Help ASAP please been stuck on this for 2 days
Answer:
mRNA ( ribonucleic acid ) is the correct answer
hope this helps
plz mark as brainliest
Which best describes activation energy?
A. the maximum amount of energy required to end a chemical reaction
B. the amount of energy absorbed in an endothermic reaction
C. the minimum amount of energy required to start a chemical reaction
D. the amount of energy released in an exothermic reaction
Answer:
The answer is B
Explanation:
as activation energy is the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.
Activation energy is the minimum amount of energy needed to start a chemical reaction.
• The minimum amount of additional energy needed by a reacting molecule to get transformed into the product is termed activation energy.
• It can also be illustrated as the least amount of energy required to energize or stimulate the atoms or molecules so that they go through a chemical reaction or transformation.
• It is denoted by Ea and is generally measured in kilojoules per mole or joules.
• The activation energy relies upon two factors, that is, the effect of catalyst and the nature of reactants.
Thus, activation energy is the minimum amount of energy required to start a chemical reaction. Option C is correct.
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Which of the following is a correctly formed DNA molecule?*
10 points
А
B
С
D
Fat
Fat-
EAA-
FCC
EGG
IT
Fath
FATI
ECG-
FCG-
FTA 1
Fact
FACH
FCA
FGT-
FTG
TC
FGG-
FCT-
AA1
A
B
Θ Ο Ο Ο Ο
С
This is a required question
Answer:
B
Explanation:
B is the correctly formed DNA molecule
You are growing a plant in space and remove oxygen from it's growth chamber. What do you expect to happen to the plant?
Answer:
It is gong to suffocate. It will die and shrivel up.
Explanation:
how do cells use enzymes?
Answer:
Some enzymes help break large molecules into smaller pieces that are more easily absorbed by the body. ... Other enzymes help bind two molecules together to produce a new molecule. Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction.
Explanation:
what occurs inside a cell while it performing the process of photosynthesis
Answer: Some of the light energy is converted to chemical energy. During this process, a phosphate is added to a molecule to cause the formation of ATP.
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Which of the following mutations will cause the least damage to the resulting protein? An insertion at the end of the DNA strand. deletion at the beginning of a DNA strand. A silent substitution at the beginning of the DNA strand. A missense substimion at the end of the DNA strand.
Answer:
A missense substimion at the end of the DNA strand.
Explanation:
A missense mutation is a mistake in the DNA which results in the wrong amino acid being incorporated into a protein because of change, that single DNA sequence change, results in a different amino acid codon which the ribosome recognizes. Changes in amino acid can be very important in the function of a protein. But sometimes they make no difference at all, or very little difference. Sometimes missense mutations cause amino acids to be incorporated, which make the protein more effective in doing its job. More frequently, it causes the protein to be less effective in doing its job. But this is really the grist of evolution, when missense mutations happen, and therefore small changes, frequently small changes in proteins, happen, and it happens to be that it improves the function of a protein. That will sometimes give the organism that has it a competitive advantage over its colleagues and be maintained in the population.
The degree to which two separate structures that are closed together can be distinguished .
Answer:
Resolution
Explanation:
Explanation:
the answer is Resolution
What's today's most pressing environmental issue?
A. Food shortages
B. Climate change
C. Pesticide contamination
D. Flooding
Answer:
climate change
Explanation:
several different classes make up a ___.
family
order
phylum
kingdom
Several different classes make up a phylum
What is a phylumIn biological classification, several different classes make up a phylum. The hierarchical classification of living organisms consists of various levels, including kingdom, phylum, class, order, family, genus, and species. These levels help organize and categorize organisms based on their shared characteristics and evolutionary relationships.
A phylum is a taxonomic rank below the kingdom and above the class. It represents a major division within a kingdom, grouping together organisms that share certain structural and functional features.
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Please help me i don’t understand this
Answer: So this is like a food chain chart. The animals at the top are one top of the food chain and do not get eaten by anything; they dont have any predators. This chart goes from bottom up. So the plants have arrows pointing to animals. Those animals that the plants are pointing to are the animals that eat that plant. And then those animals point to another animal higher on the chain and those animals that are higher eat the animals that are lower than them and have the arrow pointing at them. So the snake is pointing to the owl because the owl eats the snake. The frog is pointing to the snake because the snake eats the frog. And the list on the side of the chart is just a list of different kinds of animals. I dont remember what each of them are so you are going to have to find out what element is missing.
Explanation:
Describe how plant cells keep themselves rigid.
Answer:
Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls allow plants to have rigid structures as varied as wood trunks and supple leaves; and vacuoles allow plant cells to change size.
Explanation:
Its right
Plant cells should be treated as rigid due to the cell wall.
The information regarding the cell wall is as follows:
It is the envelope that is treated as the extracellular and present in all types of vegetables having few bacteria, fungi, etc. The composition should be changed as the organism habit. Also, the cell wall should be responsible for the plant cells rigidity.Learn more: brainly.com/question/23334479
Because plants can't search out sources of water, Madison wonders what special adaptations they must have for storing water. In plants, this is reflected in the larger size of what organelle?
Answer:
It is reflected in the larger size of VACUOLE
Explanation:
Plants have larger VACUOLE compare to animals because VACUOLE is an organelle present in plants that help plants store water and other materials.
Even plants stop growing, the VACUOLE serve as storage units that stores large volume of water and food. These special adaptations in plants enable them store water in VACUOLE organelle which is use for metabolic processes in the plant cells.
SOMEONE HELP ME IM AHOUT TO CRY I DONT UNDERSTAND
Humans process some foods by adding chemicals to reduce bacterial growth, contain the production of toxins, and improve taste. This allows foods to be edible for longer periods of time. Which best describes the advantages of food processing? Control of density-independent limiting factors control of density-dependent limiting factors decrease in food nutrient levels adverse health affects
Answer:
The correct answer is - control density-dependent limiting factor.
Explanation:
Density-dependent factors are the factors that show various effects on the population size and growth based on the density of the population and effects vary with different density of population.
These factors are generally biotic such as competition for food and space and many other factors. Food processing involves the processes that help food to be edible for a longer period.
Availability of food depends on the density of the population which makes it is a density-dependent factor, processing is advantageous as if it maintains the food for a longer time or gives control over the density-dependent factor.
Answer:
the answer would be c
Explanation:
because the human process food very badly
The chemical reaction equation of photosyntesis is shown here: 6CO + 6HO + light CHO+ 6O What information is not given in this equation. It does not show if the reaction is reversible. It does not show the reactants needed for the reaction. It does not show that photosynthesis consists of many separate steps. It does not show the number of molecules required to produce glucose.
Answer:
It does not show that photosynthesis consists of many separate steps.
Explanation:
Photosynthesis is the metabolic process whereby plants and other certain organisms synthesize their food (glucose) using sunlight. The general chemical equation of the photosynthetic process is depicted below:
6CO2 + 6H2O + light --> C6H12O6 + 6O2
This equation gives a general breakdown or a summary of what occurs in the process of photosynthesis, however, it is not that simple. Photosynthesis involves MANY SEPARATE STEPS that the equation is not showing. For example, the equation does not show that photosynthesis occurs in two stages namely: light-dependent phase and light independent phase.
Which components bond with the nitrogenous base, guanine, in a section of double-stranded DNA?
Options:
Ribose sugar and uracil
Deoxyribose sugar, phosphate, and Thymine
Guanine, cytosine, and phosphate
Cytosine and deoxyribose sugar
Answer: Cytosine and deoxyribose sugar
Explanation: : Remember the base pairing rules: cytosine with guanine and adenine with thymine, in equal amounts. To compliment the given base,, you'd have to choose the nucleotide that would pair with it, attached to a phosphate-sugar backbone. I'm not quite sure why they didn't include phosphate in that option, but it's the only possible one. Guanine couldn't pair with any of the other listed options.
Hope this helps,
Lacia :)
Answer:
Cytosine and deoxyribose sugar
Explanation:
this answer is right i got a 100% on my 7.01-7.03 quiz
Which of these cell types would you expect to find in muscle tissue? Squamous cells, stellate cells, discoid cells, fibrous cells
Fibrous cells are the cell types that would be expected to find in muscle tissue.
Muscle fiber is a portion of the muscles, made up of cells that vary depending on the organ in which it is found.
These are located inside the muscle, and in turn are composed of:
Sarcolemma receives the impulse that activates the contraction of the muscle. Mitochondria are the structures that contain ATP. Myofibrils in charge of giving it the elastic characteristic and is made up of actin and myosin. Nucleus: contains the information. Sarcoplasmic reticulum that is responsible for containing calcium ions that will be used during contraction.Muscle fibers are cells that are responsible for producing the strength of the muscular system, thanks to all the components it can produce fast or slow contraction.
Therefore, we can conclude that fibrous cells are the cell types that would be expected to find in muscle tissue.
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I really need help and fast answer all the questions please whoever answers get brainliest
1. A student wanted to test how the mass of a paper airplane affected the distance it would fly. Paper clips were
added before each test flight. As each paper clip was added, the plane was tested to determine how far it would
fly.
Independent variable ___________________________
Dependent variable ____________________________
Control _____________________________
Constant ____________________________
2. Two groups of students were tested to compare their speed working math problems. Each group was given
the same problems. One group used calculators and the other group computed without calculators.
Independent variable ___________________________
Dependent variable ____________________________
Control _____________________________
Constant ______________________________
3. Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured.
Independent variable ___________________________
Dependent variable ____________________________
Constant ______________________________
There can be several controlled variables. If an experiment is to be useful, only one variable at a time can
be manipulated intentionally. All other variables must be controlled throughout all parts of the
experiment. If more than one variable is altered (changed), the results of an experiment cannot be
interpreted with any validity.
4. An experiment was performed to determine how the amount of coffee grounds could affect the taste of
coffee. The same kind of coffee, the same percolator, the same amount and type of water, the same perking
time, and the same electrical sources were used.
Independent variable ___________________________
Dependent variable ____________________________
Constants (3) ____________________________________________________________
Answer:
1. Independent variable- paper clips
Dependent variable- how far it will fly.
Control- mass of plane
Constant- type of plane
2. independent variable- using calculators
dependent variable- who will answer the questions faster
Control- the time the groups get done with the math problems
Constant- the math problems
3. Independent variable- Age of children
Dependent variable- the time it takes to complete the puzzle.
Constant- The type of puzzle
4. Independent variable- Amount of coffee grounds
Dependent variable- The taste of the coffee
Constants(3)- The same kind of coffee, same type of water, and the same perking time.
Explanation: The dependent variable depends on the independent variables change. For example: The amount of coffee grounds determine the taste of the coffee. The coffee grounds would be the independent variable because the dependent variable is the taste of the coffee, and the taste of the coffee determines on how much coffee grounds we use. Constants are the things that stay the same during the experiment. For example: We use the same brand of coffee throughout the experiment, so the brand of coffee is our constant. The controls are the things that do change. For example: The paper clips on the plane weighed the plane down more and more each experiment. So, the control would be the amount of paper clips used each test. The mass could also be a control in this experiment because the change in the paper clips changes the mass of the plane. I did this in 7th grade, and i am in 11th, so I know this is correct. I hope this helps you:)
Proteins are made out of ____________.
What determines the primary structure of a protein?
State two functions of proteins.
What are enzymes?
Describe the role of hemoglobin.
Answer:
proteins are made of amino acids
The primary structure of a protein refers to the sequence of amino acids in the polypeptide chain. ... The primary structure of a protein is determined by the gene corresponding to the protein. A specific sequence of nucleotides in DNA is transcribed into mRNA, which is read by the ribosome in a process called translation
causes Biochemical Reactions,Transports and Stores Nutrients
Hemoglobin is a protein that is used to carry oxygen through the bloodstream from the lungs to the tissues. This is important for survival. Hemoglobin has a lower affinity for oxygen the lower the concentration of oxygen gets. This has great implications for the human body and has helped us adapt very effectively. :-)
What is the name of the tiny blood vessels that surround the alveoli? O A. Capillaries O B. Pharynx O C. Bronchioles O D. Trachea
Answer:
At the very end of the air passages, are clusters of tiny air filled sacs called alveoli . These air sacs are surrounded by small blood vessels called capillaries
Explanation:
The name of the tiny blood vessels that surround the alveoli is Capillaries.
What are capillaries?Capillaries are the places where the exchange of substances between the blood and adjacent tissues takes place. Substance exchange can occur both between the cells that form the vessel wall and across it. Pores present in some types of blood capillaries also act as transfer sites.
Blood capillaries or capillaries as the lining of these little balls are called, are blood vessels of the circulatory system in the form of small tubes. In them, there is a large amount of carbon dioxide that diffuses into the alveolar air.
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Equation for Aerobic Respiration
Someone help? I don’t get it :(
Answer:
a) Tall and purple
b) Tall and white
c) short and white
d) short and Purple
Explanation
when both alleles are same it is called homoozygous condition and when alleles are different it is called heterozygous condition
As tall(T) and purple(P) characteristics of plant are dominant so no matter whatever the alleles are,
TT or Tt its going to be tall
PP or Pp its going to be purple
TT and PP are Homoozygous Dominant
Tt and Pp are Heterozygous Dominant
but to get short or white both the alleles should be homoozygous recessive that is,
tt for short
pp for white
Which example is classified as a body fossil?
A) footprint of a stone-age individual
B) ancient shark vertebra
C) fossilized bird droppings
D) a worm trail
Answer:
A
Explanation:
Answer:
ancient shark vertebra
Explanation:
what is a factorial design
Answer:
Factorial design involves having more than one independent variable, or factor, in a study. ... Factorial design studies are named for the number of levels of the factors. A study with two factors that each have two levels, for example, is called a 2x2 factorial design.
Explanation:
what organelle is used to describe fine strands of DNA wrapped in protein?
Answer:
The nucleus
Explanation:
houses the cell's genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.
I will name you the Brainlyest if you answer
PLEASE HELP ME!!!
Answer:
this is because water which absorbs by the root through osmosis from the soil was transported to other part of the plant that is why root appear dehydrated.
Please help me!!! Lots of Points and Brainliest for correct answers!! :))
The anther and pollen are the male reproductive parts of the plant. How do you think pollen plays a role in reproduction?
Answer:
When bees spread pollen from flower to flower it fertilizes the seeds in other flowers allowing them to reproduce.
Explanation:
Name an animal that both direcrly and I’m direcrly benefits humans
Answer:
Honeybees both directly and indirectly affect humans. They make honey and pollinate .
Explanation:
Answer:
honey bees they help by pollonating plants an flowers because if they didnt then we couldnt survive
Explanation:
Suppose global warming leads to a year of less rainfall How will this affect the environment's carrying capacity?