Neurotoxins are any compound that can interfere with the normal functioning of the nervous system.
When a neurotoxin binds to specific receptors on a neuron, it can prevent normal neuron functioning which can affect the neurotransmitter release and its ability to synthesize them. The effects of neurotoxins on neural function depend on the type of neurotoxin and its target receptor.
For instance, some neurotoxins that target chemical synapses, such as botulism, can produce paralysis by blocking acetylcholine from being released from the presynaptic neuron and preventing its binding to the postsynaptic neuron.
Other neurotoxins, such as glutamate agonists, can increase the release of glutamate from the presynaptic neuron which can excite the postsynaptic neuron more than usual leading to nerve cell death. In either case, abnormal neural function resulting from neurotoxins can lead to loss of motor control, paralysis, or even death.
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In DNA, if the % of adenine is 30%, what is the % of thymine?
Answer:
35%
Explanation:
Since we know that 35% of the bases in the section of DNA are adenine, we can conclude that 35% of the bases are thymine.
The early ancestors of horses showed the presence of digits on their limbs, while modern horses have hooves. What are likely possible reasons for this change?
Answer:
The digets were most likely not needed anymore so as the horses evolved hey gain other traits to help them survive.
What are the two main types of weathering?
Answer:
Chemical weathering and physical weathering.
Explanation:
What conditions allowed so many different kinds of mammals to
evolve during the Cenozoic Era?
A. Grasses evolved providing food to larger grazing animals, no dinosaurs which made way for mammals
B. Overpopulation of ocean algae allowed for more fish to thrive following more species of fish to exist
C. No dinosaurs so mammals were forced to evolve or die
D. More macrobiotic organisms caused the evolution process to happen at a quicker rate
Answer:
A. Grasses evolved providing food to larger grazing animals, no dinosaurs which made way for mammals
Which protists contain both chloroplasts and eyespots?
A .amoeba and paramecia
B. volvox and paramecia
C. euglena and amoeba
D. euglena and volvox
.
D. Euglena and volvox contain both chloroplasts and eyespots.
What are protists?
Protists are single-celled microorganisms that belong to the kingdom Protista. They are unicellular organisms that are not classified as bacteria, fungi, or animals, and are the simplest of the eukaryotes (organisms with a true nucleus and other membrane-bound organelles). Protists are found in a wide variety of habitats, from freshwater to marine environments, and are important for their role in the food chain, as well as for their impact on human health.
Protists come in a wide range of shapes and sizes, from amoeba-like organisms that can change shape, to algae with chloroplasts, to parasites that can cause diseases in humans and other animals. Some protists can move on their own, while others are immobile. Some can reproduce asexually, while others reproduce sexually. Despite their diverse forms and functions, all protists are considered to be part of the same kingdom because of their shared characteristics and evolutionary relationships.
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if a middle level species were removed from the community, how might the flow of energy be affected? Explain your answer.
When organisms
they increase in size.
Answer:
The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.
Explanation:
Which answer choice accurately depicts the sequence by which blood moves from the pulmonary vein to the body tissues?
Answer:
See the answer below
Explanation:
Oxygen-rich blood flows from the lung through the pulmonary vein to the left atrium of the heart. From there, the blood is pumped through the mitral valve to the left ventricle. The contraction of the left side of the heart sends the oxygenated blood out of the left ventricle through the aortic arch to the major arteries designated to carry blood to the major parts of the body. From the arteries, blood moves to the capillaries and then to the various tissues of the body before returning back to the heart through the vein.
Thus, the sequence of flow of blood from the pulmonary vein to the body tissues can be summarized as:
Pulmonary vein -> Left atrium -> Arteries -> Capillaries -> tissues
can someone write me a essay of Photosynthesis for 30 points URGENT!!! It has to be highschool level
Answer:
Here, I got u homie!
Explanation:
Photosynthesis is the process through which green plants and other specific living organisms utilize light energy to convert water and carbon dioxide in to simple sugars. Through photosynthesis, green plants are able to manufacture their own food which is essential for their growth.
Plz give brainliest
There is the picture to the question
Answer:
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
5 important things Gregor John Mendel did
Where a stream leaves a mountain range youll find an?
Which gas is released during the light reactions of photosynthesis?
A. Carbon dioxide gas
B. Oxygen gas
C. Nitrogen gas
D. Methane gas
A species of bacteria is found deep within the Earth’s crust. Which process will the bacteria use to obtain energy?
A. Cellular Respiration
B. Photosynthesis
C. Lactic Acid Fermentation
D. Alcoholic Fermentation
Which of the following is not a reactant needed for photosynthesis?
A. Sunlight
B. Oxygen
C. Carbon Dioxide
D. Water
Answer:
B for your first question.
A for your second question.
B for your third question.
Explanation:
I hope this helps!
Explain how an animal grows?
Answer:
big liitle fat
Explanation:
Answer:
The primary way that animals grow and develop is by building more cells. When an animal eats food, its body breaks the food down and uses it to fuel its energy requirements and build new cells through the process of mitosis. These new, or daughter, cells are often similar in size to the old, or parent, cells.
Explanation:
How is carbon recycled in photosynthesis and cellular respiration ?
A cell contains the structure shown below that contains chlorophyll and is the site of photosynthesis. What
other cell structure that is not found in all eukaryotic cells, is likely to be found in this cell?
A. Mitochondria
B. Cell Membrane
C. Cell wall
D. Cytoplasm
The cell wall is found in plant cells but is absent in animal cells. Therefore, option C is correct.
What is a cell wall?Cell walls are a specific type of extracellular matrix that covers every plant cell. Many of the traits that set plant cells apart from animal cells are caused by the cell wall.
Plant cells have a cell wall that surrounds their plasma membrane and offers tensile strength as well as defense against osmotic and mechanical stress. Additionally, it enables the development of turgor pressure or the pressure of the contents of the cell against the cell wall.
The pectin polysaccharide matrix, which is highly cross-linked, contains a matrix of cellulose microfibrils and cross-linking glycans that make up the cell wall. Lignin may accumulate in secondary cell walls. Therefore, option C is correct.
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When compared to a cheek cell, a muscle cell would contain more
Answer:
Chromosomes
Explanation:
Which type of rock does B represent?
Igneous rock
Metamorphic rock_
Rock formed by compaction
Rock formed by heat and pressure
Answer:
Igneous rock
Explanation:
Solidified lava is an igneous rock.
Please help me can you please help really quick
Answer:
b
Explanation:
The greatest amount of kinetic energy is at the lowest point of the roller coaster. The least amount of kinetic energy is at the highest point of the roller coaster
Answer:
b
Explanation:
NEED HELP ITS DUE AFTER MY WINTER BREAK!
Answer:
For question 1 the answer is respiratory, and for question 2 is circulatory
Answer: (1) Circulatory (2) Respiratory
What type of metamorphosis does a monarch butterfly undergo?
1. complete metamorphosis
2. incomplete metamorphosis
Answer:
1. complete metamorphosis
Answer:
Complete Metamorphosis
Explanation:
This means that there are four distinct stages: an egg, larva (caterpillar), pupa (chrysalis), and adult stage.
All developed countries, in some way, are moving towards which type of energy?
Non-Renewable Energy
Solar Energy
Non-Pollutant Energy
Renewable Energy
Answer:
Renewable Energy
Explanation:
A cell is placed in a hypertonic solution. Which will most likely occur as homeostasis is maintained in the cell?
A.
The cell will gain ATP molecules.
B.
The cell will gain water.
C.
The cell will lose water.
D.
The cell will lose sodium ions.
Answer:
B the cell will lose water
Explanation:
Because of the hypertonic solution water will move on the concentration gradient leaving the cell and entering the solution. Thus the cell looses water.
When a cell is placed in a hypertonic solution, it will most likely lose water (Option C) as homeostasis is maintained in the cell.
What is homeostasis?Homeostasis is the ability of an organism or a system to maintain a relatively stable internal environment, despite changes in external conditions. It is a key aspect of biology that helps living organisms survive in their environment. Homeostasis is maintained through a series of physiological processes that regulate different aspects of an organism's biology, such as temperature, fluid balance, and pH
A hypertonic solution is one that has a higher concentration of solutes (e.g. salts) outside the cell compared to inside the cell. This creates an osmotic pressure gradient, which draws water out of the cell and into the solution in an attempt to balance the concentration of solutes on both sides of the cell membrane. As a result, the cell will shrink and lose water.
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11)
How are genetic mutations passed from parent to offspring?
Answer:
Some mutations are hereditary because they are passed down to an offspring from a parent carrying a mutation through the germ line, meaning through an egg or sperm cell carrying the mutation. There are also nonhereditary mutations that occur in cells outside of the germ line, which are called somatic mutations.
I hope it's helpful!
Answer:
★ Mutated gametes (sex cells) fuse to create offspring.
Genetic mutations or germline mutations can be defined as a permanent change in the DNA sequence of germ cells (cells, which form ovum and sperm). These mutations can pass from one generation to other when a mutated sperm or mutated oocyte (gametes) get fertilized with another oocyte or sperm.
A germline mutation, present in a single-celled zygote will present in all cells of a muticellular organism, a single-celled zygote divides and produces all of the cells in that organism.
Explanation:
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which category of birds can find food on both land and large body of water
Answer:
A seabird can find food on both land and sea
Need help on this *URGENT*
Why is West Ferris not running out of water?
Answer:Pq ele é bom no que faz e está sempre a paum sso a frente da humanindade
Explanation:
Rearrange the steps of a tsunami formation in the correct order
1. two tectonic plates slide past each other underwater, causing a large movement of water
2. large ocean waves form
3. large ocean waves move in all directions away from the shifting plates
4. large ocean waves slow down and increase in height as they reach the coast
Answer:
two tectonic plates slide past each other underwater, causing a large movement of water large ocean waves form .large ocean waves move in all directions away from the shifting plates .large ocean waves slow down and increase in height as they reach the coastExplanation:
Tsunamis are initiated underwater and usually happen as a result of underwater earthquakes which can be initiated when tectonic plates slide past each other.
This causes a large movement of water such that large waves form and move away in al directions from the source. As these waves approach the shore they slow down speed but this only increases their height such that when they make landfall the effect could be devastating.
Hydrophobic interactions are the basis for Sudan tests. Explain how hydrocarbons in lipids interact with polar surroundings
Answer and Explanation:
Lipids are non-polar molecules, so they do not interact preferentially with polar molecules but they can interact with each other. In a polar medium, such as water, the hydrocarbons in lipids aggregate each other, in order to minimize contact with surrounding polar molecules. The interaction between non-polar solutes with polar surroundings exclusion is called hydrophobic interaction.
What gas is broken down in the Calvin Cycle
Answer:Carbon dioxide
Explanation:
Explanation:
carbon dioxide molecules