molecules combine to form cells, cells combine to form tissues, tissues combine to form organs, organs combine to form organ systemsMuscle tissue is composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts. The tissue is highly cellular and is well supplied with blood vessels.
which substance compose the backbone of DNA
Answer:
phosphate and deoxyribose
Explanation:
Answer:
Phosphates and sugars
Explanation:
Protein kinase A (PKA) is: A) activated by covalent binding of cyclic AMP. B) affected by cyclic AMP only under unusual circumstances. C) allosterically activated by cyclic AMP. D) competitively inhibited by cyclic AMP. E) noncompetitively inhibited by cyclic AMP.
Answer:
The correct answer is C.
Explanation:
Protein kinase A (PKA) is one of these proteins for which cAMP is an allosteric activator that binds to the corresponding regulatory center in the enzyme, inducing dissociation of regulatory and catalytic subunits; The latter are thus arranged for the binding of the corresponding substrate proteins, which it phosphorylates at the expense of ATP and consequently modifies their activity. The phosphorylation and activation of glycogen phosphorylase depends on glycogen phosphorylase kinase, the latter enzyme that is a substrate for PKA.
I need help please:((((((
Answer:
C. Under the age of 20
Explanation:
Look at the graph and find what letter the male's bar is larger than the female's. You can see that it's letter B. Then, look at the legend and find what ages lay under letter B. It is C., under the age of 20.
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1. Which level of biological organization, from smallest to largest, is
correct? *
A. Organ System, Organ, Tissue, Cell
B. Cell, Organ, Tissue, Organ System
C. Cell, Tissue, Organ, Organ System
D. Tissue, Cell, Organ, Organ System
Answer:
Cell, Tissue , Organ, Organ System
PLEASE HURRY A mutation occurs when a base in the DNA sequence is replaced by a different base.
Answer: Mutations
Explanation:
A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.
have a good a day
Answer:
If you are asking A BLANK mutation occurs when a base in the DNA sequence is replaced by a different base, the answer is substitution.
Explanation:
I took the test
Plzzzzz help I’ll mark brainliest
Answer:
Im pretty sure its B
Explanation:
Ecology.
The definition of ecology is: the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
This means that it is the study of how organisms interact with each other and their environment.
Not sure if it's right? Let's take a look at the other answers.
Definition of biosphere: the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
Definition of biotic: relating to or resulting from living things, especially in their ecological relations.
Definition of biome: a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra.
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Given what you learned about how influenza changes over time, how could you explain the emergence of drug resistance in bacterial pathogens?
Answer:
Beneficial mutations events can generate resistance to drugs
Explanation:
Bacteria can develop antibiotic resistance through mutations, as well as horizontal transference events, that allow them to reduce/eliminate the effectiveness of drugs used to treat infections. For example, penicillin-resistant strains have been identified in Staphylococcus aureus and Streptococcus pneumoniae. In general, mutations have a negative impact on the fitness of the organism; however, there are cases where mutations increase the fitness of the individual. In consequence, antibiotic resistance may occur by natural selection, where antibiotic-resistant bacteria that exhibit beneficial mutations are selected to survive and perpetuate their genetic material.
The photos below show specialized cells of a plant.
Which function are these cells specialized for performing?
Answer:
Photosynthesis
Explanation:
The green structures in the cell are chloroplasts. They are green because they contain the green pigment chlorophyll. Chlorophyll traps light energy and uses it to produce sugar molecules as food for the cell.
What evidence supports the LAW OF CONSERVATION OF ENERGY?
1. Mechanical energy is converted to chemical energy during photosynthesis
2. Energy is absorbed by chlorophyll and becomes chemical energy during photosynthesis
3. Oxygen is made from the breakdown of carbon dioxide during photosynthesis
4. The sun gives off light energy that is absorbed by plants
The evidence that supports the law of conservation of energy is as follows: mechanical energy is converted to chemical energy during photosynthesis.
LAW OF CONSERVATION OF ENERGY:The law of conservation of energy states that energy can neither be created nor destroyed but is changed from one form to another. This means that energy involved in chemical reactions and natural phenomena is recycled by transformation and doesn't get destroyed. A typical example that obeys this law is photosynthesis, which converts mechanical energy in sugar molecules to chemical energy in ATP.Learn more about law of conservation of energy: https://brainly.com/question/2264339
Answer: The Answer is 3. Oxygen is made from the breakdown of crabon dioxide during photosynthesis.
Explanation: I took the test.
why it is important to reduce friction in moveable joints
Answer:
Smooth cartilage prevents friction as the bones move against one another. in freely moveable joints, the entire joint is enclosed inside a membrane filled with lubricating synovial fluid, which helps to provide extra cushioning against impact.
Why am I smart in some subjects but not others?
Answer:
it goes with your interest
Answer:
The subject you are smart in is the subject you are more interested in but you also would like all subjects and progress great in them you just have to find the right learning space or techniques
Explanation:
I need help please :(
Answer:
The answer willk be option C- Under the age of 20
Compare and contrast evaporation and condensation.
Answer:
By definition, evaporation is a process where water changes into vapour. Condensation is the opposite process where water vapour is converted to tiny droplets of water. Evaporation occurs before a liquid reaches its boiling point. Condensation is a phase change regardless of the temperature.
Match the terms on the left to the correct definitions *
5 points
Part of a A molecule
chromosome that makes
that is passed
up a
from parent to component of
offspring a ribosome
A biomolecule
that is made
of one or more
amino acids
and that
performs a
specific
function
A nucleotide Guanine,
polymer that cytosine,
uses uracil,
deoxyribose adenine, or
sugar thymine
protein
gene
DNA
RNA
Nitrogen
base
554Answer:544
gfnknmfdjkfrgfnfewnm f,m dsmnfdl;skgfkldskmlglkmrfvdsf
redewn d dnlsfnmddmffmf,dsfdfExplanation:er44dfdsfdsf
fdnjifljdkfdjkldfkldfkjlfdfdskfdknflkndlkfldnsfn
In the Colorado mountains, three species of bumble bees live in the same habitat. Each species has a different proboscis length: short, medium, or long. Each visits nectar-producing plants that match its proboscis length. This situation suggests that natural selection in the three bumble bee species has resulted in
Answer:
resource partitioning
Explanation:
Resource partitioning can be defined as the division of limited resources that enables species to avoid competition when they live in the same habitat. Moreover, interspecific competition is defined as the competition for limited resources among individuals of different species. In a given environment, species can be competing for essentially the same limiting resources. In the case of the bumblebees, the competence is reflected by differences based on the length of the proboscis (competence for the food), thereby resource partitioning enables species to coexist with one another.
PLEASE HELP ASAP WILL MARK BRAINLIEST!
-
list five different system interactions for the topic of acid rain
Answer:
1. Effects of Acid Rain on Fish and Wildlife
The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.
2. Effects of Acid Rain on Plants and Trees
Dead or dying trees are a common sight in areas affected by acid rain. Acid rain leaches aluminum from the soil. That aluminum may be harmful to plants as well as animals. Acid rain also removes minerals and nutrients from the soil that trees need to grow.
3. Buffering Capacity
Many forests, streams, and lakes that experience acid rain don’t suffer effects because the soil in those areas can buffer the acid rain by neutralizing the acidity in the rainwater flowing through it. The soil becomes thin because of this and lacks the ability to adequately neutralize the acid in the rain water. As a result, these areas are particularly vulnerable and the acid and aluminum can accumulate in the soil, streams, or lakes.
4. Episodic Acidification
Melting snow and heavy rain downpours can result in what is known as episodic acidification. This can result in short-term stress on the ecosystem where a variety of organisms or species may be injured or killed.
5. Nitrogen Pollution
It’s not just the acidity of acid rain that can cause problems. Acid rain also contains nitrogen, and this can have an impact on some ecosystems. For example, nitrogen pollution in our coastal waters is partially responsible for declining fish and shellfish populations in some areas. In addition to agriculture and wastewater, much of the nitrogen produced by human activity that reaches coastal waters comes from the atmosphere.
Explanation:
Not sure if this is what the question was asking for.
Acid rain is defined as rain or any other kind of precipitation that is particularly acidic, including high quantities of hydrogen ions. Acid rain has a pH lower than drinking water, ranging from 4-5 on average.
What are the different system interactions for acid rain ?1. Acid Rain's Impact on Fish and Wildlife
Acid rain's biological consequences are most visible in aquatic areas such as streams, lakes, and marshes, where it can affect fish and other species. Acidic rain water can drain aluminum from soil clay particles as it passes through the soil and into streams and lakes.
2. Acid Rain's Effects on Plants and Trees
In acid rain-affected locations, dead or dying trees are prevalent. Aluminum is leached from the soil by acid rain. Aluminum may be damaging to both plants and animals. Acid rain also depletes the soil of minerals and nutrients required by trees to develop.
3. Capacity for Buffering
Many woods, streams, and lakes that experience acid rain remain unaffected because the soil in such locations can buffer the acidity in the precipitation flowing through it. As a result, the soil becomes thin and unable to effectively neutralize the acid in the rain water. As a result, these locations are more sensitive, and the acid and aluminum can build up in the soil, streams, and lakes.
4. Acidification on Occasional Basis
Melting snow and strong rain can cause a condition known as episodic acidification. This can cause short-term stress in the environment, injuring or killing a range of creatures or species.
5. Nitrogen Pollution
Not only may the acidity of acid rain cause difficulties. Acid rain includes nitrogen, which can have an influence on some ecosystems. Nitrogen contamination in our coastal waterways, for example, is partly to blame for dwindling fish and shellfish populations in some locations. Aside from agriculture and sewerage, much of the nitrogen created by human activities that reaches coastal waterways originates in the atmosphere.
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Type the correct answer in the box.
Write the full form of the abbreviation.
The full form of BUN is what
Answer:
Blood Urea Nitrogen
Explanation:
I hope this helps :)
List the layers of the atmosphere
Answer:
troposphere
stratosphere
mesosphere
thermosphere
exosphere
Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere, and Exosphere
Explanation:
to check temperature in large or thick foods, you should:
-an infrared thermometer
-a bimetallic stemmed thermometer
-a thermocouple thermometer
-a pop up thermometer
Answer: A bimetallic stemmed thermometer:
Explanation:
Which best describes the outcome of DNA replication?
1) The new DNA molecule is identical to the original DNA.
2) The new DNA molecule is synthesized from amino acids.
3) The new DNA molecule has a different number of codons.
4) The new DNA molecule is single-stranded.
Mutations caused by errors during translation most likely cause which of the
following effects?
A. Death of the organism
B. No effect on phenotype
C. Genetic diseases in the individual
D. The effects can be beneficial, harmful, or neutral.
ANSWER:
The effects can be beneficial, harmful, or neutral.
Explanation:
Choose the following true statement:
a)When cells are finished with their tasks, they work, they die, and are replaced by new cells
b)Once a cell is made, the body will not regenerate new ones.
c)There are limited amount of cells the body can produce
d)All cells will continuously multiply forever.
Answer:
D
Explanation:
because. when one cell dies another is replaced so it gos on forever and ever
What is the role of DNA polymerase in DNA replication?
A. It ties the chunks of DNA together.
B. It creates the replication fork.
C. It checks the DNA for errors.
D. It breaks apart the bases.
Answer: it checks the DNA for errors
Explanation:
Just took test
Answer:
A. ties chunks of dna together, took the test
Explanation:
Part A
Scientific inquiry consists of a(n)
approach to resolving a question.
View Available Hint(s)
linear
fail-safe
implausible
stepwise
Answer:
The correct Hint is D) Stepwise
Explanation:
Scientific inquiry usually involves a process through which scientists try to resolve tough problems.
Many people have proposed various steps to the methodology of scientific inquiry. There is one that has 3 steps, one that has 5 steps, and another that has 7 steps.
The 7 steps of scientific inquiry are given below:
Defining the Question. Stating the Research. Postulating the Hypothesis. Carrying our the Experiment. Making Observations. Reaching Results/Conclusion.Communicate. Present/share your results. Replicate.Cheers
What macromolecule is made from carbon dioxide?
Answer:
Plants and algae convert carbon dioxide to organic matter through the process of photosynthesis, the energy of light. Carbon is present in all life: All living things contain carbon in some form, and carbon is the primary component of macromolecules, including proteins, lipids, nucleic acids, and carbohydrates.
All life has some form of carbon, and this element is the main building block of macromolecules like proteins, lipids, nucleic acids, and carbohydrates.
What is macromolecule?The general formula for carbohydrates is Cn (H2O)n, and they are biological macromolecules consisting of carbon, hydrogen, and oxygen. Saccharides are the precursors to all carbs. These big molecules generate energy that powers the body's physiological processes.
They are made up of thousands of atoms that are covalently bound. The polymerization of numerous smaller molecules known as monomers produces large molecules. Large non-polymeric molecules like lipids and biopolymers like nucleic acids, proteins, and carbohydrates are the most prevalent macromolecules in biochemistry.
Therefore, through the process of photosynthesis, which uses light energy, plants and algae transform carbon dioxide into organic matter.
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what is the last step in scientific method
Answer:
Step 1- Question.
Step 2-Research.
Step 3-Hypothesis.
Step 4-Experiment.
Step 5-Observations.
Step 6-Results/Conclusion.
Step 7- Communicate. Present/share your results. Replicate.
Answer:
1. Ask a question
2. Hypothesis
3. Prediction
4. Experiment
5. Analyse Data
6. Conclustion
Explanation:
The last step in a scientific method is the Conclusion. Edgenuity 2020. Just took the assignment.
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Answer:
answer is (c)
Explanation:
.. ......
HELP PLEASEEE
Once a population reaches its carrying capacity, the growth rates
are able to return to what they were before resources were
limited.
SELECT AN ANSWER
True
False
Answer:
T :)
Explanation:
Whats the flow of matter in DESSERT food web?? HELP
The Sahara desert food chain begins with the plants. There are many kinds of plants in the desert. They are the Date Palms, Cacti, Thorn Acacia, Creosote Bush, Sage Brush, Desert Milkweed, Desert Willow, and Desert Tobacco. The plants are producers as they are the source of food for many herbivores.
If plant cells have both chloroplast and mitochondrial, What will likely happen to the glucose and oxygen once they are produced in photosynthesis?
