Answer:
2 answers
Explanation:
-Evolution is a gradual change in the inherited traits of a population over many generations. Natural selection is a mechanism where the members of a population best suited to their environment have the best chance of surviving to pass on their genes.
- Evolution is the precessions by which population changed over time whereas natural selection is the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do
Which of the following is a secondary pollutant? (5 points)
carbon dioxide
carbon monoxide
sulfur dioxide
nitric oxide
nitrogen dioxide
Answer:
The answer is 1. Carbon Dioxide
Answer:
ozone
Explanation:
Explain what is different about how genetic
information (DNA) is stored in prokaryotes and
eukaryotes? *
Answer:
The main difference between eukaryotic and prokaryotic cells is that eukaryotic cells have a nucleus.
The nucleus is where cells store their DNA, which is the genetic material.
The nucleus is surrounded by a membrane. ...
Explanation:
All prokaryotes are single-celled (unicellular) organisms.
How do producers get the nitrogen they need to live and grown
Answer:
Nitrogen Fixation
It is carried out mainly by nitrogen-fixing bacteria, which secrete enzymes needed for the process. Some nitrogen-fixing bacteria live in soil. Others live in the root nodules of legumes such as peas and beans. ... They convert nitrogen gas to nitrate ions that algae and other aquatic producers can use.
Explanation:
EOC QUESTIONS
1. Which of the following best illustrates natural selection?
a. An organism with favorable genetic variations will tend to survive and breed successfully.
b. A population monopolizes all of the resources in its habitat, forcing other species to migrate.
c. A community whose members work together utilizing all existing resources and migratory routes.
d. The largest organisms in a species receive the only breeding opportunities.
2. In his book On the Origin of the Species, Charles Darwin described how species change over time. Which of the following is NOT part of his observations that describes the mechanisms of natural selection?
a. Organisms produce more offspring than can survive.
b. Disease and natural disaster will limit population growth.
c. Species today descended with modifications from ancestral species.
d. Organisms with advantages will survive and reproduce.
3. Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased. Which of the following describes a necessary condition for these changes in the finch populations to occur?
a. fewer mutations
b. limited food resources
c. limited beak variations
d. overproduction of offspring
4. Which of these would have the least effect on natural selection in a subspecies of giraffes that is geographically isolated from other subspecies of giraffes?
a. available niches
b. existing predators
c. chromosome number
d. available food resources
Q1. A. An organism with favorable genetic variations will tend to survive and breed successfully
Q2. C
Q3.b. limited food resources
Q4.c. chromosome number
Name five countries that are in the southern hemisphere
Answer:
Argentina, Bolivia, Chile, Paraguay, Peru.
Answer:
1. Argentina.
2. Bolivia.
3. Chile.
4. Paraguay.
5. Peru.
6. Uruguay.
Why can we predict seasons, moon phases, tides and constellations?
Which is the site of the most ATP production during cellular respiration?
O nucleus
O mitochondrion
O cytoplasm
O chloroplast
Answer:
b
Explanation:
What types of stems are in plants?
O Aerial
O Subterranean
O Acaulescent
O All of the above
Physical or behavioral traits that are best suited for an environment are
known as
Adaptations
Natural selection
Fitness
Diversity
how do cells use oxygen during cellular respiration
Answer:
In cellular respiration, cells use oxygen to break the sugar molecule. That releases the energy which is then transferred to an ATP (adenosine triphosphate) molecule. ATP is the fuel that cells need for energy. And where does cellular respiration happen?
Explanation:
In a DNA strand, you find that 20% of the bases are Adenine. What percentage of the DNA would be Cytosine?
Answer:
Yes
Explanation:Since adenine is 20%, then thymine is 20% as well. The total of both is 40%. From 100 remains 60% which is divided equally between guanine and cytosine, so each is 30%.
Ok i need this answered quick please
Answer:
530
Explanation:
magnification =image size /actual size=53/0.1=530
5.3cm =53mm
What process occurs during prophase I of meiosis?
1)random fertilization
2)separation of chromosomes
3)cytokinesis
4)crossing-over
Answer:
Separation of Chromosomes
Define specialization??
Plz help
Answer:
the process of concentrating on and becoming expert in a particular subject or skill.
"the division and specialization of labor"
a particular area which someone concentrates on or is an expert in.
plural noun: specializations; plural noun: specialisations
"an academic whose specialization was Romantic literature"
the adaptation of an organ or part to serve a special function or to suit a particular way of life.
"the way different muscles are constructed allows for specialization of function"
Explanation:
i got u my homie
What is the best way to prevent contracting the influenza virus?
A.taking antibiotics B.getting a vaccination C.Drinking lots of water D.treating water supplies
Answer:
B. Getting a vaccination.
Explanation:
B. Getting A Vaccination
Influenza virus It is a respiratory virus because it infects the respiratory tract including the nose, mouth, bronchi and can even go further into the lungs to the alveoli and cause pneumonia. A person will spread the virus through coughing or sneazing that become airborne droplets. When a suceptible person comes in contact and breathes in these droplets, it causes an infection.
Trust Me HAHA
The copper wire is cut into three pieces of unequal lengths. All three pieces of copper would have (1 point)
A the same mass
B the seſme physical properties
C different crystal structures
D different arrangement of atoms
B.) The same physical properties.
Also the copper wire would also have the same Chemical Properties. They wouldn't have a different arrangements of atoms because that would mean they are a different substance. They wouldn't have the same mass whereas they are now in 2 pieces. Copper is not a crystal meaning it would not have any crystal structures. That leaves the only applicable answer to be B. Also in case you need to find whether or not two identical substances are the same would be by testing the melting point, hardness and solubility. I just finished working on this section in my own 8th grade Science class so I think this should either help you now or later on.
Hope this helps.
-Northstar
Find out two types of water purification and name and describe them here.
Answer:
1. Reverse Osmosis
Reverse Osmosis works by forcing feedwater through a semi-permeable membrane.
A pump is used to apply pressure to reverse the normal osmotic flow across a membrane, meaning purified water molecules (permeate) are forced through the reverse osmosis membrane and recovered in preference to contaminants in the concentrated side which are left behind (reject concentrate).
2. Oxidisation
Oxidisation in the form of chlorination has been used as a means of water purification since the beginning of the last century. Hypochlorite is the key agent, achieving a disinfection of water by oxidising bacteria to eliminate waterborne diseases. Several different methods can be used to provide oxidation, including ozonation, chloramination, UV, bromination & chlorine dioxide. During the treatment, hydroxyl radicals are generated to destroy bacteria cells.
What is needed for dna replication select all that apply
Answer:
substrates, template, primer and enzymes.
Explanation:
The diagram of a cell shows some of its principal organelles. Drag the description of the function of the organelle indicated to the correct region.
100pts WILL GIVE BRAINLIEST
Answer:
4 is 1 6 is 2 3 is 3 5 is 4
Explanation:
i hope yo understand this
By using mutable collagenous tissue, what advantage do Echinoderms have?
Answer:
The properties of this connective tissue are mutable for a short period of time, under neural control, which provides certain mechanical advantages, which include the ability to maintain various postures without muscular effort; that is, it allows Echinoderms to change the consistency of the body, this is useful to escape predators or crawl along the seabed.
Explanation:
Echinoderms comprise the marine organisms known as starfish, sea urchins, sea cucumbers and sea lilies. These present, for the most part, benthic habits and are distributed from intertidal environments to deep bottoms and at different latitudes. They have a mutable collagenous tissue that allows them to change the consistency of the body, that is, they can rapidly change their stiffness and is involved in processes such as fission and autotomy. Some echinoderms quickly switch back and forth between being soft and stiff, which helps crawl along the seabed. Others twist only once from stiff to soft, letting a starfish cut off one of their arms to escape a predator, that is, they can drop an arm when attacked by a predator. When this happens it is called autotomy or autoamputation and the nervous system tells the mutable collagen tissue near the base of the arm to disintegrate. The wound heals and then the arm grows back, a process that can take weeks to months, depending on the species.
Answer:
saves energy
Explanation:
Mutable collagenous tissue is used to lock an Echinoderm into position.
clients who present skin abnormalities open pores or fever blisters should be rendered to a what?
Answer:
dermatologist
Explanation:
To determine if a particular plant is h0m0zygous or h8t8rozygous, you would have to test cross with a (h0m0zygous, H8t8rozygous) recessive.
i had to post it with the 0 and 8 bc it would let me say the actual word
Answer:
i'm not sure sorry
Explanation:
Answer:
h20
Explanation:
Why was Fisher skeptical of Mendel's data?
Answer:
It was too perfect
Explanation:
Which type of root system is found in grasses?
O Taproot system
O Fibrous root system
O Adventitious roots system
O Lateral system
Answer:
O Fibrous root system
Explanation:
I got it correct
once a cell becomes specialized, can it become any other type of cell? explain.
Answer:
a cell that has a specific job or function that carries out. -found in multicellular organisms (made of many cells) -once a specialized cell, it can not become any other cell.
Explanation:
Once a cell becomes specialized, it cannot become any other type of cell. This is because, this cell cannot form stem cells which have the ability to form different types of cells in the body.
Specialized cells are the cells which are designed to carry out a particular role in the body, such as that of red blood cells which are designed to carry oxygen gas in the blood. Nerve cells help in the contraction of muscles or the relaxation of muscles according to what the specific job we need them to do.
Cell differentiation is the process of specialization which lead to the formation of different organs such as brain, heart, and all other tissues from the single-cell zygote and the primitive, three-layered embryo.
Once a cell became specialized in the body, it was referred to as terminally differentiated cell. These cells cannot be turned back into a stem cell with the potential to become any type of cell in the body.
Learn more about Stem cell here:
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A heart attack happens when part of the heart muscles
dies or damaged
true
false
Explanation:
It is true, because whan heart muscle are damaged heart attack happened.
please Mark as BRAINLIST answer
Which sequence best explains the relationship between DNA and protein structure and function?
Answer:
DNA base triplets → amino acid sequence → protein folding pattern → protein shape and function
DNA sequence provides the code for the amino acid sequence. The amino acid sequence determines the protein structure, which affects the protein's function.
What is the relation between DNA and protein?The relation between DNA and protein can be described as follows:
DNA carries the genetic code: DNA is made up of a long chain of nucleotides, which are the building blocks of DNA. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. There are four types of nitrogenous bases in DNA: adenine, guanine, cytosine, and thymine. The sequence of these bases carries the genetic code that provides the instructions for the synthesis of proteins.
DNA is transcribed into RNA: The DNA code is transcribed into a complementary RNA (ribonucleic acid) molecule through a process called transcription. RNA is similar to DNA, but it is made up of a different sugar (ribose) and a different nitrogenous base (uracil).
RNA is translated into protein: The RNA molecule is then translated into the amino acid sequence of a protein through a process called translation. This involves the use of transfer RNA (tRNA) molecules, which carry specific amino acids and bind to the RNA molecule at specific codons (sequences of three nucleotides). The sequence of codons in the RNA molecule determines the sequence of amino acids in the protein.
Protein structure determines function: The amino acid sequence of a protein determines its three-dimensional structure, which in turn determines its function. Proteins can have a variety of functions in the body, including catalyzing chemical reactions, transporting molecules, providing structural support, and regulating cell function.
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Which statement about the relationship between an organism's traits and its genes is true?
A.
Genes code for proteins that determine an organism's traits.
B.
Genes code for the DNA that determines an organism's traits.
C.
An organism's genes are a direct result of its inherited traits.
D.
Traits code for the proteins that determine an organism's genes.
Answer:
A
Explanation:
Answer:
B
Explanation:
Genes code for the DNA that determines an organism's traits.
i need some help asap
Answer:
B) Nucleotides that stores the code for proteins
Explanation:
RNA and DNA are polymers made of long chains of nucleotides
If a plant cell is placed in hypotonic solution, it becomes
Answer:
I don't know
Explanation:
can you help me with this question The following lines from Frost's "The Road Not Taken" indicate what about the Speaker? Line 2: And sorry I could not travel both Line 3: And be one traveler long I stood A. The spaaker is waiting for someone TOT a long time ("long I stood"). B The speaker is traveling by himself- just "one traveler." C. The speaker is sorry he can't travel both roads
Answer:
turgid
Explanation:
When the plant cell is placed in a hypotonic solution , it takes up water by osmosis and starts to swell, but the cell wall prevents it from bursting.
HOPE IT HELPS :)