Guys pls help me!
Students investigate how onion cells react to salt (NaCl) solutions of different concentrations. They observe onion cells in three salt solutions under a microscope
The image of an onion cell in a 3% salt solution is shown.
Onion Cell in 3% Salt Solution
Answers
Answer:
I'm not sure but maybe for the first it's less than 3% and for the second it's equal to 3%?
Explanation:
Related Questions
An animal dies in mud, decomposes, and leaves an imprint, which is later filled by sediment to form a solid copy of
the original organism.
How is this fossil different from fossils of preserved remains?
3
Only hard tissue is preserved.
O Hard and soft tissues are preserved.
O Only soft tissue is preserved.
O There is little change to the preserved organism.
Answers
Answer/Explanation:
Only the soft tissue is preserved. Normally the hard tissues are preserved(bones). But since the bones decomposed and was later filled with sediment, only the soft tissue was actually left by the animal.
Answer:
only hard tissue is preserved
Explanation:
took the test
If Jamal does not sleep for four days straight, he will most likely experience __(blank)__. a) jet lag
b) psychopathic behavior
c) hallucinations
d) REM
Answers
Answer:
b? ig I mean u could experiance all, but this is an 8th grader talking what do i know?
Explanation:
Which state of matter is the least compressible? (1 point)
Solid
Liquid
Gas
Plasma
Answers
Answer:
solid matter is the least compressible.
1. The measure of amount of salts dissolved in water is ____
Answers
Answer: Salinity i think
Explanation:
Reyna pushed a box with 58 N of force, causing it to accelerate 5.1 m/s2. What is the
mass (in kg) of the box?
Answers
Answer:
m = 11.37 kg
Explanation:
F = m*a --> m = F/a = 58/5.1 = 11.37 kg
The_________ of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties. The______ of water molecules to each other helps transport water from the roots to the leaves in plants. When water warms or cools, either break or form. Thus, water absorbs or releases a great deal of_______ , helping to moderate temperatures. Because_______ is less dense than liquid water, it floats and protects lakes and oceans from freezing solid. Water is a versatile . Blood and other biological fluids are aqueous solutions with a diversity of dissolved .
Answers
Answer:
The correct words that film in the blanks are;
Polarity
Cohesion
Hydrogen bonds
Heat
Ice
Solvent
Solutes
Explanation:
Water is a highly polar molecule. Its polarity allows it to form strong intermolecular hydrogen bonds which accounts for the forces of cohesion in the water.
The hydrogen bonds form and break with evolution of heat hence accounting for the role of water in temperature regulation.
Ice is less dense than water due to spaces in the solid. Water is regarded as a universal solvent for polar solutes. Blood and other aqueous body clouds usually contains many dissolved solutes.
what are NADH and FADH ? why are they important
Answers
Answer:
NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain. FADH2: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.
Explanation:
Answer: Here you go!
NADH: NADH is the abbreviation for the naturally occurring biological substance, nicotinamide adenine dinucleotide hydride. ... Often referred to as coenzyme 1, NADH is the body's top-ranked coenzyme, a facilitator of numerous biological reactions.
FADH: Flavin adenine dinucleotide, or FADH2, is a redox cofactor that is created during the Krebs cycle and utilized during the last part of respiration, the electron transport chain. Nicotinamide adenine dinucleotide, or NADH, is a similar compound used more actively in the electron transport chain as well.
WHY ARE THEY IMPORTANT??
ATP production is an important part of cellular respiration (the process of generating energy from food) and both NADH and FADH2 that are involved in this process help in making more ATP. ... NADH and FADH2 that act as electron carriers give away their electrons to the electron transport chain.
Scientists theorize that oil and natural gas formed from the remains of microscopic manne organisms called
A) mussels
B) seashells
C) plankton
D) fossil fuels
Answers
People born remains of those organisms to form fossil fuels for energy.
Answer: It's C
Explanation: Plankton have been in the sea for along time, and oil takea millions of years to recover. So when a dead plankton dies and drops to the ocean floor, the energy in the oil basically comes from sunlight that the plankton trapps with a chemical inside of it which produces oil.
what organelles are present in e-coli
Answers
Answer:
What organelles are present in e-coli
Explanation:
"E-coli does not have many organelles because it is a prokaryote . They do not have a nucleolus or a nuclear membrane."
Please help me!!please
Answers
Answer:
C.
Explanation:
:DDD
How can speciation of plants benefit humans?
Answers
Answer:
Plant speciation can benefit humans by becoming draught resistant, of medicinal value, increased fruit ad seed bearing properties or insect resistant, to name a few.
what would be the complementary strand of aatgac
Answers
Answer:
180 i hope this heleped sorry for late
Answer:
ttactg
Explanation:
base pairs
1. Explain how forces of attraction and repulsion exist within an atom.
Answers
Answer:
Oppositely charged particles attract each other, while like particles repel one another. Electrons are kept in the orbit around the nucleus by the electromagnetic force, because the nucleus in the center of the atom is positively charged and attracts the negatively charged electrons.
Explanation:
Answer:
1. Electrons surrounding a nucleus are attracted to the protons within it because electrons and protons have opposite charges. Electrons closest to the nucleus are attracted with such a force that they can’t escape from the atom. These electrons tend to shield the protons from electrons that are farther away because electrons have the same charge and repel each other. Electrons that are farther away have less attraction to the protons within the nucleus and are more likely to be detached from the atom.
2. Electrons can be transferred from atoms of one body to atoms of another body through friction. This can occur when one body is rubbed against another or when a liquid flows across a solid. In either case, one body may be given a positive charge while the other body is given a negative charge of the same magnitude. Both charges are developed at the same time. Electrons can also be transferred from one body to another when a charged body comes into contact with an uncharged body. The electrons move in the direction that will equalize the charges; thus, the uncharged body will be given the same charge as the charged body.
3. Free electrons move from points of negative charge to points of positive charge. When these electrons move freely from one point to another with little resistance, the material they’re traveling through is said to be a conductor. Conductors have a large number of free electrons. Insulators, on the other hand, have very few free electrons and offer great resistance to the movement of these electrons. Electric charges produced on one end of a body composed of insulating materials will most likely not spread throughout the body. In a conductor, this charge would spread throughout the entire body. Metals are generally conductors; oils, rubber, air, porcelain, and plastics are good insulators.
4.
Lightning is produced by the rapid transfer of free electrons when one of the following conditions exist: One part of a cloud is positively charged and a neighboring part of the same cloud is negatively charged. A positively charged cloud comes near a negatively charged cloud. A cloud with either a positive charge or a negative charge comes near the earth.Explanation:
Pennfoster answer
Which of the following is true regarding tissue?
a)
An example of tissue is the digestive system, which helps break down food
particles for organisms to obtain energy and nutrients.
Ob) Tissue is a group of specialized cells that work together for a common
function and form organs.
O c) Sponges are the only animal made of tissue and made of haploid cells.
d) Tissue is a group of diploid molecules bonded together chemically.
Answers
Answer:
True: b) Tissue is a group of specialized cells that work together for a common function and form organs.
Explanation:
Cells are the smallest units of life, they may be either unicellular or multicellular. Unicellular organs have a single cell capable of carrying out all of the functions necessary for its survival. Multicellular organisms are more complex, and require the work of multiple different cell types.
Their cells become differentiated- where they undergo certain processes to become specialized, and gain maturity. Groups of specialized cell types form tissue; these each have varying functions over time. Organs consist of two or more tissue types that are specifically organized to carry out a function.
Answer:
b) Tissue is a group of specialized cells that work together for a common
function and form organs.
Explanation:
Sponges are the simplest type of animal therefore they have a few different features than other animals. Like all animals, sponges are diploid, multicellular, heterotrophic, reproduce sexually, mobile, and don't have a cell wall. They are different in that their zygotes do not form into a blastula and they are not made of tissue.
Also, i took the quiz :)
Why do complex organisms need specialized cells?
A. Without them, complex organisms cannot perform different
functions.
B. Without them, complex organisms cannot reproduce.
C. Complex organisms need them to balance the mostly prokaryotic
cells.
D. Complex organisms need them to process bacteria and
paramecia.
Answers
Answer:
Your answer should be... Without them, complex organisms cannot perform different functions.
What is dna replication?
Answers
Answer:
In DNA replication, cell machinery copies strands of DNA.
Explanation
DNAs, deoxyribonucleic acids, are long-chain, helical macromolecules made of specific sequences of covalently bonded monomers called nucleotides. These contain genetic information essential for growth, reproduction, and cell repair.
Nucleotide monomers are made up of, a 5-Carbon deoxyribose sugar, one nitrogenous base (adenine, guanine thymine, and cytosine) and a phosphate group.
Nucleotides, deriving their name from their nitrogenous bases, pair up to form base pairs. In base-pair formation, Adenine and Thymine form double bonds, while cytosine forms triple bonds with guanine...
DNA polymerase facilitates either DNA synthesis, by adding free nucleases to parent strands -these are first unwound and separated by helicases DNApolys synthesize DNA in 5'-3' direction; due to its restricted movement, there are only two modes of replication: continuous from the point of strand separation, the fork, and discontinuous from the fork. In continuous replication, DNApolymerase moves uninterrupted along the 3'-5 oriented template, adding nucleotides to the free hydroxyl group at its 3' end to produce the 5'-3' oriented leading strand. During the synthesis of the 3'-5' oriented lagging strand, DNApolymerase moves backwards along the template from the replication fork; DNA helicase separates the strands, and DNApoly's addition of nucleotides is periodically interrupted while forming discontinuous Okazaki fragments. Ligase enzymes assemble nucleotide strands of RNA and DNA -here, DNAligase assembles these fragments into continuous strands, producing two identical new helixes formed from a parent and newly replicated strand respectively.Make a prediction of this: A group of scientists recently proposed the idea that beets should replace salt for melting winter ice. The scientists pointed out that because beets grow underground, they continue to grow in freezing conditions. Thus, they hypothesized, an extract of beet roots could melt ice on roads in winter. To test this hypothesis, the scientists froze equal volumes of water on two separate plates. They spread an extract of beet roots on one plate of ice and sprinkled an equal amount of salt over the other plate. After keeping both plates at 0°C (the temperature at which water freezes) for a period of time, they measured the amount of melted water on each plate. Their results showed that the plate treated with beet extract contained more liquid water than the plate treated with salt.
Answers
Answer:
extract of beet roots could be used as antifreeze for water systems
Explanation:
In science, a prediction can be defined as a plausible conjecture that is subsequently proved (or rejected) using the scientific method. In other words, a prediction is the expected result obtained if the hypothesis is true. Scientists make predictions based on falsifiable hypotheses which can be tested through experimental and/or observational procedures. In this case, it could be predicted that the extract of beet roots could be used as anti-freeze for water systems in cold climates.
What are the organs in the circulatory system
Answers
Answer:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.DNA includes the instructions for building __________.
Answers
What is the role of mitochondria in eukaryotic cells? A. to transport materials throughout the cell. B. to provide structure and mechanical support for the cell
c. to regulate the flow of materials in and out of the cell.
D. to generate chemical energy that powers the cell
Answers
Cell membrane
Rough endoplas... reticulum
Smooth endoplas... reticulum
Flagellum
See more
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Searches related to What is the role of mitochondria in eukaryotic cells? A. to transport materials throughout the cell. B. to provide structure and mechanical support for the cell c. to regulate the flow of materials in and out of the cell. D. to generate chemical energy that powers the cell
ribosomes
prokaryotic cells
which of the following occurs in the nucleus in a eukaryotic cell
Explanation:
Answer:
D. to generate chemical energy that powers the cell
Select from the drop-down menu to correctly complete the statement. Organs combine to form... Plz help
Answers
Answer:
An Organ system
Explanation:
Answer:
An Organ System
Explanation:
NOT an organism
Don't get it mixed up
Honey Bunches
Giving Brainliest:)
How does this equation represent the law of conservation of energy—that energy cannot be created or destroyed? Consider the role of photosynthesis in your answer.
Answers
Answer:
Energy from the sun goes into making the sugar molecule. This energy is released to make ATP and heat.
Explanation:
6Co2+6H20->C6H12O6(glucose)+6O2(oxygen)
The sugar molecule is created by solar energy. This energy is discharged to produce heat and ATP.
What is the law of conservation of energy?
According to the rule of conservation of energy, energy can only be transformed from one form of energy to another and cannot be generated or destroyed.
This indicates that unless energy is introduced from the outside, a system always has the same quantity of energy. In the situation of non-conservative forces, when energy is changed from mechanical energy to thermal energy yet the overall energy does not change, this is especially perplexing. Energy must be changed from one form to another in order to be used.
In photosynthesis,
6CO + 6H₂O → C₆H₁₂O₆ + 6O₂
Sunlight is used for the light energy required to produce the sugar molecule.
Therefore, the law of conservation of energy is applicable in photosynthesis as energy from the sun is utilized by all living organisms.
Read more about energy law, here
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A. statements about sex-limited traits are true?
B. Genes for the trait are present in both genders.
C. Growing a beard in males is an example of a sex-limited trait.
D. The traits aren’t expressed physically.
E. Developing green eyes is an example of a sex-limited trait.
Answers
Answer: Growing a beard in males is an example of a sex-limited trait.
How is a cell a system?
Answers
Answer: wdym
Explanation:
Cells have many parts, each with a different function. ... It also provides a track-like system that directs the movement of organelles and other substances within cells. Endoplasmic reticulum (ER) This organelle helps process molecules created by the cell.
12Which statement best describes the relationship that exists among proteins, DNA, and
cells?
a. Proteins combine to produce cells, which produce DNA
b. Proteins are made up of DNA, which determines the cells that are produced.
cDNA is made up of proteins, which tell a cell how to function
d. Cells contain DNA, which controls the production of proteins.
Answers
Answer:
C
Explanation:
A DNA is made up of proteins which was synthesized by ribosomes of the cell to produce mRNA and then these mRNA and used to catalyse the DNA production. DNA of a cell in the nucleus is the programmed individuality that controls, manages and organizes the entire cell to function and initiate celluar activities.
Answer:
it c
Explanation:
i took the test
how does the nervous system send messages to the other parts of the body
Answers
Answer:
by signals that the nervous system sends to the brain
Explanation:
Sally conducts an experiment measuring plant growth. She finds that after two weeks, a plant that receives water grew 4 cm, but the plant that received soda died. What is the term for what is being measured?
Answers
Answer:
The correct answer is - the dependent variable.
Explanation:
In any study or research, the variable is that measured or affected by the change occurs lace in an experiment is called the dependent variable. The dependent variable depends on the factors or the variables that are changed in the experiment.
In this particular study, the variable which is measure is the height or growth of the plant which depends on the change in the hydrating supply so the dependent variable will be - the growth of the plant.
Biology books used to describe interphase as the “resting phase.” Based on what we know now, what was wrong with this term?
Answers
Answer: because in the interphase the cell still goes through changes(growth, replication of its DNA), they are just not visible by microscope. Therefore, the cell isn't resting.
Men who are kidnapped for human trafficking are usually held under debt bondage or _____.
soldiering
peonage
sex slavery
sex tourism
Answers
Answer:
It is Soldering not peonage
Explanation:
Peonage is what they do for Men not young boys.
Men who are kidnapped for human trafficking are usually held under debt bondage or peonage. Option B. This is further explained below.
What is peonage?Generally, Men who are kidnapped for human trafficking are frequently held hostage.
In conclusion, peonage defines Men who are kidnapped for human trafficking.
Read more about Humans
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The ____ likes to play a lot.
a. lion
b. gorilla
c. snake
d. monkey
Answers
Answer:
D
Explanation:
Its either a gorilla or monkey,but monkey sounds right.
Happy Thanksgiving ;D
Answer:
monkey
Explanation: