hello :]
If the Thymus gland shrank, and stopped producing thymosin, what would happen is that we would loose a few of our "T" cells, which are detrimental to the immune system. Eventually, we can end up with too few T cells to protect ourselves – this is called immunodeficiency – or we can produce T cells that attack our own body – which is called autoimmunity.
True or false? Water molecules move into and out of cells through the cell membrane by active transport.
Answer:
True,
Explanation:
Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. uptake of ions from soil water by root hair cells in plants.
I hope this helps.
In your own words, describe the theory of evolution
All species started from one thing before branching off and changing their genetics, slowly, as time progressed; this is the process of evolving. Most times it has an effect on physical characteristics as well.
49. Shoot the Plasma Cell Membrane. The cell membrane is the ___________________________ of all cells. It regulates what ____________________and _____________________ the cell to help maintain homeostasis. The cell membrane is _____________________________ which means it allows substances to pass through, but not others.
Answer:
The cell membrane is one of the great multi-taskers of biology. It provides structure for the cell, protects cytosolic contents from the environment, and allows cells to act as specialized units. A membrane is the cell’s interface with the rest of the world - it’s gatekeeper, if you will. This phospholipid bilayer determines what molecules can move into or out of the cell, and so is in large part responsible for maintaining the delicate homeostasis of each cell.
Explanation:
Cell membranes are semipermeable, meaning they have control over what molecules can or cannot pass through. Some molecules can just drift in and out, others require special structures to get in and out of a cell, while some molecules even need an energy boost to get across a cell membrane. Each cell’s membrane contains the right mix of these structures to help that cell keep its internal environment just right.
im a bit confused on this question so anyone pls help
your answer is b mutations
Pesticides are often used by farmers to kill or control certain forms of animal life that are harming the crops. Some of the chemicals used can be biologically magnified and affect endangered species. One of the best laws we have to control pesticide use in the environment is the Endangered Species Act.
Which is the most likely result of enacting legislation to restrict the use of pesticides?
A.
Increasing the mutation rate in endangered species
B.
Reducing biodiversity in various ecosystems
C.
Decreasing the space and resources available
D.
Causing pesticides to become more toxic to insects
Answer:yo
Explanation:
I had this lab where I had to blow bubbles and measure their diameter. It in wasn’t a controlled environment at all. It was in an enclosed room but that’s pretty much it. What are some factors that could’ve led to experimental error or messed with the bubble sizes?
Answer:
if there is wind - can make it go in different direction
amount of solution
how hard you blew
Explanation:
50 points! I'm so lost, I need help ASAP.
Answer:
1. Protein Channel pumps ions and other substance through the cell membrane
2. Hydrophilic - Packed love water
3. Hyphobic - Hate water
4. Phospolipid bilayer - the cell membrane
Explanation:
One type of molecule (or a few molecules that are closely related) is all that a channel will accept for transit.
What role of channel protein and membrane component?A channel protein is an illustration of a transport protein; it serves as a pore in the membrane to permit water molecules or small ions to move through quickly.
Water may quickly diffuse through the membrane thanks to aquaporins, which are proteins that function as water channels. Ion channel proteins enable unrestricted ion transport across the membrane.
Channel proteins span the membrane, forming hydrophilic tunnels that let their target molecules diffusely pass through.
For instance, channel proteins enable the passage of bigger molecules like glucose as well as ions like sodium, potassium, and calcium through the membrane.
Therefore, Large or charged molecules can pass across the membrane to channel proteins.
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The global causes that drive those processes in Box 2
Global Causes
2
Sun
Ocean Currents
Gravity
Answer:Earth is constantly changing as energy flows through the system. Geologic, fossil, and ice records provide evidence of significant changes throughout Earth's history. These changes are always associated with changes in the flow of energy through the Earth system. Both living and non- living processes have contributed to this change.
Explanation:that will help you
Urgentttt
Which of these choices is the main threat to the survival of polar bears?
A. Climate change
B. Illegal poaching
C. Demand for pelts
D. Loss of shelter
Answer:
A
Explanation:
Answer:
A
Explanation:
Hope this helps
In order to use this DNA technique, the research team first collected DNA from 400 plant species that grow on the African savanna and entered the sequence data into a database. Explain why this was a necessary first step.
Answer:
a. It is important to isolate the undigested plant material since the digested plant material cannot be used since the cell wall will be broken and the enzymes like DNases and other digestive enzymes will break down the organelle membranes and the DNA will be degraded.
If it is not isolated properly the other contaminants and the other enzymes, proteins and debris will interfere with the quality of the DNA. The isolation of undigested ensures that intact DNA can be isolated with the minimum amount of unwanted contaminants.
b. Metabarcoding is the technique through which several DNA/RNA samples are isolated and sequenced from a small or section of the sequence from a common sample to identify the different species present. This is done by isolation, amplification (PCR), and sequencing using a sequencer by comparing to the database. The database is formed by sequencing the known species in the area and then comparing the sequence data obtained from the sample to the database and when it matches the database sequence we can conclude that this species is present in the sample. Hence DNA from 400 plant species that grow on the African savanna and entry of the sequence data into a database was important.
Explanation:
Collecting DNA from 400 plant species on the African savanna and entering their sequence data into a database was crucial as an initial step to enable comprehensive genetic analysis.
An important first step was collecting DNA samples from 400 different plant species found on the African savanna and entering their genetic sequences into a database. This vast genomic database serves as a starting point for subsequent comparative study.
Researchers can use this information to identify the genes that are in charge of features essential for agricultural and pharmaceutical uses, such as disease tolerance, drought resistance, and medicinal qualities. This DNA database also advances our knowledge of the complex biodiversity of the savanna, aiding in conservation efforts and more comprehensive ecological research.
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the two strands of dna are held together in a double helix by ______ bonds.
Answer:
Hydrogen bonds
Explanation:
it should be hydrogen bonds, correct me if I'm wrong
Answer:
the two strands of dna are held together in a double helix by hydrogen bonds
Explanation:
rna processing converts the rna transcript into _____.
Answer:
It converts RNA transcript into mRNA!
Explanation:
If you follow the steps of the Protein Synthesis, this will make sense (this is just a brief overview of it). So, you want to go from DNA --> RNA --> Protein. First, we start out with DNA that is inside the nucleus. From there, the DNA gets transcribed (transcription) into RNA (still in the nucleus). Next, the RNA gets spliced and synthesized into mRNA. mRNA gets exported from inside the nucleus to the outside of it through a nuclear pore and is now residing in the cytoplasm. Then, it gets translated (translation) into an amino acid chain. Finally, the a.a. chain will be synthesized into a protein.
cell membranes contain a central bilayer formed by:
Answer:
Lipids
Explanation:
The cell membranes are primarily made up of two layers. The central bilayer is formed by the lipids in the cell membrane. Lipids surround the cytoplasm of cells to help the cell control substances that go in and out of the cell. This helps to protect the cell from a harmful substance that may potentially enter the cell.
(Some information from "StaceeLichtenstein" on Brainly)
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
How do I decrease the production of human growth hormone?
Answer:
1.Lose body fat. ...
2.Fast intermittently. ...
3.Try an arginine supplement. ...
4.Reduce your sugar intake. ...
5.Don't eat a lot before bedtime. ...
6.Take a GABA supplement. ...
7.Exercise at a high intensity. ...
8.Take beta-alanine and/or a sports drink around your workouts.
Explanation:
Which of the following terms describes the cell membrane?
Answer:
The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable.
Explanation:
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what usually happens to most of the energy that is not passed to the next trophic level or used tp carry out cellular processes in an organism
Which step should you take before you begin a scientific investigation
Answer:
Before you begin to plan a scientific investigation you first a Perform background research to learn what is already known about the question you are trying to answer. You Create the data that will support your hypothesis.
Explanation:
Step 1: Record your observations.
These should be objective rather than subjective observations. In other words, the findings should be able to be independently verified by other scientists. Subjective observations based on personal views and opinions are not considered scientific. Here's an example of an objective statement: The temperature in this room is 58 degrees Fahrenheit. Here's an example of a subjective statement: This room has a pleasant temperature.
Making objective observations is the first stage in the Scientific Method. These assertions are based on specific events that have occurred and can be verified as true or incorrect by others.
Step 2: Come up with a hypothesis.
Our observations provide information about the past or present. We want to be able to forecast future events as scientists. As a result, we must rely on our reasoning abilities.
Scientists use historical data to establish a general principle or explanation that may be used to anticipate future events. A hypothesis is the term for the general principle. Inductive reasoning is the type of reasoning involved (deriving a generalization from specific details).
Step 3: Make an educated guess.
Step 2 resulted in a tentative hypothesis that may or may not be correct. How will we know whether our hypothesis is correct?
Our theory should be broad in scope and apply consistently over time and space. Scientists are rarely able to test every possible scenario in which a hypothesis could be valid. Consider the following hypothesis: A nucleus can be found in all plant cells. We can't test this idea by looking at every living plant and every plant that has ever lived. Instead, we use deductive reasoning to make a prediction. We can make the following prediction based on our hypothesis: Each cell in a blade of grass will contain a nucleus if I inspect it.
4. Carry out an experiment.
To gather information, we once again rely on our sensory sense. Based on our prediction, we devise an experiment.
The following is a possible scenario for our experiment: A total of 1000 patients aged 50 to 70 will be randomly allocated to one of two 500-person groups. The experimental group will receive Celebra four times daily, whereas the control group will receive a starch placebo four times daily. Patients will not be able to tell if their tablets are Celebra or placebo. The medications would be taken for two months by the patients. Medical exams will be performed at the end of the two-month period to see if the flexibility of the arms and fingers has changed.
Step 5. Analyze the results of the experiment.
The experiment produced the following results: 350 of the 500 people who took Celebra reported diminished arthritis as the end of the period. 65 of the 500 people who took the placebo reported improvement.
Step 6. Draw a conclusion.
From our analysis of the experiment, we have two possible outcomes: the results agree with the prediction or they disagree with the prediction. In our case, we can reject our prediction of no effect of Celebra. Because the prediction is wrong, we must also reject the hypothesis it was based on.
Step 7. Report your results.
Scientists publish their findings in scientific journals and books, in talks at national and international meetings and in seminars at colleges and universities. Disseminating results is an essential part of the scientific method. It allows other people to verify your results, develop new tests of your hypothesis or apply the knowledge you have gained to solve other problems.
True or False: Blood contains red blood cells, white blood cells, platelets, and plasma.
Answer:
TRUE
Explanation: is correct
The cephalic veins are used for which of the following?
Answer:
a. As an insertion point for I.V. lines
Explanation: is incredibly correct
sometimes I brush my teeth with peanut butter instead of toothpaste mmm
65 POINTS HURRY PLEASE
Cellular Respiration
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U3_ Lab_CellularRespiration_Alice_Jones.doc).
Introduction
What was the purpose of the experiment?
Type your answer here:
How do indicators help to observe things that are too small to see?
Type your answer here:
Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools and/or materials did you use to collect your data?
Type your answer here:
Describe the procedure that you followed to conduct your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about whether or not yeast and plant cells produce carbon dioxide during cellular respiration? Write an evidence-based claim.
Type your answer here:
Make a model that shows how glucose is rearranged through cellular respiration to form new molecules. Include labels. Identify the number of each type of atom before and after the reaction takes place. Describe how energy is released in cellular respiration.
Type your answer here:
Answer:
Here is the first answer
Key Takeaways: Experiments
An experiment is a procedure designed to test a hypothesis as part of the scientific method.
The two key variables in any experiment are the independent and dependent variables.
Three key types of experiments are controlled experiments, field experiments, and natural experiments.
Microscope is the second answer
third answer is this Responsible Science is a comprehensive review of factors that influence the integrity of the research process. Volume I examines reports on the incidence of misconduct in science and reviews institutional and governmental efforts to handle cases of misconduct.
The result of a two-year study by a panel of experts convened by the National Academy of Sciences, this book critically analyzes the impact of today's research environment on the traditional checks and balances that foster integrity in science.
Responsible Science is a provocative examination of the role of educational efforts; research guidelines; and the contributions of individual scientists, mentors, and institutional officials in encouraging responsible research practices.
4th is this Case Studies, Checklists, Interviews, Observation sometimes, and Surveys or Questionnaires
5th is this When conducting an experiment, it is important to follow the seven basic steps of the scientific method: 1 Ask a question or find a research problem to solve. Determine what you will test to answer this question. Review current knowledge on the subject. Design an experiment.
And is all I could find for u
Hope this helps
Answer:
What was the purpose of the experiment?
The purpose of this experiment was to harvest the chemical energy stored in glucose.
How do indicators help to observe things that are too small to see?
Indicators helps see the end point of the valution during a titration by causing color change.
Write a hypothesis based on observations and scientific principles.
An example based on observations and scientific principles would be deaf children. Deaf children whose parents are deaf will accquire language faster than deaf children whose parents aren't deaf. It specifies the direction of hypothesis because a group is faster than the other.
Explanation:
which step of scientific inquiry involves testing the hypothesis and collecting data?
The answer for this question would be letter A. Experimentation takes in by experimenting with your hypothesis, knowing what will happen and then gathering data from the outcome of the experiment. For your data, you create your analysis of what had happened then conclude.
Which of the following causes the myosin head to become cocked, or energized?
Answer:
a. ATP adenosine triphosphate
Explanation: correct/post protected.
A bacterium has just been introduced into a cup of coffee that contains copious amounts of sucrose but no other types of sugar. In this environment, what form of gene metabolism would be seen in the bacterium
Answer:
sucrose
Explanation:
which organelle gives the plant cell strength and protection?
Answer:
cell wall
Explanation:
Based on the productivity data provided to you, as well as data you collected on algal standing crops and number of catfish at Bat Rocks and Cess, construct an explanation based on evidence for how sunlight regulates the productivity of algae, the number of catfish in a pool, and the resulting standing crop of each. (exploring biomass pyramids interactive simulation)
The biomass of producer is higher than the population of catfish.
Sunlight regulates the productivity of algae by allowing the algae to make their own food through the process of photosynthesis. This algae better the quality of water, provide oxygen for the aquatic organism and food for many herbivore aquatic organism.
Algae needs sunlight, carbondioxide and water for the process of photosynthesis. Catfish population in the pool increases as the biomass of algae increases because more food is available for the catfish which allows them to grow and increase their population.
In pyramid or trophic levels, the biomass of algae and other plants are the largest which is present at the bottom whereas as we go in the trophic level, population of organisms increases so we can conclude that biomass of producer is higher than the population of catfish.
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Crossing over occurs when
Answer: there is an exchange of chromosome segments between homologous chromosomes during prophase 1
Explanation:
Homologous chromosomes are paired up in their tetrads. Then part of each homologous pair breaks at the same point and reattaches to the other. This results in genetic variation.
Answer: The answer is B. homologous chromosomes join together to form tetrads during prophase I.
Explanation: I got it right on the test.
Match each part of the heart with the correct label.
Answer:
1. Aorta
2. Pulmonary Artery (left)
3. Pulmonary Veins (left)
4. Left Atrium
5. Bicuspid Valve
6. Aortic Semi-Lunar Valve (one of the av valves)
7. Left Ventricle
8. Right Ventricle
9. Tricuspid Valve (one of the av valves)
10. Right Atrium
11. Pulmonary Semi-Lunar Valve
12. Superior Vena Cava
Explanation: is correct
A developer proposes building a new geothermal power plant in a city located on the
interior of the North American Plate to provide electricity for a new housing development.
Make a claim using evidence that supports or opposes this proposal.
Based solely on scientific evidence, we can make a claim that supports the idea of a geothermal power plant due to its stability, environmental safety, and high potential.
A geothermal power plant involves hot water being pulled from underground reservoirs located near thermal vents. Once the water reaches the surface, the immediate decrease in pressure causes the water to become steam, this steam, in turn, causes a turbine to spin, which generates an electric current through a generator.
This source of energy is environmentally safe considering its waste product produced is water vapor, making it a great option for modern-day energy requirements. This source of energy also has huge future potential and is very stable due to its being a renewable resource.
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In the paragraph below, select the words that correctly complete each sentence.
to obtain energy from food. This process begins in the
All plants and animals use the process of Choose...
Choose..
where glucose is broken down into smaller molecules to produce energy. The second part of the process takes place in the
Choose
as a waste product. In addition, the
Choose...
Here the molecules are broken down further and produce
Choose...
in order to function.
second part of the process requires
Answer:
nono
Explanation:
What process should be in the bubble for number 1?
O photosynthesis
O decomposition
O combustion
O feeding
Answer:
Explanation:
O photosynthesis
