most matter in ecosystems is lost as oxygen
true or false
Answers
Related Questions
why it is important for humans to understand our impact on the environment.
Answers
It is essential for humans to understand our impact on the environment because it directly affects our health, quality of life, and future survival.
Our actions have led to environmental degradation, pollution, climate change, and the loss of biodiversity. By recognizing our role in these issues, we can take steps to reduce our negative impact on the environment and promote sustainability. This includes adopting eco-friendly practices, reducing waste, conserving natural resources, and preserving ecosystems.
Ultimately, understanding our impact on the environment is necessary for ensuring a healthy planet and a sustainable future for ourselves and future generations.
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True/false, if false explain why the conducting cells of phloem are thin-walled, metabolically active sclerenchyma cells.
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Phloem transports the food which formed in leaves during photosynthesis .
Describe the structure of phloem.The many components of phloem include companion cells , seive tubes , phloem parenchyma and phloem fibres . Sugar and nutrients are moved up and down the plant's seive cells using sieve tubes. Companion cells manage the seive tube's Operation. Phloem parenchyma gives the plant its mechanical sturdiness.
The phloem sclerenchyma is comprised of sclerenchyma cells that are rather associate with providing mechanical support than conducting materials. It includes the phloem fibres and the sclereids.
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Which statement summarizes how the United States uses different energy sources?
1. The United States has always used non-renewable and renewable energy sources equally.
2. The United States has started to use more renewable energy sources, but is still mostly dependent on non-renewable energy sources.
3. The United States uses only renewable energy sources.
4. The United States uses only non-renewable energy sources.
Answers
Answer:
2
About 60% of this electricity generation was from fossil fuels—coal, natural gas, petroleum, and other gases. About 18% was from nuclear energy, and about 22% was from renewable energy sources
The __________ and __________ systems work together to support the body and enable it to move.
Answers
Answer: Skeletal and muscular
Explanation:
Answer:
The muscular and skeletal systems work together to support the body and enable it to move.
Which of the following is true about secondary consumers in an ecosystem?
(A) They eat only plants.
(B) They are eaten by primary consumers
(C) They are smaller and weaker than are primary consumers.
(D) They are fewer in number than are primary consumers.
Answers
Answer:
Explanation:
B
Answer:
(D) They are fewer in number than are primary consumers.
Explanation:
Secondary consumers prey on primary consumers which are mostly herbivores.
true or false, postsynaptic cells, in turn, add receptors from their membranes to make it less difficult to stimulate the cell and cause an action potential
Answers
The given statement "postsynaptic cells, in turn, add receptors from their membranes to make it less difficult to stimulate the cell and cause an action potential" is False because Postsynaptic cells do not add receptors from their membranes to make it less difficult to stimulate the cell and cause an action potential. In fact, the process is usually the opposite.
Postsynaptic cells, which receive signals from presynaptic cells at chemical synapses, contain receptors on their membranes that specifically bind with neurotransmitter molecules released by the presynaptic cell. These receptors are proteins that are already present in the postsynaptic cell membrane and are not added or removed based on the difficulty of stimulating the cell.
When neurotransmitters bind to their specific receptors on the postsynaptic cell, it can either excite or inhibit the postsynaptic cell's activity. Excitatory neurotransmitters can depolarize the postsynaptic membrane, making it more likely to generate an action potential, while inhibitory neurotransmitters can hyperpolarize the membrane, making it less likely to generate an action potential.
The number and sensitivity of receptors on the postsynaptic cell membrane can be dynamically regulated through processes like long-term potentiation or long-term depression, which can affect the strength of synaptic connections over time. However, these processes are not directly related to the difficulty of stimulating the cell but rather to the strength and efficacy of synaptic transmission.
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(50 points) Think about the renewing of cells in a human body. What would happen if new cells stopped forming when we reached maturity while old cells never died off? Then consider what would happen if new cells continued to form while old cells never died off?
Answers
Answer:
We would gradually decay, and it would be horrific, and if new cells contiued to form it would also be pretty horrific
Explanation:
If we reached maturity while old cells never died off , this would heighten the risk for genetic and hereditary disorders, and new cells are not formed through mitosis, and are unable to replace inefficient or cells with damages, whether it not be to the DNA or other organelles.This would cause a significant decline of production in our body, and would also cause cells such as your skin cells, to be at a heightened risk of genetic and hereditary disorders and diseases such as cancers and melanomas
If our cells continued to form while old ones never died off, if would also be very inefficient for our bodies, as the amount of energy and ATP required to support an ever-growing cell population of that size would leave us wanting to eat more and more each day to fufill our daily metabolic processes, leaving us skinny and weak.This would also cause a loss of some function in some areas, because some areas require more energy than others, such as your pulmonary and cardiovascular system, and could result in wasting of muscle tissure, as they would not be getting the nutrients needed
If new cells would stop forming once maturity is reached, and old cells would never die. Genetic disorders would be more common, cells with damage would not be replaced, hereditary disorders would also be more common, such as cancers and others. If new cells continued to form and old cells would never die off, the amount of energy that is required to normally support us would leave us wanting more food each day to achieve our metabolic process.
examples.
Protein
a. Long term energy storage and
heat insulation (keep warm)
Carbohydrate
b. Make up the cell wall (Cellulose)
and short term energy
Lipid
c. Store genetic information
DNA
d. Speed up the rate of chemical
reactions with enzymes
NOTES Definitions:
Answers
Answer:
cellulose is the answer
Explanation:
carryonleanring
State that lipids (fats and oils) are a range of biological molecules including triglycerides.
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Lipids are a diverse group of biological molecules that are characterized by their insolubility in water and solubility in nonpolar solvents.
Solvents are substances that can dissolve other substances to form a homogenous mixture, usually a liquid. They are commonly used in a variety of industries, including pharmaceuticals, cosmetics, cleaning products, and paint manufacturing.
Solvents can be classified into two main categories: polar and non-polar. Polar solvents, such as water, have a positive and negative charge distribution, which allows them to dissolve polar substances like salts and sugars. Non-polar solvents, such as benzene, have no net charge and can dissolve non-polar substances such as oils and fats. However, solvents can also have negative effects on human health and the environment. Many solvents are toxic, flammable, and can cause skin irritation or respiratory problems.
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What is the role of chromosomes in the cell nucleus?
Explain in 5 - 10 sentences
Answers
Answer:
Chromosomes are tightly packed DNA and proteins. The DNA and proteins take on a tightly coiled structure within the chromosome. The chromosomes are then kept inside the nucleus. Their role is to carry basic genetic material. This provides the cell with genetic information that's used to carry out different cellular functions. These functions include survival, growth, and the ability to reproduce.
Which part of the neuron below is indicated by the arrow, and what is its function? The long section of a neuron that includes structures that wrap around the neuron are indicated by the arrow. The axon carries information through electrical impulses away from the cell body to the axon terminals. The axon contains the nucleus that controls all the activities of the cell. The dendrites regulate the substances that go in and out of the cell. The dendrites carry the electrical impulses from the signal receivers to the cell body.
Answers
Answer:
The answer is D. I am telling you this because i got it correct on the quiz, 90%. Not to brag.
Explanation:
Which part of the neuron below is indicated by the arrow, and what is its function?
The dendrites carry the electrical impulses from the signal receivers to the cell body.
Now mark me brainliest please :) im trying to level up.
A neuron is the structural and functional unit of the nervous system.
What wraps around the neuron?Schwann cells form the myelin sheath around the neurons of the peripheral nervous system while oligodendrocytes in the central nervous system.
What is its function?It creates an insulation layer and helps in the quick transmission of impulses.
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Why are the properties of the asthenosphere important? Check all that apply.
Answers
Answer:
The asthenosphere keeps Earth's crust from getting too hot. Earth's plates float on the denser asthenosphere. The depth of the asthenosphere keeps pressure on Earth's core. The asthenosphere allows Earth's crust to move.
Explanation:
Plz Brainly
Answer:
earth plates float on the denser asthenosphere
the asthenosphere allows earth crust to move
Explanation:
edge
When the cell grows, prepares for division and divides into two new cells.
Answers
The cell cycle is the series of events that occur in a cell leading to its division and duplication of its DNA to produce two daughter cells.
The cycle consists of two main stages: interphase (G1, S, G2) and the mitotic phase (M). In interphase, the cell grows, replicates its DNA, and prepares for division. During the mitotic phase, the cell physically divides into two identical daughter cells through processes such as chromosome condensation, nuclear envelope breakdown, and formation of the cleavage furrow. This is regulated by checkpoints that ensure proper DNA replication and segregation before cell division can occur. The cell cycle is essential for the growth and repair of tissues and organisms.
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an individual bird might sacrifice itself to a predator in order to help save the flock. this is an example of:
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An individual bird might sacrifice itself to a predator in order to help save the flock. This is an example ofIt is an example of Kin Selection.
A predator is an animal that eats another animal. Context: Hawks and coyotes both consume small rodents; they are predators. Prey: animals that might be killed and eaten by different animals. Context: Rabbits and crickets are both eaten by larger animals; they're prey.
Even though people may be attacked by many styles of non-human animals, man-eaters are those that have included human flesh in their standard food plan and actively hunt and kill human beings.
Despite the fact that they cover it in the back of fascinating and misleading facades, Emotional Predators usually ruthlessly use others to get what they want.
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Select the correct answer from each drop-down menu.
A researcher was studying mutations in bacteria. He found that certain bacteria had changes in their DNA that allowed them to be resistant to antibiotics. This research is an example of
. The mutation will lead to
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The researcher studying mutations in bacteria and discovering that certain bacteria had DNA changes leading to antibiotic resistance is an example of genetic adaptation. The mutation in bacteria's DNA enables them to survive and multiply even in the presence of antibiotics, making them resistant to the drugs.
1. The researcher's study revolves around mutations in bacteria.
2. The researcher finds specific changes in the DNA of bacteria.
3. These DNA changes enable the bacteria to be resistant to antibiotics.
4. This discovery showcases genetic adaptation in bacteria.
5. Genetic adaptation refers to the process in which organisms undergo genetic changes that allow them to survive and reproduce better in their environment.
6. In this case, the bacteria's mutation in their DNA provides them with the ability to resist the effects of antibiotics.
7. Antibiotic resistance allows the bacteria to survive and multiply even in the presence of drugs that would typically inhibit their growth or kill them.
8. The ability to resist antibiotics is advantageous for the bacteria, as it enhances their chances of survival in environments where antibiotics are present.
9. This research highlights the importance of understanding genetic adaptations in bacteria, as it helps in developing strategies to combat antibiotic resistance and improve medical treatments.
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Our body needs Oxygen and Glucose to ensure which process can take place in our body?
Question 5 options:
Homeostasis
Photosynthesis
Thermoregulation
Cellular Respiration
Answers
Help needed plz time limit
Answers
Answer:
C
B
A
D
Explanation:
14. The elements in group_
are the most reactive metals.
15. The elements in group_
are the most reactive nonmetals.
16. The elements in group_
are very unreactive.
17. The elements in group_
react very violently with water.
Answers
Answer:
14 Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.
15 The halogen group of elements is the most reactive of the nonmetals. It is also the most reactive group of all chemical elements. Fluorine is the most reactive element in this group. Halogens are highly reactive because they are all electronegative.
16 Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.
17 Group 1: Alkali Metals
Group 1 elements are called alkali metals because of their ability to displace H2(g) from water and create a basic solution. Alkali metals are also known to react violently and explosively with water.
what are the structural adaptation of whales and dolphins (compare them please)
Answers
Answer:
Whales and dolphins are mammals and have lungs instead of gills for breathing. They have blowholes at the tops of their heads that function like nostrils; they need to put their heads above water every so often to breathe. Both dolphins and whales have hair instead of scales, another quality that is specific to mammals. The animals have live births instead of laying eggs, and baby dolphins and whales nurse from their mothers. Whale and dolphin births take place near the surface of the water, so the young animals can easily take their first breath.
Both whales and dolphins rely on the sounds they make for survival, even though the sounds are utilized differently by each animal. For instance, whales make high-pitched groans and whistles to communicate with one another to warn against danger or navigate during migration
Answer:
COMPARISON AND CONTRAST OF WHALES AND DOLPHINS
Both dolphins and whales belong to the cetacean family and are marine animals that reside in the ocean. Some scientists even assert that dolphins are a type of whale, as the two animals have a number of shared characteristics. However, there are distinct differences between whales and dolphins as well that will teach you more about the physical appearance of these marine creatures and how they survive in their environment.
What happens to the pyruvate that enters the Krebs cycle?
Answers
Earth is tilted at a 23.5 degree angle. Explain how this causes the equator to be hot and the poles to be cold.
Answers
Answer:
sunlight
Explanation:
at the angle the earth is at, sunlight hits the equator almost directly, as well as the equator being closer to the sun.
Your lymphatic system plays a vital supporting role to both your cardiovascular and immune systems
True
False
Answers
Answer:
True
Explanation:
The lymphatic system is a network of vessels, tissues, and organs that work together to maintain fluid balance in the body, absorb and transport fats from the digestive system, and support the immune system by filtering out harmful pathogens and waste products. The lymphatic system works closely with the cardiovascular system to circulate lymph fluid and blood throughout the body, and it also plays a critical role in supporting the immune system's response to infection and disease.
Rasheeda made a model of a plant cell and labeled parts of the cell that are not found in animal cells. Which other part of the cell should Rasheeda label
Answers
Answer:
Cell wall, chloroplasts, plastids, and a central vacuole.
Explanation:
Rasheeda has to label cell wall, chloroplasts, plastids, and a central vacuole because these parts are not present in the animals cell. The outer boundary of animal cell is cell membrane whereas the outer boundary of plant cell is cell wall. The plant cell has chloroplast due to its function of making their own food with the help of sunlight so that's why it is not present in animal cell which can't make their own food. Plastid is also absent in animals cell and present in plant cell which is responsible for manufacturing and storing of food. Both plant cell and animal cell has vacuole but different in their size and location in the cell.
What genetic abnormality causes Down Syndrome? How does this usually happen?
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Plasma membranes are selectively permeable. This means
Answers
Plasma membranes are selectively permeable. This means.
the membrane allows some materials to freely enter or leave the cell#CarryOnLearning\( \mathfrak{WatanabeHaruto}\)
What is the typical configuration of chromosomes in eukaryotic cells?
Answers
Pooh had a colony of tiggers whose stripes went across the body. His American pen-pal, Yogi, sent him a tigger whose stripes ran lengthwise. When Pooh crossed it with one of his own animals, he obtained plaid tiggers. Interbreeding among the plaid tiggers produced litters of a majority of plaid members, but some crosswise- and lengthwise-striped animals were also produced. Diagram the crosses made Pooh, showing the genotypes of the tiggers which account for the coat patterns observed.
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In this case, the parental are lengthwise stripes (genotype ls/ls) and plaid stripes (genotype Ps/Ps), the F1 is plaid (100%) and F2 is plaid (75%) and lengthwise (25%). It is a Mendelian inheritance pattern.
Mendelian inheritance and complete dominanceComplete dominance occurs when the dominant allele (in this case, the plaid stripe trait) completely masks the recessive allele (lengthwise stripes) in heterozygous individuals.
The cross between tigers having lengthwise stripes (genotype ls/ls) and plaid stripes (genotype Ps/Ps) will produce an F1 100% having the plaid stripes (genotype Ps/ls) trait because this trait is dominant.
In the F2 obtained by crossing heterozygous plaid stripes individuals (genotype Ps/ls), the recessive trait 'lengthwise stripes' will be observed (again) in a proportion of 3:1.
In this case:
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In 3 minutes, a damselfly's wings beat 2700 times and a butterfly's beat 2100 times. About how many more times did the damselfly's wings beat in one minute than did the butterfly's?
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In 3 minutes, a damselfly's wings beat 2700 times and a butterfly's beat 2100 times. The damselfly's wings beat approximately 600 times more in one minute than the butterfly's.
In order to find the difference in the number of wing beats between the damselfly and the butterfly in one minute, we need to subtract the number of wing beats of the butterfly from that of the damselfly.
The damselfly beats its wings 2700 times in 3 minutes, which means it beats its wings approximately 900 times per minute (2700 divided by 3). On the other hand, the butterfly beats its wings 2100 times in 3 minutes, which means it beats its wings approximately 700 times per minute (2100 divided by 3).
By subtracting the butterfly's wing beats per minute from the damselfly's wing beats per minute, we get the difference: 900 minus 700 equals 200. Therefore, the damselfly's wings beat approximately 600 more times in one minute than the butterfly's.
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5. The basic process of gas exchange requires no structures at all and is
called _
A. gills
B. spiracles
C. diffusion
Answers
Fungus is an example of a
A. producer.
B. decomposer.
C. recycler.
Answers
Answer:
B
Explanation: