Answer:
sun earth moon
Explanation:
earths shadow blocks suns light and the moon reflects the light
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Which is it?? DNA, RNA, or Both??
1. Single-Stranded
2. Double-Stranded
3. Nitrogen bases
4. Thymine
5. Uracil
6. Double Helix
which structure makes proteins using instructions from the nucleus
Answer:
ribosomes
Explanation:
Ribosomes are small particles of RNA and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build.
What is dna replication?
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.Density independent factors are
Answer:
Density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
Explanation:
How is a cell a system?
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.
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
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 position will kamala harris hold on sunday 20,2021
Answer:
Vice President?
Explanation:
Answer:
vice president she the first black woman,indian and woman to be vice president her innaguration was yesterday
Explanation:
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.
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.
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.
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
Sea floor spreading happens in which plate boundaries?
Answer:
Divergent plate boundaries.
Explanation:
"As upwelling of magma continues, the plates continue to diverge, a process known as seafloor spreading. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre".
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DNA includes the instructions for building __________.
Someone please help me out!!!!!
How do you think the body processes monosaccharides differently than polysaccharides? Would they take the same amount of time to digest and harvest energy?
Answer:
Polysaccharides from cell walls make up the fiber humans eat, while monosaccharides provide the sweetness in foods. As humans eat, chewing breaks down polysaccharides into smaller particles that eventually, through digestion, yield up the simple monosaccharides that can pass into the bloodstream.
Explanation:
EASY 10 POINTS
Why do plant cells need chloroplasts?
Answer:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. In this respect they are similar to mitochondria, but are found only in plants and protista.
Explanation:
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How do the three types of distribution differ from one another?
Explanation:
direct channel allows the consumer to make purchases from the manufacturer while an indirect channel allows the consumer to buy the goods from a wholesaler or retailer. Indirect channels are typical for goods that are sold in traditional brick-and-mortar stores.
Adaptations that help an organism survive appear quickly. True or False? And why
Answer:
false
Explanation:
is not worth it to do that
According to the theory of natural selection, features that may be passed down help animals adapt to their surroundings more successfully than their kin.
What condition that make organism adaptive?Adaptations are passable traits that improve an organism's capacity to endure and procreate in a given environment. An organism can manage in harsh settings, locate food and water, and protect itself by adapting.
This is the outcome of a process called natural selection. A species' nature gradually changes as a result of natural selection in order for it to fit into the niche.
If a species becomes extraordinarily well adapted to its habitat and the environment does not change, it can survive for a very long time before going extinct.
Therefore, it is false that, Adaptations that help an organism survive appear quickly.
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A fungus cell is a prokaryotic cell. True or false?
Which of these is a characteristic of sexual reproduction?A)It takes place in all cells of the body.B)It forms exact copies of the parent cell.C)It results in offspring with genetic variation.D)It requires only one parent to form a daughter cell.
Answer/Explanation:
It results in offspring with genetic variation. 2 different mates must be used in sexual reproduction. This is because each person is different since cells are produced and combined differently in the original offsprings. If the two adults were exactly the same, the offspring would have the exact same cell traits. Likewise will be done for the offspring of the two adults. The genes may be similiar to the ones of the adults, but since combined it will not be an exact replica. In the long run sexual reproduction will result in an offspring with slightly different traits or genetic variation.
Part D)
Think about pushing two boxes of different weights across the floor-one box is a lot heavier than the other box. How will the amount of force change as you push each box? Explain how this relates to energy expenditure of two people-one person who's heavler than the other.
This is on plato and edmentrum. :)
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
copied directly from edmentum/plato
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
What is the correct order of a food chain containing the following organisms: quail (bird), desert shrub, coyote, snake?
Answer:
desert shrub - quail - snake - coyote
Explanation:
the quail bird eats the desert shrub, the snake eats the quail, the coyote (a-pex predator in this chain) eats the snake.
Alexis is using models of the cell membrane to compare the types of cellular transport. One
model shows a molecule entering through a protein pump. Which ope of cell transport is
being modeled?
A
diffusion because protein pumps are needed to move substances from a higher
concentration to a lower concentration
8
endocytosis, because protein pumps transport substances that are too large to
pass through the cell membrane
active transport, because protein pumps are needed to move substances against a
concentration difference
D
osmosis, because protein pumps allow water to cross the cell membrane
Answer:
C. active transport, because protein pumps are needed to move substances against a concentration difference
Explanation:
There are two major types of transport in living cells namely: passive transport and active transport. The passive transport moves molecules down a concentration gradient and hence, do not need energy (ATP) to occur. However, on the other hand, ACTIVE TRANSPORT moves substances against their concentration gradient, thus, require energy input.
Active transport makes use of PROTEIN PUMPS to achieve this process. Hence, in this case where Alexis is using models of the cell membrane to compare the types of cellular transport. The model that shows a molecule entering through a protein pump is modelling ACTIVE TRANSPORT.
What is the role of adenosine triphosphate (ATP) within a cell?
A) Release carbon dioxide
B) Biological molecule that stores energy
C) Use glucose
D) Controls chemical reactions
Answer:
Its B. Biological molecule that stores energy
can someone quickly answer this i need to finish so many other things lol
Explanation:
A eukaryotic cell contains membrane-bound organelles such as a nucleus, mitochondria, and an endoplasmic reticulum. Organisms based on the eukaryotic cell include protozoa, fungi, plants, and animals. These organisms are grouped into the biological domain Eukaryota.
Any organism which has a closed membrane for a nucleas is a eukaryotic cell.
(organisms who dont have a nuclear memebrane is called prokaryotic cell)
We have eukaryotic cells as we have nuclear membrane but a bactaria(a prokaryotic cell) doesnt have a nuclear memebrane and all of its nuclear substances are floating insdie it getting jumbled up.
Most enzymes are proteins. Many cells make and use an enzyme called catalase to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2). Stephanie is investigating the structure and function of catalase, and she is comparing catalase to other proteins. What can Stephanie predict will distinguish the structure of catalase from the structures of the other proteins she is studying? A. many regions made entirely of hydrogen and oxygen B. the chemical properties of the peptide bonds C. the types of amino acids it contains D. the sequence of amino acids it contains
Answer:
The correct answer is - B. the chemical properties of the peptide bonds.
Explanation:
The difference between the structures of catalase from other proteins depends on the chemical properties of the peptide bonds present in between the amino acids which decide the pH and temperature by their disruption. These bonds present between two alpha-amino acids when carboxyl of one amino acid interacts with the amino group of the other to form an amide-type covalent bond.
1. Explain how forces of attraction and repulsion exist within an atom.
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
how does the nervous system send messages to the other parts of the body
Answer:
by signals that the nervous system sends to the brain
Explanation:
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 .
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.
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
Answer:
b? ig I mean u could experiance all, but this is an 8th grader talking what do i know?
Explanation:
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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.
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.
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Men who are kidnapped for human trafficking are usually held under debt bondage or _____.
soldiering
peonage
sex slavery
sex tourism
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.
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2/3 divided by 1/6
Answer:
4
Explanation: