antibodies against it. Pathogen is an infectious agent that may cause a disease.
Explanation:
Asexually reproducing animal populations are rare, but they typically consist of females who produce female offspring, so all offspring can produce more offspring. By contrast, half of the offspring of the sexual reproducers are male and cannot produce offspring. Thus, a clonal population of females can expand much more quickly than a population of sexual reproducers.
Potamopyrgus antipodarum is a species of freshwater snail that has spread far beyond its native New Zealand. Some populations of these tiny snails reproduce sexually, and other populations reproduce asexually. Huge asexual populations are now disrupting ecosystems all over the world, particularly where the water is contaminated with phosphorus. Fertilizers and detergents contain phosphorus, so agricultural runoff and other forms of water pollution are common in these regions. Like most animals that cannot reproduce sexually, the asexual snails have at least three sets of chromosomes; like most sexual organisms, the sexual snails have two. Explain why sexually reproducing snail populations predominate in regions where the water is unpolluted.
Answer:
Because of the fact that Snails cannot survive in nasty water.
Explanation:
How are increasing temperatures likely to effect agricultural
Answer:Climate change can disrupt food availability, reduce access to food, and affect food quality. For example, projected increases in temperatures, changes in precipitation patterns, changes in extreme weather events, and reductions in water availability may all result in reduced agricultural productivity.
Explanation:
Choose the answer that is not a fossil.
a petrified T-Rex is found in Montana
a 400-million-year-old fish preserved in rock
a cow skeleton in the desert
dinosaur footprints preserved in mud turned to rock
Answer:
The last one: dinosaur footprints preserved in mud turned to rock
Fossils have to be physical remains of an animal.
Hope this helps!
Answer:
(D) a cow skeleton in the desert
Explanation:
Because a petrified T-Rex is considered a fossil, a 400-million-year-old fish preserved in rock is also a fossil and a preserved footprint from a dinosaur is a fossil, the cow is the only one that is not a fossil because it does not remain or an impression of a prehistorical, organism because cows still exist today
Definition of a fossil: the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
PLEASE HURRY : The tissue that lines the intestine helps release ___ absorb / break down
nutrients by increasing the intestinal surface area. The long extensions of nervous tissue ___
connect/ingest / destroy the cells in the brain and other parts of the body.
The muscle cells are organized into flexible fibers because muscle tissue elongates and ____
absorbs / protects / contracts
. What are some consequences of using fossil fuels?
Answer:
Air Pollution
Explanation:
Burning fossil fuels emits a number of air pollutants that are harmful to both the environment and public health.
In addition to hot surface temperatures, which characteristic makes Mercury different from Earth?
Mercury has rings.
Mercury has no moon.
Mercury has slow revolutions.
Mercury has an atmosphere of carbon dioxide.
Answer:
Mercury has no moon
Explanation:
If you are on Edge then this is your answer enjoy.
The characteristic that makes Mercury different from Earth is that Mercury has no moon,
What are Mercury and Earth?Mercury can be regarded as the smallest planet in solar system, however is bigger that Earth's Moon.
Earth serves as the third planet and fifth largest planet in the solar system.
However, the difference between them is that Mercury has hot surface temperatures and there is no moon
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In pea plants, plant height is controlled by a single autosomal dominant gene. Tall plants (H) are dominant to short plants (h). A tall plant with the genotype capital H lowercase h crossed to a tall plant with the genotype capital H lowercase h. In a cross of two tall heterozygous plants, which phenotype ratio is expected from the resulting offspring?
Answer:
3:1 (Tall=75%)(Short=25%)
The law of superposition states that rocks or fossils form in layers . The contents of each layer are from which choice ?
(Don’t use for points)
Answer:
A. different time periods
Explanation:
The contents of the layers are from different time periods based on the law of superposition of strata.
This law states that "in an undisturbed sequence of strata, the oldest layer can be found at the bottom and the youngest on top".
The rock layers and their contents are usually from different time periods. Most times biostratigraphic study of the strata would reveal the ages of the beds.
Josie is making a chart to know to show some of the ways electromagnetic waves can be used. Which of the following should she NOT include in her chart.
A. A radar is used by a satellite to map the ocean floor
B. A telescope uses gammas rays to detect distant galaxies
C. A battery is used to store electricity from a wind generator
D. A navigation system uses radio waves to determine position
Answer: B. A telescope uses gamma rays to detect distant galaxies.
Explanation: A telescope does NOT use gamma rays. (also it was right)
1
2
3
4
Acid rain
A. results in a decrease in air quality
B. damages the surfaces of buildings, statues, rocks, and leaves
C. increases the rate at which the atmosphere absorbs heat
D. causes plants to absorb water more easily
Please select the best answer from the choices provided
ОА
OB
O c
OD
Answer:b
Explanation:
I live in Boston and statues are ripped from it
Please help!
Possible answers are :
Condition 1
Condition 2
Condition 3
Condition 4
Answer:
condition 3
Explanation:
Water moves from a high concentration to a low concentration across a permeable membrane by osmosis.
For a net loss of water to occur in the cell, water has to move outside the cell.
Therefore, the concentration of water inside the cell has to be higher than the concentration outside the cell.
This is true for condition 3, where the concentration inside is 95% and inside is 90%
The phospholipid bilayer is composed of lipids which are _________ and do not dissolve well in water but do dissolve in oils. The phosphate head does dissolve in water because it is _________ just like water
Explanation:
which are hydrophobic
it is hydrophilic like water
2. Which blood type would you have if antibodies A and B were made during your first year of life?
Answer: the possible possibilities are 3 if u have an A and B type of antibodies.
Explanation:
it can be -- AO or AB or BO
plus factor will depend upon enzyme presence.
If a person is having both anti-A and anti-B antibodies in blood then the possible blood group of that individual can be O. However, Rh factor cannot be determined by this information.
What is Blood Group?Blood grouping is the system of classification of blood on the basis of antibodies and antigens in blood which are inherited substances present on the surface of the red blood cells.
Blood groups are classified into four types. These are A, B, AB and O. Blood group A has antigens A on the RBCs with anti-B antibodies present in the plasma. Blood group B has B antigens on RBCs with anti-A antibodies in the plasma. Blood group O has no antigens on the membrane of RBCs and antibodies of both types anti-A and anti-B antibodies in the plasma. Blood group AB has both A and B antigens, but no antibodies in the plasma.
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In contrast to the red giant stage, the white dwarf stage will cause
A. the habitable zone to move outward past our solar system's borders.
B. The habitable zone to move back towards Saturn and its moons.
C. the habitable zone to rebound and return to Earth again.
D. The entire solar system to implode, destroying all planets.
(this question is like a mix of science and language arts because I'm on reading plus)
answer: b) The habitable zone to move back towards Saturn and its moons.
explanation: i just did the reading plus and that was the answer
Which statement is correct regarding the semiconservative nature of DNA? Best answer will be marked brainliest
A. Nitrogenous bases in each “parent” strand serve as a template for the new strand to be made
B. The semiconservative nature of DNA allows DNA to stay the same during gamete (egg and sperm) production
C. RNA operates as a template to allow DNA to replicate itself using ribosomes
D. The structure of the sugars on the DNA molecule direct the correct nucleotides into place during replication
The semiconservative nature of DNA means that Nitrogenous bases in each
“parent” strand serve as a template for the new strand to be made
The semiconservative nature of DNA means that the DNA has two helices
which are created from one strand of the helix. The other DNA acts as a
template in which the new DNA is copied from.
A new DNA double helix consists of a hybrid of one strand of old DNA which
are bound to one strand of newly synthesized DNA to ensure the daughter
cells have unique features.
This feature makes DNA profiling important in identification as individuals
have a unique DNA.
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The red squirrel is a species of tree squirrel that can be found in parts of Europe and Asia. In an experiment, a researcher introduced small populations of red squirrels to two different ecosystems at the same time. One of the ecosystems was a large nature reserve. The other was a city park that was about one-fourth the size of the nature reserve. The graph below shows the red squirrel population in both ecosystems over three years.
red squirrel population graph
The graph shows that while the red squirrel population was higher in the nature reserve than the city park, the city park still had a carrying capacity significantly more than one-fourth that of the nature reserve. Which statement could explain why the carrying capacity of the city park was higher than expected?
A.
The nature reserve is much larger than the city park, so its carrying capacity is greater.
B.
The city park contains fewer natural predators of the red squirrel than the nature reserve.
C.
The red squirrels in the city park face intense competition for a limited number of resources.
D.
The red squirrels in the nature reserve are better adapted to live in their environment.
Answer:
B. The city park contains fewer natural predators of the red squirrel than the nature reserve.
Explanation:
When compared to a nature reserve a city park really doesn't have any predators apart from some cats or birds. There really isn't much that can challenge the squirrel in order for their numbers to go down. There is no threat from food shortages and no threat from being eaten by larger animals that could live there.
Answer:
the number of trees in the city park may be limited by humans
the nature reserve may be much larger in area than the city park.
increasing human activity in the city park may disrupt mating opportunities.
Explanation:
The carrying capacity of an ecosystem is usually determined by a combination of factors. Examples of such factors include the boundaries of the ecosystem, the climate, the type and amount of resources available, competition for those resources, and predation.
The researcher's experiment showed that, with respect to the red squirrel, the carrying capacity of the city park is much lower than that of the nature reserve. The possible explanations for this difference are numerous but might include statements like
the nature reserve may be much larger in area than the city park,
the number of trees in the city park may be limited by humans, or
increased human activity in the city park may disrupt mating opportunities.
Any or all of these factors may be responsible for the different carrying capacities of the two ecosystems.
Which type of sensory receptors monitor position and movement of the body?
A. Photoreceptors
B. Chemoreceptors
C. Proprioceptors
D. Exteroceptors
The answer is Proprioceptors.
C is the correct answer my guy
which of the colors absorbed by chlorophyll is least visible?
Answer: Blue!!
Hope this helps!!! :D
Answer:
Blue
Explanation:
If this question is based off of the graph, then the answer would be blue because it shows that chlorophyll absorbs blue light the most, which makes it less visible.
If a woman is heterozygous for widow's peak
(widow's peak is dominant over a smooth hairline) has children with a man with a smooth hairline, what
are the possible phenotypes of their children?
It is impossible to determine the possible phenotypes.
O All of their children will have a widow's peak.
O None of their children will have a widow's peak.
It is possible for their children to either have widow's peak or a smooth hairline.
Answer:
It is possible for their children to either have widow's peak or a smooth hairline.
Explanation:
Let's say that the widow's peak allele is W (dominant) and the smooth hairline is w (recessive).
A woman heterozygous for widow's peak is Ww. A man with a smooth hairline must have two copies of the smooth allele since it is a recessive trait, so he must be ww.
The cross is Ww x ww
W w
w Ww ww
w Ww ww
There is a 50% chance that the children will have the genotype Ww, and therefore have a widow's peak. There is a 50% chance the children will be ww, and will therefore have a smooth hairline.
So, It is possible for their children to either have widow's peak or a smooth hairline.
2. Sperm and egg combine in ______________ to produce a zygote with the normal number of chromosomes.
Answer:
Fertilization
Explanation:
Fungi may cause disease in humans through
A. Allergies only
B. Infection and allergies
C. Infection only
D. Infection, poisoning, and allergies
Answer:
i am not sure but probaby d
Explanation:
The occurrence of discarded fishing gear still catching or entangling fish is known as _______
A. ghost fishing.
B. lost fishing.
C. overfishing.
D. bycatch.
Answer:
ghost fishing
Explanation:
Answer:
A
Explanation:
Researchers are studying the abnormal activity of kinases in relation to cancer. Theoretically, how might researchers use signal transduction pathways to influence the environment of cancer cells for treatment? (3 points)
Disrupt the function of protein kinases involved in cell cycle regulation
Inactivate epinephrine receptors on cancer cells
Stimulate production of cAMP in cancer cells
Alter G protein-coupled receptors involved in cell cycle regulation to be active in the absence of their normal signaling molecules
Answer:
I am pretty sure that the answer is A.
Explanation:
Protein kinases regulate the cell cycle by giving the "go-ahead" or "stop" signal at checkpoints in the cycle. A mutation/disruption in the protein kinases can result in it not doing its job properly. As a result, it can give the 'go-ahead' signal to all cells (mutated or not) to continue through the cell cycle. A distrupted kinase will infleunce the enviornment for a cancer cell as the cancer cell can continue to divide continuously.
I do not think the answer is D because G-couped receptirs are not involed in the regulation of the cell cycle. Additionally, I do not think the answer is C since the production of cAMP (a secondary messgenger amplifies transduction signals; this doesn't have anything to do with cancer?) Finally, between A and B I know that a direct result of cancer is due to a distruption in either protien kinases or growth factors (not in the answer choices). Since one of the factors that leads to cancer is present in answer choice A, I think that is the one. However, this is just my reasoning, I am not 100% sure!
Which step in the digestive process represents a chemical change in food?
Answer:
digestion
Explanation:
Name a structural difference between triglycerides and phospholipids
Answer:
Phosphate group is the structural difference between triglycerides and phospholipids. A triglyceride contains three fatty acids attached to the glycerol backbone whereas a phospholipid has two fatty acids and a phosphate group attached to the glycerol.
Explanation:
Predict the effects of injuries to the following structures: Cerebellum, Pons, Thalamus
Answer:
Explanation:
if cerebellum become injured then problems occur in those activities of the body which are controlled by cerebellum like speeching,thinking,learning and sensation of sound and light.
if pons become injured then problems occur in those activities of the body which are controlled by pons like inspiration expiration biological and rhythm.
thalamus control pleasure and fear feelings so if thalamus become injured then problems occur in pleasure and fear feelings
Given the chemical formula, how is this substance MOST LIKELY classified?
A)
atom
B)
compound
09)
both atom and compound
D)
neither atom nor compound
biological buffers work to keep pH in your body on a range of
Biological buffers usually work to keep pH in your body on a range of 1500 - 3000.
