Answer:
troposphere
Explanation:
The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.
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Which of the following units are repeatedly joined together to form a strand of DNA?
Answer:
Nucleotides
Explanation:
The nucleotides forming each DNA strand are connected by noncovalent bonds called hydrogen bonds.
Nucleotide is the unit that repeatedly joined together to form a strand of DNA.
What is DNA?Deoxyribose + phosphate group + thymine could be a nucleotide of DNA and defined as deoxyribonuclic acid and it is a polymer made up of two polynucleotide chains that arranged in foiled structure to form a double helix carrying genetic information for the various processes such as growth development functioning and reproduction.
There are four nitrogen bases of DNA nucleotides are such as adinine, thymine, guanine and cytosine.
Friedrich miescher discovered DNA in the year of 1860.The shape of DNA is double helical structure
The main function of DNA is to carry information from one generation to another generation this is the reason due to which DNA is also known information molecule.
In our body DNA is found in the nucleus of the cell and it is known as nuclear DNA. The shape of DNA is double helical structure.
Siblings share only about 50% of same DNA due to the reason of recombination. The life span of DNA is 521 years.
Therefore, Nucleotide is the unit that repeatedly joined together to form a strand of DNA.
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1.Which of the following is an example of nature's leftovers? Oa snake eating an entire mouse carrots left underground after the leaves have been eaten aboveground O a bird eating an entire earthworm a plant growing in a garden
Answer:
i choose O2
Explanation:
a bird eating an entire earthworm a plant growing in a garden (confused)
an earthworm and a plant are both products of nature and that is normal between nature's survival for the fittest so a plant eating an earth worm is way of showing nature's leftovers of the earth worm and plant
When someone tosses an object towards your face, you blink. This response is controlled
by
O A. amino acids
B. the immune system
C. hormones
a
O D. the nervous system
Answer:
D. the nervous system
Explanation:
This system of your body controls your reflexes! :D
Answer:
Nervous system
Explanation:
The nerve receptors responsible for transmission of impulses to the brain are a part of nervous system.
The_____ side of a sand dune is the side without wind.
O deflation
slip face
Owindward
Oshear
Answer:
slip face is the answer
Answer:
Slip face
Explanation:
The two sides of a sand dune are the windward side and the slip face side. The slip face side is the side without wind. Accumulation of sand occurs on the windward side.
Which of the following is NOT a part of Cell Theory
All cells come from pre-existing cells
Cells are the basic units of structure and function in living things
All living things are composed of one or more cells
Cells can't be created or destroyed
Answer:
from my point of view the answer should be self can't be created or destroyed
If a section of DNA experiences base mutation at a predictable rate, then ________________.
Answer:
your answer would be These external agents of genetic change are called mutagens. Exposure to mutagens often causes alterations in the molecular structure of nucleotides, ultimately causing substitutions, insertions, and deletions in the DNA sequence.
i don't know if this is correct or not let me know please.
Explanation:
Cellular (aerobic) respiration takes place in the presence of and with the use of a certain element.
Which element is it?
carbon dioxide
water
sunlight
oxygen
Answer:
It's oxygen
Explanation:
The oxidation of glucose takes place which simply means burning in oxygen. So...
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help! i really need help on a, b, c, d, e, f!
Answer:
a) 12 brown eyes
b) 12 brown hair
c) 3 Brown eyes blonde hair
d) 9 brown eyes brown hair
e) 3 blue eyes brown hair
f) 1 blue eyes blonde hair
What provides the energy to add the phosphate group back to ADP to form
ATP?
O oxygen we breathe
O excercise
O ATP in food we eat
O the food we eat
Answer:
D
Explanation:
I think that's the answer :)
What is the function of the eukaryotic cell?
Answer: Eukaryotic cells have a true nucleus, which means the cell's DNA is surrounded by a membrane. Therefore, the nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.
Explanation: Mark as brainllest
Answer:
their functions are different depending upon their location and organism in which they are. for example the cells of stomach wall release mucous, similarly the cell of pancreas release pancreatic juice. and the sieve tube cells help in water transfer from source to sink.
So, all this just depends upon their location and area of labor you can say. Ig i took this last year so i don't remember much
Why have plants in the alpine biome adapted to survive on limited nutrients?
Answer:
The soil in the alpine biome is rocky and nutrient poor. Plants that live in the alpine biome must be suited to the nutrient poor soil.
Explanation:
The plants living in the alpine biome are adapted to survive on limited nutrients as the conditions in the alpine biome is harsh and not favorable. Hence, the plants have to adapt the mountain climate.
What are adaptations?An adaptation is any physical or behavioral feature of an organism that helps them to survive better in their environment. In other words, an adaptation is something that helps them in finding food, water, mates, and shelter.
The alpine climate is the typical climate for elevations above the tree line, where the trees fail to grow due to cold conditions. The climate of alpine biomes is also referred to as the mountain climate or highland climate.
Plants which are living in alpine biomes are typically low growing due to the extreme environmental conditions. There are only about 200 species of alpine biome plants which have adapted to life in cold temperatures and sparse rainfall.
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please answer quick! may give brainliest
What compound makes up carbohydrates?
a.
glucose
c.
amino acids
b.
nucleic acids
d.
phosphates
Answer:
a .glucose...
Explanation:
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Explain the steps (5) that would need to take place for primary succession to occur.
Answer:
The labels I-VII represent the different stages of primary succession. I-bare rocks, II-pioneers (mosses, lichen, algae, fungi), III-annual herbaceous plants, IV-perennial herbaceous plants and grasses, V-shrubs, VI-shade intolerant trees, VII-shade tolerant trees.
Explanation:
is protein a living cell or a virus
Answer:
Neither.
Explanation:
Proteins are molecules composed of carbon, hydrogen, oxygen, and most importantly one or more chains of amino acids. They are vital to living cells and are required in the process of making, repairing, and composing functioning tissues as well as helping them function.
I hope this helps! :)
what is short transfer cell in the tip of leaf?
02.01 properties of water
Answer:
i know only 3 properties
Explanation:
colourless
odourless
tasteless
1. A substance that destroys pathogens that are outside of the body.
Answer:
It can be things like bleach, soap, or vinegar.
Explanation:
Answer:
Antiseptic
Explanation:
Chemical such as soap, vinegar, or rubbing alcohol that destroys pathogens outside of the body.
what is ecosystem
please say
Answer:
[tex] \boxed{ \text{below \: in \: bold}}[/tex]
Explanation:
[tex] \huge{ \underline{{ \text{Ecosystem}}}}[/tex]
No living beings can survive alone. There always exists a close relationship between living and non - living things. The environment of the earth consists of physical and biological factors. The physical and biological factors together constitute an ecosystem. The ecosystem may be natural or artificial , temporary or permanent. Thus, an ecosystem is an ecological unit which consists of both biotic ( living ) and abiotic ( non - living ) factors of the environment. The organisms and the environment are inseparably interrelated and interactive in their nature. A.G. Tansley ( 1935 ) , a British ecologist used the term ecosystem first.
Hope I helped!
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_________
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what element is in period 6, group 17
It is element At, or Astatine. Number 85 on the periodic table
What kind of protist causes dysentery?
A euglena
B amoeba
C algae
D slime mold
Answer:
D
Explanation:
which of the following statements describes a proton of an atom?
a. has a negative charge and is located in the nucleus
b. has a positive charge and is located in outer energy levels
c. has no charge and is located in the nucleus
d. has a positive charge and is located in the nucleus
Answer:
d. Has a positive charge and is located in the nucleus
Memory technique:
Think of the "p" and proton and the "p" in positive.
Think of the "neu" in neutron and "neu" in neutral.
Think about electrons and electricity. Touching something "elec"tric would hurt, or give you negative feelings.
Electrons revolve around the cell while protons and neutrons are a part of the nucleus because negative and positive things would not get along.
That's all I have! I hope this helps with your studying. Happy learning, friend! :)
Hhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeelllllllllllllllllllllllllllppppppppppppppppppppppppppppppppppp
Brainliest answer
How much time will 48.5 million years ago will be at an specifici year.
Proper question or report
Answer:
the report gives particular attention to conditions in low- and ... However, appropriate care for people with NCDs is lacking in many settings, ... By 2020, this number will increase to 7.5 million, accounting for 10% of all ... people ≥ 30 years old with a 10-year risk of fatal or nonfatal cardiovascular events.
Explanation: hope it helps
Answer: Well, it is not determine how much exactly would 48.2 million years ago, but I believe this will be by the beginning of Eocene Period.
Hope this helps;)
Which of the following substances is NOT able to simply diffuse across the 1 point
plasma membrane?*
Water
Oxygen
Carbon Dioxide
Sodium
Answer:
Sodium
Explanation:
because ions have a charge which prevents them from moving across the cell membrane through simple diffusion
Circle the letter of each molecule that makes up the sides of the DNA
ladder.
a. deoxyribose
b. glucose
c. phosphate
d.oxygen
Answer:
a. deoxyribose
Explanation:
Our solar system is in the _______ arm of the Milky Way galaxy, 28,000 light years from its center.
Answer:
Orion arm
Explanation:
Which of the following statements is true?
Animals cannot make their own food because they do not have vacuoles.
When you eat a carrot, you are eating ground tissue.
The main function of dermal tissue is photosynthesis.
The cerebrum controlls balance and coordination.
Answer:
when eating a carrot u r eating ground tissue
Answer:
when you eat a carrot, you are eating ground tissue is your answer
Explanation:
hope it helps
sorry i'm late to
You are studying three populations of an endangered species of toad that used to be common in the California central valley. Global warming has caused this species to retreat to higher elevations in recent decades where it stays cooler; the toad used to be found throughout the valley, but is now restricted to the tops of three mountains. Historical records indicate that there used to be hundreds of thousands of toads in the central valley, but sampling the mountaintops reveals that the toad population on each is now limited to a few hundred individuals. You survey allozyme diversity at one locus on each of the three mountaintops and find that each population is fixed for a different allele of the ribbit gene: mountain #1 is fixed for the A1 allele, mountain #2 for the A2 allele, and mountain #3 for the A3 allele. The average number of baby toads born in each population is the same, and the environment on each mountaintop is very similar, as far as your data show.
Explain why each population is fixed for a different allele.
Sentence 1: Describe the variability that was initially present in each of the populations.Sentence 2: State which individuals had the highest fitness in a given population, or why fitness is not an issue if that is your conclusion.Sentence 3: Explain what evolutionary force acted on the population(s), and why and how it acted.Sentence 4: Describe how the populations evolved in response to their changing environment. Be as specific as you can (e.g., say "increased" or "decreased", rather than just "changed".)
Answer:
Explanation:
The allele are fixed because there is no variation that exist in the population and the allele are almost completely the same hence no new combination of gene the same Allele will continue to reoccur
Variability exist because of random mating that occurs in the population initially when the toad filled up the entire central valley
Random mating ensures fitness in the initial population
Genetic drift acted upon the population drifting away allele that are very few in population or that occur less in the population and perpetuating alleles that frequently occur leading to a fixed allele.
There was a decrease in the population as a result of the change in the environment.
the part that form of fruit after fertilization
Answer:
Ovules
Explanation:
After fertilization occurs, each ovule develops into a seed. Each seed contains a tiny, undeveloped plant called an embryo. The ovary surrounding the ovules develops into a fruit that contains one or more seeds.
Hope this Helps
The images below show the same cell, before and after reaching equilibrium. Which statement best describes what happened as the volume of the cell increased
The missing part of the question and group of options is attached as an image.
Answer:
The correct answer is - D - The number of solvent particles outside the cell decreased.
Explanation:
As the solution reached equilibrium the concentration of the solute is equal inside the cell and outside the cell, so the number of particles of the solvent must increase inside and decrease outside of the cell.
The cell volume increased due to the flow of the solvent from outside to the inside of the cell this type of diffusion of solvent is known as osmosis which leads to the swollen or bigger cell.
Answer:
The number of solvent particles outside the cell decreased.
Explanation:
I need help doing this
Answer:
By releasing CO2 it would warm the planet and help plants grow. But realising too much would be one cause of global warming. Also, more CO2 in the atmosphere would cause the ocean water to become more acidic, putting marine life in danger.
Explanation: