Answer:
What tells a muscle when to contract?
Explanation:
(1) A message travels from the nervous system to the muscular system, triggering chemical reactions.
(2) The chemical reactions lead to the muscle fibers reorganizing themselves in a way that shortens the muscle--that’s the contraction.
(3) When the nervous system signal is no longer present, the chemical process reverses, and the muscle fibers rearrange again and the muscle relaxes.
Answer:
The nervous system generates a signal, which triggers a muscle to contract
Explanation:
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1. There are 60 chromosomes in a goat's somatic cell. Answer the following:
a) How many haploid chromosomes and diploid chromosomes are in a goat's cell? .........
b) The number of chromatids per chromosome for mitosis (list how many are in prophase, metaphase, anaphase, and telophase separately), for meiosis I (prophase I through telophase I), and meiosis II (prophase II through telophase II).
c) Total number of chromosomes and chromatids per cell in G1, end of S phase, and G2. And the total number of chromosomes and chromatids per cell in mitosis ( list the total for prophase, metaphase, anaphase, telophase, cytokinesis separately), of meiosis I (prophase I through cytokinesis), and meiosis II (prophase II through cytokinesis)
Answer:
c po
Explanation:
thats my ansewr po ty
A cell from which organism would most likely be smallest?
Answer:
A
Explanation:
a bacteria would be the smallest thing in that list resulting in the smallest cell
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5. Predicting: Suppose you went on a run on a hot day in August. You did not drink a lot of water
beforehand. How would this affect your urine formation
Kill most of the hawks using the button and then click play observe the graph for about 12 months and then click phase what happen
Who knows biology at the college level?
Answer:
I only know birds at a college level. Still studying. BY MYSELF
Explanation:
explain the adaptations of the kidney nephrons to their duty(give three at least)
It has a selective permeable Bowman's capsule that only allows food substances and food products to pass through but prevents the passage of plasma proteins and blood cells. ... The kidney tubules are highly vascularised to ensure constant removal of reabsorbed substances hence creating more room for further reabsorption.
Select all the molecules that are produced in photosynthesis and then used in cellular respiration
ATP
Water
Oxygen
Glucose
Carbon Dioxide
Answer:
carbon dioxide
Explanation:
cells use carbon dioxide and energy from the sun to make sugar molecules and oxygen
What factors create deep ocean currents
Answer:
Deep currents are driven by temperature and water density/salinity. Of course, deep currents impact surface currents, which carry warm water to the poles. Surface currents are also driven by global wind systems fueled by energy from the sun. Factors like wind direction and the Coriolis effect play a role.
Explanation:
please HELP i’ll give brainlist and 100 points
1.name the reactants in the equation
2. name the products in the equation
3. state whether this reaction is endothermic and explain how you are able to recognize this
4. state whether this reaction is anabolic or catabolic and explain how you are able to recognize this
According to the image,
1. The reactants of photosynthesis is carbon dioxide, water, and solar energy.
2. The products of photosynthesis is glucose and oxygen
3. The photosynthesis reaction is endothermic. For a reaction to be endothermic, energy (in this case, solar energy) must be put into the system in order for the reaction to occur. Whereas, exothermic reactions are spontaneous and don't require an initial input of energy.
4. Photosynthesis is an anabolic pathway. Carbon dioxide and water are utilized to synthesize glucose. Whereas, the process of glycolysis is catabolic because you break down glucose into 2 molecules of pyruvate.
An organism’s scientific name consists of which TWO taxonomic groups? (Select the TWO correct answers).
Class
Domain
Genus
Species
Kingdom
Phylum
Order
Family
Answer:
Scientists use a two-name system called a Binomial Naming System. Scientists name animals and plants using the system that describes the genus and species of the organism. The first word is the genus and the second is the species
An organism’s scientific name consists of which two taxonomic groups, genus, and species. The correct options are c and d.
What are taxonomic groups?Taxonomic groups are the groups that contain different groups in which the organism are divided. These are arranged from higher to lower groups. The highest group is the kingdom.
Kingdoms are divides of the different organisms of the earth. Taxonomy is organizing different organisms in a line so, that it will be easy for their studying.
The two taxonomic groups that come in last are genus and species. Genus and species make the scientific name of the organism. The genus contains animals that are most similar to each other. Species are similar organisms, that can breed with each other.
Therefore, the correct options are c, Genus, and d, Species.
To learn more about taxonomic groups, refer to the link:
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Organisms that live near or on the ocean floor are called
Answer:
Benthos
Explanation:
Animals that live on the sea floor are called benthos. Most of these animals lack a backbone and are called invertebrates. Typical benthic invertebrates include sea anemones, sponges, corals, sea stars, sea urchins, worms, bivalves, crabs, and many more.
Answer:
Organisms that live near or on the ocean floor are called benthos.
hope this helps <3
Explain a standard curve and mention what is its use
A standard curve is a tool that allows us to estimate the DNA concentration of unknown samples by comparing them to standards with known DNA concentrations.
Which of the following best describes the function of messenger RNA mRNA
Answer:
Messenger RNA (mRNA) carries the genetic information copied from DNA in the form of a series of three-base code “words,” each of which specifies a particular amino acid. 2. Transfer RNA (tRNA) is the key to deciphering the code words in mRNA.
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2. A scientist is investigating the chemical properties of a hydrogen atom (H), which has an
electroegativtiy of 2.1, and a chlorine atom (CI), which has an electronegativity of 3.0.
Suppose these two atoms form a chemical bond resulting in the compound HCI.
Predict whether the compound is held together by an ionic, a polar covalent,
a nonpolar covalent, or a hydrogen bond.
Explain your prediction.
Describe the bond in terms of its electrical charge. (PLEASE HELP I NEED IT BY 11:59 50 POINTS)
A Nonpolar Covalent, Because A nonpolar covalent bond is a covalent bond in which the bonding electrons are shared equally between the two atoms. ... A nonpolar covalent bond is one in which the distribution of electron density between the two atoms is equal.
Explanation:
I Think :DDD
What is the amplitude?
1) The distance between the two crests
2) The highest point in the wave
3) The lowest point in the wave
4) the distance from the center of the wave to the crest or the trough.
Answer:
4) the distance from the center of the wave to the crest or the trough.
Explanation:
As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCI), and the small intestine has a pH ranging from 7 to 9. HCI converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine.
A. it becomes inactive
B. It begins to replicate
C. Its shape changes to engulf large pepsin
D. Its activity increases to digest more proteins
Answer:
the answer should be D on edge i am a little rusty but hope this helps.
Explanation:
How quickly can mitosis occur in a paramecium?
Answer:
Under favourable conditions, Paramecium multiplies rapidly up to three times a day. Binary fission divides a cell transversely and followed by mitotic division in the micronucleus. Macronucleus divides amitotically. The gullet also divides into two halves
Explanation:
HOPE IT HELP
Paramecium can be multiplied rapidly up to three times a day.
In paramecium binary fission divides a cell transversely in two parts .Then after it followed by mitotic division in the micronucleus if paramecium.However Macronucleus divides amitotically in life.which selective is a characteristic of both living and non living thing? metabolism, cells, energy, or subatomic particles?
Answer:
The same atoms and subatomic particles can be found in both.
What role does concentration gradient play in movement across a cell membrane
in active transport?
Transport across a cell membrane is a tightly regulated process, because cell function is highly dependent on maintain strict concentrations of various molecules. When a molecule moves down its concentration gradient is it participating in passive transport; moving up the concentration gradient requires energy making it active transport.
Which statement describes Newton's first law of motion?
A. Objects only change motion when a nonzero net force acts on them.
B. Increasing the distance between objects decreases the gravitational force between them.
C. An object's acceleration is determined by the net force acting on it divided by the object's mass,
D. When one object pushes another, the second object pushes back with an equal force in the opposite direction
Answer:
I think it is D that's would sound the best
different between prokaryotic and eukaryotic cells
Answer:
eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
hope this helps <3
The main difference between prokaryotic and eukaryotic cells is that prokaryotic cells do not have a nucleus while eukaryotic cells do have a nucleus.
Hope this helps you! :)
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HELP WILL GET BRAINIEST PLEASE
How does meiosis differ from mitosis?
1. It reduces the amount of DNA.
2. It decreases the number of cells.
3. It increases the number of cells.
4. It increases the amount of DNA.
Answer:Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.
Explanation:
What is a DEPENDENT variable? A. the group under normal conditions that is not experimental B. the variable that is changed and being tested C. the variable being recorded or observed D. the observation made that began the experiment
Answer: something that can not be alone it relies on the independable varieble
Explanation:
its depends on the conditions you put it through you HAVE to have an independable varable in order for their to be a dependant variable. so A i was leaning toward B tho
why does moss appear orange on trees
Answer:
Explanation:
https://napavalleyregister.com/lifestyles/home-and-garden/columnists/bill-pramuk/hanging-moss-in-an-orange-tree/article_b5b3bc9a-4afd-5bc3-a433-929b46284895.html use this link for this question cause it is an articsl on this
Answer:
These are known as "lichens," and they grow on tress that are declining in health. It grows in wet, sunny areas, and are rarely found on healthy trees.
James Bond is kidnapped and placed on the floor of a moving
train. He can see only the night sky through the windows.
Using the Big Dipper, he locates Polaris. Over the course of
the night he notices the altitude of Polaris is decreasing.
What direction is he being taken?
Answer:
Down
Explanation:
Altitude refers to how high above the ground you are. If this decreases, you are going down
A clean suit should be worn at the crime scene on Willow Lane by CSI personnel to _____.
identify the CSI personnel from other first responders
identify the CSI personnel from other first responders
protect against an unwanted transfer of evidence
protect against an unwanted transfer of evidence
keep their clothes from being spoiled by bodily fluids
keep their clothes from being spoiled by bodily fluids
maintain personal safety around unhealthy contaminates
Answer:
identify the CSI personnel from other first responders
Explanation:
Have you ever wondered how we can grow from one cell to millions? How do you think this happens?
Answer:
If you think about it, the fact that a single cell can grow into an adult with trillions of cells is pretty awesome. ... It's a process called the cell cycle. Entire organisms grow, and develop by going through the cell cycle again and again. The cell cycle also helps us maintain a healthy body.
From a single cell to multiple cellular organism is formed by different complex mechanism like by cell division which involves a central dogma of life includes three process such as replication, transcription and translation and fourth one is reverse transcription.
what is central dogma ?The ‘Central Dogma’ is the flow of transfer of genetic information, from DNA to RNA to make a functional product, a protein, was first proposed in 1958 by Francis Crick.
DNA contains the genetic information needed to make proteins, and RNA act as a messenger that carries this information to the ribosomes where the information is translated into protein.
The process by which the DNA information converted into protein called gene expression which can occur in two stages like transcription and translation.
The central dogma occurs most frequently in our cells in three stages such as DNA replication that refers to make new DNA from pre existing DNA, transcription to make RNA from DNA and translation from RNA to protein.
Reverse transcription is defined as the transfer of information from RNA to make new DNA in a reverse manner which occur mainly in retroviruses, such as HIV.
Learn more about central dogma, here:
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Plz help I need help
Answer:
provide support and structure to the cell
Answer:
option c
Explanation: PLS MARK BRAINLIEST
what two componets make up the environment
Answer:
Environment consists of all living and non-living things which surround us. Therefore, the basic components of the environment are: 1. Atmosphere or the air 2. Hydrosphere or the water 3. Lithosphere or the rocks and soil 4. The living component of the environment or the biosphere II.
Explanation:
Answer:
The 'two main components' of the environment are the 'biotic factors' and the 'abiotic factors'. The biotic factors are the forms of life that occupies the environment whereas the abiotic features are the various factors that are present in the environment.