A point mutation occurs when a single nitrogenous base is substituted, deleted, or inserted in a single base pair of DNA. Sickle cell anaemia is an example of a point mutation.
A point mutation is a genetic mutation that occurs when a single nucleotide base in an organism's genome is changed, inserted, or deleted. Point mutations have a variety of effects on the downstream protein product, with moderately predictable consequences based on the specifics of the mutation. In terms of protein production, composition, and function, these consequences can range from having no effect (e.g., synonymous mutations) to having a negative effect (e.g., frameshift mutations).
Transitions occur when a purine base is replaced with another purine or a pyrimidine is replaced with another pyrimidine. Transversions occur when a purine is replaced by a pyrimidine or vice versa. Missense mutations result in the production of a different amino acid. A missense mutation, also known as a non-synonymous change, alters a codon to produce a different protein.
The term point mutation is sometimes used to describe insertions or deletions of a single base pair (which has a greater negative effect on the synthesised protein because the nucleotides are still read in triplets, but in different frames: a mutation known as a frameshift mutation).
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Many scientists are worried that the increased amount of carbon dioxide in Earth's atmosphere will _____
A. make it harder for animals to breathe
B. use up all our fossil fuels
c. cause Earth to warm up unnaturally
D. make green plants grow too fast
When tectonic plates are colliding, what is the geological event that will NOT occur at a convergent boundary?
Question 2 options:
Mountains
Volcanoes
Volcanic Island
Rift valley
The thin outer shell of Earth is broken into large pieces which is called as tectonic plates. Rift valley is not the event of collision between tectonic plates.
What is rift valley?Rift valley is the low land between highlands and mountain ranges created by geographical rift.
These can be formed on both land and deep oceans, where they are made by seafloor spreading process.
It is caused when two tectonic plates moves apart from each other.
Thus, the correct option is D.
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Most non-vascular plants are small because they-
A. Can only transport water short distances
B. Have thick leaves
C. Usually grow in deserts
D. Are unable to perform photosynthesis
PLEASE HELP I NEED THIS ASAP!!!
Answer:
A. Can only transport water short distances
Explanation:
Nonvascular plants are very short because they cannot move nutrients and water up a stem
Hope this helps! =w=
Flowers are the ______________ structures of plants.
A. meiosis
B. reproductive
C. motosis
Answer:
B. reproductive
Explanation:
Answer: reproductive
Explanation: flowers contain the reproductive organs of a plant, the stamen (male) and/or pistil, (female)
Help me please!
What information can be gained about the structure and function of plants by ring barking?
Answer:
About its different layers and their functions in the plant body.
Explanation:
By studying the structure and function of the plants by ring barking, we find out that the ring barking is very important for the plant because it provides support as well as protection to the inner part of the stem against environmental conditions such as temperature and intense light etc. These barks are responsible for the storage of water which can be used during drought conditions. This ring barking provides information about different layers of stems such as periderm, cortical and phloem tissue that has a specific function in the plant body.
Fossil fuel dependence has an impact on which of the following?
A)
the environment
B)
economics
C)
poverty
D)
international security
E)
all of the above
4.) The more different kinds of living things in an ecosystem the more successful it is. This is called ___________.
use this vid https://youtu.be/-Sybgof-X2k
Answer: isn’t it climax community?
Explanation:
How are photosynthesis and cellular respiration connected as a cycle?
Answer:
Photosynthesis is when energy, carbon dioxide and water react to produce glucose and oxygen. It is an endothermic reaction (takes in more energy than it gives off).
glucose + oxygen + (energy) → carbon dioxide + water
C 6 H 12 O 6 + 6 O 2 → 6 CO 2 + 6 H 2 O
Respiration is the process of producing energy from glucose. It uses glucose and oxygen to give water, carbon dioxide and energy (thus making it exothermic).
carbon dioxide + water + energy → glucose + oxygen
6 CO 2 + 6 H 2 O → C 6 H 12 O 6 + 6 O 2
As you can see from the equations, they are essentially the reverse of each other.
Another difference is how they are used. Respiration occurs in the mitochondria of all living cells, whereas only plants photosynthesize.
In plants, they make their own glucose using the sun's energy, then respire to allow them to use the glucose for the energy they can use. The glucose can also be stored and used in many other ways other than in respiration.
Can someone please correct me or tell me if I’m correct please that will be lovely
Answer:
A
Explanation:
Destruction of habitat is not going to preserve the habitat.
What is the name for all the plants and animals that live together in a habitat?
Answer:
Biotic community
Explanation:
Definition of biotic :living organisms in the ecosystem .Example Frog,fish,and etc.
Definition of Abiotic: Nonliving things in the ecosystem. Examples wind,water,and etc.
What do you think accounts for the higher risk of earthquakes in Los Angeles than in Chicago?
Answer:
Los Angeles, California, rests on a major (and active) fault line known as the San Andreas Fault. It's the line between the Pacific and North American tectonic plates, and more seismic activity is measured daily than on the New Madrid Fault, which runs through New Madrid, Missouri, and around the mid-west. Chicago is still at risk, of course, but not nearly as much, given the small activity of the fault line.
The San Andreas Fault, a significant (and active) fault line, runs through Los Angeles, California.
Why is a higher risk of earthquakes in Los Angeles?There is more seismic activity recorded there every day than on the New Madrid Fault, which passes through New Madrid, Missouri, and other midwestern cities.
It is the boundary between the Pacific and North American tectonic plates. Chicago is still in danger, of course, but not nearly as much as before due to the fault line's low level of activity.
Therefore, movement along the San Andreas Fault and its numerous accompanying faults, which define the tectonic border between the Pacific and North American tectonic plates, is what causes earthquakes in California.
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List the four codes for RNA and show how they are paired.
Answer: adenine (A), uracil (U), guanine (G), and cytosine (C). When this base-pairing happens, RNA uses uracil (yellow) instead of thymine to pair with adenine (green) in the DNA template below.Bases. ... The four bases that make up this code are adenine (A), thymine (T), guanine (G) and cytosine (C). Bases pair off together in a double helix structure, these pairs being A and T, and C and G. RNA doesn't contain thymine bases, replacing them with uracil bases (U), which pair to adenine1.
Explanation:
Can raccoons eat Newts and salamanders?
Answer:
yes
Explanation:
For anybody with this question
Here is your answer
1
3
4
How does nectar increase the ability of plants to reproduce?
Answer:
nectar is very sweet juice which attracts insects.
when those insects suck the nectar the pollen grains sticks to the body of those insects and then when they fly and sit on the other flowers and then those pollen grains are then transferred to the stigma of that flower which then forms a zygote and then forms a new flower.
and this is how nectar helps to reproduce
Below shows a process that occurs in cells. The type of building blocks represented by the letters A, B, and C in this process are:
A: Nucleotides
B: Codons
C: Amino Acids
D: Nitrogen bases
During which stage of the cell cycle do Mitosis and Cytokinesis occur? (I will give brainliest?
Answer:
Mitosis occurs in Interphase and cytokinesis occurs in Anaphase
Explanation:
Study the image, and then choose the statement that best describes the image.
Answer:
The nitrogen system aka what we have
Explanation:
What are the yellow arrows showing . Please no links :) ill mark brainlest if you give correct answer
Answer:i am not 100 percent sure but i think the yellow arrows are showing the wasted carbon
Suppose you are a politician representing the interest of a small community whose economic health depends on the fishing industry. How would you approach the problem of the overfishing of nearby species?
Answer:
To create more jobs in other fields.
Explanation:
As a politician, more jobs has to be created in other fields such as industries, education sector etc in order to avoid overfishing in the areas because the people related to fish industry will move to join other jobs that gives good pay as compared to fishing. If there are more jobs in other fields then more people will leave the fish industry and join jobs in other fields. In this way, we can avoid overfishing problems in the region that causes decrease in the population of fish species in water.
The elephant reproduces
sexually. If the parent cells
have 38 chromosomes, how
many chromosomes do the
elephant sex cells have?
Answer:
5 sex cells
Explanation:
Plsssss help meh ASAP
Answer:
Cost
Explanation:
Answer:
The answer Is D = Cost
Explanation:
Characteristics such as melting point, boiling point, density, solubility, color, odor, etc. are physical properties. So the only one left is D. Cost :)
a. If you were designing a pigment to maximize light capture in a new kind of solar array what light absorbing properties would have?
b. what molecule in the sumary equation for photosynthesis ends up in the sugars made by photosynthesis?
c. When Jasmine was a baby, her parents planted a jasmine plant weighing 1 kg in a container in their yard with 50 kg of soil. When Jasmine was 18, the plant was estimated to weigh 75 kg. Then it was time to transplant the plant into the family yard so it could continue growing. When the soil in the container was weighed, its mass was 50 kg. Over the years Jasmine's parents neither added nor removed soil from the container with the plant in it. How did the plant increase in mass by 74 kg while the soil did not change in mass and never needed adding to over the years?
Answer:
Following are the solution to the given points:
Explanation:
In point a:
When a light absorption dye was to be introduced to optimize the plant's absorbing capacity, the paint could absorb wide different wavelengths besides the observable light spectrum. It must also absorb the UV only at IR light rate to maximize the fluorescence intensity.
In point b:
Its molecule in the production of pentose sugar is the nitrogen and hydrogen atoms of carbon dioxide and water ions of air. Its water oxygen atoms are emitted through oxygen atoms during this phase.
In point c:
Its plant increased with weight while decreasing the weight of the earth, so because manufactured goods needed for plant growth are carbon dioxide from water and air, provided to a plant every day and nitrogen extracted from of the atmosphere through means of microbial materials into nitrogen. So, even if the plant raised its weight, the soil does not change the weight.
How is the lower respiratory system related to the
circulatory system?
The lower respiratory system moves oxygen
into the blood; the circulatory system delivers
blood to the body.
The lower respiratory system delivers blood
to the body; the circulatory system moves
oxygen into the blood.
The lower respiratory system moves oxygen
into the blood; the circulatory system delivers
air into the lungs.
Answer:
b
Explanation:
Answer:
It's A
Explanation:
Humans have 46 chromosomes in each of their body cells. Jason has a small cut on his right arm and his body cells are undergoing mitosis to repair the damage. How many chromosomes will be in each new body cell after cell division?
Answer:
23
Explanation:
(HELP ASAP)
Cystic fibrosis is one of the most common genetic diseases in America. It is estimated
that 1 in 23 Americans are carriers for Cystic Fibrosis. Cystic Fibrosis is a recessive trait
that follows Mendel's Law of Dominance.
Answer ALL parts of the free response below - be sure to use vocabulary and explain your
response in detail:
A. Explain what Mendel's Law of Dominance means
B. Explain how 2 parents who do NOT have Cystic Fibrosis could have a child with cystic
fibrosis.
Answer:
a.When an organism is heterogeneous for a trait, it expresses only the dominant allele
b. A child will be born with CF only if they inherit one CF gene from each parent. A person who has only one CF gene is called a CF carrier. They are healthy and don't have the disease. But they are a carrier of the disease.
Explanation:
a.In other words, the dominant trait always masks the recessive trait.
b.A parent can be a CF carrier, and pass the CF gene on to their child.
Two ramps of equal height are placed 1 m apart, and balls of equal mass are released from the top of each ramp. What happens to the motion of the balls when they meet in the middle?
The balls will move in a random direction.
The balls will stop.
The balls will continue moving forward.
Answer:
The ball will stop
Explanation:
I don't know much about it.
Answer:
the balls will continue moving forward
A scientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. Which biological component would be best to use as a model for the pill’s function?
bacteriocytes
phagocytes
complement system
antibodies
Answer:
thx but the answer is D
Explanation:
A pill formulated to attack a specific type of bacteria that infects the throat would best follow the operations of antibodies.
What are antibodies?Antibodies are chemicals produced by the immune system of the body in response to external attacks by foreign substances.
In other words, antibodies are like weapons deployed to defend the body from external attacks.
A pill designed to attack a specific type of bacteria that infects the throat will be most effective if it follows the operations of antibodies.
Since different antibodies are produced for different external invasions, the pill will also be most effective by being specific in its actions.
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endocrine glands are called ductless gland give scientific reason
Answer:
their secretions reach the blood directly without ducts
How do viruses reproduce during the lysogenic cycle?