Answer:
There are many types of challenges are faced by the scientists in 21st century. some are as given below:
Explanation:
1. Getting biodiversity. We're losing species at a disturbing rate, and we have to comprehend what the implications of that may be.
2. sustainable development. Like feasible agriculture, yet more broad sense. Discovering approaches to accommodate human needs while limiting the mischief we cause to the earth is urgent.
3. Everything about hereditary qualities. It's simply so much fun.
4. The most effective method to cut across political, social, and social limits and spur enormous and little scope activity to lessen biodiversity loss. This point may have a hefty sociology component, yet it's significant. All the natural and biological information on the planet won't make any difference on the off chance that we can't get individuals to follow up on it.
Read this description of the life cycle of a mushroom. 1. A mushroom begins to grow underground as a single-celled "spore.” 2. The spore grows into multicellular structures called "hyphae.” 3. The hyphae absorb nutrition and detect when conditions are right to sprout a mushroom above ground. 4. The sprouted mushroom then forms new spores that can enter the ground and begin the life cycle again. Which sentence about this life cycle shows that mushrooms need energy and respond to stimuli? A: A mushroom begins to grow underground as a single-celled “spore.” B: The spore grows into multicellular structures called “hyphae.” C: The hyphae absorb nutrition and detect when conditions are right to sprout a mushroom above ground. D: The sprouted mushroom then forms new spores that can enter the ground and begin the life cycle again
Answer:
youranswerisletterbbcauseThesporegrowsintomulticellularstructures calledhyphaemakesthemostsence
Explanation: :D Im Happy to help
Answer:
C
Explanation:
Where would you expect to find genetic material in a prokaryotic cell?
( WILL MARK BRAINLIEST)
A. In the organelles
B. In the cytoplasm
C. A prokaryotic cell does not genetic material
Answer:
Your answer is Option B
hope this helped you
please mark as the brainliest (ㆁωㆁ)
Answer:
B, in the cytoplasm
Explanation:
Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome, of circular DNA. The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane. This question is worded quite strangely, as the nucleus is an organelle it would make better sense to say in the organelles but it refers to organelles as plural and it's not in any other organelle but the nucleus, the cytoplasm is what surrounds the organelles and has direct contact with the cell membrane, the nucleoid also does not contain any enclosing membrane
What two factors keep Earth in orbit around the sun and the moon in orbit around Earth? A:gravity and distance B:Mass and distance C:force and speed D:gravity and force
Answer:
gravity and inertia Gravity keeps Earth, along with the other planets in line, as inertia keeps them moving creating an orbit.
its C hope it help
Which is a main function of lipids?
O providing energy storage
O transmitting genetic information
O forming bone and muscles
O fighting infection and disease
providing energy storage
Which clue can be used to identify a chemical reaction as a combustion reaction? Oxygen is a product. A hydrocarbon reacts with oxygen. Water and carbon dioxide react. The reaction involves ions.
Answer:
A hydrocarbon reacts with oxygen
Explanation:
The clue that can be used to identify a chemical reaction as a combustion reaction from the options would be if a hydrocarbon reacts with oxygen.
Basically, a combustion reaction is a kind of reaction involving oxygen and another reactant with energy being released in the process. The energy is usually in the form of light and heat.
Thus, following the definition:
Oxygen is rather a reactant, and may not be a product in combustion reactionsWater reacting with carbon dioxide is not a combustion reactionReaction involving ions may not be a combustion reactionThe only reaction that may identify as a combustion reaction is, therefore, the one involving hydrocarbon and oxygen.
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A student conducted an experiment with two rose plants to determine if a liquid formula for fertilizer produced greater growth than a dry formula. After testing each fertilizer on two different plants for one month, his data led to the conclusion that the liquid formula was a better promoter of plant growth. When he described his conclusion to his teacher, she told him he needed to conduct additional trials. The teacher most likely asked for additional trials because she did not believe the new formula helped plants grow better than the old formula. it was necessary to see data from more plants before the conclusion could be accepted. it was necessary to have tested the fertilizer on different kinds of plants. she thought he should test additional fertilizer formulas on the same two plants.
Answer: it was necessary to see data from more plants before the conclusion could be accepted
Explanation: i got it right
Answer:
necessary to see data from more plants before the conclusion could be accepted
Explanation:
took the test
PLS ANSWER ASAP 100 POINTS. Which of the following choices A, B, C or D best describes the enzyme reaction graph below? Justify your choice.
Answer:
you havent given a graph.
Explanation:
are human skin cells from inside the mouth prokaryote or eukaryotic?
Answer:
Eukaryotic
Explanation:
(MICROSCOPES) "If the total magnification is 40x. The eyepiece is 10x, what is the power of the objective lens?"
PLEASE HELP! ILL GIVE 5 STARS.
Answer: the answer should be 400x
Explanation: duh
Which genotype is written incorrectly? AaAP pApr iiYy
When someone challenges your opinion, you should ___________________. A. repeat your opinion again until they are convinced. B. acknowledge their opinion and make sure you have a valid argument to respond with. If you do not have a valid argument, you may be in the wrong. C. ignore them, their opinion doesn’t matter when you have already formed your own opinion. D. accept their opinion as correct, especially if they have a degree.
Opinions are the views formed concerning something. When an opinion is challenged, then one should acknowledge them and ensure that a valid argument is presented in the counterclaim. Thus, option B is correct.
What is a counterclaim?A counterclaim is a rebuttal made against the claim made previously and is the response of an individual to the presented opinions or judgments. It is generally presented to clear and oppose the ideas claimed by the opposition.
If an idea of a person is challenged then the person can respond by presenting a reasonable argument that can validate the ideas and opinions as true and accurate rather than getting them as incorrect.
If a valid argument is not presented then there might be a possibility that the ideas and opinions presented were not true or correct.
Therefore, one should acknowledge other people's opinions by providing a valid argument.
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Which model represents the Law of Conservation of Mass?
Select the correct answer. Which property of a substance can be determined using a pH indicator? A. acidity B. boiling point C. density D. electrical conductivity E. thermal conductivity
Answer:
Acidity
Explanation: I took a test :)
Water has the property of having a high specific heat. This trait has a great influence on maintaining homeostasis within the body. Which of the following accurately explains what it means to have a high specific heat
Answer:
We can write the specific heat as:
C = (dU/dT)
Where C is the specific heat, U is the internal energy and T is the temperature.
This is:
"How much does change the internal energy when the temperature changes".
Having a high specific heat (and positive) means that for every little increase in the temperature we will have a large change in the internal energy.
What does this mean?
Think in the inverse way:
A larger specific heat means that we need a large amount of heat (the heat is energy) to change a little the temperature.
Then this is good, because even when receiving a lot of heat, the body temperature will remain about the same.
What happens to hydrogen bonds when water turns to ice?
Answer:
at temperatures low enough to turn off the disruptive effects of thermal motions, water freezes into ice in which the hydrogen bonds form a rigid and stable network.
Explanation:
Notice that the hydrogen bond (shown by the dashed green line) is somewhat longer than the covalent O—H bond.
The microbiome consists mostly of _____.
Answer: Bacteria, fungi, archaea, protists and viruses
Explanation:
The human microbiota does not include plants, but is composed of bacteria, fungi, archaea, protists, and viruses. Has two definitions: Microbiome (genetic) - The collective genome of the microbes living in and on our bodies.
the white blood cells stops the infections before it can infect the body ?
Answer:
The answer to the question is true
Help due tomorrow!!!
which of the following is not a reactant needed for photosynthesis
A. sunlight
B. oxygen
C. carbon dioxide
D. water
Answer:
I think it B
Explanation:
By definition of photosynthesis, oxygen is not a reactant needed for photosynthesis.
First, you have to know that photosynthesis is a metabolic process carried out by certain cells of autotrophic organisms, that is, those that have the capacity to make their own food, such as plants.
With this process, plants capture the energy of sunlight and transform it into chemical energy, to produce organic matter.
Photosynthesis takes place in 2 stages:
In the first stage the plants absorb water from the soil through the roots. Through their stems they transport it to their leaves. In these it meets the sunlight captured by chlorophyll, which breaks the water molecule, separating hydrogen (H) from oxygen (O2).The other stage is capturing carbon dioxide. This provides the carbon and oxygen atoms that, together with hydrogen and stored energy, will form the glucose molecule, from which compounds are produced that are the basis of food for plants and other living beings.Then, sunlight, carbon dioxide and water are needed for the photosyntesis, while oxygen is released to the environment.
This is sunlight, carbon dioxide and water are reactants needed for photosyntesis, and oxygen is not a reactant needed.
Learn more:
https://brainly.com/question/13523854?referrer=searchResultshttps://brainly.com/question/13523849?referrer=searchResultshttps://brainly.com/question/873199?referrer=searchResultsYou use
friction when you leave marks on paper with a
pencil “lead."
Answer:
Yes, this is true
Explanation:
I hope I helped.
What should you do if you get chemicals in your eyes?
A. Wipe off your eyes with a napkin.
B. Put on safety goggles and keep working
C. Finish your experiment before doing anything about it.
D. Tell your teacher and use the eye-wash station.
Answer: D is the answer
Which parasite completes their life cycle by mating, engorge from feeding, then dropping to the ground
to lay eggs in the environment?
Answer: Females
Explanation:
how Polar molecules can dissolves other polar molecules?
Explanation:
polar molecules do not have a symmetrical distribution of charge. one part of the molecule will be more negative and another part will be more positive which allows polar substances to dissolve each other.
Shannon wants to see if the amount of time she studies will affect her grades. She normally studies for 30 minutes a night but decides to double her study time to one hour per night. Over the next three weeks, Shannon sees her science grade raise 10%
A. Independent Variable=
B. Dependent Variable=
C. Control=
Answer:
it is an independent variable as it can be changed by studying and also a dependent variable as you can measure her results and see its increase or decrease
Explanation:
hope this helps
could u pls help me with my latest questions pls pls pls pls pls
The variables in the given situation would be as follows:
A). Independent Variable: Amount of time given on study
B). Dependent Variable: Grade in Science
C). Control: Additional Study of 30 minutes
In an experiment or research, an independent variable is described as a variable that remains unaffected by the change in other but rather a manipulation or change in it can affect the other variables. Dependent variables are the variables that receive a direct effect of change in the other variable and therefore, it is the variable that the researcher aims to measure or study.While control helps in making the comparison of the results with or without it. Thus, the given variables are classified in this situation as mentioned above.
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A 35-year-old bank clerk presents to your office for evaluation of fatigue. She has a 15-pack-year history of smoking and had rheumatic heart fever in childhood. On auscultation of her heart, the S2 sound is widely split; that is, it persists like that throughout the respiratory cycle. What is the most likely cause of the wide and fixed S2 split?
Answer:
I
Explanation:
Which statement is the first step of protein synthesis?(1 point) A ribosome attaches to the mRNA. DNA unzips between the base pairs. tRNA carries amino acids to the ribosome and attaches it to the mRNA strand. Amino acids are linked together with peptide bonds.
Answer:
DNA unzips between base pairs.
Explanation:
This is the first step of protein synthesis.
The first step of protein synthesis is attachment of mRNA to ribosomes. Option A is correct.
Protein synthesis:
It is known as translation. In this mRNA is translated in to the sequence of amino acids which ultimately form protein.
First mRNA attach to ribosome,tRNA bring amino acid to ribosomes and attach to mRNA.Amino acids bond together via peptide bond.Therefore, the first step of protein synthesis is attachment of mRNA to ribosomes.
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4. If a galaxy is moving towards us, what would happen to the wavelengths of light that we see? How
would that change what we see?
Answer:
Redshift and blueshift describe how light shifts toward shorter or longer wavelengths as objects in space (such as stars or galaxies) move closer or farther away from us. ... When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.
can two organisms occupy the same niche in a community? why or why not?
Answer:
no
Explanation:
two organisms cannot occupy the same niche or else they would compete for the role :)
In the thylakoid membranes, what is the main role of the antenna pigment molecules?
a) split water and release oxygen to the reaction-center chlorophyll
b) harvest photons and transfer light energy to the reaction-center chlorophyll
c) synthesize ATP from ADP and Pi
d) concentrate photons within the stroma
Answer: Option B.
harvest photons and transfer light energy to the reaction-center chlorophyll
Explanation:
In the thylakoid membranes,the main role of the antenna pigment molecules is harvest photons and transfer light energy to the reaction-center chlorophyll because the photon of light move until it get to a molecule in the chlorophyll. When it reaches the molecule, it causes an excitation of electrons in the chlorophyll. The energy then present allow it to break free from the chlorophyll atom, which indicate chlorophyll donating an electron and the energy that is absorbed is then converted to heat.
What are possible products of glycolytic, or anaerobic, catabolism?
Answer:
The products of a glycolytic metabolism is lactic acid and the increase of the insulin enzyme at the plasma level.
Explanation:
Lactic acid is the product of the reaction of glucose catalysis in oxygen-deficient states such as in anaerobic activity.
Lactic acid is an acid that can be metabolized by the body, which accumulates in the muscles, and is generated once the physical activity has finished or in the last stages.
Insulin, once generating the rest of the activity, or the cessation of the action, comes into play at the plasma level and increases, in order to neoform new energy reserves (glucose) and thus prepare for the next action.
This hormone has the opposite effect to glucagon.