Answer: Natural selection allows the survival of organisms with beneficial traits.
Explanation:
Natural selection can be defined as the differential survival and reproduction of the members of the population that have beneficial phenotypic traits to survive in unfavorable environment. These organisms reproduce and pass on their traits to the next generation such species does not extinct in future.
The natural selection allows evolution of species with the adaptation of new traits so as to allow the survival of the organism.
a baker has created a new strain of yeast which contains no cytochrome c gene and no cytochrome c protein. this will affect what the yeast strain can do to obtain energy. what will this yeast strain do more of compared to a normal strain
A baker has created a new strain of yeast which contains no cytochrome c gene and no cytochrome c protein. this will affect what the yeast strain can do to obtain energy. what will this yeast strain do more of compared to a normal strain
Will this new strain of yeast obtain more or less free energy from glucose in its growing medium?
Answer: Less because cytochrome c is key to the electron transport chain.
Explanation:
The Cytochrome c is an essential component of the electron transport chain. Without this there will be no oxidation and reduction of iron atom will take place which could convert the ferrous ions to ferric ions. Thus the entire process of electron transport chain and energy production in the form of ATP will be compromised. So, there will be no production of energy in the anaerobic fermentation by yeast.
Answer: C. Fermentation
Explanation: The yeast strain will do more fermentation because the cytochrome c protein is what gives the yeast energy and ATP. Without this gene, the yeast strain will need to find a different way to make energy, like fermentation.
Which of the following is the best way to show the greenhouse effect?
A. Drive more often
B. Stop using electricity
C. Use energy sources other than fossil fuels
D. Increase the amount of oxygen released by plants
Answer:
A. Drive more often
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You are conducting a twin study to estimate the heritability of a particular trait and have found that monozygotic twins have a concordance of 75%. Using ONLY this information, does this trait show high, low, or unknown heritability? Write no more than two sentences to justify your conclusion, and/or specify how to use additional information to determine heritability. ITRE
Answer:
The correct answer is "high heritability".
Explanation:
Concordance, is a term used in genetics to describe the probability that one of the twins have certain trait if his brother certainly has it. A high percentage of concordance, such as 75%, is translated into high heritability since monozygotic twins have identical genomic sequences. Additional information to determine heritability will be to study the exposure to similar environmental conditions, since environment can also affect the presence of certain traits.
The only taxonomic category in which microevolution can occur is the ________ level.a. domain.b. species.c. genus.d. kingdom.e. family.f. population.
Answer: genus
Explanation:
The answer to the question is genus. The genus is where microevolution occurs or happens. The domain, species, kingdom, family, or population are not the taxonomic category where microevolution occurs. The answer to the question is genus.
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The study of a living being is called biology.
The correct answer is B.
The arrangement of a species in their respective hierarchy level is called taxonomy. The different levels in which the group of species is placed are called hierarchy levels.
The small or negligible changes in an individual are called microevolution. These changes have hardly any impact on the physical and chemical behavior of the species.
Hence, the correct answer is B that is specified.
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Although iodine is a trace element, its deficiency may result in metabolic
problems such as goiter. *
True
O False
answer is no. 2
false.
n
what are the normal breath sounds?
Answer:release and relex
Explanation:
Answer:
Using a stethoscope, the doctor may hear normal breathing sounds, decreased or absent breath sounds, and abnormal breath sounds.
Absent or decreased sounds can mean:
Air or fluid in or around the lungs (such as pneumonia, heart failure, and pleural effusion)Increased thickness of the chest wallOver-inflation of a part of the lungs (emphysema can cause this)Reduced airflow to part of the lungsIn order for nutrients to enter the cell, those nutrients must pass through what cell structure?
O the nucleus
O the mitochondria
O the cell membrane
O ribosomes
Answer:
The cell membrane
Explanation:
This is the phospholipid bilayer that everything that wants to come into the cell has to move throught. It is also selectively permeable.
A student conducts an experiment with a dog and a statue of a dog. The student provides a slice of bread to both the subjects every two hours. Only the dog eats the bread.
Which characteristic of life is best demonstrated by this experiment?
Answer:
ability to obtain nutrients
ability to grow
ability to respond to the environment
ability to reproduceExplanation:
describe how ATP is built in the mitochondrial membrane?
In the electron transport chain protons are pumped in the intermembranous space, an electrochemical gradient appears. Protons flow back to the mitochondrial matrix through the ATP-synthase providing the energy necessary for ATP synthesis.
it is a thin layer around the cell but not a rigid one. it has openings to allow transportation and exchange of materials,
How does the nucleotide sequence determine the protein structure and function of a cell?
Answer:
The four bases A, T, C and G make up the genetic code. The base sequence determines amino acid sequence in protein. Messenger RNA (mRNA) is a molecule which carries a copy of the code from the DNA, in the nucleus, to a ribosome, where the protein is assembled from amino acids.
Explanation:
Which of the following statements about radioactive decay is true? (1 point)
ORadioactive decay is the rate at which new atoms form.
O During radioactive decay, atoms break down, releasing particles or energy.
OThe rate of decay of a radioactive element cannot be approximated.
OThe number of radioactive atoms in a sample will always remain constant.
Answer:
B) During radioactive decay, atoms break down, releasing particles or energy.
Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?
-A hypothesis tests many variables at once, which can lead to new hypotheses.
-Multiple related hypotheses will become theories before a single hypothesis does.
-Each scientist has used different wording when developing his or her hypothesis.
-Each experiment reveals a different piece of information that is needed to develop the theory.
Answer:
Each experiment reveals a different piece of information that is needed to develop the theory.
Explanation:
someone told me
Answer:
is d
Explanation:
cuz i did the test
On a warm summer day, a deer is searching for something to drink. The deer is most likely responding to which kind of stimulus? the external stimulus of heat the internal stimulus of heat the internal stimulus of thirst the external stimulus of thirst
your Answer is: the external stimulus of thirst
Explanation:
A stimulus is an external agent which is likely to develop a response in an organism. According to the given situation, the external heat generated due to the warm summer day will likely to produce thirst response in deer because of the evaporation of body water by the surrounding heat. you can brainly me if you want.
Deer is most likely responding to internal stimulus of thirst.
Thirst is a component of the regulatory mechanism that maintain body fluid homeostasis and ultimately is essential for survival.What is a Internal stimulus?It is based upon something that someone feel such as hunger, thirst, love or painIt comes from within the person.What is stimulus?A thing or event that evokes a specific functional reaction in a organ or tissue.
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Are cells and DNA the same thing?
Answer:
no
Explanation:
you have DNA in your cells its all one thing together but not the same i believe
What is a generation in genetics?
Answer:
"The parental generation refers to the first set of parents crossed. ... Parental generation is the first generation involving two individuals that are mated to foresee or analyze the genotypes of their offspring. Their probable set of offspring would constitute the so-called first filial generation (or F1 generation)."
Explanation:
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I don't know how to conclude my lab report on exploring cells.
Answer:
Explanation: This concludes that cells are (whatever you were trying to prove)
What is the definition of cellular respiration? (1 point)
o the process of using the chemical energy from food and oxygen molecules to power life processes
the process of using the chemical energy from hydrogen and oxygen molecules to power life processes
o the process of capturing the sun's energy, converting it into oxygen, and releasing it into the atmosphere
the process of capturing the sun's energy, converting it into sugar, and storing it in tissues
Answer:
The process of using the chemical energy from food and oxygen molecules to power life processes
Explanation:
In cellular respiration, the organisms combine with and use oxygen and molecules from food to divert thre chemicla energy into life-sustaining processes.
Cellular respiration is the process by which organisms use chemical energy from food and oxygen molecules to power the basic life processes. Thus, the correct option is A.
What is Cellular respiration?
Cellular respiration is the process by which cells in living organisms break down sugar (carbohydrates) and turn it into energy in the form of ATP. This energy is later used to perform work at the cellular level. The purpose of cellular respiration is providing cells with the energy they need to function.
Cellular respiration is a series of chemical reactions to produce ATP. The main stages of cellular respiration include: glycolysis, pyruvate oxidation, citric acid cycle or Krebs cycle, and oxidative phosphorylation.
An example of cellular respiration in plants is the photosynthesis which is used to obtain the glucose needed for cellular respiration. This means that plants can use the light energy they acquire from the sun to yield glucose and oxygen. This glucose is converted to pyruvate by glycolysis.
Therefore, the correct option is A.
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Origin and Expansion of the Universe Lab Report
Introduction
Scientists have established a timeline of events after the Big Bang, based on astronomical observations and our understanding of the physical laws of the universe, such as gravity and the speed of light. In this lab activity, you will gather evidence to support the Big Bang theory.
Problem:
How can models demonstrate theories of our expanding universe?
Hypothesis:
Review the virtual lab demonstration in the lesson and stop the video when prompted to formulate a hypothesis. Hypothesize (or predict) what will happen to the distances between the labeled circles when you blow up the balloon ¼ full, ½ full, and ¾ full. Remember to include independent and dependent variables in your hypothesis.
The carbon dioxide represents how galaxies will spread out.
Materials:
Watch the virtual lab demonstration video within the lesson. No additional materials are needed.
Variables:
For this investigation:
List the independent variable(s):
List the dependent variable(s):
List the controlled variable(s):
Procedures:
1. Watch the virtual lab demonstration video within the lesson and record your observations in Table 1.
2. Using your expanding universe data from Table 1, construct a line graph using the volume of the below on the X axis and the distance between points on the Y axis. Be sure to include units and add titles to the graphs. Refer to the graph example and graphing tutorial in the lesson if needed.
3. Complete the Questions and Conclusion section of the lab report.
Data and Observations:
Table 1: Expanding Universe Observations
Galaxies Distance: Uninflated balloon (centimeters)
Distance: ¼ full (centimeters) Distance: ½ full (centimeters) Distance: ¾ full (centimeters)
A to B
A to C
A to D
B to C
B to D
C to D
Construct a line graph using the expanding the universe data from table 1. The volume will be plotted on the x-axis. The distance between the points will be plotted on the y-axis. Be sure to include units and add titles to the graph. Refer to the graph example and graphing tutorial in the lesson if needed.
Place your graph here.
Questions and Conclusion
1. How does the density and distribution of your “stars” change as the balloon expands?
2. How does your expanding balloon model represent an expanding universe?
3. What are some shortcomings of using this model as a replica of universe expansion?
4. How does the model you created help to show that the Steady State theory is inaccurate?
5. Suggest a way that a scientist could create an even more accurate model of universe expansion.
6. What will happen to the gravitational force between stars as the universe continues to expand?
In conclusion, how did your prediction of distances between points compare to your experimental results?
Answer:
this is for number 6
Explanation:As the universe continues to expand, the gravitational force between the stars will decrease the farther apart they become.
Answer:
1. As the balloon begins to expand, the volume will increase resulting in an increase in the density.
2. Each of these dots will represent something similar to a galaxy. When a balloon is inflated, the dot that represents it will begin to move away from the rest since the rubber is stretching the space that is in between them.
Explanation:
I haven't done the rest
What holds our solar system together?
A. Electric currents in the Sun's magnetic field
B. The small objects in the Kuiper Belt that did not combine to form planets
C. Earth's gravity
D. The Sun's gravity
Answer:
d suns gravity
Explanation:
Answer:
D
Explanation:
Without the sun's gravity everything would move around.
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Why do bones, shells, and teeth make up most of the fossils that have been found so far?
because bones, shells, and teeth are easier to find
because most organisms have bones, shells, and teeth
because bacteria break down bones, shells, and teeth the fastest
because bones, shells, and teeth decay slower than other body parts
Answer:
the last one
Explanation:
For an organism to become a fossil, it must not decompose or be eaten. ... When an organism is buried quickly, there is less decay and the better the chance for it to be preserved. The hard parts of organisms, such as bones, shells, and teeth have a better chance of becoming fossils than do softer parts.
Which of the following is a distinguishing feature of prokaryotes compared with eukaryotes?A. The absence of membrane bound organelle in prokaryotic cells.B. Smaller and less complicated eukaryotic cellsC. The presence of ribosomes in eukruotic cells onlyD. The method of nutrition
During condensation, water molecules
Answer:
Fall. Ex it Rained today.
Answer: In condensation, a gas (like water vapor) changes state to become a liquid (water). As water molecules in the air cool and slow down, their attractions overcome their speed and they join together, forming liquid water.
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discuss the advantage of genetic engineering and biotechnology
Answer:
List of the Advantages of Genetic Engineering 1. Genetic engineering allows us to achieve a faster growth rate. Plants and animals that receive genetic engineering through biotechnology can mature with greater speed than they would if the process proceeded naturally.
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why does the transfer of energy stop?
Answer:
Energy transfer will stop when both objects reach equilibrium
Explanation:
Im guessing you are refering to organism energy for when they consume each other. There is not enough energy left for the organisms to consume. When an organism is eaten, the organism that ate it only get 10% of the energy that the other organism had, therefore after this process happens over and over again there is not enough energy left to even consume.
Explain how the CRISPR method may accidentally cause cancer cells to develop
Answer:
crispr takes out genes and puts new ones in i think
Explanation:
Which type of connective tissue are named areolar tissue
Answer:
Loose connective tissue
Explanation:
Loose connective tissue is a category of connective tissue which includes areolar tissue, reticular tissue, and adipose tissue.
Which of the following aspects of the environmental movement addresses the public’s right to intervene in environmentally damaging activities on private land? a. environmental justice b. environmental sociology c. environmental law d. environmental activism
Answer:
A- Environmental law is the correct answer
Explanation: