Answer:
False
Explanation:
A cell membrane is not rigid a cell wall is rigid.
The proteins found in your hair and fingernails would be classified as what type of proteins?
Answer:
yes
Explanation:
creatine like horns of rhinos or finger nails
Answer:
Keratinocytes
Explanation:
Keratinocytes make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.
1. Briefly describe what is happening at each phase of
meiosis.
Answer:
Chromosomes condense. Metaphase II: Chromosomes line up at the metaphase plate. Anaphase II: Sister chromatids separate to opposite ends of the cell. Telophase II: Newly forming gametes are haploid, and each chromosome now has just one chromatid.
When does cell division occur once
In a chemical reaction, which aspect of the reactants changes?(1 point)
A. atoms
B. mass
C. nuclei
D. total mass
chemical reaction- The process by which atoms of one or more reactants are rearranged to form different products is called chemical reaction.
Reactants - reactants are the starting materials that undergo changes during a chemical reactionProducts- a product is a substance that is formed as the result of a chemical reaction.as example a figure is provided below.
so the answer is Atoms of the reactants which changes in a chemical reaction.
Which region is located between 60-90N and 60-90S?
Mid-Lats
Polar
Tropics
Tropical Rainforest
Answer:
The correct option is Polar
Explanation:
The polar region/arctic are located/extend from 66.5 degrees N (north) and also S (south) latitude to the north and south poles of the earth. From this, it can be deduced that the polar region is located between 60-90 degrees of N and 60-90 degrees of S. Polar regions are far from the equator as a result of this and are characterized by very low solar radiation.
Polar or artic region is located between the coordinates 60-90N and 60-90S. The polar regions are extremely far away from the equator, which is situated at 0-degrees latitude.
The correct answer is:
Option B. Polar
The polar region is defined as the region situated 60-degrees north or south of the equator. The solar radiation in the polar region ranges from only 18 hours and 5 hours during winters.
The middle latitudes are situated between 30N and 30S of the equator. It is characterized by moderate sunlight.
Tropics or tropical rainforests are situated near the equator and usually experience a warm climate.
Therefore, option B is correct.
To know more about the polar region, refer to the following link:
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Air is.....
A. Element
B. Composite
C. Homogeneous mixtures
D. Heterogeneous mixtures
Answer:
C- homogeneous mixture
Explanation:
its made up of multiple elements that aren't chemically combined.
you cannot see the parts of the mixture
remember that the action and reaction forces are equal in any collision if the action and reaction forces are equal then why do bumper cars that are of different masses react differently
Answer:
Newtons´s second law explain that F=MA, so, the heavier the car, the higher the impact force.
Explanation:
Answer:
no
Explanation:
What would happen to the concentrations of
Pyruvate, NADH and intermembrane H+ if the ETC
stopped working?
Answer:
Stay the Same, Increase, Decrease
Explanation:
Glycolysis produces pyruvate which is functioning normally if only the ETC (electron transport) stopped working because the ETC happens AFTER glycolysis, hence pyruvate is being produced and used at a normal rate (no change). NADH is produced in the cellular respiration stage PRIOR to the ETC so it is being created at a normal (or average) rate, however, it is not being used and split properly (meaning, not enough) in the ETC stage hence it's concentration increases. H+ decreases because it cannot be made if the prior step(s) were not complete.
What would happen to the concentrations of pyruvate, NADH and intermembrane H+ if the ETC stopped working are:
Pyruvate would stay the same and not be affected.that is it would remain the same.NADH would increaseH+ in the intermembrane would decrease.The concentration of the Pyruvate would not be affected If ETC stopped working and so this will make NADH would increase. Due to the fact that there is no electrons been transported down the chain, so therefore, no H+ would be moved and this in turn would make the concentration of H+ in the intermembrane space to reduce.Conclusively, we can therefore say that what would happen to the concentrations of pyruvate, NADH and intermembrane H+ if the ETC stopped working are:
Pyruvate would stay the same and not be affected.that is it would remain the same.NADH would increaseH+ in the intermembrane would decrease.Learn more from
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How do vaccinations work to provide immunity? and What body system regulates blood glucose levels? (For a Biology exam)
Thanks :)
Answer:
it trains the body immunity towards certain diseases
Explanation:
first of all we humans have two types of wbc cells phagocytes & lymphocytes. phagocytes produces pseudopodia which is like cytoplasm that traps or catches bacteria or viruses. lymphocytes produces chemical antibodies which destroy the viruses or bacteria by attaching to the virus and burst it out. Now when u get vaccinated u train those wbc cells for future viruses and hepl them to make antibodies to defend the body.
The blood glucose gets regulated by production of insulin in pancreas to maintain proper amount of glucose in the body
Help plz asappppppppp
Answer:
A. Whales evolved from four-legged animals.
Explanation:
I'm 100% on this one, because on Plato we were learning about evolution, and one of the slides said that whale had evolved from four legged animals.
Hope this helps ya!!!
Got a screenshot for proof!
I'll give you a Brainliest for correct answer
Answer:
Nondisjunction causes it
......
I have a huge test tomorrow and I need to know every thing about Cells, like the eukarotic cell, i need to know the cell membrane, and osmosis.
Answer:
look it up or ask your friends to look it upmaybe?
Explanation:
Answer:
Cell Definition“A cell is defined as the smallest, basic unit of life that is responsible for all of life’s processes.”
Cells are the structural, functional, and biological units of all living beings. A cell can replicate itself independently. Hence, they are known as the building blocks of life.
Each cell contains a fluid called the cytoplasm, which is enclosed by a membrane. Also present in the cytoplasm are several biomolecules like proteins, nucleic acids and lipids. Moreover, cellular structures called cell organelles are suspended in the cytoplasm.
Types of Cells.Prokaryotic CellsProkaryotic cells have no nucleus. Instead, some prokaryotes such as bacteria have a region within the cell where the genetic material is freely suspended. This region is called the nucleoid.
They all are single-celled microorganisms. Examples include archaea, bacteria, and cyanobacteria.
The cell size ranges from 0.1 to 0.5 µm in diameter.
the hereditary material can either be DNA or RNA.
Prokaryotes reproduce by binary fission, a form of sexual reproduction.
Eukaryotic CellsEukaryotic cells are characterised by a true nucleus.
The size of the cells ranges between 10–100 µm in diameter.
This broad category involves plants, fungi, protozoans, and animals.
The plasma membrane is responsible for monitoring the transport of nutrients and electrolytes in and out of the cells. It is also responsible for cell to cell communication.
They reproduce sexually as well as asexually.
There are some contrasting features between plant and animal cells. For eg., the plant cell contains chloroplast, central vacuoles, and other plastids, whereas the animal cells do not.
Functions of Cell:Provides Support and StructureFacilitate Growth MitosisAllows Transport of SubstancesEnergy ProductionAids in ReproductionCell Membrane The cell membrane supports and protects the cell. It controls the movement of substances in and out of the cells. It separates the cell from the external environment. The cell membrane is present in all the cells. The cell membrane is the outer covering of a cell within which all other organelles, such as the cytoplasm and nucleus, are enclosed. It is also referred to as the plasma membrane. By structure, it is a porous membrane (with pores) which permit the movement of selective substances in and out of the cell. Besides this, the cell membrane also protects the cellular component from damage and leakage. It forms the wall-like structure between two cells as well as between the cell and its surroundings. Plants are immobile, so their cell structures are well-adapted to protect them from external factors. The cell wall helps to reinforce this function.What is Osmosis?Osmosis is a passive process and happens without any expenditure of energy. It involves the movement of molecules from a region of higher concentration to lower concentration until the concentrations become equal on either side of the membrane.
Any solvent can undergo the process of osmosis including gases and supercritical liquids.
Osmotic Solutions There are three different types of solutions:An isotonic solution: is one that has the same concentration of solutes both inside and outside the cell.
A hypertonic solution: is one that has a higher solute concentration outside the cell than inside.
A hypotonic solution; is the one that has a higher solute concentration inside the cell than outside.
Effect of Osmosis on CellsOsmosis affects the cells differently. An animal cell will lyse when placed in a hypotonic solution compared to a plant cell. The plant cell has thick walls and requires more water. The cells will not burst when placed in a hypotonic solution. In fact, a hypotonic solution is ideal for a plant cell.
An animal cell survives only in an isotonic solution. In an isotonic solution, the plant cells are no longer turgid and the leaves of the plant droop.
The osmotic flow can be stopped or reversed, also called reverse osmosis, by exerting an external pressure to the sides of the solute. The minimum pressure required to stop the solvent transfer is called the osmotic pressure
Significance of Osmosis Osmosis influences the transport of nutrients and the release of metabolic waste products.It is responsible for the absorption of water from the soil and conducting it to the upper parts of the plant through the xylem. It stabilizes the internal environment of a living organism by maintaining the balance between water and intercellular fluid levels. It maintains the turgidity of cells. It is a process by which plants maintain their water content despite the constant water loss due to transpiration. This process controls the cell to cell diffusion of water. Osmosis induces cell turgor which regulates the movement of plants and plant parts. Osmosis also controls the dehiscence of fruits and sporangia. Higher osmotic pressure protects the plants against drought injury.help asap its either a c or d
Answer:
A) Simple Diffusion
Explanation:
Facilitated diffusion has a protein channel, while simple does not. If its not A, then its definitely D, no doubt
A pair of fruit flies reproduces and has 1000 offspring. All 1000 offspring have the alleles Gg. What is the most likely combination of alleles that each parent has, and why are other combinations not likely.
Answer:
The correct answer would be - GG and gg.
Explanation:
As it is given that all the 1000 offspring having the same allele Gg which is only possible in one condition that is cross between GG and gg because it is a heterozygous condition in the offspring. So there must be both allele present and it can not be heterozygous parents as there would be a different combinations of offspring in that case.
If the parents either GG only all the offspring would be GG the same with gg than all the offspring will be gg, thus the correct answer would be GG and gg.
I need help on those two questions
Which term applies to muscle cell
A) prokaryotic
B) eukaryotic
C) unicellular organisms
D) stem cell
Stem cell term applies to muscle cells.
What are the functions of stem cells?Stem cells are the cells that develop into blood, brain, bones, and all of the body's organs. They have the potential to repair, restore, replace, and regenerate cells, and could possibly be used to treat many medical conditions and diseases.
While they can regenerate themselves in an animal or person they are generally very difficult to grow and to expand in the laboratory. Because of this, it is difficult to obtain sufficient numbers of many adult stem cell types for study and clinical use.
Stem cells originate from two main sources: adult body tissues and embryos. Scientists are also working on ways to develop stem cells from other cells, using genetic “reprogramming” techniques.
Learn more about stem cells:
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Which of the four prokaryotes listed below is the most efficient?
A. facultative aerobes
B. obligate anaerobes
C. aerotolerant organisms
D. obligate aerobes
Answer:
B
Explanation:
Predict how a lack of resources (food, water, shelter) would influence population size. Do you think the lack of availability would increase or decrease the size of a population? Why?
Answer:
a lack of resources would most likely decrease a population size because it will limit growth and decrease survival rates. There will also be more competition.
Explanation:
Please don't plagiarize. Thanks :)
what force pulls down the top of a wave
Answer:
wind whips it up and gravity pulls it down.
Explanation:
A student is comparing two solutions. Solution A has a pH of 4 and solution B has a pH of 10. Which best describes the solutions?
Solution B is more acidic than solution A.
Solution A is more acidic than solution B.
Solution B has more hydrogen ions than solution A.
Solution A has more hydroxide ions than solution B.
Answer:
Solution A is more acidic than Solution B
Explanation:
Answer:
The answer is B
Explanation:
I took the test and got it right :)
We must breath in__ so our cells can gain more___
Answer:
oxygen ,energy
Explanation:
what process produces sex cells (sperm and egg)?
Cellular Respiration
Osmosis
Meiosis
Mitosis
what is a substance that increases the hydrogen ion concentration in a solution.
Answer:
Explanation:
Acid. is a substance that increases the hydrogen ion concentration in a solution.(hight H+ concentrations) ~When hydrochloric acid is added to water, hydrogen ions dissociate from chloride ions: HCl -> H+ + Cl− ~Addition of an acid makes a solution more acidic.
Chromosomes create genes true or false
Answer:
false
Explanation:
genes are made up from dna and are created from viruses or inherited from our parents
Hope this helped! Have a good day!
Where are the protons located?
O nucleus
O electron cloud
Answer: The nucleus.
Explanation: In an atom, there are two main parts, the nucleus and the electron cloud/electron shells. The protons and neutrons are located in the nucleus, and the electrons are located in the electron shells/cloud/whatever.
Nucleotides are to ___
as ____
are to proteins.
O nucleic acids; amino acids
O amino acids; polypeptides
O genes; enzymes
O polymers; polypeptides
Answer:
Your answer is A). Nucleotides make up nucleic acids like DNA and RNA, and a protein is a chain of amino acids.
Nucleotides are to nucleic acids as amino acids are to proteins.
In the given fill-in-the-blanks, we are required to determine and identify which parts correspond with the given words.
Nucleotides are a "nucleoside and a phosphate" combination constituting the monomeric unit of nucleic acids. They have numerous metabolic roles and are also essential for DNA replication and RNA transcription. Amino acids are the building blocks of proteins and are an important component of our bodies. As given above, we can now ascertain that nucleotides and nucleic acids are related while amino acids are to proteins.With the requirement to join the corresponding 'elements' with each other, we can understand and identify the words and the blanks by determining the constituent of each element. And by doing that, we can safely say that nucleotides make up nucleic acids like amino acids are for proteins. Thus, the correct answer is the first option.
Learn more about nucleotides here:
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PLS HELP ANSWER I WILL DO THE BEG
Answer:
its bbbbbbbbbbb
Explanation:
What is the function of a protein?
Explanation:
Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place, and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.
Hope this helps!! :)
Condensation reactions are also referred to as dehydration synthesis. Explain how dehydration synthesis is descriptive of the process.
Respiration is the process in which organisms break down food to release ____.
a.
energy
c.
sugar
b.
nutrients
d.
oxygen
Answer: a. energy!!!
Explanation:
It's me again!! Hope this helped!! :D
Answer:
Sugar
Explanation:
I am not completely sure but correct me if I am wrong. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
Hope it helps!!!!