Answer:
peroxisomes
Explanation:
The peroxisomes represent one of the organelles of the cell. They are usually small and characterized by membrane-bound vesicles that contain oxidative enzymes.
The enzymes in peroxisomes are involved in the oxidation of organic molecules - a process that leads to the formation of hydrogen peroxide. The later is further converted to water and oxygen by the constituent catalase enzyme of the peroxisomes. Fatty acids are also oxidized in peroxisomes but instead of hydrogen peroxide, acetyl groups that are utilized in other biosynthetic reactions are produced.
What do spindle fiber and flagella have in common:
Select one:
a. They are examples on a structure called a microfilaments
b. They are all structures found in prokaryotic cells
c. They are microtubules
d. They are found in the nuclei of eukaryotic cells
Answer: c
Explanation: Spindle fiber: is a microtubules that comes out from the centrosomes when the cell is preparing for division. They are responsible for the segregation of sister chromatids and movement of chromosomes during mitotic and meiotic division.
Flagella: a slender threadlike structure, especially a microscopic appendage that enables many protozoa, bacteria, spermatozoa, etc. to swim.The thread-like structure is called chromosomes.
This can conclude that microtubules are common in spindle fiber and flagella.
4. Unlike a scientific theory, a scientific law describes an observed pattern in nature without
attempting to explain it.
O true
Ofalse
Answer:
False
Any discovery must first be tested and have an explanation
If the Gulf Stream stopped running, how would the climates of North America and Europe be affected?
Answer: Land would become infertile, habitat loss, & environmental changes
Explanation:
Because there wouldn't be alot of water to keep the soil moist, therefore the ground would begin to harden and get dry. :)
If the Gulf Stream stopped, the climates of North America and Europe would be colder and drier.
The gulf stream is a huge current of warm and fast-moving ocean water. This ocean current plays a key role in regulating temperatures across the globe and has an impact on the frequency and intensity of storms and rainfall. The collapse and stoppage of this stream will cause an array of problems, including but not limited to:
Reduced rainfallLower temperaturesFewer stormsAreas that would be particularly affected by this are North America and Europe. This is due to the direction that the gulf stream flows, carrying warm water along these boundaries.
The vast amount of warm water carried by this stream explains how it is able to affect the average temperatures of these coastal areas, with the disappearance of the stream, temperatures in North America and Europe would initially decrease.
The warm water carried by this current is also responsible for increased rainfall. Warm water on the surface of the ocean is heated by the sun and evaporates, creating clouds, which then provide rain. The absence of this current would dramatically affect cloud formation and reduce the amount of rain severely. This can lead to droughts and reduced agriculture.
Though Fewer storms may seem like a positive impact, it is not entirely. Storms play a crucial part (together with ocean currents) in regulating global temperatures, as well as provide a source of rainfall to end droughts and promote biodiversity in areas that depend on water and humid climates.
The gulf stream is important for maintaining climates and rainfall. If it were to stop, climates in North America and Europe would be colder and drier.
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Which structure in plants produces a substance that protects the extending roots from developing friction?
a.root cap
b. stele
c.stem
d.epidermis
Answer:
The correct answer is - option a. root cap.
Explanation:
Roots of the plants are developed from the structure called radical in seed during germination of seed.The tip of the root is tender due to the present of the apical meristem that is the precursor of the new cells of the root and protected by the root cap and penetrate in to the soil with the help of mucigel. Mucigel is the which protects the extending roots from developing friction.
Thus, the correct answer is : option a. root cap.
Answer:
The answer is ROOT CAP
Explanation:
Got it right on my test.
Biology Question
If the frequency of an autosomal dominant allele is 0.6 . Calculate the frequency of recessive phenotype in a population of 6000
Answer:
First thing is that word “autonomous” given in the question is actually “ autosomal”.
Now let's start solution:
Frequency of dominant allele “A” is denoted by p.
Here p = 0.6
Frequency of recessive allele “a” is denoted by q.
According to Hardy - Weinberg equilibrium
p + q = 1
Hence q = 1 - p = 1 - 0.6 = 0.4
Now in question what is asked is about frequency of recessive phenotype (aa).
According to Hardy - Wienberg equilibrium frequency of recessive phenotype is q2 (q square).
Frequency of recessive phenotype is = q2 = 0.4 x 0.4 = 0.16
Now Number of recessive phenotype in a population of 10000 is
= frequency of recessive phenotype x total population
= q2 x 10000
= 0.16 x 10000
= 1600
I answer you other question.
I apologize. it's mistakenly
Which of the following can a chemical bond do?
A. Change element properties
B. Store energy
OC. All of these
D. Release energy
The following can a chemical bond do is all of these. The correct option is C. All of these.
What is a chemical bond?A chemical bond is a bond formed between two elements. The energy of the reaction is stored in the bonds when the reaction happens, the energy is released from the bonds. It also changes the chemical properties of the elements.
Thus, the correct option is C. All of these.
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If an experimenter wants to use the GFP method but needs to detect the presence or absence of several proteins at the same time, he can take advantage of mutational variants of GFP that emit what light?
Answer:
different colors
Explanation:
The green fluorescent protein (GFP) is a type of protein widely used in molecular biology laboratories because this protein can be used to detect the expression of proteins and to identify cellular structures. This protein displays green fluorescence when it is excited by blue light and, in the last years, many variants of the GFP protein have been developed. The altered GFP proteins react to distinct wavelengths of light, thereby emitting light to different colors. The mutants forms of the GFP protein are produced by genome engineering techniques that generate modifications capable of altering the folding of the normal GFP protein.
How are red blood cells able to move through narrow vessels to carry oxygen throughout a multicellular organism? (1 point) a)They are flexible because they lack a plasma membrane. b)They are small because they lack a nucleus. c)They are long and thin with a tail-like end. d)They are small because their organelles are smaller than those of other cells.
Answer:
The correct answer is - option B. They are small because they lack a nucleus.
Explanation:
Red blood cells or erythrocytes are specialized cell that produce in bone marrow and have specific role such as carrying oxygen from lungs to deliver it to the various organs and carry out carbon dioxide.
In mammals these cells lack cell organelles such as nucleus and mitochondria, a major factor that determined its smaller size. The size of RBC are move through narrow vessels throughout a organism because of its specific size and shape that provide it space for hemoglobin and allow to be flexible and bend to move through narrow vessels.
Thus, the correct answer is : option B. They are small because they lack a nucleus.
In which of these stages is mitosis most important? A tiger cub is born. A tiger cub learns to walk. A tiger cub begins to grow. A tiger cub play-fights.
Answer:
A tiger cub begins to grow
Explanation:
because that's when they change the most
Answer:
A tiger club play fights
Explanation:
One main part of mitosis is the replacement of cells, so when the tiger gets hurt fighting, mitosis kicks in to replace the cells.
Initiation codon in eukayotes is ______
Answer:
AUG is the only initiation codon in eukaryotes.
Explanation:
Initiation codon in eukayotes is ___AUG___
How does the movement of particles of matter change when temperature increases?
Decreases
Increases
Increases then decreases
Does not change
Answer:
Increases
Explanation:
The movement of particles of the matter increases with the increase in temperature.
The particles gain kinetic energy with increasing temperature and move in faster rate.
For example: When we blow a balloon with our mouth, we increases the temperature inside the balloon, the particles in the balloon gain kinetic energy that leads to the faster movement of gas particles in the balloon and they collide with each other and surface of balloon, after a peak the balloon get burst because of high kinetic energy and high collision.
Hence, the correct answer is "increases".
Challenge Question! If a pregnant woman had a karyotype prepared for her baby before birth, would it be more useful in predicting the risk of Down Syndrome or Tay Sachs disease?
Answer:
Yes
Explanation:
Karyotype involves the process of viewing a persons chromosomes through Sophisticated equipments.
Down Syndrome or Tay Sachs disease are genetic diseases associated with chromosomal defects.
Having a karyotype prepared for her baby before birth, would be more useful in predicting the risk of Down Syndrome or Tay Sachs disease.
Celluose is a type of
1 lipid
2 carbohydrate
3 protein
4 grass
Answer:
cellulose is a type of carbohydrate. hope it help you.
Answer:
2.Carbohydrate
Explanation:
Thank you✌️❣️✌️
Recent research has found that on one island of the Galapagos two finch species interbred. This interbreeding may have resulted in a hybrid species that ultimately led to the extinction of one of the species Darwin discovered. They call this speciation in reverse, or despeciation. Based on what you know about speciation, why are these terms appropriate?
Answer:
Speciation is defined as an evolutionary process in which one population evolves into a distinct species.
Speciation in reverse, or despeciation is defined as the extinction of an old species due to combining with evolved species to produce hybrid species but it conserves biological lineage.
In the given research, the term used despeciation or speciation in reverse is appropriate as hybrid species resulted from interbreeding of Galapagos two finch species conserved the biological lineage but also loss one of the species Darwin discovered.
Answer:
Speciation is the method by which unique species evolve from a common ancestor. In this case, two of these species that split from a common ancestor interbred and created a hybrid. This hybrid was apparently stronger and possibly better adapted to the environment, which led to extinction of a species formed by the initial speciation event.
Explanation:
Plato
You are part of a research group that is attempting to improve on the beneficial genetic modification of golden rice, to further reduce
global hunger issues. Which of the following difficulties will you NOT encounter?
A. The genes could transfer into local wild plants
B. The seeds could be expensive,
C. The modified crops could make people very sick.
D. Biodiversity could be reduced,
Answer:
C.
sorry if this is wrong
If I were a part of a research group that is attempting to improve on the beneficial genetic modification of golden rice, to further reduce global hunger issues, then I would not encounter that the seeds could be expensive.
What is golden rice?Golden rice is genetically modified rice that contains provitamin A. This compound is responsible for the yellow-orange color of the rice, hence the name golden rice.
Golden rice can prevent vitamin A deficiency.The crop is available in countries such as Indonesia, Bangladesh, and the Philippines.It is much cheaper than the normal white rice available in the market.Golden rice is the modified version of normal rice which no additional cost and with enriched nutrients.Hence, option B is the right answer.
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Which phase of mitosis begins when the sister chromatids are cleaved, allowing the two sister chromatids of each pair to separate?
Answer:
Anaphase
Anaphase
Anaphase
What are the similarities and differences between prokaryotic cells and eukaryotic cells?
What type of transmission occurs when a pathogen is spread though sneezing or coughing
Answer:
air transmission
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Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?
A) The repressor will no longer bind to the operator.
B) The repressor will no longer bind to the inducer.
C) The lac operon will be expressed continuously.
D) The lac operon will function normally.
Answer:
D) The lac operon will function normally.
Explanation:
The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream. The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.so correct option is D) The lac operon will function normally.
If a researcher moved the repressor gene of lac I, along with its promoter; the lac operon will function normally. Option D is correct.
Promotor:
It is the genetic sequence that is recognized by the RNA polymerase to start the transcription.
Here, researcher moved the repressor gene of lac I , along with its promoter.
Therefore, transcription starts, it will express the repressor gene also because repressor gene was moved with promotor.
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What does a botanist study
Answer:
Botany is the scientific study of plants—how plants function, what they look like, how they are related to each other, where they grow, how people make use of plants, and how plants evolved.
I HOPE THIS WILL HELP YOUHAVE A GREAT DAY :)
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seventy five percent brown hair when we cross
Bb to bb
Physiology and anatomy problem-solving skills can be vital when you're the one taking a patient's history or doing the initial assessment. If you remember the functions of different organs and their anatomical relationships, you can come up with hypotheses and ask the relevant questions to test them. You will also know what to be alert for when caring for the patient later. A fair, fat, forty-three-year-old woman had been having episodes of griping abdominal pain after fatty meals. One day she ate French onion soup with lots of cheese and suffered severe enough pain that she called in sick. Her supervisor pointed out that she always gets sick after fatty foods. She went to the clinic and the nurse in triage took her vitals and history. The nurse noticed that the whites of her eyes were yellow and that she had tenderness on the right side of her abdomen. Blood pressure and heart rate were normal.
Based on this initial assessment, what organs do you think might be involved in this woman's illness, and why?
Choose the two most likely organs involved in her illness
a. Liver, because of the yellow coloration in her eyes, which indicates that the liver is not processing bilirubin.
b. Spleen, because of the pain on the right side of her abdomen.
c. Gall bladder, because it stores bile and might be related to the bilirubin buildup in her blood.
d. Stomach, because the pain occurs after eating
e. Heart, because her heart rate has not increased in response to pain.
f. Kidneys, because they should be cleaning the wastes out of her blood-her yellow eyes indicate that waste is building up in her blood.
g. Pancreas, because of the elevated blood glucose.
Answer:
The correct answer is: C. Gallbladder, because it stores bile and could be related to the accumulation of bilirubin in the blood.
Explanation:
The gallbladder is responsible for releasing bile juices that, together with gastrointestinal juices, degrade and metabolize fat molecules.
In people who have an unhealthy life, and gallbladder problems, these juices do not break down fat molecules and this is how these people suffer breakdowns, severe pain in the area of the middle third of the body, floating stools due to the high fat content .
The possible or most frequent problem of people who are like this 40-year-old woman is usually the accumulation of sialoliths in the bile duct.
The bile that is released by the gallbladder is necessary to drain properly into the intestines, if it cannot evacuate due to obliteration of the duct due to sialolithiasis or other reason, the gallbladder can become infected, generating a lot of pain and even possible sepsis.
Answer:
A and C
A: Liver, because of the yellow coloration in her eyes, which indicates that the liver is not processing bilirubin.
C: Gall bladder, because it stores bile and might be realted to tbe billrubin buildup in her blood.
Explanation:
The combination of trouble with fats and yellow discoloration should make you think about the hepatobiliary system. Now you have a hypothesis about what's wrong with this patient and can make a direct assessment toward supporting or disproving that hypothesis rather than asking a lot of questions that may not be relevant.
When a liquid becomes a gas, _____
The molecules move closer together
The molecules move farther apart
The molecules are unchanged
There are no molecules
Answer:
The molecules move farther apart.
Which of the following properties is the temperature at which a liquid turns to gas? (3 points)
оа
Magnetism
Ob
Thermal conductivity
ос
Melting point
Boiling point
Od
thermal conductivity
Answer:
Boiling point
Explanation:
I did the test
You get the idea to go check to see if you grandmother's car is missing so you go into the garage and find her car there, with the keys in the ignition, and this piece of paper on her front seat. Can you uncover the code she left you?
attached below
Answer:
A2 B1 C4 D1
Explanation:
While cooking, Lisa spills boiling water on her hand. Her skin turns blotchy with blisters. Which type of burn does she have? A. first-degree burn B. second-degree burn C. third-degree burn
Answer:
B
Explanation: First degree only makes the skin turn red
What organs/systems is affected by the sympathetic nervous system but is NOT affected by the parasympathetic nervous system?
Answer: cellular metabolism
Explanation:
Cellular metabolism is chemical reactions that takes place in living organisms so that they will be able to maintain life. Cellular metabolism is made up of thousands of genes, metabolites and proteins.
Cellular metabolism is affected by the sympathetic nervous system but is not affected by the parasympathetic nervous system.
The data shown above is a life table for the female Belding ground squirrel in the Sierra Nevada
Mountains.
Calculate the mortality rate (per thousand) between the ages of 1-2.
You must show your work in order to receive credit for your answer!
Answer:
377
Explanation:
you plus 252and 125 together and you will get 377
The removal of sections of RNA, called introns, occur at which regulation step in eukaryotic cells? (1 point)
o mRNA life span
O post-translation
O RNA processing
ochromatin remodeling
Answer:
post-translation
Explanation:
When a eukaryotic gene is transcribed in the nucleus, the primary transcript (freshly made RNA molecule) isn't yet considered a messenger RNA. Instead, it's an "immature" molecule called a pre-mRNA.
The pre-mRNA has to go through some modifications to become a mature mRNA molecule that can leave the nucleus and be translated. These include splicing, capping, and addition of a poly-A tail, all of which can potentially be regulated – sped up, slowed down, or altered to result in a different product.
Most pre-mRNA molecules have sections that are removed from the molecule, called introns, and sections that are linked or together to make the final mRNA, called exons. This process is called splicing.
In the process of alternative splicing, different portions of an mRNA can be selected for use as exons. This allows either of two (or more) mRNA molecules to be made from one pre-mRNA.
Answer:
RNA processing
Explanation:
RNA processing. Splicing, capping, and addition of a poly-A tail to an RNA molecule can be regulated, and so can exit from the nucleus. Different mRNAs may be made from the same pre-mRNA by alternative splicing.
Describe at least 2 benefits and 2 drawbacks there might be for animal cells (including humans) to make their own food through photosynthesis.
Answer:
Explanation:
Benefits
Animals will not depend on plant source again for their food but have it produced directly by themselves because photosynthesis will allow animal produce their own food
Animal will get a direct source of energy for their activities. Energy is derived from food consumed after the food has been broken down in the body system of animal. Animal photosynthesis will give animals access to direct source of energy as the product their food.
Demerit
Animal lacks chlorophyll the green. Pigment in plant that light hit on absorption that will enable them to photosynthesis.
Animal lacks ways or mechanism of regulating Carbondioxide in take as in the case of C4 plant and crassulacean metabolic pathway (CAM).
Animals such as human will not have access to varieties of food but stick to photosynthate produced by them.