Answer:
They were not repeated and verified
Explanation:
I think it’s this because if they would have rep
In general, evolution is ____ a
process of change.
A. Fast
B. Nonexistent
C. Slow
Answer:
In general it is C. Slow
Kevin is constructing an explanation of the importance of freshwater ecosystems. Which of these statements would be MOST USEFUL to include in the explanation?
What does the Cell Wall do?
The control center of the cell where DNA is located
These give the Endoplasmic reticulum a "rough" look, they are responsible for making proteins.
Gives the cell structure and support. Only found in plant cells.
The powerhouse of the cell. Provides energy in the form of ATP.
Answer:
the cell wall is a protective layer that keeps things in or out.
nucleus
true
true
mitochondria
Explanation:
True or false, Water contains half as many hydrogen atoms as oxygen atoms.
Answer:true
Water is made up of 2 atoms of hydrogens and 1 atom of oxygen to form a molecule. Water contains half as many hydrogen atoms as oxygen atoms. Water is a polar molecule which means it has slightly charged ends. ... This means it bonds to like molecules and ionic molecules.
Explanation:
Stoichiometry must be multiplied by the number that is printed on the element's foot in order to determine how many atoms of a certain element there are in a given molecule. Therefore, the given statement is false.
What is atom?The smallest component of any element, molecule, or compound is called an atom. Atoms have a central nucleus and electrons that move in a set orbit around it.
In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. Overall, only the proton—not the neutron—is responsible for the nucleus' charge.
Two hydrogen atoms and one oxygen atom combine to produce the molecule of water. Hydrogen atoms make up 50% of the oxygen atoms in water.
Therefore, the given statement is false.
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9) List these biomes in order from the greatest to least diversity (temperate
deciduous forest, tropical rain forest, temperate rain forest).
Tropical rainforest, temperate deciduous forest, temperate rainforest
I'm not too sure if the temperate forest is more diverse than the rainforest, so sorry if I'm wrong. Tropical rainforests are the most diverse because of the humidity, which is water. The water helps the soil stay healthy, which makes more plants, which makes more animals and insects.
I hope this helps! Good luck!
The biomes in order from the greatest to least diversity will be tropical rainforest, temperate deciduous forest, and temperate rainforest.
Tropical rainforests refer to the rainforests that occur in areas that have no dry season.
The temperate deciduous forest refers to a biome that always changes. It has seasons such as winter, spring, summer, and fall.
Temperate rainforest refers to the broadleaf or coniferous forests that receive heavy rain. This condition supports ferns, shrubs, etc.
It should be noted that the biome with the greatest diversity is tropical rainforest while the least is the temperate rainforest.
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what is science? why is science useful?
Answer:
Science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards. Finding a cure for cancer and a clean form of energy are just two topical examples. Education could become the most important application of science in the next decades.
Answer:
science is the study of earth and nature. science is useful because science is valued by society because the application of scientific knowledge helps to satisfy many basic human needs and improve living standards.
In meiosis a diploid cell divides twice yielding four haploid daughter cells. In meiosis I
what separates?
a) Old and new chromosomes
b) Sister chromatids
c) Parent and daughter DNA
Homologous chromosomes
D)homologous chromosomes
Answer:
D
Explanation:
let me know if thats right
In meiosis I, HOMO-LOGOUS CHROMOSOMES separate (Option D).
Meiosis is a type of reductional cell division by which a parent cell produces four daughter cells, which contain half of the genetic material.
Meiosis has two successive rounds of cell divisions: Meiosis I and Meiosis II.
In Meiosis I, homo-logous chromosomes line up at the equator of the parent cell (Metaphase I) and then segregate to different daughter cells (Anaphase I).
In conclusion, in meiosis I, HOMO-LOGOUS CHROMOSOMES separate (Option D).
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Students studying the workings of the kidneys completed an investigation. The students prepared four model cells by using dialysis tubing containing the same solution of blue dye and water. Each of the model cells originally had a mass of 10 grams. The students then placed each model cell in a beaker containing different concentrations of dye in water. After 24 hours, they recorded the mass of the model cells. Their data appears in the table.
Concentration of Water % Mass of Model Cell (g)
100 12
90 11
80 10
70 9
What is the most likely reason that the model cell placed in 100% water increased in mass?
Water reacted with chemicals in the model cell.
All of the water of the model cell evaporated.
Only half of the water entered the model cell.
Water diffused from the beaker into the model cell.
Answer:
Water reacted with chemicals in the model cell.
Explanation:
hope it helps
How many moles are in 15 grams of Lithium?
2.16 grams
104.1 moles
2.16 moles
104.1 grams
PLEASE ANSWER QUESTION ON PICTURE!!!! BRAINLIEST FOR CORRECT ANSWER!!!!
What picture? I dont see any
Answer:
the picture???
Explanation:
:)
Which of the following statements tells how facilitated diffusion differs from
simple diffusion?
A. Particles move through cell membranes without the use of energy by cells.
B. Particles tend to move from high concentration to lower concentration.
C. Particles move within channel proteins that pass through cell membranes.
D. Particles tend to move more slowly than they would be expected to move.
Answer:
I think its C but I am not sure, I hope this helps :)
Explanation:
The statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
Diffusion (both facilitated diffusion and simple diffusion) refers to the movement of substances across biological membranes from an area of high concentration to an area of low concentration.
Facilitated diffusion and simple diffusion are two types of passive transport that do not require energy to move molecules/ions in favor of a concentration gradient.
In facilitated diffusion, specific membrane proteins known as carriers or channels help to the movement of substances in favor of a concentration gradient.
Conversely, in simple diffusion, small molecules (e.g. CO2 and oxygen) freely diffuse across a selectively permeable membrane in favor of a concentration gradient.
In conclusion, the statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
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Study the map of major bodies of water in the United
States
Major Lakes of the US
What does the map indicate about fresh water in the
United States?
O The Southeast gets fresh water mainly from the
Mississippi River.
The Pacific Northwest is far from any access to a
fresh water supply.
The North has a large supply of fresh water, due to
access to the Great Lakes.
O The Northeast does not have access to much fresh
water, due to the lack of a major river system.
wiece
Answer:
The answer is c) The North has a large supply of fresh water, due to access to the Great Lakes.
Explanation:
Hope this helps! And I got the answer off Edg 2020 so It might only work on there.
Answer:
c
Explanation:
Evidence that a meteor passed through to the surface of a moon or planet would be
A) a fiery streak in the sky
B.) impact crater
C.) meteorite pieces found on planet's surface
D.) both b and c
Answer:
D
Explanation:
How do animals transport materials?
Answer:
Thought the process of discussion and ossmossis as due to gaseous exchange
Explanation:
With the aid of thin layers and large surface area animal are able to transport material thought the blood due to diffusion and osmosis In order to transport different materials from a every of high concentration to a low concentration until material is equally distributed throughout the body
The illustrations are models of cells and cell organelles.
Which model shows a prokaryotic cell?
a. I
b. II
c. III
d. IV
Answer:
b. ll
Explanation:
I took the quiz and got it right.
Image II shows a model image of a prokaryotic cell.
What is a cell?
A cell is a basic unit of life. There are two kinds of cells prokaryotic cells and eukaryotic cells.
Cells organize to form a tissue. Image II is of a prokaryotic cell. It is flagella.
Many prokaryotes have locomotory structures called flagella (plural: flagellum). A majority of protozoa and some bacteria move around. As opposed to motile bacteria, which solely use flagella to move, protozoa use cilia, pseudopods, and flagella to move.
Therefore, Image II shows a model image of a prokaryotic cell.
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pyruvic acid enters the ____ and is first converted into _____.
a. krebs cycle; citric acid
b. krebs cycle; acetyl CoA
c. mitochondria; citric acid
d. mitochondria; acetyl CoA
Answer :
D. Mitochondria ; acetyl CoA
pyruvic acid enters the mitochondria and is first converted into acetyl CoA
Investigating how temperature affects decay
Answer:
How does temperature affect decay?
Temperature. amount of water. Bacteria and fungi secrete enzymes onto food to digest it into soluble substances which they absorb. They respire using oxygen and release heat energy which increases the rate of decay.
Explanation:
Hope this helps, If it did, then I would really appreciate it if you gave me Brainliest, I only need one more to rank up and it has taken forever to get to where I am currently. Thanks.
Which of the following human activities releases greenhouse gases and contributes to climate change?
Answer:Carbon Dioxide is released by the burningof fossil fuels, solid waste, and wood. This is the number one human activity that contributes to climate change
Explanation:
What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
What shape is the sugar in a nucleotide?
Answer:
In double-stranded DNA, the molecular double-helix shape is formed by two linear sugar-phosphate backbones that run opposite each other and twist together in a helical shape. The sugar-phosphate backbone is negatively charged and hydrophilic, which allows the DNA backbone to form bonds with water.
Describe the following types of cell signaling:
Autocrine:
Juxtacrine:
Endocrine:
Paracrine:
Answer:
Autocrine:Autocrine signaling means the production and secretion of an extracellular mediator by a cell followed by the binding of that mediator to receptors on the same cell to initiate signal transduction. A well-characterized form of autocrine signaling is the secretion of IL-1 by macrophages.
Juxtacrine:In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell–cell or cell–extracellular matrix signalling in multicellular organisms that requires close contact. ... A membrane ligand (protein, oligosaccharide, lipid) and a membrane protein of two adjacent cells interact.
Endocrine:The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
Paracrine:Paracrine signaling is a form of cell signaling or cell-to-cell communication in which a cell produces a signal to induce changes in nearby cells, altering the behaviour of those cells. ... However, the exact distance that paracrine factors can travel is not certain.
Explanation:
Hope this helps you
Crown me as brainliest:)
HELPP ASAP PLEASE I NEED ANSWERS GIVE A LOT OF POINTS (answer all plzzzz) 11-15
Answer:
11.) red aka b
12.)orange aka a
13.)yellow aka c
14.) orange aka b
15.) last one aka c
Explanation:
11.) F=ma---> 75=0.445(a)--->a=168.5m/s^2
12.)F=ma---> 5,100=m(3)---->m=1,700kg
13.)F=ma---> 3.63=18.15(a)--->a=0.2m/s^2
14.)F=ma---->F=(2,030,000)(15)----->F=30,450,000n
15.) Doubling the mass doubles the acceleration
sex linked traits are typically carried on the x chromosome. to denote the geontypes, a superscript is used. a female carrier of hemophillia will have the genotype xH Xh . using the letters X AND Y , what is the genotype for each of the following people?
Answer: XHY, XHXh
Explanation: I don't know if this is correct exactly but i just looked at my notes from my bio class because we did this previously so i think it's right
What is the difference between glucose and ATP?
Glucose is a storable form of energy, while ATP is a usable form of energy.
ATP is a storable form of energy, while glucose is a usable form of energy.
ATP is only a usable form of energy, but glucose can be used and stored.
Glucose is only a storable form of energy, but ATP can be used and stored.
The main difference between glucose and ATP is that Glucose is a storable form of energy, while ATP is a usable form of energy.
Glucose is storable form of energy because it can't be used as energy until it can be broken down by mitochondria of the cell while on the other hand, ATP is the usable form of energy which we can get from the break down of glucose molecules. Our cells use ATP as a fuel to do various activities of the cell so we can conclude that in glucose, energy is present in stored form whereas ATP is used as energy in various activities.
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What organisms carry out metabolism?
Answer:
Eukaryotes
Explanation:
Are organisms wise cells have a nucleus and membrane bound organelles. Prokaryotes are organisms whose cells lack a nucleus. Eukaryotes carry out cellular respiration with the help of mitochondria. Mitochondria are organelles that produce the enzymes necessary to catalyze the series of reactions that produce ATP.
Why are individual chromosomes more difficult to see during interphase than during mitosis
As an electron approaches a proton, what happens to the electric force of attraction between them? (1 point) Group of answer choices Remains the same Increases Decreases It ceases to exist
Answer: increase
Explanation: cause ik
Answer: It increases
Explanation: As an electron goes near a proton, the force of attraction would increase. Electron is negatively charged while the proton is positively charged so they would naturally attract each other.
Hope this was helpful
main parts of the male reproductive organ and their functions.....
Answer:
penis
Explanation:
sex
Please help me I’ll give what ever it’s called
Answer:
organ to organ system
Explanation:
Cellular respiration and photosynthesis form the basis of the __________.
Group of answer choices
A) water cycle
B) biomass
C) nitrogen cycle
D) carbon cycle