Discribe blood cells and give their proper function. what makes difference on red blood cells to other types of cells of human?
Answer:
white blood cells help in the body in this action is to fight against diseases in the body while red blood cells help transport oxygen and nutrients in body
Blood cells and supply their proper feature: The red blood cell's important feature is to carry oxygen from the lungs and supply it during our body. red blood cells additionally transport waste including carbon dioxide returned to our lungs to be exhaled. Red blood cells can convey oxygen because of a protein known as hemoglobin.
How are human red blood cells exclusive from all different human cells?Red blood cells are microscopic and feature the shape of a flat disk or doughnut, that is round with an indentation within the middle, however it is not hollow. red blood cells do not have a nucleus like white blood cells, allowing them to change shape and flow for the duration of your body less difficult.
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Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Which of the following mutations could lead to constitutive expression of the genes of the lac operon? A mutation in the lac-Z gene A mutation in the lac-Y gene A mutation in the operator sequence A super repressor mutation Submit Part B Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used. Submit Part C The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. View Available Hint(s) The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. True False
Options for part A are as follows:
A) A mutation in the operator sequence
B) A mutation in the lac-Z gene
C) A mutation in the lac-Y gene
D) A super repressor mutation
Answer:
The correct answer:
Part a - A mutation in the operator sequence
Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part C. true.
Explanation:
part a:
If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.
part b:
The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part c:
RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.
why is night blindness regarded as a non infectious disease
Answer:
Explanation:
stay away from the dark frfr sh1 creepy dog
4. How does a sound wave vibrate?
A scientist isolates a disease-causing particle. Which of the following properties would indicate that the particle is a virus and not a bacterium?
Which of the following does the frog represent? A. Primary producer B. Primary consumer C. Secondary consumer D. Decomposer
Answer:
Primary Consumer
Explanation:
Because it eat directly from the plants, which are primary producers
What are two types of animal waste?
Answer:
Throughout the following segment, the summary of the given question is summarized.
Explanation:
Animal wastes were most typically thought of as excretory products somewhat from living organisms.
The two types of waste are:
Biodegradable:The certain commodity that could be quickly decomposed by moisture or water, oxygen, sunlight, or microbes has been considered biodegradable waste.
Non-biodegradable:Material has always been characterized as such a substance that can't be disassociated via living phenomena as well as being a pollutant.
PLS HELP ASAP!!!! 60 points!
in complete sentences compare in depth each of the following:
Compare their functions
Compare their structures
Compare how they look when they are stained
Compare their counts
If all of your cells have the same complete set of DNA why do different cells in different proteins
Why do we have different cells in our bodies if every cell has the same DNA?
The genome of a cell contains in its DNA sequence the information to make many thousands of different protein and RNA molecules. A cell typically expresses only a fraction of its genes, and the different types of cells in multicellular organisms arise because different sets of genes are expressed.
Every cell in your body was produced through successive rounds of mitosis, starting from the zygote.
a. True
b. False
Answer:
I think that the correct answer is True
Select the best answers from the drop-down menus. Brushing and flossing one’s teeth regularly prevents . It is possible to inherit this disease from one’s parents. Quitting smoking may prevent this disease or disorder of the stomach. A diet rich in fiber can be good for preventing .
Answer:
gingivitis
celiac disease
gastritis
diverticulitis
Explanation:
What is the term used for genetic mutations that may result in neutral or even negative outcomes?(1 point)
A) genetic drift
B) natural selection
C) artificial selection
D) genetic modification
Answer:
Genetic Drift
Explanation:
Evolutionary change can and does occur without natural selection. This usually occurs as a result of genetic drift: genetic mutations that may result in neutral or even negative outcomes.
The term 'GENETIC DRIFT' is used for genetic mutations that may result in neutral or even negative outcomes (Option A).
Genetic drift refers to random fluctuations in the frequency of a given gene variant (i.e. an allele) and different genes in the individuals that form a population.Genetic drift may occur on neutral or negative alleles carried out by the individuals of a population.These random fluctuations cause changes in the allele frequencies, which are fixed when they reach a frequency equal to one (1).In conclusion, the term 'GENETIC DRIFT' is used for genetic mutations that may result in neutral or even negative outcomes (Option A).
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In humans, nearly 80% of proteins are acetylated on their N-terminal residue, a modification known to be recognized by a specific E3 enzyme, which directs the ubiquitylation of the protein for rapid degradation. Does this mean that all of these proteins would be actively degraded at the same time
Answer:
Yes
Explanation:
Yes this means that all of these proteins will be actively degraded and this is due to the high turnover rate which will ensure that their activity will be under tight control.
The acetylation of the N-terminal of the protein, with the Ubiquitylation of the protein by an E3 enzyme, helps in the maintenance of the homeostasis of protein activity.
Chemical Reactions in Life Quick Check
What is photosynthesis? (1 point)
o a chemical reaction plants use to release energy from food
O a chemical reaction plants use to create water
a chemical reaction plants use to create new atoms
o
a chemical reaction plants use to create food
a chemical reaction plants use to create food
Ashton is a crime scene investigator. He ensures that all the evidence gathered at the scene is properly handled and labeled. What is Ashton protecting?
Ashton ensures that the (blank) the documentation of who possesses evidence at all times, is protected by properly handling and labeling evidence.
when it says (blank) it means evidence evidence.
what type of membrane is the visking tubing
Answer: semi-permeable
Explanation: Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.
Answer: semi-permeable
Which of the following is a true statement? Physical property change is always better than chemical property change.
o Physical and chemical propery change can happen at the same time.
Chemical property change is better than physical property change.
Answer:
the second one
Explanation:
Sometimes it can be tricky to know whether or not a chemical reaction has occurred. For example, when you melt ice into water, you can write the process in terms of a chemical reaction. However, the chemical formula on both sides of the reaction is the same. Since the chemical identity of the matter in question is unchanged, this process represents a physical change.
Thus melting point is a physical property. On the other hand, flammability is a chemical property of matter because the only way to know how readily a substance ignites is to burn it. In the chemical reaction for combustion, the reactants and products are different.
none are better, depending on for what
In the late 1980s and early 1990s, the percentage of Icelandic children whose bacterial infections were caused by bacteria resistant to penicillin rose at an alarming rate. After public health officials initiated a campaign to reduce the use of penicillin, resistance dropped off. This observation is consistent with the hypothesis that ________.
Answer:
The correct answer would be - "bacterial populations evolve in response to the selection pressure imposed by antibiotics".
Explanation:
The given information provided in the question about the bacterial infection supports the hypothesis that the bacterial population shows the evolution in response to the selection pressure caused by the antibiotics due to the fact that bacteria increased resistance gradually with time. This resistance towards antibiotics increased the percentage of bacterially infected children in the late 1980s and early 1990s.
In this case, the population of bacteria having resistance genes is selected to evolved selected to increase their offsprings.
DNA __________ joins _______to synthesize a new __________DNA strand
Is hair a good source of criminal evidence, explain your answer?
Answer:
yes
Explanation:
Hair contains DNA of the criminal. DNA is unqiue to everyone, no one is ever simialr in DNA to eachother. So if a hair sample is found, then testing it would provide a great piece of evidence.
Answer:
yes because if the body is unditfied they can always take a hair sample and run it but if it is the killers they run it to see if it has dna strands and then if they find something they will get the suspect in and take a piece of their hair to see if it is the perfect match
Explanation:
Describe how the EMG signal (a voltage) arises from muscle activity
Answer: The EMG signal is a biomedical signal that measures electrical currents generated in muscles during its contraction representing neuromuscular activities. The nervous system always controls the muscle activity (contraction/relaxation). ... EMG signal acquires noise while traveling through different tissues. EMG signals are recorded by placing electrodes close to the muscle groups. When the muscle is activated, the length of the muscle decreases and the muscle, skin and electrodes move with respect to one another. At that time, the electrodes will show some movement artifacts
Explanation:
EMG signals are recorded by positioning electrodes close to the muscle groups. It is the arrangement that helps in the monitoring of EMG signals from muscle activity.
What do you mean by EMG signals?EMG signals may be defined as a biomedical signal that estimates electrical currents provoked in muscles during their contraction illustrating neuromuscular activities.
When the muscle is stimulated for any mechanism, the length of the muscle declines, which leads to the muscle, skin, and electrodes moving with regard to one another.
The EMG signals always arise from the electrical activity of the muscle fibers which are stimulated during the time of contraction.
Therefore, EMG signals are recorded by positioning electrodes close to the muscle groups. It is the arrangement that helps in the monitoring of EMG signals from muscle activity.
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All of the following are actions one may participate in if they are seeking group therapy except __________.
A. describing problems
B. sharing experiences
C. providing emotional support
D. setting goals for the group
Answer:
D
Explanation:
In this food web what is represented by the chains of arrows from the grass to the fox?
Answer:
Does anyone watch shaurya aur anokhi ki kahani on star plus an Indian serial you'll love it
PLEASE HELP!!!
what protein is part of the basal lamina outside blood vessels, and activates platelets when they stick to it?
-hemoglobin
-collagen
-fibrinogen
-tissue factor
I don’t understand it
what signals the end of the cell cycle
Which of the following describes a way that protists differ from animals and plants? Group of answer choices
A.Different species of protists do not differ greatly from one another.
B.Protists are typically much larger than most plants and animals
C.Protists resemble neither plants nor animals.
D.Protists resemble neither plants nor animals.
Answer:
A. Different species of protists do not differ greatly from one another
2. Which part of a eukaryotic cell contains the instructions on how to recombine the molecules in nutrients into new molecules that the cell can use?
A. DNA in the nucleus
B. Chlorophyll in chloroplasts
C. Water in vacuoles
D. Digestive chemicals in lysosomes
Please help me !
What is an example of two species working agains each other in an ecosystem??
Thank you!
Answer:
just think of the food chain
Explanation:
example the lion and the antelope
Mutation happens during which of the following processes?
D Protein synthesis
A DNA transcription
B DNA replication
CTranslation