Answer:
respiratory system fills the blood with oxygen and gets rid of the carbon dioxide while the cardiovascular system umps the oxygen rich blood all over the body (short answer)
Explanation:
the respiratory system aids in the supply of oxygen to the blood and the exit of carbon dioxide. when the heart takes in blood that is short of oxygen and full of carbon dioxide, the pulmonary arteries pumps the blood to the lungs, who then fill the low oxygen blood with oxygen and transport the carbon dioxide out of the lungs. this oxygen rich blood, which now has a rich amount of hemoglobin, is transported to the heart which is pumped or circulated it to the entire body. (long answer)
hope this helps !!
In a certain ecosystem, there is a population of lynx that feed on snowshoe hares. If there is less food for the hare for several years, what will most likely be the result for the lynx population?
A. The lynx population will increase.
B. The lynx population will decrease.
C. The lynx population will go extinct.
D. The lynx population will stay the same.
Answer:
B
Explanation:
since the will be less food for the hare, less hare will be able to survive. that means some lynx will not get hare and the lynx will die which means the lynx population will decrease
Regions with otters tend to host dense forests of kelp, a brown seaweed that anchors to the seafloor. Kelp forests provide a physical structure in which diverse marine communities find shelter and food. Sea otters prey on urchins, which consume kelp. According to James Estes, sea otter populations have dropped dramatically in Alaska and the Aleutian Islands. If sea otter populations in these areas continue to decline, what might happen with populations of sea urchins and kelp
Answer: the urchin population will grow very large and the kelp will diminish
Explanation:
Answer:
the urchin population will grow very large and the kelp will diminish
Explanation: Also, reminder to drink some water, relax. You are LOVED! <3 :)
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Adaptive radiation is often seen after which of the following events? (4 points)
Mass extinctions
Sexual selection
Genetic drift
Founder effect I think is A
Answer:
genetic drift I'm pretty sure
Explanation:
have an amazing day!!!!!!!
Answer:
mass extinctions
Explanation:
A light detector the pattern shown. What is the most likely location of the light detector..
A.Location A
B.Location B
C.Location C
D.Location D
Answer:
d
Explanation:
Translation occurs in the _______
of a eukaryotic cell.
A ribosome
B chromosome
C cytosome.
D autosome
Answer:
A
Explanation:
D isn't a real thing in the cell
Which of these statements is true of ecosystems? a animals do not travel from one ecosystem to another ecosystem b the total amount of energy in an ecosystem does not change c air cannot be used by organisms once the air moves out of the ecosystems d matter lost by one ecosystem is gained by the surrounding environment
Answer:
I think the answer is B. I think energy decreases as it moves up tropic levels when it is lost as the organisms from one level consume the organisms in the other.
Explanation:
It can't be A because animals do travel from one ecosystem to another. It's migration. It's not C because air can be used by organisms as once as the air moves out of their ecosystem because air is everywhere and the organisms need air to breathe and to live. D is definitely incorrect because matter can't be created or destroyed. Remember that an ecosystem is the organisms physical environment. I hope this answers your question.
D, matter lost by one ecosystem is gained by the surrounding environment
Explanation: Here's an explanation for why D is right and all the other ones are wrong.
D- when matter is lost from one ecosystem, it is often gained by another nearby ecosystem. For example, when leaves fall from trees in a forest, they decompose and release nutrients into the soil. These nutrients can then be taken up by plants in the same ecosystem or be transported by water runoff to other ecosystems, such as rivers or lakes. This process of matter transfer ensures the cycling of nutrients within and between ecosystems.
A- animals can and do travel from one ecosystem to another. Birds migrate between different habitats, and some animals spread seeds or pollinate flowers in multiple ecosystems. B- the total amount of energy in an ecosystem does change over time. Energy enters an ecosystem through photosynthesis, where plants convert sunlight into chemical energy. This energy is then passed on to other organisms through the food chain. However, energy is lost as heat during these transfers and eventually leaves the ecosystem, resulting in a decrease in the total amount of energy available. C- organisms rely on air for respiration, and the exchange of gases, like oxygen and carbon dioxide, occue between organisms and the air in the environment. While air moves in and out of ecosystems, organisms continuously utilize the air for their survival.
The __ is a series of geologic processes in which rock can form, change form one type to another, be destroyed, and form again.
Answer:
rock cycle
Explanation:
Someone please answer i’ll give you brainliest.
Answer:
You can go with first option
Explanation:
First option contains mitochondria, vacuole, nucleus, cell membrane, cytoplasm
These elements contained by both cells animals and plants
But in other option cell wall is also in the options
So, but it is contained by plant cells only so they are not correct
THANK YOU
If you are helped with my answer pls tag me brianliest I really want it.......
Which term describes resistance to change in motion?
A. acceleration
B. inertia
C. net force
D. velocity
Answer:
Newton's second law of motion states that the accelaration of an object is directly proprotional to the force acting upon it. In symbols, we can write this as
[tex]F= ma[/tex]
Wher F is the force acting upon the object, m is the object's mass, and a is the object's acceleration. We can multiply both sides of this equation by 1/m to get the equivalent equation
[tex]\frac{1}{m} F= a[/tex]
What happens when we make m higher and higher? Well, that fraction 1/m gets closer and closer to zero. The same force accelarates the object less and less as that object becomes more massive. This consequence of Newton's second law, the resistance of massive objects to changes in acceleration, is called inertia, and it's one of the main expressions of mass in classical mechanics.
Answer:
acceleration
Explanation:
The brown-colored bones in each animal help to connect their limbs to a specific joint in the torso, or middle of their body. What type of structure do these bones represent, and what is their significance in terms of evolutionary relationships?
Answer: These structures connect their limbs to a specific joint in the torso or in the middle of their body. These structures can be identified as homologous, they are morphologically similar or possibly they derive from a common ancestral structure.
Explanation:
The brown color bones in animal help to connect limb homologous structures that connect their limb to the specific joint in the torso, this and having an evolutionary relationship.
What are bones?If two bones split where they meet at a joint, it is termed a dislocation. The place where two bones connect and therefore can move is called a joint.
A displaced joint is one where the bones are out of alignment with each other having a significant role in evolution.
Despite their similar arrangements and being formed in a similar way throughout embryonic development, these structures have slightly different shapes and purposes, they refer to them as homologous structures.
Therefore homologous structures have an evolutionary relationship to connect brown-colored bones connect limbs to joint torso.
Learn more about bone, here:
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Which of the following is a major cause of extinctions?
volcanic eruptions
O earthquakes
solar flares
O overharvesting species
Answer:
volcanic eruptions
Explanation:
A "healthy ecosystem" can also be described as
Which of the following is not a source greywater?
A)
sea
B)
water from the bathroom
C)
laundry
D)
dishwasher in the kitchen
Answer:
a
Explanation:
it's a I like chicken is that cool
Answer:
(A) Sea water
Explanation:
Grey water is the water that comes out of your pipes toilets' and laundry the definition of grey water is "the relatively clean waste water from baths, sinks, washing machines, and other kitchen appliances. Compare with black water"
What did the first cells form from? What kind of cells where
they?
Answer:
The first cells were most likely primitive prokaryotic-like cells, even more simplistic than these E. coli bacteria. The first cells were probably no more than organic compounds, such as a simplistic RNA, surrounded by a membrane.
Answer:
I agree with xXMaryaXx. I'm pretty sure she has the answer you are looking for :)
Explanation:
what is one difference between ion channels and ion pumps
Answer:
Ion pumps can be distinguished from ion channels on the basis that ion pumps actively transport ions against a concentration gradient, while ion channels allow ions to passively flow down a concentration gradient.
Explanation:
the ovary develops into the?
Answer:
Ovules
I hope this helps!
Answer:
fruit
Explanation:
The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds
Which statement best distinguishes aerobic from anaerobic respiration?
A. Only aerobic respiration involves fermentation.
B. Only anaerobic respiration occurs in the mitochondria.
C. Only aerobic respiration requires oxygen.
D. Only anaerobic respiration produces carbon dioxide.
Answer:
C. Aerobic respiration
Explanation:
Aerobic respiration occurs when oxygen is present
Anaerobic respiration occurs in the absence of oxygen. Anaerobic respiration is usually associated with fermentation process (eg Alchohol production)
The main difference between aerobic and anaerobic respiration is that aerobic respiration needs oxygen to occur, while anaerobic respiration does not. Option C. Only aerobic respiration requires oxygen.
What is cellular respiration?
Aerobic and anaerobic respiration occurrence depends on the presence or absence of oxygen. Option C. Only aerobic respiration requires oxygen.
Cellular respiration follows two ways, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.
What is Aerobic Respiration?This type of respiration occurs in the presence of free oxygen. It involves a series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.
Aerobic Respiration occurs in mitochondria, and takes place in two steps or stages: Krebs cycle and electron transporter chain.
Glycolysis and Krebs cycle produce electrons. These electrons then travel along the electron transporter chain while releasing energy, and ATP is produced.
What is Anaerobic Respiration?This is the type of respiration that occurs in the absence of free oxygen.
It is also a series of reactions by which the cell produces 2 ATP molecules by using pyruvate (product of glycolysis).
Anaerobic respiration can occur in two ways: lactic fermentation and alcoholic fermentation.
Lactic fermentation produces lactic acid and 2 ATPAlcoholic fermentation occurs in two steps, and the final products are ethylic alcohol, 2ATP, and 2 CO₂The whole anaerobic process occurs outside the mitochondria.
Options:
A). Only aerobic respiration involves fermentation. FALSE.
Anaerobic respiration involves fermentation.
B). Only anaerobic respiration occurs in the mitochondria. FALSE.
Aerobic respiration occcurs in mitochondria and anaerobic respiration occurs in the cytoplasm.
C). Only aerobic respiration requires oxygen. TRUE
Anaerobic respiration does not need oxygen.
D). Only anaerobic respiration produces carbon dioxide. FALSE
Alcoholic fermentation produces CO₂ too.
The correct option is C. Only aerobic respiration requires oxygen.
You can learn more about aerobic and anaerobic cellular respiration at
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Beginning at the synapse of a neuron, place the events in neuronal signaling in the correct sequence. 1. Ion channels bind the ligand and open. 2. Na is pumped out of the cell, and the membrane potential is restored. 3. Acetylcholinesterase breaks down acetylcholine. 4. Na enters the postsynaptic cell, and the membrane potential changes. 5. Acetylcholine is released into the synapse. 6. Na ion channels close. 4, 5, 1, 2, 6, 3 6, 4, 3, 1, 2, 5 3, 4, 6, 1, 5, 2 1, 2, 3, 4, 5, 6 5, 1, 4, 3, 6, 2
Answer: 5, 1, 4, 3, 6, 2
Explanation:
The synapse is an intercellular approach between neurons or between a neuron and a muscle or glandular effector cell. At the synapse, the transmission of the nerve impulse takes place. This is initiated by a chemical discharge that causes an electrical current in the membrane of the presynaptic cell (sending cell). Then, once this nerve impulse reaches the end of the axon (the connection with the other cell), the neuron secretes a chemical compound called neurotransmitter that is deposited in the cleft or synaptic space (intermediate space between this transmitting neuron and the postsynaptic or receiving neuron). These secreted substances or neurotransmitters (noradrenaline and acetylcholine among others) are responsible for exciting or inhibiting the action of the other cell called postsynaptic cell.
The events are:
Acetylcholine is released into the synapse (5): Acetylcholine is a neurotransmitter that is released at synapses in response to a specific stimulus. The secreted neurotransmitter acts on specialized receptor sites on the postsynaptic cell, which causes changes in the metabolism of the postsynaptic cell, modifying its cellular activity. Ion channels bind the ligand and open (1): The channels control the transmission between neurons because they bind neurotransmitters and open in response to a ligand. So the neurotransmitters diffuse across the cleft and bidn to receptors.Na enters the postsynaptic cell, and the membrane potential changes (4): Sodium channels open and allow an inward diffusion of sodium ions (Na+) from the outside to the inside. This causes the membrane potential to become less negative or more positive or to approach the threshold potential. Next, this triggers an excitatory potential (EPSP) so it causes the postsynaptic membrane to depolarize and fire an action potential. which spreads along the membrane of the post-synaptic neuron. This means an impulse is transmitted.Acetylcholinesterase breaks down acetylcholine (3): Acetylcholinesterase is an enzyme that breaks down the neurotransmitter so it causes the inactivation of acetylcholine into acetic acid and choline. Na ion channels close (6): Na channels open and close according to different signals. The peak voltage causes them to close, and potassium channels open. So sodium ions stay inside the cell while potassium ions move outside of it. When this happens, repolarization (change in membrane potential that retunrs it to a negative value) takes place. Potassium channels remain open after the potential reaches the resting level causing hyperpolarization (the membrane potential becomes more negative) and it alters the ability of certain of ions to enter the cell. At the end, the cell has more K+ ions on the outside.Na is pumped out of the cell, and the membrane potential is restored (2): The sodium-potassium pump moves sodium ions to the outside and potassium ions to the inside.How does stopping at checkpoints benefit the cells?
Which of the following correctly shows one path that energy would flow through this ecosystem?
Star grass — termite-wildebeest aardvark
O
Hyena — aardvark impala - harvester ant
О
Grasshopper termite-Warthog hare
O
Red oat grass — termite - wildebeest — lion
Answer: g
Explanation:
Many paleontologists hypothesize that present-day whales evolved from ancient ancestors that had four legs and walked on land. Evidence for that
hypothesis would be a sequence of whale-like fossils
A. in which the oldest fossils had flipperlike appendages and the most recent fossil had four limbs.
B. in which the oldest fossil had four limbs and the most recent fossil had flipperlike appendages.
C. that indicate that the ancestors of present-day whales were wiped out during a mass extinction.
D. that indicate that whales evolved before animals with four legs.
Answer:
B
Explanation:
If the oldest fossils showed legs and the more recent ones had only flippers, it would show the change over time.
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A certain reaction is endothermic in the forward direction. The reaction has less moles of gas on the product side. Which of the following stresses would increase the yield of the products (shift right)? (4 points)
Increasing the volume
Decreasing the pressure
Increasing the temperature.
Decreasing the reactant concentration
How does an amino acid-based hormone changes a cells activity
Answer:
such as glucagon, bind to membrane-bound receptors. The binding of the hormone triggers a signal transduction pathway, a process of molecular changes that turns the hormone's extracellular signal into an intracellular response.
Explanation:
How does an amino acid-based hormone changes a cells activity ?
The majority of amino acid-based hormones, such as glucagon, bind to membrane-bound receptors. The binding of the hormone triggers a signal transduction pathway, a process of molecular changes that turns the hormone's extracellular signal into an intracellular response.
I really hope this helps!! Have an amazing day <3
What is true of the genetic makeup of all body cells in the human body except for sex cells?
Answer:
It is the same no matter what the cell type. It is random even within the same cell type. It is used to sort cells into organs based on chromosomal differences.
Explanation:
Which statement is an example of variation within a species? picture attatched.
A. Birds have wings, and so do butterflies.
B.Some squirrels are gray, and others are brown,
C.A lion roars and so does a tiger.
D.Dinosaurs are extinct but we know that they existed because of fossils.
Answer: B
Explanation: The other answers are talking about similarities among different species.
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Which of the following would provide the best evidence to support the claim that acid rain has a long-term effect on the stability of ecosystems?
Extinction of aquatic and terrestrial organisms would occur, decreasing species diversity and ecosystem stability.
The mutation rate would increase and new species would evolve, destabilizing ecosystems.
The pH level would increase and become intolerable to organisms, leading to decreased species diversity and ecosystem stability.
Habitat loss would occur, forcing organisms to adapt to new surroundings until the ecosystem eventually stabilized.
Answer:
A
Explanation:
Extinction of aquatic and terrestrial organisms would occur, decreasing species diversity and ecosystem stability.
Jeremy listed the steps involved in one stage of photosynthesis. Which label best classifies all three of these steps?
Energy is used to make food.! I think it this?
What type of trait is the body length?
___ is the process the body uses to break down food
Answer:
Digestion
Explanation:
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the blood stream
Which of the following represents a heterozygous genotype?
A. GG
B. gg
C. Gg
D. none of the above
Answer: C) Gg
Explanation:
A heterozygous mixtures include two different genes:
A Dominant and a Reccessive gene. Inorder to have a mixture, you need two different genes, explaining why it would be C.