Answer:
Mutations rarely occur
Explanation:
Mutations are genetic changes, i.e., alterations in the DNA sequence. Generally, mutations have deleterious effects, but there are exceptions where mutations may confer an adaptive advantage in a given environment. Mutations are often deleterious, and thereby these genetic changes are rare events. In consequence, mutation rates, i.e., the frequency by which new mutations arise in an organism over time, are generally very low. Finally, mutations that arise only in germ cells can be inherited from a generation to the next generation, while somatic mutations cannot be inherited.
The statement which is scientifically based is: A. Mutations rarely occur.
Mutation can be defined as a change (alteration) in the nucleotide sequence or genetic sequence of a living organism, which result in a variant form that may be transmitted to successive generations.
Basically, mutation is typically caused by a change (alteration) of single base units in deoxyribonucleic acid (DNA) or the insertion, deletion and rearrangement of an organism's genes or chromosomes.
However, mutations rarely occur in most living organisms due to the regulation and control of cell growth through cell cycle.
In conclusion, mutations rarely occur in most living organisms based on scientific researches.
Read more: https://brainly.com/question/19755749
Match each form of energy with its definition. The energy of the bonds between atoms.
mechanical energy
Kintetic energy
Chemical energy
potential energy
which macromolecule provides the blocks for recovery and repair in forming new muscle?
Answer:
It hast be protein
Explanation:
Answer:
Protein
Explanation:
Proteins provide strength,structure,and support for the body.
2. How are the circulatory, respiratory and lymphatic systems related to each other? specific.
describe how hormones work and explain why they are important?.
Give at least one example in your answer
6 marks
Answer:
Hormones are molecules produced by the endocrine system that send messages to various parts of the body. They help regulate your body's processes, like hunger, blood pressure, and sexual desire. While hormones are essential to reproduction, they are fundamental to all the systems of your body.
Cellular Respiration and photosynthesis are related in that they are opposite of each other. The products of one process are the reactants of the other.
True
False
Answer:
This statement is true.
Explanation:
because during photosynthesis , oxygen is produced because of the reaction of carbon dioxide, and water in the presence of sunlight. oxygen and glucose are synthesized during photosynthesis while on the other hand, oxygen is used in respiration and carbon dioxide is produced which again used by plants.
PLEASE HELP ME!!!
Help me by naming all the moon phases that are happening in each number.
Please, and Thank You!
Will Mark Brainliest!!!
Answer:
1. new moon
2. waxing crescent
3. first quarter
4. waxing gibbious
5. full moon
6. waning gibbious
7. third quarter
8. waning crescent
Match each moon or planet to the most accurate characteristic
.A. Earth's moon
B. Venus
C. Europa
D. Mars
1. It contains large amounts of frozen water
2. The temperature of its atmosphere is increased by high levels of carbon dioxide
3. It doesn't have enough gravity to have an atmosphere
4. Astronomers believe there is a good chance it contains liquid water
Answer:
a to 3
b to 1
c to 4
d to 2
im sorry if some of these are wrong hope this helps a little bit :)
Which organelle makes proteins?
*
o
A chloroplasts
O B nucleus.
C ribosomes
O D Golgi apparatus
Answer: RIBSOMES
Explanation:
none
8
Organisms evolve due to changes in their DNA called
A
growing
B cellular respiration
mutations
D
recombination
Answer:
Mutaciones
Explanation:
Los cambios genéticos incluyen mutaciones causados por errores en la replicación del ADN de un organismo
Answer:
b cellular respiration
why do some root cell have root hair
Answer:
Root hairs form an important surface as they are needed to absorb most of the water and nutrients needed for the plant. They are also directly involved in the formation of root nodules in legume plants. ... Having a large surface area, the active uptake of water and minerals through root hairs is highly efficient.
Answer:
Explanation:
Root hairs appear when the epidermis differentiates. The epidermis has specialized cells that are root hair cells. Much attention has been given to root hairs because of their presumed importance as absorbing surfaces.
What is one of the energy transformations that takes place during cellular respiration
energy to
energy
One of the energy transformations that take place during cellular respiration is the conversion of chemical energy in carbohydrates into usable cellular energy in the form of ATP.
During cellular respiration, the bonds holding carbohydrate molecules in foods together are broken down and the energy in the bonds is converted to usable energy by cells, in the form of ATP.
Cellular respiration takes place in a series of reactions, but the summary is represented in the equation below:
[tex]C6H12O6 + 6O2 ---> 6CO2 + 6H2O + energy[/tex]
More on cellular respiration can be found here: https://brainly.com/question/13721588?referrer=searchResults
3 process that directly add carbon dioxide to atmosphere?
Answer:
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement
if there's 23% cytosine how much adenine
I'm going to tell you how to find the answer yourself so you can figure out other problems like it.
First, DNA is made up of those four nucleic acids. Adenine always pairs with Thymine in DNA. Guanine always pairs with Cytocine.
Therefore, the amount of Adenine will always equal the amount of Thymine in DNA. The amount of Guanine will always equal the amount of Cytocine.
So, if Adenine equals 23% of your sample and Adenine equals Thymine, then Thymine equals 23%.
Add the amounts of Adenine and Thymine. 23% + 23% = 46%
100% - 46% =
That gives you the percentage of Cytocine and Guanine together. Since they are in equal amounts, divide by two and you have the percentage of each.
What type of cell is mostly square or rectangular shaped? *
O A animal
B bacteria
C plant
O D fungus
Answer:
It would be >> C plant cells
The cell theory states that all living cells come from pre-existing cells. If that's true then, how did the first cell originate?
1 not enough information is given
2 Nature created the first cell.
3 The first cell originated spontaneously.
4 This postulate of cell theory is false.
Answer:
option 2 and 3 are seems to be correct.
Explanation:
according to our studies the options and 3 are seems to bee correct because the first cell was created by nature not by man or any other organism and the term spontaneously also look to be true. so my answer is that options 2 and 3 are correct.
Which stage of cellular respiration produces the largest amount of energy?
Stage one
Stage two
They produce an equal amount of energy
The answer is Stage 2
why are region called promoters essential to RNA transcription?
Answer:
A promoter is a region of DNA where transcription of a gene is initiated. Promoters are a vital component of expression vectors because they control the binding of RNA polymerase to DNA. RNA polymerase transcribes DNA to mRNA which is ultimately translated into a functional protein.
hope that helps :)
what was the Louis Pasteur view regarding the origin of life
Answer:
Louis Pasteur effectively disproved the spontaneous generation concept by performing research that displayed exposure to fresh air was the trigger of the microbial growth.
Explanation:
Why is red light the best for photosynthesis?
Answer:
The primary reasons why LED fixtures emit a lot of red are 1) red LEDs are among the most efficient at converting electricity into photosynthetic photons, 2) chlorophyll strongly absorbs red light, thus it is effective at photosynthesis, and 3) red LEDs are relatively inexpensive
HELP WILL MARK BRAINLIST !!!
Answer: 9. is D
10. is A
Explanation:
Answer:
the 2 at the top:
1. unicellular cells are made of 1 cell
2. multicellular cells are made of many cells
the middle ones:
very sorry don't know those ones
the last ones:
prokaryote goes to B
eukaryote goes to C
unicellular goes to D
multicellular goes to A
Explanation:
sorry i couldn't help that much :/
How many days does it take the moon to orbit earth?
A. 36.2
B. 1
C. 23.5
D. 29.5
Answer:
D.29.5
Explanation:
it's takes 29.5 days to orbit the sun
Which is one physical property that all stars have?
Answer:
They all has gases in them also they all are bright
Explanation:
hopefully this helps
Answer: They are made of gases such as hydrogen and helium. They shine very brightly due to the interaction of hydrogen and helium at appropriate pressure and temperature. They contain iron in their cores which monitors the fusion reaction
Explanation:
please help.
1. When does it finish boiling
2. When does the potential energy come
PICK A LETYERY
Answer:
1. F 2. F
Explanation:
im not sure about the second one tho but im definitly sure about the first one :)
These structures are found in the nucleus of dividing cells they appear x -shapped
Answer:
Because each duplicated chromosome consists of two identical sister chromatids joined at a point called the centromere, these structures now appear as X-shaped bodies when viewed under a microscope. Several DNA binding proteins catalyze the condensation process, including cohesin and condensin.
Explanation:
Which two statements describe processes most likely to be involved in the
formation of sedimentary rock?
I A. Rivers flow across many miles into a body of water.
OB. A volcano erupts near a coastline.
OC. Tectonic plates push on each other underground.
O D. Windstorms blow regularly near rocky cliffs.
Answer:
the answer would be A and D
Explanation:
Rivers flow across many miles into a body of water
windstorms blow regularly near rocky cliffs.
thanks
I would greatly appreciate it if some can Please help me asap!!!
Which kind of root system would more likely benefit a desert plant----a taproot or a fibrous root system? Why?
Answer:
A taproot
Explanation:
A taproot will most likely benefit a desert plant because a taproot is a large long root that gets deep into the soil because in a desert the soul isnt fertile and is also sandy so a fibrous root system would be less beneficial because it will absorb less nutrients and will have a hard time clinging on a sandy soil while a taproot can reach further into the fertile part of the soil.
How long is the Lechuguilla cave?
An atom of argon contains 18 electrons. Describe how these electrons would be arranged. You may find
it helpful to draw a diagram.
Argon is a gas at 20°C (room temperature). Predict which state neon is at this temperature and give a
reason for your answer.
Answer:
a. The electrons are configured in a 2-8-8 order with 8 valence electrons. There are three full shells.
b. Because Argon and Neon are in the same group, they have very similar properties, so we can guess they would be in the same state. Neon would be a gas.
I don't get it,can someone help me?
Answer:
Out
Explanation:
If the mass is less that means there is less water on the inside of the cell and more water on the outside. also because there is less water outside the cell, due to the properties of osmosis, it would tracel out.
Explain the relationship between coral and algae, and how a problem with algae photosynthesis caused coral bleaching in the Great Barrier Reef.
How did water from the Great Barrier Reef affect ATP, NADPH, and sugars?
explain how you know that paraquat did not cause the coral bleaching.
Explain why you know that diuron caused the coral to bleach.
Answer:
mutualistic relationship.
paraquat is a herbicide.
Diuron is a algaecide.
Explanation:
mutualistic relationship is present between coral and algae. Paraquat did not cause the coral bleaching because paraquat is a herbicide which is used to kill weeds not algae. We know that coral have small algae attached to its body which is responsible for its colour so if we apply paraquat, it does not kill the algae and so coral bleaching did not occur. if we apply diuron which kills algae so it causes coral bleaching and the coral becomes white.