Answer:
4.Compare: How does the spread of a foodborne pathogen compare to the spread of theperson-to-person pathogen you studied in activity A?A foodborne pathogen is much slower to spread than a person-to-person pathogen. The smallconfined room makes it easier and much faster to spread the virus. Foodborne only getsinfected by consuming contaminated food. On the other hand, a person-to-person pathogendoes not require that.5.Predict: How would you expect the spread of an airborne disease to be similar to anddifferent from the spread of a foodborne disease and a person-to-person disease?The similarity of a airborne disease and both a foodborne and person-to-person disease isnumerous. One of the similarities is that they are all diseases. Another similarity is that they canall infect and spread. These diseases not only have similarities but they also have differences.One of the many differences they have is the way they spread and infect. Airborne diseasesspread by a victim breathing in pathogens in the air. This is different from how foodborne andperson-to-person diseases spread because foodborne diseases spread by being consumed andperson-to-person diseases spread by contact of two people. In conclusion all the types ofdiseases including foodborne, person-to-person, and airborne all posses numerous similaritiesand as well as numerous differences.6.Experiment: Run a few simulations with the airborne pathogen.A.What patterns do you notice in how the airborne pathogen spreads?There are no patterns on how the airborne pathogen spreads. People get infected with thedisease in different parts of the room randomly.B.How does the spread of an airborne pathogen compare to the spread of foodborneand person-to-person pathogens?An airborne disease spreads randomly as the disease is in the air. It depends if the disease isinhaled. On the other hand, foodborne and person-to-person pathogens are predictable.Foodborne pathogens spread from contaminated food and person-to-person pathogens arespread from contact of infected people.7.Think about it: Suppose there is an infectious disease at a party. How could doctors tell if thedisease was foodborne, airborne, or transmitted person to person?Doctors could look for patterns to find out what type of transmission the pathogen inflicted. Forfoodborne, they could make a chart and find out who ate the food and who got the disease or,they could microscope the food to find pathogens. A way for finding person to person pathogenswould be to go to the bathroom at the party and examine the towel for diseases or find out if

If the two oligonucleotides are allowed to anneal and the DNA polymerase and all substrates (4 dNTPs, etc.) are added to the mix, what will the first nucleotide incorporated in the DNA be?
a. A
b. C
c. G
d. T
e. U
Answer:
d. T
Explanation:
For a given DNA sequence, the array is represented as:
5'ATCCTGGACACTGTACCATCGGTACCAATCACAGGTCCTTACAGT 3'
And the premier; 5' GGACCTGTGA 3' attaches to the complementary base on the DNA sequence.
i.e.
5'ATCCTGGACACTGTACCATCGGTACCAATCACAGGTCCTTACAGT 3'
*AGTGTCCAGG
Thus, the first nucleotide that will be incorporated into the DNA will be T
What change is most likely
responsible for the trout decline? *
Answer:
Rise in temperature.
Explanation:
Increase in temperature is responsible for the decline in the population of trout because trout needs low temperature for better growth and survival. Due to more consumption of fossil fuels in vehicles and industries, more carbondioxide gas is released which causes air pollution. This air pollution increases the temperature of the earth surface known as global warming due to which the cold areas become warm and as a result the trout population decreases.
Which environmental factor could lead to a decrease in genetic variation in a population of tuna?
an increase in food availability
an increase in pollution
a decrease in tuna fishing
a decrease in tuna predators
Answer:
The environmental factor that could lead to a decrease in genetic variation in a tuna population is an increase in pollution (second option).
Explanation:
There is a correlation between genetic variability and environmental pollution, the latter being a factor that impacts negatively on the variability of a specific population.
The concept of pollution stress not only implies a low rate of reproduction, but it is also a factor that prevents genetic exchange with other populations, which is a factor that makes the genetic variability decrease in a population.
For these reasons an increase in pollution implies a decrease in genetic variability in a tuna population.
Other options, such as an increase in food availability, a decrease in tuna fishing or a decrease in tuna predators, are environmental factors that contribute to increased genetic variability.Answer:
B
Explanation:
Took the Test
What causes uncontrolled cell division at the genetic level?
Answer:
mutations affecting proteins that normally regulate the cell cycle.
Explanation:
The function of the cell cycle is the duplication of DNA molecules in chromosomes and precisely separated by copying into two genetically identical daughter cells.
A tumor is an abnormal mass of tissue that results from the uncontrolled growth of cells.
Which of the following do sage grouse and California tiger salamanders have in common?
They both thrive on ranchlands used for grazing.
They both consume vegetation that cattle cannot eat.
They both play a critical role in balancing the ecosystem of ranchlands.
They both establish mutualistic relationships with grazing herd animals.
Answer:
The answer is "They both play a critical role in balancing the ecosystem of ranchlands"
Explanation:
The more prominent sage-grouse, otherwise called the sagehen, is the biggest grouse (a kind of bird) in North America. Its reach is sagebrush nation in the western US and southern Alberta and Saskatchewan, Canada. It was known as essentially the savvy grouse until the Gunnison sage-grouse was perceived as a different animal groups in 2000. The Mono Basin populace of sage grouse may likewise be unmistakable.
The more noteworthy sage-grouse is a lasting occupant in its favorable places however may move short distances to bring down heights during winter.
Answer:
They both thrive on ranchlands used for grazing.
Explanation:
TRUST ED2022
Explain the all-or-none law of action potentials and describe the effect of increased stimulus strength on action potential production. How do the refractory periods affect the frequency of action potential production
If the stimulus reaches the threshold an action potential will be generated. If the stimulus doesn't reach it no action potential will be generated. If the stimulus will be stronger the action potential will have the same amplitude. The refractory period makes it harder to generate an action potential so they decrease the frequency of action potential production.
about _?_ percent of the solar energy that reaches the outer atmosphere is absorbed at the earth’s surface
a - 20
b - 30
c - 50
d - 70
Answer:
50
Explanation:
Which statement best describes how organisms demonstrate the transformation of energy?
Light energy from the Sun is converted into mechanical energy in a rabbit, which is converted into thermal energy and dispersed into the atmosphere.
Light energy from the Sun is converted into chemical energy in a wildflower, which is converted into mechanical energy in a deer that eats the wildflower.
Light energy from the Sun is converted into mechanical energy in a deer, which produces waste that is absorbed by a wildflower to produce chemical energy.
Light energy from the Sun is converted into chemical energy in a mushroom, which is converted into thermal energy as the mushroom breaks down dead matter.
Answer:
C
Explanation:
I would Say that is your best answer
Answer:
A
Explanation:
What part of the cell is considered the control center in
Eukarayotes
Answer:
Nucleus
Explanation:
The nucleus is defined as a large membrane-enclosed structure that contains the cell's genetic material in the form of DNA in eukaryotes. It is the control center of the cell and dictates what all of the other organelles do.
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do cells divide and replace old cells at a very precise regulated rate?
Answer:
Yes, cells divide and replace old cells at a very precise regulated rate
Answer:
cells are replaced every seven to ten years so cell replacement happens in that time but some parts of the body are faster than others but head to toe rejuvenation takes about a decade or so
Explanation:
what are the secondary sexual characteristics discuss each one of them
Answer:
Differences in size between sexes are also considered secondary sexual characteristics. In humans, visible secondary sex characteristics include pubic hair, enlarged breasts and widened hips of females, and facial hair and Adam's apples on males.
Explanation:
6. Below is a strand of DNA. Give me the complementary DNA strand.
ATCGTTG GACTGACTITA
what's the answer?
Answer:
TAGCAAC CTGACTCAAT
Explanation:
a = t
g = c
I hope this helped and if it did I would appreciate it if you marked me Brainliest Thank you and have a nice day!
Answer:
TAGCAAC CTGACTGA(there is no I) AT
What would happen in a cell if the DNA was destroyed completely or changed in any way?
Answer:
If the DNA of a cell is destroyed completely the cell would die i.e. cease to exist. A change in the DNA (germ-line mutation) would change the structure and/or functions of proteins in the cell.
Explanation:
The central dogma theory indicates that DNA is replicated to produce daughter cells. These daughter cells are then transcribed into mRNA (micro RNA) which are in turn translated into structural and functional proteins.
If the DNA is totally destroyed, no mRNA is formed and by implication, such a cell has no proteins. Now proteins are practically the "godfather" molecules in any cell, they maintain the selectively permeable cell membrane's integrity, they form the structural component of most cellular organelles, they are essential for transport of essential/toxic substances in/out of the cell, etc.
Looking at these functions, cessation of protein production is equivalent to cessation of cell life (apoptosis if DNA destruction is not stimulated externally).
A mutation (change in DNA) changes which protein is produced. A practical indication of this is when a single point mutation in hemoglobin produces sickle cell anemia!!
Which of the following happens when a cell divides? *
Answer:
when a cell divides
many other cell is formed
for example if one cell divides two cells will be formed.
Although bipedalism is unusual, humans are not the only living bipeds. For example, some flightless birds are also bipedal. Identify a living nonprimate animal that is also a biped. Then, compare its bipedalism with our bipedalism. Try to consider how it moves and some of its possible adaptations (such as limb length). Use resources in your classroom, credible online sources, or books to help you if necessary.
Explanation:
In simple terms, the term bipedalism refers to a term used to classify organisms that are equipped and use two legs or limp to walk, stand, jump or run.
One other nonprimate animal that is also a biped is the ostrich. When we compare the bipedalism of an ostrich with our (humans) bipedalism we discover that in terms of
Speed; an ostrich can move faster than an average human, reaching speeds of up to 70 km/h (43 mph).
limb length; its limb length can range from 10 to 16 feet (120 inches to 192 inches) which is far greater than the average length of an adult human's legs.
ill give brainliest just please answer. which map would you use if you wanted to determine the region of the united states that produces the most natural gas?
Answer:
In 2013, the country produced 30.0 trillion cubic feet (TCF) of marketed gas. With 7,545 billion cubic feet (BCF), the leading gas-producing area in the United States in 2013 was Texas, followed by Pennsylvania (3,259 BCF), and Louisiana (2,407 BCF).
Match the characteristics below to either monocots or dicots.
________netted veins in leaves
________herbaceous or woody stem
________corn, asparagus, and grasses
________parallel veins in leaves
________only herbaceous
________beans, peaches, and potatoes
SEE ANSWERS BELOW>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
In this lab, we discussed several explanations for the evolution of bipedalism. Each hypothesis has its drawbacks and has been criticized. It’s your turn to hypothesize why our lineage evolved bipedalism. Describe some of the advantages of bipedalism (be sure to think about what life would have been like for our ancestors millions of years ago when bipedalism evolved, including their risk of predation, food availability, environment, etc.). Are there any disadvantages to bipedalism? If so, what are they? Taking into account these possible advantages and disadvantages, why do you think bipedalism might have evolved?
Answer and Explanation:
One of the main disadvantages of bipedalism is that it makes it impossible for mothers to carry their young efficiently. This is because bipedalism stimulates the spine's reaction, which may cause the puppies to slip and stay behind, or to be caught by predators. Thus, bipedalism impairs the maintenance of the species, as it leaves the puppies vulnerable.
Bipedalism also causes a decrease in the speed of the body that must be fighting gravity at all times. This can hinder the hunting and flight of predators, which, again, impairs the survival of the species.
In the Hershey/Chase experiment phage proteins and DNA were radioactively labeled and allowed to inject coding material into bacteria. It was found that only radioactively labeled DNA was present in the bacterial cells which had been transformed. If radioactively labeled protein had been discovered in the transformed cells, what would this have told us about the molecules acting in genetics
A virus is made of two main components. A proteic capsid and genetic material. The Hershey/Chase experiment demonstrated that the virus introduces it's genetic material(DNA) inside the host cell to force it to make more viruses. This proved that genetic information is stored in DNA. If the marked proteins were found in the host cell that would have meant that proteins carry genetic information which they don't.
What does the picture present?
Chromosome
Nucleas
Gene
Answer:
Chromosome
Explanation:
important tasks a cell must complete to divide
Answer:
Cells must divide to perform functions such as growth of the organism, replacement of damaged or old cells, and asexual reproduction in some organisms.
Explanation:
Answer:
To divide, a cell must complete several important tasks: it must grow, copy its genetic material (DNA), and physically split into two daughter cells.
Explanation:
Cells perform these tasks in an organized, predictable series of steps that make up the cell cycle.
Which property could be used to identify a substance?
A. mass
B. weight
C. density
D. volume
Where are the cells that make up the sinoatrial node, or pacemaker, located?
Answer:
Right atrium of the heart
Explanation:
If you want to be absolutely certain that you will find the solution to the problem you know is solvable, you should use
O algorithm
O heuristic
O trial and error
O insight
what are three possible reasons the iguanas are disappearing in the Galapapagos islands
Answer:
Explanation:
Their habitats are possibly being destroyed, iguanas are possibly being a food item to people, or their reproduction rates/eggs not hatching.
Which of the following professionals is best suited to help balance the operations of CAFOs and animal welfare concerns?
a veterinarian
an animal scientist
a small-scale farmer
an animal welfare educator
Answer:
A veterinarian.
Explanation:
Hope this helped!
Answer:
A Veterinarian
Explanation:
this seems like the answer to me.
Energy conversion in which sunlight, water and carbon dioxide is converted into oxygen
and glucose.
Answer:
Photosynthesis
Explanation:
Cell walls in plants provide_______
1) Water storage
2) Control of cell function
3) Structural support
Answer:
3.
Explanation:
Plant cell walls primarily provide mechanical support for cells and collectively form the skeleton of the plant.
Answer:
the answer is choice 3
Explanation:
hoped I helped
Which two things are found on a molecule of tRNA
Answer: Ribose nucleotides and the nitrogenous bases
Explanation: RNA consists of ribose nucleotides (nitrogenous bases appended to a ribose sugar) attached by phosphodiester bonds, forming strands of varying lengths. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA.
Answer:RNs and nitrogenous bases
Explanation:
Ribose nucleotides and the nitrogenous bases
PLEASE HELP
James fills a graduated cylinder with 50 mL of water. He then drops a 00g key into the graduated cylinder. The water level inside the graduated cylinder rose to 53 mL as shown below.
50 mL
53 mL
If Density - Mass / Volume, what is the density of the key?A : 60 gmL
B: 20 gimL
C: 2.05 g/mL
D: 0.05 g/mL
Answer:
20 g/mL
Explanation:
the answer is B :)
