Answer:
The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system (CNS).
Explanation:
Answer:
The PNS consists of the nerves and ganglia outside the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain and spinal cord and the rest of the body.
Explanation:
How can we change the speed of a toy car on a racetrack to describe the car’s motion?
Answer:
get one of those blowers and blow it on the wheels to make the wheels spin very fast
Explanation:
Answer:
tilt the track the most 30 degress
Explanation:
2
Which process can occur in BOTH mitosis and meiosis
A)
fertilization
B)
independent assortment
gene mutation
D
crossing over
Answer: Gene Mutation
Explanation:
describe an experiment to show that chlorophyll is needed for photosynthesis
Answer:
keep a plant in a vacuum sealed bag to stop air from coming in and that will stop the production of chlorophyll since oxygen is needed to make it.
Explanation:
pls only legit answers im gonna fail this class
While gutting a fish, Nathan encountered an air-filled sac-like structure. What is the purpose of this structure in fish?
A.
It enables fish to breathe in water.
B.
It serves as a reserve space to store fat.
C.
It harbors bacteria that benefit the fish.
D.
It provides buoyancy to the fish.
Which of the following makes up the bottom layer of a soil profile?
organic material
Obedrock
O minerals and organic material
O inorganic materials
Answer:
inorganic materials
Explanation:
Answer:
Bedrock
Explanation:
your welcome
Which continents did the Challenger explore in the late 1800's?
Answer:
Challenger first traveled south from England to the South Atlantic, and then around the Cape of Good Hope at the southern tip of Africa. It then headed across the wide and very rough seas of the southern Indian Ocean, crossing the Antarctic Circle, and then to Australia and New Zealand.
Explanation:
Hope this helped, Have a Wonderful day!!
HELP PLS AND THANK YOU IM GETTING TIMED BRAINLIEST!!!
Awnser: When water freezes, thaws, and breaks up rocks.
Cells in every part of an earthworm's body need oxygen. Which TWO statements explain how an earthworm's organ systems help provide its cells with oxygen?
A. The nervous system removes oxygen from the body
B the circulatory system carries oxygen to different parts of the body.
C the respite system brings oxygen into the body
D the digestive system delivers oxygen to the blood.
The circulatory system carries oxygen to different parts of the body, and the respiratory system brings oxygen into the body are the two statements which explain how an earthworm's organ systems help provide its cells with oxygen. Therefore, the correct option is B and C.
What are organ systems?The term organ system refers to the group of organs that work together to perform one or more functions of the body.
Earthworms have a closed circulatory system, which means that blood flows within vessels. The circulatory system carries oxygen from the respiratory surface (the skin) to different parts of the body, where it can be used by the cells for respiration.
Earthworms breathe through their skin, which is kept moist by mucus. Oxygen diffuses across the moist skin and into the circulatory system, where it is carried to the cells.
Both A and D are incorrect because both of these systems are not involved in carrying or delivering oxygen to or from the blood. Therefore, the correct option is B and C.
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How many strands do DNA molecules have
Answer:
Two strands
Explanation:
So each DNA molecule is made up of two strands, and there are four nucleotides present in DNA: A, C, T, and G. And each of the nucleotides on one side of the strand pairs with a specific nucleotide on the other side of the strand, and this makes up the double helix. I hope this helps.
Recognises that division of labour found in
multicellular organism for efficient functioning.
Answer:
Are there answers for it?Multiple choice? Spelling check?
Explanation:
In vesicular transport, __________ transport materials into and out of the cell using _______.
Endocytosis and exocytosis transport materials into and out of the cell using vesicles.
Endocytosis is called the process by which cells incorporate into them molecules, large or small, which are covered by the formation of a vesicle that detaches into the cell, forming phagocytic vesicles.In exocytosis, the proteins or molecules produced in the endoplasmic reticulum are wrapped in a vesicle towards the Golgi apparatus, where they are released to be used by other cells or by the body in different processes.Therefore, we can conclude that exocytosis and endocytosis are the biological processes responsible for the transport of particles and substances into and out of the cell.
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Answer:
Vesicles, Energy
Explanation:
Explain how an imbalanced ecosystem be beneficial
Answer:
Ecological balance is a term used to describe the equilibrium between living organisms such as human being, plants, and animals as well as their environment. ... Therefore, this balance is very important because it ensures survival, existence and stability of the environment
Explanation:
If one species is lost the entire ecosystem can stop working. ... If something happens in an ecosystem, it can shift from a state of balance to a state of imbalance. Ecological imbalance is when a natural or human-caused disturbance disrupts the natural balance of an ecosystem.
Which microscope is often used to view metal surfaces?
scanning electron microscope
scanning tunneling microscope
transmission electron microscope
compound light microscope
Answer:
scanning tunneling microscope
Explanation:
Microscopes used to view metal surfaces.
True or false Angiosperms are flowering plants will mark brainlest
Answer:
True, angiosperms are plants that have flowers and produce seeds within a fruiting body or carpel. Example: The humble tomato plant starts off with bright yellow or orange flowers that (after pollination) will swell into a plump, red fruit, chock-full of seeds waiting to be planted.
What do the three nucleotide bases on an mRNA molecule (called a codon) provide a code for?
six amino acids
two amino acids
three amino acids
one amino acid
Answer:
c. three amino acids
Explanation:
i know this from my exam in fifth grade. your welcome ;)
An mRNA is made up of the 4 nitrogenous bases A,U,C and G where the thymine is replaced by U for uracil. An mRNA molecule is made up by a codon of three amino acids.
What is amino acid ?An amino acid is made up by the acidic as well as basic group where the acidic group is carboxylic acid and the basic group is amine group.
A codon is made up by the three amino acids where the three of the amino acids together called as codon makes up a nucleotide together and the molecule it codes for makes a long chain of proteins together making up the structure of the desired machinery as per signals and the mechanisms that are assigned to it.
A codon makes up the together the amino acid and then the chain and together it makes up the protein where the long polypeptide makes up the structure that is tertiary in nature.
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when you cut an onion, what happens to your eyes? what role do you think the onions' central vacuoles have in your reaction?
Answer:
They start to water because of the acid.
hydrophilic vs hydrophobic parts of lipid bilayer & why the location of each makes sense NEED HELP ASAP!!!!
Answer:
In a lipid bilayer, the hydrophilic part is the head, and the hydrophobic is the tail. This location makes sense because the plasma membrane has a barrier that has a selective permeability so it selects what goes in and what goes out of the lipid bilayer.
HELP PLEASE! Why might a scientist repeat experiment if she did not make a mistake in the first one
A) scientist therapy experiment to make the most money
B)it helps ensure the results are consistent and repeatable
C) repeating ensures the expect the results match the hypothesis
D) helps fine portions I can be skipped with the same results
Answer:
i believe its B but i might be mistaken.
Explanation:
There are four mechanisms that can cause changes in the frequencies of genes in populations: mutation, migration, genetic drift, and natural selection. All four are mechanisms of evolutionary change. What is genetic drift? A) In a population, it is the changes in allelic frequencies of a gene that are due to chance. B) A random error/change in the DNA sequence. These may be inherited or occur in cells during the lifetime of the organism. C) Also known as gene flow. It is any movement of individuals and/or the genetic material they carry, from one population to another. D) There is variation in any population; differential reproduction occurs and over time a more
Answer:
There is variation in any population; differential reproduction occurs and over time a more
Explanation:
3: How is the transfer of bacteria into and out of one person and then into another person similar to or different from how you spread bacteria into and out of one Petri dish and then into another dish?
Answer:
Bacteria can replicate approximately every 20 minutes by binary fission, which is a simple form of cell division. This level of replication will depend on the availability of nutrients and other suitable conditions, such as temperature.
Are enzymes reactants? Explain your answer.
why leaves are falling when they are matured?
Answer:
bcs in plant there's two types of tissue one is meristematic tissue and another is permanent tissue which are basically dead tissues so when meristematic tissue get matured they are converted into permanent one n leaves becomes dead
What is the polymer for a nucleotide?
Answer:
DNA which is a nucleic acid
Explanation:
DNA is a polymer. The monomer units of DNA are nucleotides, and the polymer is known as a "polynucleotide." Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.
Answer:
DNA
nucleotide consist of a base, a phosphate and a pentose sugar, a strand of dna just compromises of a bunch of these together
For substances to enter or leave a cell, molecules must pass through
the nucleus.
the Golgi apparatus.
the ribosomes.
the cell membrane.
Answer:
The cell membrane/plasma membrane.
Answer:
cell membrane
Explanation:
Which of the following questions can be answered scientifically?
a
Should we just let the river flow where it wants?
b
What can be done to stop erosion?
c
Is erosion control worth the financial costs?
d
Can planting cover crops reduce erosion?
Answer:
d
Explanation:
1. Animal cells have all of the following except:
Answer:
chloroplasts And Cell Wall
Explanation:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Answer:
I assume this is your question since I have seen this before.
Animal cells have all of the following except ________.
A. mitochondria
B. chloroplasts
C. a nucleus
D. Golgi apparatus
Answer: B
Explanation:
There are no choices to answer your following question, Please edit your question with a picture of answer choices or type it out properly next time. That will be greatly appreciated.
In terms of producers, why is cellular respiration needed in
addition to photosynthesis?
How are photosynthesis and cellular respiration similar
(Hint: look at the inputs/reactants and outputs/products)?
How are photosynthesis and cellular respiration different
(Hint: look at the inputs/reactants and outputs/products)?
What is the phospholipid bilayer composed of?
Answer:
Hydrophobic (water-hating interior) Hydrophilic (water-loving exterior)Explanation:
The hydrophilic (polar) head group and hydrophobic tails (fatty acid chains) are depicted in the single phospholipid molecule
A cell membrane is a rigid structure that can prevent a cell from bursting due to increased internal water pressure.
True
False
Answer:
False
Explanation:
A cell membrane is not rigid a cell wall is rigid.
Where does an organism get the required reactants for cellular
respiration?