Answer: The Miller-Urey experiment provided the first evidence that organic molecules needed for life could be formed from inorganic components. Some scientists support the RNA world hypothesis, which suggests that the first life was self-replicating RNA.
Explanation:
Simple organic compounds might have come to early Earth on meteorites.
Why does an animal inhale?
A) To get rid of cellular waste like oxygen from the body.
B) So cells can use the oxygen in the air to produce energy.
C) To get rid of cellular waste like carbon dioxide from the body.
D) So cells can use the carbon dioxide in the air to produce energy.
When is the lac operon most active?
A. When glucose levels are high and lactose is present
B. When glucose levels are low and lactose is absent
C. When glucose levels are low and lactose is present
D. When glucose levels are high and lactose is absent
Answer: The correct answer to the question is option WHEN GLUCOSE LEVELS ARE LOW AND LACTOSE IS PRESENT.
Explanation: To start with,Lac operon can be simply defined as a part of the DNA that is under the part of the DNA is manipulated and controlled by the same promoter,they can be found in some prokaryotic cells giving room for regulation over excess synthesis of protein.so simply put,these specific segment of the DNA binds with the segment of the polymerase of RNA so that transcription of the mRNA from the operon genes will be achieved.
Lac operon is also known as lactose operon, it is seen in some enteric bacteria like e.coli where they play a crucial role in coding of genes for those proteins that function in moving lactose into the cystocel and digesting it to form glucose that is used for energy generation. These lac operon are are most active when glucose levels are low and lactose is present,with the low level of glucose, the lac operon can be transcribed to a high level,this is to ascertain that the bacteria only gets to activate the lac operon and can only make use of it,that is using lactose when all the preferred energy source from glucose has been exhausted.
Answer:
c.
Explanation:
Do people with AIDS make antibodies?
Answer:
Yes, people with aids do produce anti bodies.
Explanation:
People who have HIV produce special antibodies that enable them to suppress the virus.
What does it mean if there are two different alleles for a trait?
Answer:
An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous.
Identify and describe the three ways that mutation affect organisms
Answer:
they may cause the development of a disease-causing allele
they may cause the development of a more beneficial allele
they in some cases, may have no noticeable affect
Explanation:
Answer:
Sample Response: Mutations may be beneficial, harmful, or neutral to organisms. If the change caused by a mutation is useful to the organism, then it is beneficial. If the change is damaging to an organism, then it is harmful. If the change is neither useful nor damaging, then the mutation is neutral.
hope this helped
11. What did Darwin think about on his journey home to England?
12. After he returned to England, what hypothesis did Darwin develop to explain his findings?
Which of the following is NOT stored in the bone?
Bone Inside
A.
calcium
B.
fat
C.
minerals
D.
water
Answer:
water
Explanation:
What is one of the main functions of the large intestines?
break down food chemically
break down food physically
absorb nutrients
absorb water
Answer:
absorb water and mineral salts.
Explanation:
Answer:
D. absorb water
Question 12 of 25
2 Points
How do plants absorb carbon dioxide?
A. By transpiration
B. By cellular respiration
C. By condensation
D. By photosynthesis
SUBMIT
Answer:
D
Explanation:
Plants absorb carbon dioxide by photosynthesis
Answer:
D
Explanation:
ILL PAY YOU 20 DOLLARS!!
Some plants grow in trees and steal water and nutrients from the tree. This is an example of (2 points)
parasitism
commensalism
mutation
mutualism
Answer:
Parasitism because this represents a symbiotic relationship in which an organism benefits from the harming or injury of another animal. An extorting personality per say.
Answer:
Parasitism.
Explanation:
Parasitism is when an organism (in this case, a plant) lives in or on something (in this case, in a tree) and harms it in some way to get what it wants.
I say, QUIT HARASSING THAT TREE! Lol, hope this helps!
-Adrien
Question 5
What favorable characteristics does the atmosphere provide that enables life to thrive on Earth?
Answer: The atmosphere Contains oxygen which helps life thrive on Earth, it also helps to stabilize temperature.
Explanation: Animals needs oxygen to survive, the atmosphere contains about 22% of oxygen and also some amount of carbon dioxide which are also essential for plant growth.
The atmosphere serves as an earth-shield against ultraviolet rays, it helps minimize the amount of deadly rays that hit the earth surface. This also helps to stabilize the temperature of the earth to some extent.
All these, provided by the atmosphere helps life thrive on Earth.
Answer:
The atmosphere is held in place by gravity and rises 600 kilometers above Earth into space.
Explanation:
I am sorry if I am rong❌
6. How does
a vaccine work?
those who tell me the first answer i will mark as brainlist
and vote +thanks and i will follow just now
Answer:
vaccines inject either weaker strain or dead viruses into the body in order for the immune system to produce antibodies that will help fight off the disease in the future.
hope this helps
Answer:
Vaccines help develop immunity by imitating an infection.
It causes the immune system to produce T- lymphocytes and antibodies.
once the imitation infection goes away, the body is left with a supply of T- lymphocytes, as well as B- lymphocytes that will fight the disease in future.
What are the two molecules phages made out of?
Answer:
Like all viruses, phages are simple organisms that consist of a core of genetic material (nucleic acid) surrounded by a protein capsid. The nucleic acid may be either DNA or RNA and may be double-stranded or single-stranded.
Explanation:
Is there a relationship between the number of chirps per minute and the temperature? If so, describe the relationship.
Answer:
Habsburg
Explanation:
Ndbenn
Predation is responsible for the _________ we see in modern organisms.
evolution
co-evolution
nutrients
adaptations
emphysema and asthma are respiratory disorders that may both be attributed to smoking; they also share many symptoms in common. As a physician, how would you distinguish between these two disorders when diagnosing a patient? explain.
Emphysema happens when the tiny sacs in your lungs (called alveoli) are damaged. Chronic bronchitis is when the tubes that carry air to your lungs (bronchial tubes) get inflamed. Smoking is the most common cause of those conditions (and COPD).
Some people have asthma and COPD at the same time. If you have symptoms of both diseases, your doctor may call it asthma-COPD overlap syndrome.
People who smoke or breathe in pollution or chemicals at work for many years have higher chances of having COPD. That's why the condition often starts in middle age or later in life.
Asthma is sometimes caused by gene changes that are passed down through families. If one of your parents has the disease, you're more likely to have it. Symptoms often start in childhood.
Since asthma and COPD both make your airways swell, they both can cause shortness of breath,coughing, and wheezing.
One main difference is that asthma typically causes attacks of wheezing and tightness in your chest. COPD symptoms are usually more constant and can include a nasty cough.
To figure out which condition you have, your doctor will start with a physical exam and questions about your medical history. They’ll look at your nose and throat and listen to your lungs with a stethoscope. Your doctor will also want to do a test called Spirometry that checks how well your lungs work.
the roots nodules of leguminous plants contain a parasitic bacterium it is true or false
Answer:
false
Explanation:
Answer:
False
Explanation:
Can someone please help me with this question
Answer:
Explanation:
Here's a hack. Select everything in that question and click the right side of your track pad with two fingers and click inspect. It'll tell you which row the correct answer is on.
How have scientific advancements been both beneficial and disadvantageous to society?
Answer:
For the benefits we have had improvements in communication and transportation which has caused an increase in economic growth.
For the disadvantages this causes (urbanization) will allows people to live in urban areas.
Explanation:
They have totally improve the economic growth, and not only that, but also they made transportation and also communication better. We also have (medical) technology that can help sick ones and people who need help in these aspect's.
But now, the bad side or the (disadvantage) side on this aspect would be of that this causes (urbanization) will allows people to live in urban areas. And also, this technology would be very dangerous to use, (depending) what you're using of course. But this can be seriously hazardous to people, so tis would really be the bad side to this.
I Hope this helps you!
First gets brainliest
Answer:
new moon
Explanation:
Give two examples of pseudo coelomate animals.
Answer:
Roundworm & Taridgrade
Explanation:
bruh
Answer:Nematodes,Rotifers
The organ which helps in the digestion of fatty foods is the__ A. Liver B. Stomach C. Pancreas D. Gall bladder
Answer:A
Explanation:
An allele that expresses itself in a heterozygote is a(n)
A. recessive allele
B. allele pair
C. dominant allele
What could its hardness be if it can scratch a quartz mineral?
Any mineral with a Mohs hardness of 7 or greater could scratch quartz. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10).
hey um hopes this helps please try to answer my newest question please
Answer:
7 Hardness of a quartz mineral
Explanation:
Answer:
Orthoclase feldspar mineral is 6 percent hardness
Quartz mineral is 7 hardness
Topaz mineral is 8 hardness
Corundum mineral is 9 percent hardness
So you are asking for the hardness if it can scratch a quartz mineral. The answer is that Quartz mineral is 7 percent hardness if it can be scratch.
Key words:
1: Mineral
2: Hardness
Hope this helps.
Select all the correct answers.
Which of the following organisms can have all of the energy it uses to move, grow, and survive traced back to radiant energy from the Sun?
a tree
a human
a flower
a bacterium
a fish
Answer: A. ,C.
Explanation: It's in the food chain and constantly need's water.
The correct answers are:
A treeA flowerA bacteriumA fishWhy organisms need sunlight?All of these organisms can have all of the energy they use to move, grow, and survive traced back to radiant energy from the Sun. Trees and flowers undergo photosynthesis to convert sunlight into energy in the form of glucose, which they use to grow and carry out metabolic processes.
Bacteria can also undergo photosynthesis, or they can use organic matter as a source of energy, which ultimately comes from the Sun through the food chain. Fish, as well as other animals, obtain their energy by consuming other organisms that have obtained energy from the Sun through photosynthesis or other means.
Humans are also ultimately dependent on the Sun's energy, but they obtain their energy indirectly through the food they consume, rather than directly from photosynthesis.
Learn more about sunlight, here:
https://brainly.com/question/12479583
#SPJ7
When crossing two heterozygous parents, the chance of getting an offspring with both recessive alleles is
3 out of 4 (75%)
1 out of 4 (25%)
4 out of 4 (100%)
Someone help me :)
What are enzymes? (Check all that apply)
Proteins
Antibodies
Hormones
Catalysts
Fats
Chains of amino acids
None of the above
Answer:
biological molecules biochemical reactions
Answer:
Here it is
Explanation:
Which venn diagram accurately describes what characteristics of solids, liquids, and gasses could be added to this diagram
Answer:
See explanation for image
Explanation:
The Venn diagram that can accurately show the characteristics of solids, liquids, and gases, can show which characteristics are unique to each of these states of matter and which characteristics are shared among the three.
You did not present the answer options, but it was possible to find them in questions like yours. These answer options are in the figure attached below and among them, the letter B is the correct answer.
Regarding the Venn diagram, we can say that:
The diagram consists of three circles, which overlap, sharing a small space, in the center of the three.Each circle represents a different element.The part of the circle that is away from the shared center refers to the particular characteristics of each element.The part of the circle that is within the shared center refers to the characteristics shared between these elements.In diagram B shown in the figure below, it meets all the requirements shown above.
In this diagram, the shared center presents the common characteristics of solids, liquids, and gases. However, the top circle shows the particular characteristics of solids. The circle on the left shows the particular characteristics of gases, while the circle on the right shows the particular characteristics of liquids.
More information:
https://brainly.com/question/15132223?referrer=searchResults
Unit of force is called derived unit
Answer:
Unit of force is called derived unit because the unit of force is derived from two or more than two fundamental units. i.e. kg*m(s*s).
Hope this answer is helpful for you.
Answer:
true
Explanation:
Help me please
61)
Computer simulation is becoming a commonly used process to efficiently model and evaluate the impact of a variety of proposed solutions when facing a complex real-world problem. Reasons for using computer simulation over actual production of possible solutions include all except:
A) costs associated with testing and prototyping too high
B) computers are not as trustworthy as actual prototypes are
C) trial system would not withstand significant testing desired
D) time necessary to acquire and analyze results prohibitively long
Answer:
The correct answer is option B) "computers are not as trustworthy as actual prototypes are"
Explanation:
It is false to affirm that results obtained from computer simulations towards looking for solutions of real-world problems are not as trustworthy as results obtained from actual prototypes. In most cases, computer simulations had proved to be reliable, particularly when the programers use validating arithmetic and algorithms. There are multiple companies dedicated to develop computer simulations to solve real-world problems, which are constantly used and tested in scientific investigations.
computers are not as trustworthy as actual prototypes are