Use the scenario to answer the following question.
A forest ecosystem is home to mountain lions, coyotes, bobcats and deer.The deer eat grass. The mountain lions, coyotes, and bobcats eat deer. Hunters began killing large numbers of mountain lions, coyotes, and bobcats. About twenty years later, the deer population had largely increased. The teacher asked the students to explain why the population of deer had a large increase in population size.
Which student’s argument MOST accurately explains the increase in the deer population?
A. Student 2: The number of deer increased because without mountain lions, coyotes, and bobcats, the deer lived longer and had more offspring that also lived longer.
B. Student 3: The number of deer increased because with fewer mountain lions, coyotes, and bobcats, the deer had more food available to eat.
C. Student 1: The number of deer increased because deer populations are always increasing, even when there are mountain lions, coyotes, and bobcats preying on them.
D. Student 4: The deer population increased because with fewer mountain lions, coyotes, and bobcats, there was less competition within the deer population.
Answer:
A
Explanation:
The mountain lions, coyotes, and bobcats control the deer population hence in their absence the deer life span increased.
which reason best explains why carbon is able to form macromolecules?
A. carbon is a very large element
B. carbon can bond with many elements
C. carbon is found in all living things
D. carbon is found in energy storing molecules.
The effect of cholesterol on membrane fluidity at physiological temperatures is to Choose one: A. prevent lateral movement of phospholipids and thereby decrease membrane fluidity in that region. B. maintain membrane fluidity due to exclusion of saturated glycerophospholipids. C. rigidify membranes by forming a complex that bridges the inner and outer leaflets. D. maintain membrane fluidity through its disruption of fatty acid packing.
Answer:
The correct answer is D. maintain membrane fluidity through its disruption of fatty acid packing.
Explanation:
Cholesterol is a steroid lipid and is a constituent of biological membranes. It regulates the fluidity of the membrane (so, option C is not correct). Since cell membranes are composed of another type of lipids, the phospholipids, which form a bilayer, cholesterol distributes between the phospholipid tails and avoids these molecules pack each other forming rigid clusters. Thus, the option which better explains the effect is D. maintain membrane fluidity through its disruption of fatty acid packing.
id- 5121786233 p/w- tepQ3w
Answer:
I need 1 Brainliest before I can become Virtuoso
Explanation:
Answer:................. I just needed the points so I can get help on my math work........
Explanation:
What
type of mutation causes this the sequence AGTATA to become AGTATTA
Answer:
Insertion
Explanation:
Mutation is generally referred to as any change or alteration that occurs to the nucleotide sequence of a gene. There are several types of mutation depending on how it occurs. The types of mutations are; substitution, insertion, deletion, etc.
Insertion mutation is a type of mutation in which one or more nucleotide base is added a sequence. This is the case in this question about an original sequence that reads: AGTATA. We then have the mutated sequence as follows: AGTATTA
Notice that, nucleotide "T" has been added in between T and A. Hence, a type of INSERTION mutation.
describe the process of transformation from start to finish. Be sure to use the following terms in your response: restriction enzyme, ligase, plasmid, DNA, protein, gene, and sticky ends, and recombinant DNA.
The process of transformation are as follows:
restriction enzymes are used to cut the desired DNA from the organism as well the plasmid producing sticky endsThe plasmid is then inserted into the host organism.The host organism incorporates the plasmid producing recombinant DNA. The recombinant DNA is expressed by the host organism to produce proteins. What is transformation?Transformation is the process whereby genetic material from another organism is incorporated into the nucleus of another organism.
The steps in transformation are as follows:
restriction enzymes are used to cut the desired DNA from the organism as well the plasmid producing sticky endsThe plasmid is then inserted into the host organism.The host organism incorporates the plasmid producing recombinant DNA. The recombinant DNA is expressed by the host organism to produce proteins.Learn more about recombinant DNA at: https://brainly.com/question/91488
What is the answer please help no links I will report
Answer:
Limpets
Explanation:
Since the arrows represent flow of energy, and there is no path of energy from fish to limpets, limpets won't be affected at all.
Helicase is an enzyme responsible for unwinding the double helix of the DNA by breaking apart the hydrogen bonds between each of the base pairs. Which phase of the cell cycle is helicase most likely active? s M G1 G1
Answer:
G1 Phase
Explanation:
(b) Many amphibian species throughout the world are endangered
Suggest three reasons why many amphibian species are endangered
Answer:
The correct answer is - habitat loss, pollution and disease, and climate change.
Explanation:
Many amphibians are endangered due to several reasons including, habitat loss, climate change, pollution and disease, non-native species invasion, and many others. Amphibians are mostly live in damp habitats or moist soil and low-level water and these habitats are destroys due to pollution, deforestation or excess fishing.
Pollution and disease also affect these species most specifically chytridiomycosis, caused by the chytrid fungus was an epidemic for many amphibians. Climate change also affects the temperature and soil quality precipitation of the habitat that not suitable for these species.
A forest fire destroys an area. Asmall population of trees and a large population of birds are both affected.
Which type of limiting factor causes this?
A. density dependent
B. Hensity independent
C.opulation dependent
D. opulation independent
HELP PLS!!!
can omega 3 be artificially produced?
Your Answer:
Hello there My name is Tobie and I would be more than glad to help!After a thorough examination Your answer should be No Omega 3 or (omega-3 fats and n-3 fats) Cannot be artificially produced.
Here's why.
The reason Omega 3 cannot be created is because These are essential fats.The body can make Omega 3 but it cannot be made from scratch again also because they are essential fats .Ways the body can create Omega 3 is by eating foods that already contain Omega 3.Here are some foods that contain Omega 3 !
Fish, vegetable oils, nuts, flax seeds, flaxseed oil, and leafy vegetables.FAQS
Do avocados have Omega 3?
Avocados contain vitamins C E K and B6 some other nutrients as well to they also contain omega-3 fatty acids. But most of the calories in a avocado come from fat.
Why Omega 3 is bad for you?
Yes this plays a significant role in our diet by helping us improve our cardiovascular health having but too much of it can lead to having high blood sugar and a increased risk of bleeding.
Hope this helps!
-Tobie the dog <3
what is applied microbiology
Definition. Applied microbiology is a scientific discipline that deals with the application of microorganisms and the knowledge about them. Applications include biotechnology, agriculture, medicine, food microbiology and bioremediation.
Cichlids, a type of fish, were introduced to a lake around 200 years ago. Over the years, the fish have developed into two distinct groups. One group stays in the main lake and the other group resides in the streams that flow into it. Both groups of cichlids breed in the same streams at the same time of year. However, the groups are splitting into two genetically and physically different types of fishes. How would you classify this type of speciation
Answer:
sympatric speciation
Explanation:
Different sympatric species have the same closest ancestor and live in the same area but inhabiting different niches.
The steps for sympatric speciation are:
An ancestral species inhabit a geographic area.With time, different populations of the same species occupy different niches or microhabitats in this general area. As the microhabitats are different, they have different environmental pressures that are acting on each population.These pressures lead to the origin of differences between groups, which need to adapt to each environmentEach population suffers genetic changes due to environmental conditions. These changes are inheritable.With time, these differences drive to the final complete divergence of populations, becoming different species and reproductively isolated.In sympatric speciation, the interruption of genetic flow must be fast, and there must be differences in niches so no species can compete and displace the other species. Speciation occurs in the same distribution area of the original species. The new species originate in a place with no physical barriers but different environmental pressures.
In the exposed example,
The introduced Cichlid fishes 200 years ago → Original species and the common ancestor between the new derivated speciesThe lake → general geographic areaThe main lake and the streams → Microhabitats or niches with different pressures eachThe groups are splitting into two genetically and physically different types of fishes. They do not mate. There is no genetic flow between groups. → Speciation process.Describe the similarities and differences between plant and animal cells
Answer:
Plant cells have a cell wall and a cell membrane.
In plants, the cell wall surrounds the cell membrane.
Animal cells have a cell membrane but no cell wall.
Plant cells have cytoplasm.
Both have a nucleus.
Chromosome's tightly coiled structure enables them to be
properly segregated during ____
Answer:
Chromosomes are coiled structures made of DNA and proteins. Chromosomes are the form of the genetic material of a cell during cell division. It is this coiled structure that ensures proper segregation of the chromosomes during cell division. During other phases of the cell cycle, DNA is not coiled into chromosomes
Chromosomes' tightly coiled structure enables them to be properly segregated during cell division.
Chromosomes:Chromosomes are coiled structures made of DNA and proteins.Chromosomes are the form of the genetic material of a cell during cell division. It is this coiled structure that ensures the proper segregation of the chromosomes during cell division.During other phases of the cell cycle, DNA is not coiled into chromosomes. It exists as a grainy material called chromatin.
Thus, we can conclude that during cell division chromosomes' tightly coiled structure enables them to be properly segregated.
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Given the strand of DNA with the sequence : G-A-C-A-T-T-C-C-G...
Column A
Column B
1.
What is its complementary strand?
a. C-T-G-T-A-A-G-G-C
2.
b. G-A-C-G-A-T-T-C-C-G
Which sequence represents and insertion /
addition?
Which sequence represents a deletion?
3.
C. G-A-C-T-A-T-C-C-G
4.
d. G-A-C-A-T-C-C-G
Which sequence represents an inversion
mutation?
Answer:
1. Given the DNA sequence: G-A-C-A-T-T-C-C-G, the complementary sequence is C-T-G-T-A-A-G-G-C (a).
2. Given the DNA sequence: G-A-C-A-T-T-C-C-G, the insertion sequence is G-A-C-G-A-T-T-C-C-G (b).
3. Given the DNA sequence: G-A-C-A-T-T-C-C-G, the deletion sequence is G-A-C-A-T-C-C-G (d).
4. Given the DNA sequence: G-A-C-A-T-T-C-C-G, the inversion sequence is G-A-C-T-A-T-C-C-G (c).
Explanation:
The complementary sequence of DNA is a sequence of complementary nucleotides. The complement is a nitrogenous base that correctly pairs with the base that is given. In DNA, Adenine (A) correctly pairs with Thymine (T), and Guanine (G) with Cytosine (C). Therefore, the complement of A is T, and of C, is G.
The given sequence complement would be C-T-G-T-A-A-G-G-C since it's a sequence of bases that correctly pairs with the given sequence, G-A-C-A-T-T-C-C-G. [ G-A-C-A-T-T-C-C-G | C-T-G-T-A-A-G-G-C ] Notice that the first base in the sequences is G and C respectively. The next two are A and T. The paring is such that C complements G, and that A, T.
2. An insertion sequence is one in which there is an extra added nucleotide or codon. [ G-A-C-A-T-T-C-C-G ] Notice that there are three Triplets in this sequence. In a case where there is an extra nucleotide(s) or codon(s), such is termed an insertion mutation. When the given sequence is compared with the sequence in option b, G-A-C-G-A-T-T-C-C-G, you can observe an extra nucleotide [G - the fourth letter in the sequence]. Therefore, this sequence is called an insertion sequence.
3. Deletion mutation is an error in the DNA replication process that removes a nucleotide(s) from the genome. Hence a sequence that has a nucleotide(s) removed from the original sequence is called a deletion sequence. With the given sequence, G-A-C-A-T-T-C-C-G, the deletion sequence to this is G-A-C-A-T-C-C-G. [G-A-C-A-T-C-C-G ] Notice that one of the nucleotides, T, is missing.
4. Inversion mutation is a chromosome rearrangement in which a chromosome is reversed end to end. This involves breaking and rearrangement within a sequence. With the given sequence, G-A-C-A-T-T-C-C-G, an inverted sequence is G-A-C-T-A-T-C-C-G. [ G-A-C-T-A-T-C-C-G] Notice the first two nucleotides, of the second codon (....-T-A-T-...). The original sequence has....-A-T-T-...., but the new sequence here has...-T-A-T-.... Suggesting that the first two nucleotides were broken and rearranged end to end.
Which of the following parent combinations could result in a type o blooded child?
Answer:
1 parent heterozygous A and 1 parent heterozygous B
Explanation:
One parent already has O and then the other is AB so its not a full dominate
1 parent heterozygous A and 1 parent heterozygous B could result in a type O blooded child. So, the correct option is D.
What is Blood group?A blood type is defined as a classification of blood that is based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells. These antigens can be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system.
There are 4 main blood groups which are- A, B, AB and O. Blood group is determined by the genes inherited from the parents. Each group can be RhD positive or RhD negative, which means there are 8 blood groups in total.
For the above example, when Heterozygous A blood group parents crossbreed with Heterozygous B blood group parents that is AO and BO respectively. AB, BO, AO and OO blood groups from the cross produce offspring.
Thus, 1 parent heterozygous A and 1 parent heterozygous B could result in a type O blooded child. So, the correct option is D.
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Plant 1 was grown in the dark. Plant 2 was grown in the light.
What can you conclude about the growth of these plants?
A. The environment can affect physical features.
B. The environment determines all physical features.
C. The environment plays no role in the growth of plants.
D. The environment will always allow all types of plants to grow
In summer squash, white fruit (H) is dominant over yellow (h), and the flattened disc-shaped fruit (D) is dominant over the spherical fruit (d). Examine this cross: HHdd x hhRD, and answer the following questions. (You can use a Punnett square to answer the questions, but you do not need to include it on this worksheet. If you do, it will not be graded.)
a) Does this cross represent a monohybrid cross or a dihybrid cross?
b) What percentage of the offspring from this cross are expected to have the HHDD genotype?
c) What percentage of the offspring from this cross are expected to have the hhDD genotype?
d) What percentage of the offspring from this cross are expected to have the HhDd genotype?
e) What percentage of the offspring from this cross are expected to produce white and disc-shaped fruits?
f) What percentage of the offspring from this cross are expected to produce white and spherical fruits?
g) What percentage of the offspring from this cross are expected to produce yellow and disc-shaped?
Answer:
a. It is a dihybrid cross
b. 0%
c. 0%
d. 0%
e. 100%
f. 0%
g. 0%
Note: Answers are given assuming that hhRD = hhDD
Explanation:
a. The cross, HHdd x hhDD is a dihybrid cross involving two traits: fruit colour and fruit shape
2. Gametes produced in the cross are given below:
for HHdd= Hd and Hd
For hhDD = hD and hD
Offspring produced in the cross:
All HhDd, which represents white and the flattened disc-shaped fruit white since They are both dominant characters.
b. Percentage of the offspring from this cross expected to have the HHDD genotype = 0%
c. Percentage of the offspring from this cros expected to have the hhDD genotype = 0%
d. Percentage of the offspring from this cross expected to have the HhDd genotype = 0%
e. Percentage of the offspring from this cross are expected to produce white and disc-shaped fruits (HHDD or HhDD or HhDd) = 100%
f. Percentage of the offspring from this cross expected to produce white and spherical fruits (HHdd or Hhdd) = 0%
g. Percentage of the offspring from this cross expected to produce yellow and disc-shape (hhDD or hhDd) = 0%
HELP PLZ ASAP GIVING BRAINLIEST!!
Answer:
what do they mean when they say "spheres" ???
It could be the lithosphere (land) hydrosphere (water) and the atmosphere (air)
Explanation:
if the water molecules are evaporating then there's obviously water involved (hydrosphere)if the water started to evaporate from the ground then lithosphere is involved, too. and the water is rising into the atmosphere, also.
During a hectic moment in the ER, Robin received a needle stick from a hyperdermic used on the patient. She later was diagnosed with Hepatitis B. This would be an example of what type of transmission?
Answer:
Fomite Transmission
Explanation:
The type of transmission used as an example in this scenario would be Fomite Transmission. This is when an inanimate object that has been in contact with a disease becomes contaminated and then comes into contact with an individual. In this scenario, once the needle was used on the patient that had Hepatitis B it immediately became contaminated. Then by accidentally being stuck by the needle, Robin became infected as well as the disease was transmitted from the needle into her bloodstream.
Explain Darwin’s theory of evolution
Answer:
Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.
Explanation:
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RR = Red WW = White RW = roan
1. A roan cow is crossed with a red cow.
What percent of the offspring will be red?
2. A red cow is crossed with a white cow.
What percent of the offspring will be roan?
3. A roan cow is crossed with a white cow.
What percent of the offspring will be roan?
What percent will be red?What percent will be white?
How many layers are in a gram positive cell wall and how many are in a gram negative cell wall ?
The cell wall of gram-negative bacteria is thin (approximately only 10 nanometers in thickness), and is typically comprised of only two to five layers of peptidoglycan, depending on the growth stage. In gram-positive bacteria, the cell wall is much thicker (20 to 40 nanometers thick).
what elements cycle between living and non living organisms?
Explanation:
The ways in which an element—or compound such as water—moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle. Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.
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Elements that cycles between living and nonliving things are as follows: water, carbon, nitrogen, oxygen, phosphorus, and sulfur.
BIOGEOCHEMICAL CYCLES:
Elemental substances are examples of matter, which are transferred from one form to another in the ecosystem. The movement of these elements between living organisms and their environment is termed biogeochemical cycle.Elements that are involved in the biogeochemical cycle are as follows: water, carbon, nitrogen, oxygen, phosphorus, and sulfur. This means that these six elements move between living and nonliving sources. Water makes up the most part of the body of living organismsCarbon is a major component of the organic matter of living organismsNitrogen is a key component of nucleic acids and also found in the soil as nitratesPhosphorus is the key component of the energy molecule- ATP in every living organismSulfur is a component of some amino acids, and also released into the atmosphere during burning.Learn more: https://brainly.com/question/1204069
The offspring of the round-seed allele and the wrinkled-seed allele will have the ___________ phenotype
Answer:
4738hrjeifgt47ruj3
Explanation:
Why does the lake need to be older than the canyon for the spillover theory to work?
Answer: Over thousands of years, the water filled one basin and then spilled over into the next, like a series of bathtubs overflowing.
Explanation:
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Which of the following is most likely the reason why there are more long beaked woodpeckers than short-beaked woodpeckers in an environment?
The long-beaked woodpeckers are more attractive to predators.
The long-beaked woodpeckers have more flight stability.
The long-beaked woodpeckers can reach more insects in tree bark.
The long-beaked woodpeckers reproduce in smaller numbers.
Answer:the answer is c
Explanation:as having a longer beak allows the woodpecker to reach more bugs within the tree meaning they can survive and also provide for the offspring with the more insects it can reach
The supporting paragraphs in a research essay are built on:
A. your opinions about works of literature.
B. accepted rhetorical conventions.
C. bibliographical entries to your works-cited list.
O D. the information you gather during the research process.
Answer:
D
Explanation: