it can show us our history and may help us discover relatives we never new we had or lot contact with.
HURRY LAST QUESTION TEST DUE IN 5 MINUTES !!!!!!
Where are you most likely to find ocean water with high density? A. Near the polar regions B. Near the equator in the Pacific Ocean D. Mid latitudes in the pacific ocean
Answer:
I would say the answer is A. I'm not 100% percent but that's what I would put.
Near the polar regions :)
Bacteriophage .They used the radioactive isotope sulfur-35 to label the of the virus and phosphorus-32 to label the of the virus. They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was . This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA .
Answer:
Bacteriophage
Explanation:
Bacteriophage is nothing but a virus that harms and kills the bacteria.
The Hershey-Chase Experiments is a well known experiment done by scientist, Alfred Hershey and Martha Chase. They conducted the experiment in the year 1952.
It was an extra ordinary experiment which made the world believe that the DNA is the genetic material and not a protein. In their experiment, they tried to find out if the protein coat or the core of the DNA of the virus which enters into the infected cells would help them to understand whether the genes were made of DNA or of protein.
They used sulfur-35 and phosphorus-32 radioactive isotopes to trace the DNA and the proteins.
Answer:
Explanation:
Hershey and Chase started with a virus called a bacteriophage.
They used the radioactive isotope sulfur-35 to label the protein
of the virus and phosphorus-32 to label the DNA of the virus.
They allowed the tagged virus to infect bacteria and studied the results. Hershey and Chase found that the only radioactive isotope within the bacteria was 32P.
This result indicated that the genetic material inserted by the virus to infect the bacteria was DNA.
Meiosis I is often referred to as reduction division because it results in the reduction of the chromosome number from diploid to haploid. The chromosomes that remain in each cell are made of sister chromatids. During meiosis II, what will happen to the sister chromatids?
Answer: they will separate into different cells.
Explanation:
They separate into 4 cells.
Sister chromatids separate during meiosis II, resulting in haploid cells with non-duplicated chromosomes.
What is sister chromatid?A sister chromatid is two identical copies of a chromosome formed by DNA replication, with both copies joined together by a common centromere.
To put it another way, a sister chromatid is 'one-half' of a duplicated chromosome. A dyad is a pair of sister chromatids.
Meiosis II is analogous to mitosis. There is, however, no "S" phase. Because of recombination, the chromatids of each chromosome are no longer identical.
Meiosis II separates the chromatids, resulting in two daughter cells with 23 chromosomes (haploid), each with only one chromatid.
Thus, during meiosis II, there will be the separation of the sister chromatids.
For more details regarding meiosis, visit:
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How many ATP's are generated from one glucose molecule that has
completed cellular respiration?
Is it 36 or 38
Where within the cell does cellular respiration take place?
Answer:
Mitochondrian
Explanation:
The enzymatic reactions of cellular respiration begin in the cytoplasm, but most of the reactions occur in the mitochondria. Cellular respiration occurs in the double-membrane organelle called the mitochondrion.
Elements or compounds that can only be separated or combined to make substances with new properties by means of a chemical reaction.
Answer:
substance
Explanation:
hello hope this helps
Which wave has high enough energy to cause damage to skin and sometimes cancer?
a) visible light
b) ultraviolet rays
c) infrared rays
d) microwaves
Which of the following is an example of specific immunity?
Answer:
Immunity to Small Pox
Explanation:
Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.
Classify the statements based on whether they describe earthquakes or volcanoes.
Answer:
Here's the real answer!!
Explanation:
Identify types of toxic waste generated in a dental office
Answer:
disposable needles, scalpel blades, contaminated broken glass, dental burs, endodontic files and reamers.
Explanation:
Which of the following processes usually takes the longest amount of time?
A. Hot lava cools and forms new rock.
B. Water vapor condenses to form a cloud.
C. A seismic wave travels through the mantle.
D. An ocean basin forms between two continents.
Answer: these single-celled organisms, one cell must carry out all of the basic functions ... of glaciation, supports theories that the earth has evolved over geologic time. ... torn down by natural processes, including deposition of sediments, rock formation, ... a boiling point, both of which are independent of the amount of the sample.
Explanation:
1) A region of the country is rapidly growing in population, causing the demand for electricity to go up each year. As a result, a new source of electricity is needed. This particular region of the country has plenty of agriculture, rivers, and access to coal deposits underground. Which of the following would be the cheapest way for this region of the country to make electricity, have minimal impact on the environment, yet not add carbon dioxide to the atmosphere?
Group of answer choices
A)Use the agriculture biomass to generate a renewable fuel that can be burned to generate electricity
B)Use the coal deposits to generate electricity in a few coal fired facilities
C)Build a nuclear power plant in the middle of the region
D)Build dams along the rivers to generate electricity
2)The image provided shows a partial river food web.
The local town relies on this river ecosystem to sustain their population both economically and as a source of food. Using the food web provided, which statement provides the best reasoning for regulating the amount of fish removed from the river by humans.
Group of answer choices
A)Regulation will help the ecosystem to remain balanced and contribute to the stabilization of other populations of river organisms.
B)Regulation will increase the amount of energy transferred from the catfish to the eagle.
C)Regulation will allow contaminated sediments to decrease in the river due the removal of the contamination source.
D)Regulation will ensure that carp will not overpopulate the ecosystem and begin to consume larger organisms like the salmon.
Answer:
1- D
2- A
Explanation:
1- Water and electricity is the best option to decrease carbon footprint.
2- not sure
Which limiting factor is density independent? a. food supply b. drought c. disease d. competition
Answer:
im pretty sure its d. competition
Explanation:
how are mitochondria similar to chloroplasts?
Answer:
Mitochondria within animal cells and chloroplasts within plant cells look like prokaryotes. Mitochondria and chloroplasts are similar in size and features to prokaryotes. ... Both mitochondria and chloroplasts have their own circular DNA and can function independently of the eukaryotic host cell.
Explanation:
hope this help
pick me as the brainliest
If a dented pea plant is crossed with a heterozygous smooth plant, what will be the phenotypes of the offspring?
I attached the answer in a photo
what are the two supporting evidence of seafloor spreading theory?
Answer: Several types of evidence supported Hess's theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. This evidence led scientists to look again at Wegener's hypothesis of continental drift.
Explanation:
Why are whales classified as mammals
Answer:
They give birth to young, have fur, have lungs, and provide milk for the young.Explanation:
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According to the UCSB Science Line, Whales are mammals because they give birth to young, have fur, ( even though it may not be visible ) have lungs and breathe, and provide milk for the young.
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I got these facts from the UCSB Science Line, you can check it out if you want.
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Hope this helps! <3
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Select all the correct answers.
Which two statements are true about the effects of life on Earth's early oceans?
Early life increased the temperature of Earth's oceans.
Early life reduced the amount of dissolved carbon dioxide in the hydrosphere.
Early life increased the concentration of salt in Earth's oceans.
Early life helped make the oceans livable for oxygen-dependent species.
Answer:
Early life reduced the amount of dissolved carbon dioxide in the hydrosphere and Early life helped make the oceans livable for oxygen-dependent species.
1. Early life reduced the amount of dissolved carbon dioxide in the hydrosphere.
2. Early life helped make the oceans livable for oxygen-dependent species.
Information that a system uses to monitor progress and make adjustments is called the _____.
output
feedback
process
input
Answer:
process
hope it helps
thanks for the points
define hydrogen bonds
The graph shows the relationship of photosynthesis with temperature.
At what temperature is the rate of photosynthesis the highest?
1- 10°C
2- 15°C
3- 25°C
4- 35°C
cell structure matching ( help don't know)
Answer:
so the a goes down and up and then it finds two pretty bestfriends
What cellular process does a mitochondrion perform for the cell?
Answer:
Cellular Respiration.
Explanation:
Which of the choices below provide direct evidence of evolution
A. Fossil
B. Plate tectonics
C. DNA
D. Both A and C
The shape of each of the molecules is important because A) if the shape of any molecule in an organism changes, the DNA in that organism will also change B) the shape of a molecule determines the age of an organism C) the shape of a molecule determines how it functions in chemical reactions D) molecules having different shapes are always found in different organisms
Answer:
The correct answer would be - C) the shape of a molecule determines how it functions in chemical reactions
Explanation:
The molecular shape of the molecules is one of the important characters of the molecules. It is important due to the fact that molecular shape determines how a molecule will react and interact with other molecules.
The shape of the molecules determines boiling point, melting point as well as various chemical reaction by determining the bonds. For instance, H2O or water has a tetrahedral shape which affects its bonding and properties. If molecules were linear in shape there would be no life existed.
Thus, the correct answer would be - C)
It is a test please help
Which organ is not connected to its system?
a) Spinal cord – Nervous system
b) Large intestine – Digestive System
c) Testes – Reproductive system
d) Kidney – Circulatory system
Answer:
Kidney is not connected to its system
Explanation:
the kidney belongs to the renal system
3 QUESTIONS PLS HELP MIDDLE SCHOOL/HIGHSCHOOL SCIENCE
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1. Which of these is a piece of evidence supporting the theory of evolution?
A) Ostriches resemble armadillos.
B) Armadillos resemble emus.
C) Glyptodons resemble armadillos.
D) Finches resemble glyptodons.
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2. Which physical evidence supports the evolution of Earth due to chemical weathering?
A) Hammer shape of Bryce Canyon rocks
B) Red color of Bryce Canyon rocks
C) Streaks on the face of Wave Rock
D) Concave shape of Wave Rock
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3. A scientist is designing an investigation to study the impact of fungal disease on the population of mountain yellow-legged frog in a recreational nature park. What is most likely the outcome variable (dependent variable) for the study?
A) Frog population
B) Fish population
C) Disease-controlled habitat
D) Native habitat in natural setting
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Answer:
d,c,a
Explanation:
Based on the weathering patterns, guess the rock type shown in each photo.
Answer:
Granite and sandstone
What kind of material is transported through osmosis?
Answer: water
Explanation: Osmosis is the diffusion of water through a semipermeable membrane according to the concentration gradient of water across the membrane. Whereas diffusion transports material across membranes and within cells, osmosis transports only water across a membrane and the membrane limits the diffusion of solutes in the water.
How does ATP structure relate to its function?
Answer:
The structure of ATP is a nucleoside triphosphate, consisting of a nitrogenous base (adenine), a ribose sugar, and three serially bonded phosphate groups. ATP is commonly referred to as the "energy currency" of the cell, as it provides readily releasable energy in the bond between the second and third phosphate groups.