Answer:
A
variations in the population
Question 16 of 36
Following a sports injury, while the team physician is testing the stability of the lower leg it
slides forward unnaturally. This injury can be explained by a tear to the
A. Medial collateral ligament
B. Posterior cruciate ligament
C. Anterior cruciate ligament
D. Medial meniscus
E. Lateral collateral ligament
3. In the mid 1970s, Sherwood Rowland and Mario Molina predicted a thinning of the stratospheric ozone layer over Antarctica. The thinning was confirmed in the late twentieth century and has continued into the twenty-first century. (a) Identify the class of chemical compounds that is primarily responsible for the thinning of the stratospheric ozone layer and describe TWO major uses for which these chemicals were manufactured. (b) Describe how the chemical compounds that you identified in part (a) destroy stratospheric ozone molecules. You may include chemical equations as part of your answer. (c) Identify the major environmental consequence of the depletion of stratospheric ozone and describe TWO effects on ecosystems and/or human health that can result. (d) Ozone formed at ground level is a harmful pollutant. Describe TWO effects that ground-level ozone can have on ecosystems and/or human health.
Answer:
Chlorofluorocarbon.
Explanation:
Chlorofluorocarbon is the chemical compound that is responsible for the thinning of ozone layer present in the stratosphere. This Chlorofluorocarbon is used in the refrigerators and aerosol sprays. The major environmental consequence of the depletion of stratospheric ozone is the melting of glaciers in the Antarctica. It also has adverse effect on humans because it is responsible for the skin cancer disease in humans. Breathing ground-level ozone can trigger a variety of health problems such as chest pain, coughing, throat irritation, and congestion.
When do peppered moths hatch?
Answer:
Summer
Explanation:
Answer:
hatch in the middle of summer
Which of the following shows the proper order of a food chain?
producers --> carnivores --> decomposers --> herbivores
herbivores --> decomposers --> producers --> carnivores
producers --> herbivores --> carnivores --> decomposers
producers --> carnivores --> herbivores --> decomposers
Answer:
producers to herbivores to carnivores to decomposers
You are an aquatic biologist studying a small lake. The stream that drains into this lake runs by croplands. You are detecting a pesticide called atrazine in the insects and worms that live in the lake. The predatory birds such as herons and egrets have very high concentrations of atrazine in their blood. The birds prey on the frogs and small fish. What condition best explains the high atrazine level in the birds?
The condition best explains the high atrazine level in the birds is biological magnification. The correct option is D.
What is biological magnification?Biological magnification is the occurrence of any chemical in the body of a living organism than in outer space or the environment. The chemicals can be toxins or pesticides. They are present within the tolerant level in the tissue.
Here, the atrazine level is high in frogs and small fish than in the surrounding water, which is going in birds.
Thus, option D. biological magnification is correct.
The full question is attached in the image below:
Learn more about biological magnification, here:
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the four main types of macromolecules are organic. what does organic mean in this context.
A. it is made only of carbon
B. it is produced without the use of pesticides.
C. it is a very large molecule.
D. it is made from or produced by a living organism.
When does the separation of homologous chromosomes occur? A. Before Meiosis B. Meiosis 1 C. Meiosis 2 D. After Meiosis
Answer:
the answer would be c meiosis 2
Answer:
B. Meiosis 1
Explanation:
Just took the test
plsss help!..............
Answer:
hope this helps!
Explanation:
When a nerve impulse reaches the end of an axon, the axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. ... The binding allows the nerve impulse to travel through the receiving neuron.
source: https://flexbooks.ck12.org/cbook/ck-12-middle-school-life-science-2.0/section/11.41/primary/lesson/nerve-cells-and-nerve-impulses-ms-ls
Answer:
When a nerve impulse reaches the end of an axon, the axon releases chemicals called neurotransmitters. Neurotransmitters travel across the synapse between the axon and the dendrite of the next neuron. ... The binding allows the nerve impulse to travel through the receiving neuron
Which structure is found in both plant and animal cells?
Answer:
Cell membrane
Explanation:
Cell membrane is found in both animal and plant cells
Who were the scientists that came up with the shape of DNA?
Watson and Crick
Crook and Brown
O Gregory and Mendel
7
O None of the above
Answer the question
The table describes the properties of four compounds.
Which compounds are most likely ionic?
Explanation:
where is table...add pic
Answer:
the answer was A and D
Explanation:
here is a pic
Please help I’ll give brainliest
Answer:C
Explanation:
Answer:
magnesium
Hence the name of the element is magnesium?
is that right ?
What is deposited in the image?!
Answer:
I think it is nucleotide
all the cells in a multicellular organism are the same. True or False
Answer:
false
hope this helps
have a good day :)
Explanation:
What evolutionary feature will you expect to see in the tortoises on the island?
Answer: The most expectant evolutionary feature would be longer necks. This will enable the tortoises to reach the higher grass. This would occur through natural selection that would favor the extreme traits (alleles of long neck) of long necks in the population.
Explanation:hope it helps you
Answer:
The evolutionary feature you will expect you see in the tortoises on the island is longer necks.
Explanation:
Longer necks will be able to occur through natural selection. Tortoises would be able to reach for higher grass when grass isn't available from lower. This is a favorable trait.
is it more beneficial for humans to undergo sexual reproduction than asexual reproduction?
Answer:Advantages and disadvantages of sexual and asexual reproduction
Sexual reproduction involves two parents and the joining of male and female gametes during fertilisation. The offspring inherit a mixture of genes from both parents, so are different to each other and their parents.
The advantages of sexual reproduction:
produces genetic variation in the offspring
the species can adapt to new environments due to variation, which gives them a survival advantage
a disease is less likely to affect all the individuals in a population
In asexual reproduction there is only one parent. The offspring are clones of the parent and each other.
The advantages of asexual reproduction include:
the population can increase rapidly when the conditions are favourable
only one parent is needed
it is more time and energy efficient as you don't need a mate
it is faster than sexual reproduction
The disadvantages of sexual reproduction:
time and energy are needed to find a mate
it is not possible for an isolated individual to reproduce
The disadvantages of asexual reproduction include:
it does not lead to genetic variation in a population
the species may only be suited to one habitat
disease may affect all the individuals in a population
Examples in the natural world
Bacterial reproduction
Bacteria, such as E. coli, reproduce asexually. An advantage of this is that they can produce many bacteria very quickly. A disadvantage is that all of the bacteria are genetically identical. If an antibiotic was used on the bacteria, then all of them would die. The population would be wiped out. The only way for variation to be introduced into the population is by random mutation.
Rabbit reproduction
Most animals reproduce sexually, for example, rabbits. The process of sexual reproduction introduces variation into the species because the alleles that the mother and the father carry are mixed together in the offspring. A disadvantage is that sexual reproduction takes longer than asexual reproduction. A mate must be found, the egg must be fertilised by sperm, and then the offspring develop. The benefit of introducing genetic variation into the species, however, outweighs this disadvantage. If a disease were to hit the rabbit population, then perhaps not all of the rabbits would be affected because of the variation in the population. This means that some individuals would survive and be able to reproduce and generate more offspring.
Asexual and sexual reproduction in fungi
Some fungi are able to reproduce both sexually and asexually. Fungi reproduce using spores which they release into the environment. A new fungus will grow from the spore. The Coprinus cinereus fungus can produce spores by sexual reproduction to help create variation in the species. This method of reproduction is advantageous when the environment is changing because the variation introduced leads to an increase in the probability that a variant that can deal with the change. Coprinus cinereus also produces spores by asexual reproduction. These spores can be produced quickly and in large numbers to enable many individual fungi to develop. A disadvantage of these spores is that they generate offspring that are unlikely to be resistant to unfavourable conditions because they are all genetically identical.
Common inkcap mushrooms
Some mushrooms can carry out both asexual and sexual reproduction depending on their environment
Explanation:spores can be produced quickly and in large numbers to enable many individual fungi to develop. A disadvantage of these spores is that they generate offspring that are unlikely to be resistant to unfavourable conditions because they are all genetically identical.
Common inkcap mushrooms
Some mushrooms can carry out both asexual and sexual reproduction depending on their environment
Water molecules have a strong attraction to one another.
What property best describes this attraction?
Choose 1 answer:
A
Hydrophobic
B
Cohesion
C
Density
D
Adhesion
Answer:
The correct answer is B: Cohesion
Explanation:
Cohesion is the ability of water molecules to be strongly bonded together. This happens due to the polarity of water molecules. Since water is made up of two positive hydrogen ions that combine with one negative oxygen ion to form a hydrogen bond. Hence, the molecular structure of water enables hydrogen irons to attract oxygen ions that create a strong polar bond between water molecules.
Classify the glands as endocrine or exocrine glands.
sweat glands
pineal gland
sebaceous glands
adrenal gland
Answer:
glands
Explanation:
sweat = exocrine
pineal=endocrine
sebaceous = exocrine
adrenal = endocrine
Answer:
sweat-exocrine
pineal-endocrine
sebaceous-exocrine
adrenal-endocrine
An mRNA sequence reads: GAA/GCU/AUA/CUA/UGU. What would the effect on the amino acid be if the second codon read GCA instead, and the third codon read AAU ?
A) Silent mutation on both, no changes whatsoever.
B) Silent mutation on second codon, third amino acid changed from PHE to STOP
C) Silent mutation on AAU only. Third amino acid is now HIS
D) Silent mutation on second codon, third amino acid changed from ILE to ASN.
Answer:
D) Silent mutation on second codon, third amino acid changed from ILE to ASN.
Explanation:
Silent mutations are usually point mutation where you change one nucleotide. Since, the nucleotide changed is the third position, it does not affect the protein being manufactured (it will still put the amino acid Ala) [look up the codon redundancy on youtub.e to understand how awesome nature is!]
On the other hand, the other mutation introduced is Missense mutation where a different Amino acid is added due to change in codon (goes from ILE to ASN).
Develop an argument as to whether or not the structures and functions of the nervous system work to help prevent injuries. Use evidence and real-world knowledge to support your argument.
Answer:
Yes.
Explanation:
Yes, the structures and functions of the central nervous system work to help prevent injuries with the help of bone. The main line of defense of central nervous system is the bones of the skull and spinal column, which create a hard physical barrier to injury. If these line of defense are not present for central nervous system so it has more chances to get injury so we can say that the structures and functions of the nervous system helps to prevent injuries.
David was sitting in his hotel room reading a book, when he heard a knock at the door, and the sound of someone trying the door handle. He opened the door,
where he saw a man whom he had never seen before. The man said, "I'm terribly sorry... I thought this was my room. Wrong floor, I guess. He then walked
off down the hall toward the elevator. David went back into his room, thought about what had just happened, and then phoned the front desk, suggesting they
call the police, since the man at the door had obviously been a thief.
Why was David so sure the man had been a thief?
Answer:
if he thought that it was his own room, he wouldn't have knocked (because people don't knock on their own rooms)
A bucket of dirt! Dirt or soil is a mixture of many particles. Each kind of particle in a bucket of soil has unique properties. Here are
four particles that make up soil What property would you use to separate the four particles?
es )
Explanation:
A mixture having a uniform composition where the components can't be seen separately and all components are in the same state best describes a solution.
In chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
A part of an mRNA has the sequence AAA. Use the table below to figure out
which amino acid is coded for by AAA, then use the table to figure out which
change to this sequence would indicate a silent mutation.
UUG)
Messenger
Second base in codon
RNA Codons U
С
А
UUU UCU UAU
UGU
U
UUC
Phe
UCC UAC
UGC)
Cys
C
U
Ser
UCA UAA Stop UGA Stop A
Leu
UCG UAG Stop UGG Trp
CUU
CCU CAUT CGU
His
CUC CCC
CAC)
CGC
Leu
Pro
CUA CCA CAA
CGA
Gin
CUG CCG CAG
CGG
AUU ACUT
AAU
AGU
Asn
Ser
AUC lle ACC AAC) AGC
AUA ACA AAA
Lys
AGA
AUGStart Me ACG AAG)
AGGS
GUU GCU GAUI GGU
GUC
Asp
GCC
GAC
GGC
G
Val
Ala
Gly
GUA GCA GAAU GGA
Glu
GUG) GCG GAG) GGG
Arg
First base in codon
Focopo co poco pull
Third base in codon
A
Thr
Arg
O A. UAA
DACA
Answer:
AAG
Explanation:
is the silent one in this case
If an egg is fertilized and the embryo implants itself in the uterus, the ovaries will stop producing new eggs. Explain how the ovaries are signaled to stop egg production.
Answer:
Six to 10 days after fertilization, the embryo attaches, or implants, itself into the lining of the uterus. During the next week or so, the embryo receives its nourishment and oxygen from the cells that make up the lining of the uterus. The two layers of cells become more pronounced.
I WILL MARK BRAINLIEST
Answer:
A) Fossil Fuels, Minerals
Have a nice day!
Answer:
i think the answer is Minerals
Compare and contrast genetic engineering to the process of natural selection. Select all statements that
are true.
tinn aonetic engineer
Answer:
Explanation:
Genetic engineering is faster than the process of natural selection.
Natural selection is natural process and it works over generations, while genetic engineering involves desired modification of traits.
Both genetic engineering and natural selection work on all organisms, including humans.
Length of Day (how does it affect plants)
Day length helps plants to regulate their internal clock
source: g00gle
Answer:
When the day length is fewer than 10 hours, most plants do not grow. Even if the temperature is kept within the ideal range — say, in a climate-controlled greenhouse — most plants will go dormant until the magical 10 hours of sunshine per day arrives.
Explanation:
Why are certain amino acids called essential amino acids?
Which would NOT likely be used as evidence of evolution?
Answer:
what is there to pick from?
Explanation:
The option that does not provide evidence that living things have been evolving for millions of years is intelligence. The correct option is C.
What is evidence?In science, evidence refers to any observations, measurements, or facts that support or refute a hypothesis or theory.
Intelligence is not a factor that provides evidence for evolution. The process of evolution is driven by natural selection, genetic mutations, and other biological factors, not intelligence.
On the other hand, the other answer choices are all factors that provide evidence for evolution:
(A) Fossil record: provides evidence of changes in species over time.
(B) Natural variation within a species: provides the raw material for evolution to act upon.
(D) Homologous structures of living organisms: provide evidence of common ancestry and evolution over time.
(E) Similarities in embryological development: provide evidence of shared evolutionary history and common ancestry.
Thus, the correct option is C.
For more details regarding evolution, visit:
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Your question seems incomplete, the probable complete question is:
Which would NOT likely be used as evidence of evolution?
(A) fossil record (B) natural variation within a species (C) intelligence (D) homologous structures of living organisms (E) similarities in embryological development