Answer:
The A band stays the same width and, at full contraction, the thin filaments overlap. ... The I band contains only thin filaments and also shortens. The A band does not shorten—it remains the same length—but A bands of different sarcomeres move closer together during contraction, eventually disappearing.
how is the information contained in a signaling molecule received by a cell?
Answer: Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm.
Explanation: I found this answer on quizlet
Answer:
How is the information contained in a signaling molecule received by a cell? Depending on the nature of the signaling molecule, it may either bind to and activate a receptor protein embedded in the plasma membrane, or it may move across the plasma membrane and bind to a receptor protein in the cytoplasm
Explanation:
Why are flood plain soils particularly fertile
Answer:
Due to the deposition of silt.
Explanation:
The Floodplain is a generally flat area of land next to a river or stream. When the river floods, water containing sediments and particles from the upper course and middle course of the river gets washed onto the Floodplain. The nutrients front these sediments and the water is absorbed into the soil for it's enrichment and fertilisation.
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What is Photosynthesis?
Answer:
the process where plants use sunlight to synthesize foods from carbon dioxide and water to get their energy.
Which statement best summarizes the function of DNA?
-An RNA sequence hooks up with a particular DNA sequence.
-DNA consists of genes that give instructions for making proteins.
-O A single DNA molecule splits into two DNA molecules .
-Covalent bonds join smaller molecules into proteins.
Answer:
-DNA consists of genes that give instructions for making proteins.
summarize the effects of mutations on organisms?
Answer: Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is a cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Explanation: Hope this helped!
Help fast pls
Which statement describes the process of osmosis in an animal cell?
A)
Sugar molecules move across the plasma membrane until the cell has
enough energy to
grow in size and dividel
B)
Water molecules move across the plasma membrane until solute
concentrations are equal
on both sides of the membrane.
C)
Tons move across the plasma membrane until the inside of the cell has a
higher
concentration of positive charges.
D
Enzymes move across the plasma membrane until the cell has completed
metabolism
Answer:
hi b is the correct one<3 have a good day
Explanation:
Water molecules moving across the plasma membrane until solute concentrations are equal on both sides of the membrane best describes the process of osmosis in an animal cell .
Osmosis is the process in which molecules move from a region of higher concentration to that of a lower concentration across a semi-permeable membrane.
Osmosis provides a balance between the elements in which organisms are exposed to. A very high concentration may cause cells to shrink and die hence the reason to maintain a balance for optimal functions and survival.
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Write 2-3 complete sentences to describe the government in United States
Answer:
The United States government is a constitutional, federal republic composed of three branches: legislative, executive, and judicial. Each branch has its limitations of powers and responsibilities to ensure that citizens have their rights protected and that the government is successfully working.
Explanation:
when reading a book, the ciliary muscle will __________, the suspensory ligament will __________, and the lens will become more __________.
Create a hypothesis: Ben wonders if sugar water will help his vine plant grow taller than it would with regular water. He would like to do an experiment. Create an appropriate hypothesis Ben can test using an experiment. *your hypothesis can be anything as long as it is in the correct format and related to the experiment!
Answer:
Sometimes I wish I was a little baby again, because bruised knees heal faster than broken hearts
what are the scientific importances of studying anatomical features of angiosperns
Answer: All angiosperms are comprised of stamens which are the reproductive structures of the flowers. They produce the pollen grains that carry the hereditary information. The carpels enclose developing seeds that may turn into a fruit. The production of the endosperm is one of the greatest advantages of angiosperms.
Explanation:
Where are the tube like structures that connect fungi cells?
Answer:
What are Hyphae
Explanation:
Hyphae are long tubular structures resembling garden hoses. ... Hyphae perform a variety of functions in fungi. They contain the cytoplasm or cell sap, including the nuclei containing genetic material. Hyphae absorb nutrients from the environment and transport them to other parts of the thallus (fungus body).
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Miss Hawaii
which body system is responsible for producing the hormone adrenaline?
Answer:
In the centre (medulla)
Explanation:
Of the adrenal glands and in some neurons of the central nervous system.
how do scientist test thier hypothesis
Answer:
By experimenting on the hypothesis using step by step scientific methods.
Gathering the data, analyzing the data, drawing conclusions and if the hypothesis isn't conclusive a new hypothesis will be formulated to check out the problem.
What are some threats to soil ?
Answer:
we need to focus on the 10 main threats to soil functions: soil erosion, soil organic carbon loss, nutrient imbalance, soil acidification, soil contamination, waterlogging, soil compaction, soil sealing, salinization and loss of soil biodiversity.
Explanation:
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What phases are A, B, C D, and E? I’ll mark brainliest if you’re right!
Answer:
A: Anaphase
B: Anaphase II
C: Prophase I
D: Metaphase I
E: Metaphase II
Explanation:
Can you help me with this? :(
Answer:
yellow and red offspring will be produced
the external energy source for producers is ________ and the final energy-rich product produced in the mitochondria of consumers is ________.
Answer: the external energy source for producers is The sun and the final energy-rich product produced in the mitochondria of consumers is adenosine triphosphate (ATP).
The first one is: The sun
The second one is: adenosine triphosphate (ATP).
Explanation: I hope that's what you're looking for. Have a nice day studying.
The Allegheny mountain region of Virginia was formed between 250 and 280 million years ago. What event most
Likely caused the formation of the Allegheny Mountains?
-))
A)
The collision of two continental plates causing uplift
B)
The deposition of sedimentary rock over the Allegheny region
C)
Continental drift separating two plates to move apart slowly
D)
Geologic uplift of magma forming igneous rock that converted to
mountainous regions
Answer:
A the collision of two continental plates causing uplift or D the uplift of magma forming igneous rock that converted to mountainous regions
Explanation:
Answer:
A
Explanation:
The collision of two continetial plates causing uplift.
How can detritivores be beneficial to the environment?
O A) allow predation to occur
O B) rid waste and dead matter
O C) provide food for autotrophs
O D) facilitate photosynthesis in plants
Answer:
B
Explanation:
How can detritivores be beneficial to the environment?
O A) allow predation to occur
O B) rid waste and dead matter
O C) provide food for autotrophs
O D) facilitate photosynthesis in plants
ANSWER:O A) allow predation to occur
O A) allow predation to occurO B) rid waste and dead matter
O C) provide food for autotrophs.
O D) facilitate photosynthesis in plants
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Which is NOT considered an organism?
fungi
virus
bacteria
German Sheppard
Answer:
Virus.
Explanation:
Living things are organisms
Fungi is a plant which is a living thing
bacteria is an organism
and a German Shepherd is a animal which is a living thing
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what is carbon used for in each sphere?
Answer:
Carbon is found in the hydrosphere dissolved in ocean water and lakes. Carbon is used by many organisms to produce shells.
Explanation:
6. Identify the type of climate data that has the longest data range. 1. microscopic organism 2. data sediment core 3. data tree ring 4. data ice core data
Complementing data, taken from different sources such as tree rings, sediments, and ice, provides significant information about global climatic changes. However, ice core data has the longest data range. (4) is correct.
-------------------------------
Ice core data refers to the information obtained from a sample of ice taken from a glacier or a mountain.
Information kept in the ice is mostly about gases concentration at different moments though time.
Analysis of retained gases in Antarctic ice, through perforations of over 2000 meters deep, has allowed knowing the CO₂ atmospheric concentrations and other gases involved in the greenhouse effect for at least 150,000 years.
These concentrations have varied in the temporal scale of glaciation, showing low concentrations during glacial periods with low temperature and relatively high concentrations during interglacial periods with high temperature.
Between these two periods, abrupt variations in temperature and gas concentration are detected, meaning that changes in CO₂ cause changes in temperature.
The increase in CO₂ is a highly significant component in global climatic change and possibly the best documented.
This information is the best paleoclimatic documents.
Complementing it with marine sediments core and data tree rings makes it possible to know about the principal traits of terrestrial weather in the lasts 420,000 years, practically four glacial-interglacial cycles.
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Explain why the shape of an enzyme is important to its function.
Answer:
The shape of an enzyme is very important because it has a direct effect on how it catalyzes a reaction.
Each enzyme is folded into a shape that allows the substrate(s) to fit into the active site, which is where the reaction occours. Other substrates do not fit into this active site. This is why each enzyme can only catalyse a specific reaction
Answer:
hey
how is the weather that side
What determines cell differentiation once gene regulation has taken place?
A.
proteins
B.
adenosine triphosphates
C.
mitochondria
D.
fluids
pls helppp
Answer:
A. Proteins
[Hope this helped, good luck!]
how can different amino acids affect secondary structure
Answer:
Exposure to positively charged amino acids (arginine and lysine) is found to clearly stabilize the secondary structure. Kinetically, each amino acid promotes folding by generating a large increase in the folding rate with little change in the unfolding rate.
What is the biggest bird in the world?
Answer:
the biggest bird in the world is the Common ostrich
Explanation:
Brainliest ?
hybrid zones provide an opportunity to investigate _____.
Answer:
Hybrid zones are geographical areas where two interbreeding groups of genetically unique organisms meet. Hybrid zones provide an opportunity to investigate Reproductive isolation and Speciation.
Explanation:
How do enzymes use strain to catalyze reactions?
Answer:
Bond strain: enzymes can destabilize bonds within the substrate. Proximity and orientation: conformational changes in the enzyme upon substrate binding can bring reactive groups closer together or orient them so they can react.
Explanation:
Lesson 3.01 (Page 1) talks about the different kids of ecosystem
succession.
If primary succession occurred would turtles be able to nest there?
What about secondary succession? (hint: what is the difference
between the 2?)
Answer:
In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.
Explanation:
Hope this helps
Changes in a population over time is due to what
Answer:
Due to different circumstances.
like marriage which creates increase in population