Answer:
As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.
Answer:
Sliding of the filaments and shortening
Explanation:
As the thin filaments slide inward, structures called Z-discs come toward each other and the sarcomere shortens but the lengths of thick and thin filaments do not change. The sliding of the filaments and shortening of the sarcomere cause shortening of the whole muscle fiber and ultimately the entire muscle.
PLS MARK BRAINLIEST
Which of the following living things would occupy the highest trophic level?
A.
A stalk of wheat that grows in a field
B.
A chicken that eats grain
C.
A fox that eats a chicken
D.
A lynx that eats a fox
Answer:
D. A lynx that eats a fox
Explanation:
Which one is the odd man out?
leaf of a plant
horse muscle
blood
sugar
Answer:
LEAF OF A PLANT .
Explanation:
Among the given options, The odd one out is sugar. Sugar is a type of carbohydrate that is used for energy.
Leaf of a plant: A leaf is a green organ of a plant that is responsible for photosynthesis.
Horse muscle: Muscle is a type of tissue that is responsible for movement.
Blood: Blood is a fluid that circulates through the body and carries nutrients, oxygen, and waste products.
Sugar: Sugar is a type of carbohydrate that is used for energy.
Sugar is the only one of these four that is not a living organism. The other three are all living organisms: the leaf of a plant, a horse muscle, and blood.
Here is a more detailed explanation of why sugar is the odd one out:
Leaf of a plant: A leaf is a living organism because it is made up of cells that are able to carry out the basic functions of life, such as respiration, photosynthesis, and growth.Horse muscle: A horse muscle is a living organism because it is made up of cells that are able to carry out the basic functions of life, such as respiration, contraction, and growth.Blood: Blood is a living organism because it is made up of cells, such as red blood cells and white blood cells, that are able to carry out the basic functions of life, such as respiration, transport, and immunity.Sugar: Sugar is not a living organism because it is a molecule that is made up of carbon, hydrogen, and oxygen atoms. It does not have the ability to carry out the basic functions of life, such as respiration, growth, and reproduction.To learn more about blood, here
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The heart is within the
Answer:
the pericardial cavity
4. Which is an example of a chemical change?
A
Rust forming
C.
Candy bar melting
B.
Water boiling
D.
Pencil breaking
Answer:
A.
Explanation:
A. Rust forming
is a example of a chemical change
Hope this helped you!!
Answer:
RUST FORMING
Explanation:
because it takes the chemical h2o to form rust
why don't all cells have a tail
Answer:
Explanation:
As microscopes improved, biologists discovered that all kinds of cells have beating tails. They are found not only on free-living “animalcules” and sperm, but also on the cells inside multicellular organisms.
In a certain ecosystem, eagles
prey on fish. If the number of
eagles in the ecosystem increases,
the carrying capacity
A. of the fish population will go up
B. of the fish population will go down
C. of the eagle population will go down
D. will be unaffected
If the number of eagles in the ecosystem increases,the carrying capacity of the fish population will go down.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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Where is curriculum?
Which of these microbes has the most complex cell wall?
What is meant by homeostasis?
Answer:
the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.
Explanation:
Identify organelles in a plant cell.
The organelles in the plant cell that are shown in the image are: A: Chloroplast, B: Vacuole, C: Cell wall and D: Endoplasmic reticulum.
A: Chloroplast - This organelle is responsible for photosynthesis, the process by which plants convert sunlight into energy and produce glucose. Chloroplasts contain chlorophyll, a pigment that captures light energy.
B: Vacuole - The vacuole is a membrane-bound sac filled with fluid, primarily containing water and various dissolved substances. It plays a role in storing nutrients, waste products, and maintaining turgor pressure in plant cells.
C: Cell Wall - The cell wall is a rigid outer layer found in plant cells, bacteria, fungi, and some protists. It provides structural support and protection for the cell, helping maintain its shape and integrity.
D: Endoplasmic Reticulum (ER) - This organelle is involved in the synthesis, folding, modification, and transport of proteins and lipids. It can be rough (with ribosomes on its surface) or smooth (lacking ribosomes). The rough ER is involved in protein synthesis and modification.
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Identify the organism from Kingdom Protista.
Answer:
Organisms in the Protista kingdom include amoebae, red algae, dinoflagellates, diatoms, euglena, and slime molds.
Explanation:
What ocean resource may be harvested by vaccuming or trawling
1:fish
3:minerals
4:fuels
Serious answers only or I will report 15 points btw
what is the uses of tentacle in hydra
Answer:
Tentacles of the Hydra are the extension of the body layer that encircles the opening of the mouth, the construction of Hydra is a simple body column and highly extensible tentacles, Hydra uses these tentacles for capturing or hunting the prey.
There are proteins that use energy to move molecules in/out of the cell? What are these proteins called?
lipid proteins
protein channels
carrier proteins
protein pumps
Answer:
The answer is carrier proteins
is this correct, please help me
Answer:
yes
Explanation:
you got it
I need help!!!!!!!!!
Answer:
bullet one
Explanation:
in a ribosomal protein
need an answer, please need an answer, please.
no copy on góogle
Answer:
hii there
i have worked on this but i have two answers so choosing is on you
Explanation:
Essay 1 )
In many people's opinions mans impact on the environment is a big issue in our life which is easily neglected, as humans are responsible for a staggering amount of damage on the earth. Nature manages its own components.
Since the outbreak of technology and industrialisation humans have greatly had a negative impact on the environment, such as; air pollution, habitat destruction, water pollution, the burning of rainforests and land pollution. In this essay I intend to give facts and discuss the effects and causes on these topics and discuss the solutions being carried out to improve the conditions.
Air pollution effects people in areas of emission sources, such as, power plants, local industry and major roads. Humans contribute to pollution by the use of machinery in industry causing pollution to the environment. More effects of air pollution on the environment involve using diesel fuel for vehicles and coal for power along with the lack of emission controls for vehicles and industry.
Another cause of air pollution is the greenhouse gas CO2, this gas warms the earth through living things as they emit CO2 when breathing which contributes to humans also, as we add to this statistic through breathing also. CO2 is usually thought to be involved with cars, aeroplanes and power plants, in the past 150 years , CO2 has been polluting our atmosphere through the sources mentioned, this is the highest CO2 emissions recorded for a long time. More causes of air pollution is methane gas which comes from swamps which are contributed to man through flooding. Cfc's are another major cause of air pollution by man through the use of fridges and deodorants (aerosols) which harms the earth's ozone layer.
Essay 2 )
In order to meet the basic needs of increases population, the present society has under taken a series of steps like rapid industrialization, unplanned urbanisation, deforestation, overexploitation of natural sources, etc.The outcomes of the above human activities have contributed significantly to the degradation of environment around us.
Some important impacts of human activities on environment are outlined below:
1. Deforestation:
In order to provide timber and farm land to increased population, large number of forest trees are cut and forest area is converting to farm lands. The rate of deforestation is so faster that around 1.5 million hectare of forest cover is lost every year is India alone. The process of deforestation results in decreasing rainfall, increasing global temperature, loss of top soil, modification of climatic conditions etc.
2. Industrialization:
Although the industrial activities of man provide basic need of the society, simultaneously the same release a lot of pollutants to the environment. The pollutants in environment cause loss of raw materials, health hazards, increase in death rate, damage to crop, making environment unfit for living organisms etc.
3. Loss of ecological balance:
The excessive use, misuse and mis-management of biosphere resources results in disturbance in ecosystem or ecological imbalance.
4. Air pollution:
The anthropogenic release of various air pollutants to the environment causes a number of dreaded phenomena like green house effect, ozone layer depletion, acid rain and smog formation etc.
5. Water pollution:
Human activities in respect of disposal of sewage wastes, solid wastes, municipal wastes, agricultural and industrial wastes cause the environment unfit for day to day use. Besides, polluted water spreads or leads to different diseases.
6. Increased consumption of natural resources:
Since the starting of industrial era, the natural resources are constantly utilised for the production of one or more products for the day to day use of society.
7. Production of waste:
Rapid industrialization and unplanned urbanization release a lot of toxic waste material either in solid or liquid or gaseous state which induces a number of serious environmental hazards.
8. Extinction of Wildlife:
Since forests are natural habitats of wild life (both plants and animals) deforestation leads to the extinction of valuable wild life and loss of biodiversity.
9. Habitual destruction:
The commercial and industrial activities associated with mining, construction of dams, fishing, agriculture etc. cause habitat destruction which is a pathway to pollution.
10. Noise pollution:
The man-made noise due to mechanized automobile, industries, trains, aero planes, social functions etc. causes noise pollution which has impact on both biotic and a biotic components of environment.
These are the human impacts on environment
hope it helps
have a nice day : )
Please help and give the right answer. Which statement describes the process of cellular respiration.
A) It takes place only in animal cells and involves chemical reactions with oxygen and releases stored energy.
B) It takes place in plant cells and involves chemical reactions with carbon dioxide, water, and energy from the sun to produce sugars.
C) It takes place in plant and animal cells and involves chemical reactions with oxygen to release stored energy.
D) It takes place in plant and animal cells and involves the division of cells.
Answer:
C
Explanation:
Cellular reparation tales place in both plant and animal cells, and it has to do with energy, using elimination all but C is crossed out.
Glucose+O2---(energy released)--> CO2+water
Hope it is correct
The process of cellular respiration takes place in plant and animal cells and
involves chemical reactions with oxygen to release stored energy.
Cellular respiration involves metabolic reactions which takes place in plant
and animal cells and converts chemical energy into energy in the form of
ATP and then releases waste products.
Cellular respiration usually takes place in the mitochondria as it is regarded
as the power house of the cell.
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Maths is a difficult subject. (Make exclamatory.)
Answer:
so true
Explanation:
i wish it was easier
In photosynthesis, what are the two major reactions that take place
There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.
2. A wave in which the disturbance is perpendicular to the direction the wave
travels is called a longitudinal wave.
True or False
Answer:
False
Explanation:
Which of the following would cause a plant to grow taller?
Answer:
Make plants grow taller by ensuring that their basic needs are being met. This includes water, sunlight, warmth and nutrients. Research the needs of your particular plant and provide these elements in the necessary amounts for optimum growth.
Predict the appearance of an igneous rock that formed as magma
cooled quickly and then more slowly.
Answer:
It would have smaller crystal sizes at first- closer to the surface
and larger crystals in the middle/core
Explanation:
smaller crystals are formed at faster cooling rates
larger crystals are formed at slower cooling rates
Match each scientist with the correct contribution.
1. invented the telescope
Edwin Hubble
2. discovered four of Jupiter's moons
Ptolemy
3. used math to discover Neptune
Robert Goddard
4. proposed heliocentric theory
Galileo
5. proposed geocentric theory
Johan Galle
6. designed liquid propulsion systems
Hans Lippershey
7. developed the red shift method
Nicolaus Copernicus
Answer:
i matched them for you-hope you pass
Explanation:
1-hans lippershey; 2- Galileo Galilei; 3- Johann Gottfried Galle; 4- Nicolaus Copernicus; 5-Ptolemy; 6-robert goddard; 7-hubble
Answer:
See attachment below, Hope it helps!
What a types of organisms do lactic acid fermentation? Summarize this process
Answer: In lactic acid fermentation, pyruvate from glycolysis changes to lactic acid. This type of fermentation is carried out by the bacteria in yogurt, and by your own muscle cells. In alcoholic fermentation, pyruvate changes to alcohol and carbon dioxide. This type of fermentation is carried out by yeasts and some bacteria.
Explanation: Found on Flexbooks.
Lactic acid fermenting bacteria is Lactobacillus, though other bacteria and even yeast are sometimes used.
Lactic acid fermentation is a metabolic process by which glucose or other six-carbon sugars are converted into cellular energy and the metabolite lactate, which is lactic acid in solution.What is lactic acid?Lactic acid is mainly produced in muscle cells and red blood cells.It forms when the body breaks down carbohydrates to use for energy when oxygen levels are low. When body's oxygen level might drop include: During intense exercise lactic acid is formed.What is fermentation?Fermentation is a chemical process by which carbohydrates, such as starch and glucose, are broken down anaerobically. Fermentation has many health benefits and is used in the production of alcoholic beverages, bread, yogurt, sauerkraut, apple cider vinegar and kombucha.
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Question 1: Some cells produce and secrete high levels of digestive proteins. Which organelles would you expect to be abundant in those cells, and why? Question 2: Explain how active transport helps a nerve cell maintain its resting potential. Question 3: The Atlantic cod is a common fish of the Atlantic Ocean that must drink seawater to meet its water needs. Explain how active transport helps the Atlantic cod maintain homeostasis with regard to the balance of sodium and chlorine ions, which are abundant in seawater. ( Will Mark Brainliest). No Nonsense Answers.
Answer:
q1 : ribosomes because they are responsible for protein synthesis
q2 : by transporting potassium ions into the cell and sodium ions out of the cell maintaining a concentration gradient
q3 : seawater contains a high concentration of sodium and chlorine ions that the Atlantic cod gets rid of by actively transporting them out of its body
20 Points!
Question:
Study the illustration. The small blue spheres represent water molecules.
In which direction will water molecules move across the membrane?
Water will move from A to B.
Water will move from B to A.
There will be no net movement of water.
Given the illustration shown in the image attached to this answer, water molecules will move from B to A.
Osmosis is defined as the movement of water molecules across a semi - permeable membrane from a region of higher concentration to a region of lower concentration. Osmosis usually occurs across the cell membrane.
The cell membrane is an example of a semi - permeable membrane. Hence, water moves from B where it is at a higher concentration to A where it is at a lower concentration according to the definition of osmosis.
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YA'LL ARE SMART!! PLEASE HELP!!!
Answer:
I believe your answer would be Accelerating/speeding up
Explanation:
If the bus was moving at a constant speed, the line would be flat
if the bus was slowing down, the line would decrease
if it was not moving, there would be no line
write down 5 ways in which animals make adaptations to dry climate conditions
Answer:
AnimalsHave large surface area to increase loss of heat by radiation, which allows the animal to keep cool. Have reduced body fat. Body fat acts as an insulating layer preventing loss of heat from the body. PlantsHave spikes instead of leaves.
Does Windex have a higher or lower concentration of hydrogen ions compared to water