Answer:
cell
Explanation:
The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. Cells arise from other cells through cellular division.
Describe the sliding filament model of muscle contraction. What role do acetylcholine and acetylcholinesterase play in muscle contractions
Answer:
It Is me the Explanation Wizard (づ｡◕‿‿◕｡)づ
Explanation:
Hey (☞ﾟ∀ﾟ)☞ It's the Explanation Wizard here for your troubles I don't wanna waste time so here is my answer+explanation that I have personally wrote for you.The first question you asked here's the a+e The sliding filament model describes the process used by muscles to contract. It is a cycle of repetitive events that causes actin and myosin myofilaments to slide over each other, contracting the sarcomere and generating tension in the muscle. second a+e for second question When the nervous system signal reaches the neuromuscular junction a chemical message is released by the motor neuron. The chemical message, a neurotransmitter called acetylcholine, binds to receptors on the outside of the muscle fiber. That starts a chemical reaction within the muscle. Explanation Wizard out
Destructive interference can cause two waves to average each other out, resulting in flat water.
True
False
Answer:
True is the answer for your question. Mark me as the brainiest first please.
Explanation:
Answer:
True
Explanation:
I just took the test on marinebio edge2020
What bone marking found on the second cervical vertebra projects superiorly into the anterior portion of the vertebral foramen of the atlas
Answer:
Odontoid Process
Explanation:
The Axis has a protuberance (process or projection) called the odontoid process. Where it joins the main body of the vertebra, it has a slight constriction or neck. It has an oval or nearly circular facet on its anterior surface for articulation with the anterior arch of the atlas.
Answer:
odontoid process that articulate with concave facet
Explanation:
the concave facet on the anterior arch or C1 to form the atlantoaxial articulation
Weak carbonic acid naturally found in rainwater will cause _____________.
A. Slow chemical weathering
B. Rapid physical weathering
C. Slow physical weathering
D. Rapid chemical weathering
Answer:
slow chemical weathering
which information can be determined using half lives
Answer:
heart and lungs use the half of our lives
Explanation:
yan
A resultant force is?
Answer:
When two or more forces act on an object, the resultant force can be found by adding up the individual forces.
Determine which of the following statements is true about energy in ecosystems A. Consumers pass on 20% of the energy they get from a lower trophic level. OB. Primary consumers lose 60% of the energy they absorb from producers as urine and feces. C. 10% of the energy Primary consumers absorb is lost as heat. Ons Primary producers lose 20% of the energy they absorb as urine and feces.
Answer: C. 10% of the energy Primary consumers absorb is lost as heat.
Explanation:
According to the ten percent law of energy flow only 10 percent energy is transferred from one trophic level to the next trophic level and rest of the energy is used to develop the biomass and lost as heat. As the loss of heat is an essential exothermic reaction after the digestion and assimilation of food the energy is lost as heat from the body of the primary consumers is 10%. Primary consumers are animals that are dependent on plants for their food requirements for example deer, goat and others.
What is an Obligate anaerobe? How do obligate anaerobes, like the bacteria C. Botulinum, get energy ?
Answer:
See the answer below
Explanation:
Obligate anaerobes are microbes that can only survive in oxygen-deficient environments. They are killed by the normal atmospheric level of oxygen and will only thrive in environments whose oxygen levels are lower than that of normal atmospheric level.
Obligate bacteria such as Clostridium botulinum obtain their energy through anaerobic respiration processes such as fermentation and anaerobic respiration. During this process of fermentation, the lactic acid pathway is mostly used but other fermentation pathways such as propionic acid, mixed acid, acetogenesis, and methanogenesis pathways can be used.
All of the following are examples of geological features EXCEPT
ridges
valleys
bridges
waterfalls
Answer: The correct answer is bridges
Explanation: Confirmed correct
The branch of life sciences which involves the structure and function of the brain and nervous system, including neurons, nerves, and nervous tissue is called
Answer:
Neuroscience.
Explanation:
Neuroscience is the branch of life sciences which involves the scientific study of structure and function of the brain and nervous system, including neurons, nerves, and nervous tissue. People who study neurosciences is known as neuroscientist. Neuroscientists focus on the human's brain and its impact on the behavior and cognitive functions. Not only is neuroscience concerned with the normal functioning of the nervous system but also concern with neurological, psychiatric and neurodevelopmental disorders.
what is the stage of respiration that occurs in anaerobic conditions In less complex organisms ?
Explanation:
Glycolysis is the first pathway in cellular respiration. This pathway is anaerobic and takes place in the cytoplasm of the cell. This pathway breaks down 1 glucose molecule and produces 2 pyruvate molecules.
Answer:
Glycolysis
Explanation:
Glycolysis is the stage of respiration that occurs in anaerobic conditions In less complex organisms ?Glycolysis, which is the first step in all types of cellular respiration is anaerobic and does not require oxygen
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Even though the tubers are genetically identical why the plants that grow from them may not be the same height ?
please explain
Please answer correctly.
Answer:
I've grown potatoes on top of loose earth that's covered by a thick layer of loose straw. It allows the green leafy parts to easily push through to the sunlight above while keeping developing tubers protected from light. I've grown them this way because I really enjoy the taste of fresh new potatoes and have no desire to store mature potatoes for winter. I want to get the most baby potatoes possible while not damaging the plants with tiny potatoes not big enough to eat yet. It also keeps the potatoes cleaner than if grown under the soil.
When I start lifting the straw back to pick the largest new potatoes, I can see the development of the other potatoes. While the biggest potatoes are 1 1/2 to 2 inches in size, others range in size all the way down to 1/4 inch or less.
When a specific garden plant blooms, most of the flowers open within a very short time period. Now think of tomato plants. The flowers continue to open over a period of months and both ripe tomatoes, large and small green tomatoes as well as flowers can all be found on the same plant. Not all the fruit will be ripe before cold weather kills the plant.
Potatoes are closely related to tomatoes and like tomatoes, not all the tubers will be full size when the plant dies back. So I'd say it's neither genetics nor environmental factors but the inherent life and growth cycle of potatoes that account for the tuber size difference.
The difference in the tuber size in plants of potatoes and tomatoes does not depend upon its genetics or environmental factors rather it depends upon the inherent life and growth cycle of the plant.
What is the growth cycle in potatoes?Growth cycles are the recurrent fluctuations in the series of deviations from the usual trend of the plant growth. Thus, the growth cycle contractions in the plant include slowdowns as well as absolute declines in the activity, whereas business cycles contractions include only the absolute declines or recessions.
Potatoes are the plant species which are closely related to tomatoes and just like tomatoes, not all the tubers will be full size when the plant dies back in time. So, it is neither the genetics nor the environmental factors but the inherent life and growth cycle of the potato plants that account for the tuber size difference in the plants which are genetically identical to each other.
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Which growth model is a realistic representation of population growth?
A realistic representation of population growth is the _____ growth model.
Answer:
Logistic Growth Model
Explanation:
The logistic model is realistic because it suggests the fact that the population of species is regulated and controlled by the carrying capacity (maximum members that an ecosystem supports) of the ecosystem. The population becomes small when the carrying capacity decreases.
Why are groups of small cells better than one large cell at moving material in
and out?
A. They have a smaller volume.
B. They have more cell structures,
C. They have a greater surface-to-volume ratio.
O
D. They have a lower surface-to-volume ratio.
Answer:
C. They have a greater surface-to-volume ratio.
Explanation:
Because these smaller cells can access and pass through the membranes of the other cell membranes and permeable coverings easily and voluntarily unlike larger cells. It is also efficient for these smaller cells to penetrate and travel, delivering and transporting goods and materials such as nutrients, oxygen and waste throughout the body without consuming enough energy and conserving lesser space.
For simple reasons, they are faster, more efficient and consumes little space, and most especially depletes lesser energy. So, many small cells have more surface area than one large cell.
Commonly known as whooping cough, the medical term for this bacterial infection of the upper respiratory tract is
Answer:
its known as pertussis,caused by a bacteria called bordetella pertussis
The weirdest laws in the world gets brainliest. Look up the weirdest laws in the world and either post it in the comments or as an answer.
I don't want anything inappropriate or I will report you!
Answer:
Parliaments famous Salmon Act of 1986 states that it's illegal to hold salmon under suspicious circumstances.
What is the winter caused by?
A) indirect sunlight striking Earth
B) Earth's far distance from the sun
C) Earth's closeness to the sun
D) direct sunlight striking Earth
Answer:
A
Explanation:
The distance between the earth and the sun does not affect the seasons.its the tilting of the earth and the planets movement the sun.
I hope it helps
Answer:
Answer is A)
Explanation:
indirect sunlight striking earth
Why doesn't the level of oxygen in the atmosphere decreases'?
Answer:
Oxygen levels are decreasing globally due to fossil-fuel burning. The changesare too small to have an impact on human health, but are of interest to the study of climate change and carbon dioxide.
#CarryOnLearning
Answer:
The atmosphere is constant for many years does not decrease because the green plants which are capable of photosynthesis take up CO2 from the atmosphere and produce 0 2 in return
Although all neurons are different, they do have some characteristics in common. What are these characteristics
Answer:
A cell body, an axon, and dendrites.
Explanation:
The similar characteristics of different neurons is their body structure which have the common parts in all neurons. All neurons have three essential parts i.e. a cell body, an axon, and dendrites. Neurons different in size, shape, and structure due to different in their role and location but all these different neurons have the same components of its structure such as cell body, an axon, and dendrites.
An amoeba moves out a large particles by what process?
Answer:
Exocytosis is the process by which a large number of molecules are released
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Answer:
b: moon attraction to the sun
How does evolution explain both the unity and the diversity of all living things?
Answer:
Having a similar dna makeup as one animal but our features and genetic makeup different than that one animal.
Explanation:
There is unity in having the same dna as one animal but diversity in our features
During which process is mRNA converted into a sequence of amino acids for protein production?
transcription
translation
DNA replication
mRNA synthesis
Answer:translation
Explanation: Translation is the process by which nucleotide sequence of mRNA (messenger ribonuceic acid) is converted into the amino acid sequence
Answer:
B translation
Explanation:
because it is a process in which an mRNA molecule is used to assemble amino acids into polypeptide chains.
How is a virus different from a bacterium?
A. A virus causes illness, but a bacterium does not.
B. A bacterium is a living cell, but a virus is not.
C. A virus is a living cell, but a bacterium is not.
D. A bacterium causes illness, but a virus does not.
Answer:
option B
Explanation:
On a biological level, the main difference is that bacteria are free-living cells that can live inside or outside a body, while viruses are a non-living collection of molecules that need a host to survive.
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Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival
Answer:
biofilm
Explanation:
Answer:
isotonic
Explanation:
In hypotonic environments, the cells fill with water and bloat until they explode.
In hypertonic environments, the cells will lose their water and shrink.
In an isotonic environment, the cells would remain constant and thrive.
You are viewing an organ of the respiratory system and note the following tissues: folded mucosal layer containing simple cuboidal epithelium and smooth muscle, shifting into simple squamous epithelia. Identify the organ.
Answer:
Respiratory bronchiole
Explanation:
The respiratory bronchioles represent the narrowest airways within the lung, being continuations of terminal bronchioles that have approx. 0.5 mm in size. The epithelium of the respiratory bronchiole is composed of cuboidal ciliated cells and a small number of non-ciliated (secretory) Clara cells. The respiratory bronchioles lead into alveolar ducts composed of smooth muscle and connective tissue (i.e., elastin and collagen), connecting the respiratory bronchioles to the alveolar sacs.
The picture shows an organ system in the human body.
Kidney
A
Bladder
What is a function of the organ system shown?
What is the key purpose of conservation biology?
Answer:
Conservation biology as a discipline aims to provide answers to specific questions that can be applied to management decisions. The main goal is to establish workable methods for preserving species and their biological communities.
1) what are the roles of plants, animals and decomposers in an ecosystem ??
Explanation:
Decomposers and scavengers break down dead plants and animals. They also break down the waste (poop) of other organisms. Decomposers are very important for any ecosystem. If they weren't in the ecosystem, the plants would not get essential nutrients, and dead matter and waste would pile up.
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