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 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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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:
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.
why is the small intestine important
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).
Help Plz! Will give brainliest and for a lot of POINTS!
Which type of feature forms suddenly where intense compression deforms the rock in an area
a. volcano
b. normal fault
c. folded layers
d. reverse fault
Answer:
option b normal fault
Explanation:
sorry if i' m wrong
Answer:
Its reverse fault
Explanation:
LOTS OF POINTS!?!?!The amount of CO2 coming out of volcanoes is less than Type Here% of what goes into the atmosphere from burning fossil fuels.
FILL IN THE TYPE HERE PART!?!?!?!
Which of the following represents a scenario of potassium cyanide toxicity?
-The substrate-level phosphorylation of glucose generates all the ATP required by the cell.
-Chemiosmosis still occurs in the inner mitochondrial membrane and generates all the ATP during cellular respiration.
-Oxidative phosphorylation that generates most of the ATP is blocked, and oxygen cannot accept the electrons from NADH.
-Electrons cannot be transferred from NAD to NADH, and ATP generation from both the substrate level and oxidative phosphorylation is blocked.
Answer:
Oxidative phosphorylation that generates most of the ATP is blocked, and oxygen cannot accept the electrons from NADH.
Explanation: Sorry this is late and may be wrong but it is my best guess and here is why:
Potassium cyanide blocks the ETC where the majority of ATP is produced. The ETC is a oxidative phosphorylation process where oxygen is needed as the final electron acceptor of NADH.
The first answer can be eleminated because oxidative phosphorylation produces the most ATP.
The second answer can be eleminated because chemiosmosis does not generate ALL the ATP during cellular respiration, but does produce most of it. Still they worded it as an "all or nothing" type of question so I don't think it is correct.
The fourth answer may not be correct because NAD does not pass on an electron to NADH. Instead, NADH donstes electrons to the ETC and is then turned into NAD. So the process listed is technically backwords.
Sorry I can't be sure about the answer but this is how I broke it down.
Answer: Should be C
Just took the test on edge <3 you all!!
which of the following is not water soluble?
A.salt
B.sugar
C.fat
D.carbohydrates
Answer:
Fat
Explanation:
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
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 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!!
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:
Which of the following best explains the most likely method by which this antitumor drug works
Energy conversion in which sunlight, water and carbon dioxide is converted into oxygen
and glucose.
Answer:
Photosynthesis
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
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
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.
Plants make their own food though a process called
Answer:
photosynthesis
Explanation:
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.
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 :)
By definition, what is a prokaryote?
A. Bacterial cell having no digestive system
B. Bacterial cell having no excretory system
C. Bacterial cell containing no cell membrane
D. Bacterial cell containing no true nucleus
Answer:
i m trying to post my own language.please compromise
Explanation:
microscopic single-celled organism which has neither a distinct nucleus with a membrane nor other specialized organelles, including the bacteria and cyanobacteria.
Is the steel mesh being draped across the hillside intended to prevent weathering or erosion?
lol help plz
It's difficult to say for certain without more context, but it's possible that the steel mesh is intended to prevent erosion.
When does erosion occur ?Erosion occurs when soil or rock is washed away by water or wind, and it can be a significant problem in areas with steep slopes or loose soil. Steel mesh can be used to stabilize slopes and prevent erosion by holding soil in place and providing a barrier to prevent the movement of soil particles.
Weathering, on the other hand, refers to the natural process of breaking down rock and other materials over time due to exposure to the elements. While steel mesh can provide some protection against weathering by shielding the surface of the slope from direct contact with wind and rain, it is not typically used specifically for this purpose.
If you could provide more context about the steel mesh installation, it would be helpful in determining its intended purpose. For example, where is the hillside located? What type of terrain is it? What is the surrounding environment like? Is there any construction or development happening in the area? What is the current state of the hillside? Is it prone to erosion or landslides?
Answering these questions could help shed more light on why the steel mesh is being used. Additionally, it's possible that the steel mesh is being used for multiple purposes, such as both erosion control and slope stabilization.
Again, without more information about the specific context of the steel mesh installation, it's difficult to say for sure what its intended purpose is.
Learn more about erosion at :
https://brainly.com/question/30587260
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The fluid-mosaic model of the cell membrane suggests that the membrane is primarily composed of
Answer:Fluid mosaic model of a cell membrane The fluid mosaic model explains various observations regarding the structure of functional cell membranes. According to this biological model, there is a lipid bilayer (two molecules thick layer consisting primarily of amphipathic phospholipids) in which protein molecules are embedded.
Explanation:
4. The number of protons in an atom’s nucleus is called the ________________ ________________.
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
groups of specilized cells working together are called
Answer:organs
Explanation:
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.
Where are the cells that make up the sinoatrial node, or pacemaker, located?
Answer:
Right atrium of the heart
Explanation:
