Answer:
Wedging (for the first one)
Explanation:
Why is DNA in the world?
Answer: Nine years ago I jumped at an opportunity to join the international team that was identifying the sequence of DNA bases, or “letters,” in the genome of the common chimpanzee (Pan troglodytes). As a biostatistician with a long-standing interest in human origins, I was eager to line up the human DNA sequence next to that of our closest living relative and take stock. A humbling truth emerged: our DNA blueprints are nearly 99 percent identical to theirs. That is, of the three billion letters that make up the human genome, only 15 million of them—less than 1 percent—have changed in the six million years or so since the human and chimp lineages diverged.
Evolutionary theory holds that the vast majority of these changes had little or no effect on our biology. But somewhere among those roughly 15 million bases lay the differences that made us human. I was determined to find them. Since then, I and others have made tantalizing progress in identifying a number of DNA sequences that set us apart from chimps.
An Early Surprise
The geologic species scale has units based on changes in rocks and fossils.
True
False
The geological time scale/species scale is divided into different units of time depending on changes in the rocks and fossils. So the statement is true.
What is the geological time scale?
The lengthy period of time that the Earth's geologic history has taken up is known as geologic time. Starting at the beginning of the Archean Eon (4.0 to 2.5 billion years ago), formal geologic time runs to the present.
The Hadean Eon, an informal time period that runs from around 4.6 billion years ago (corresponding to Earth's first creation) to 4.0 billion years ago, is also frequently included in modern geologic time scales. The period of Earth's history that is reflected by and preserved in the planet's rock layers is known as geologic time.
Events throughout Earth's history are "calendared" according to the geologic time scale. It divides all of the time into named units of abstract time known as eons, eras, periods, epochs, and ages, in declining order of duration. Those geologic time units are counted according to stratigraphy, the correlation, and the categorization of rock layers.
Therefore, the geological time scale is used for dividing different units of time according to changes in rocks and fossils. Hence the statement is true.
Read more about geological scale, here
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NEEDDDDDD HELPPPPP!!!
1. Nucleolus
2. Ribosomes
3. Insulin
4. Mitosis
5. Chromatin
6. DNA
7. Endoplasmic Reticulum
8. Delivery system
9. Cytoplasm
10. Mitochondria
11. Semipermeable
12. Export
13. Golgi body
14. Lysosomes
15. ATP
16. Osmosis
17. Diffusion
18. Vesicles
19. Breaking down
20. Energy
How can a shortage of nutrients harm organisms in an ecosystem? How can an excess of nutrients harm organisms in an ecosystem? Give an example of each scenario to support your answers.
Answer:
Explanation:
Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.
For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.
Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.
For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .
Genes determine all traits?True or false
Answer: True
Explanation: Genes are traits your ancestors and parents have or had, so they pass on to you. Some genes mix which makes you have green eyes instead of brown like your grandma.
Hope this helps <3
Answer:
false
Explanation:
traits are determined by more than two genes.
Predict the two possible outcomes if temperature or pH were changed within the molecular control system of cell division.
I'm pretty sure it's that the cells would divide more or divide less, right? Because the temp or pH change would cause some enzymes to denature, and then, depending on which ones denature, the regulation of cell division would be messed up and they would either divide too much or not enough?
Answer:
Yes, pH and temperature affects the cell division.
Explanation:
If the temperature falls between the range of 3 °C to 25 °C, the mitosis process increases but when the temperature lowers from 3 °C and exceeds from 25 °C so it decreases the rate of mitosis process because the enzymes which is responsible for the process of mitosis denatures and does not work properly. same is the case with pH, the rate of the process will increase when the pH is neutral but decreases when the pH goes lower or higher.
Which pie graph below matches the data in the bar graph above?
Answer:
Pie Graph Z
Explanation:
According to the bar graph:
If 40% is Bulldog then the 25% would be Poodle which is a total of 65% leaving two equal bars (so 100%-65%=35%). That is 17.5% for Beagle and 17.5% for Collie.
Hope this helps!
Answer:
Chart Z
Explanation:
I took the same test today and got it correct.
I hope this helps!
(P.s Have a wonderful day!)
hurry plz due in five min
Answer:
Its B the 2nd option
Explanation:
.......
The law of___________explains how traits are inherited through generations.
ANSWER CHOICES: Alleles,dominance,Generations,and codominance
Answer:
alleles
Explanation:
alleles have genetic info in them
If a strand of DNA has 10% G, what percent will be T?
100 Points and Braniliest! Pls help asap. I will name u brainliest! Pls help asap. I will name u brainliest! Pls help asap. I will name u brainliest! Pls help asap. I will name u brainliest! Pls help asap. I will name u brainliest! Pls help asap. I will name u brainiest! Pls help asap. I will name u brainliest!Pls help asap. I will name u brainliest! Pls help asap. I will name u brainliest!
Can u spot the difference in the sentences above?
Actual questions:
Answer:
they are too tiny, can't read them
Answer:
you need to make it bigger pls make another one
Explanation:
PLZ HELP IM TIMED
How does the graphic in the section "One Atmosphere, Many Layers" develop a coherent understanding of Earth's atmosphere?
A
It illustrates where each layer of the atmosphere is located.
B
It outlines what each layer of the atmosphere is made up of.
C
It helps the reader to see that weather happens in different layers of the atmosphere.
D
It helps the reader to understand which layers of the atmosphere are most important.
Answer:
D
Explanation:
When fungi and bacteria decompose organic matter, they return ____ to the environment.
Answer:
Carbon and nitrogen.
probably
Hope that helped :)
Fungi and bacteria decompose organic matter, contributing to the formation of soil organic matter since they return nitrogen and carbon to the environment.
How is the decomposition of organic matter?Fungi and bacteria break down residues and organic matter, excess nutrients (nitrogen, phosphorus and carbon) are released into the soil in forms that can be used by plants (nutrient availability).The nitrogen released by these microorganisms is in the form of ammonium (NH4+) and thus readily available to the roots of plants and other organisms.By decomposing residues and storing carbon within their own biomass, soil biota play a very important role in nutrient recycling processes.Therefore, we can conclude that the most important function of fungi and bacteria microorganisms is the breakdown of organic materials.
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John and Sarah had a child born with cystic fibrosis, a genetic disease. Both John and Sarah were normal, showing no signs of this disorder. How is it possible for them to have a child with this disease?
a. Cystic fibrosis must be a dominant trait disorder hidden in both parents' genotype, but not showing in the phenotype, that could be passed on to offspring.
b.Cystic fibrosis must be a recessive trait disorder hidden in both parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.
c. Cystic fibrosis must be a dominant trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.
d.Cystic fibrosis must be a recessive trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring
Answer:
B
My logic:
I did a whole project on genetics and i love genetics. I know for a fact this is the correct answer because i had it 2 years ago on a test and got it correct. On the off chance im wrong, it has been 2 years and i might have mixed my facts up.
Hope this helps!
Answer:
it is b
Explanation:
reccesive doesn show in the phenotype because its covered by the dominant trait so the parents were fine but it is both parents so that the kid has an rr and not Rr or RR so that the reccesive trait would be covered by the dominant in the phenotype so B
30 POINTS!! Type one to two paragraphs describing the full water cycle. Be sure to use full sentences and proper grammar.
Answer:
The water cycle is the way that all water chases after as it moves Earth in various states. Fluid water is found in seas, streams, lakes—and even underground. Strong ice is found in icy masses, day off, at the North and South Poles. Water fume—a gas—is found in Earth's air.
The water cycle, otherwise called the hydrologic cycle or the hydrological cycle, depicts the constant development of water on, above and underneath the outside of the Earth. There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let's look at each of these stages. Evaporation: This is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas).
Explanation:
How has the environment of this location changed since Basilosaurus lived?
I have a Lab work who will do it for me I'll give 100 points
promise
Answer:
Okay, what is it?
Explanation:
Can someone please answer my last question its in biology and 7th grade
its easy plz help, its due today!!
Answer:
yes please
Explanation:
what's the question
Cells carry out respiration continuously because all living things need a constant supply of _________________________________.
A Food
B Water
C Energy
D Oxygen
When an antigen attacks the body, it activates adaptive immunity. This adaptive immunity produces a strong response when it encounters the same antigen for the second time. Which feature of adaptive immunity is essential for this kind of response?
Answer:
A) the ability to remember the antigen it encounters
Adaptative immunity reacts in a more general way producing nonspecific antibodies against the foreign antigen when the organism is first attacked by that foreign antigen. The second time around, when the organism is faced again with the same foreign antigen, it produces a much stronger response because it memorised the antigen and is not strange anymore so the response can be more specific, quicker, and effective.
Explanation:
Answer:
Explanation:
memory T cells plays an important role in fighting against microbe which encounter the body for second time
7. In a cross with a homo zygous, grey, female moth and a homo zygous, black, male moth, all of the progeny are grey. In a cross with a homo zygous, black, female moth and a homo zygous, grey, male moth, all of the progeny are black. What is the best explanation for this? (2 words)
Answer:
Due to dominant trait.
Explanation:
The best explanation for this result is that grey colour is dominant trait due to which all of the progeny appears grey while in the second example, black colour is dominant trait which appears in the all the offspring of moth. In the offspring, only that trait becomes visible which is dominant while the trait which does not appear is known as recessive trait so that's the reason due to which grey in the first and black colour in the second becomes visible.
2) Fill in the blanks with the following options.
What was the environment of early earth like? Complete the statement below to answer the question.
a)wind
b)elements
c)gases
d)inorganic
e)organic
f)lightning
g)primordial
______seas absorbed______of the atmosphere, there was a heavy concentration of ultraviolet radiation from the sun, and frequent______strikes, and the environment was helpful in producing______molecules from______molecules.
Answer:
1.primordeal 2.gases 3. lightning 4.organic 5.inorganic
PRIMORDEAL seas absorbed GASES of the atmosphere,There was a heavy concentration of ultraviolet radiation from the sun, and frequent LIGHTNING strikes, and the environment was helpful in producing ORGANIC molecules from INORGANIC molecules.
Gases are absorbed by the primordial seas and lightning strikes in earth helpful in producing inorganic molecules from organic molecules mostly present in living things.
What is primordial sea?Oceans of earth in the earlier time is called as primordial seas in the history . Primordial seas creates heavy rain last for long time.
Lightening in earth is caused by electrostatic charge from the ions in the atmosphere. Lightening is followed by thunder. Lightning helps to produce oxides and nitrogen in the atmosphere.
The passage which describes the weather in the earth can be completed as follows:
Primordial seas absorbed gases of the atmosphere, there was a heavy concentration of ultraviolet radiation from the sun, and frequent lightning strikes, and the environment was helpful in producing inorganic molecules from organic molecules.
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which of the following is identical in a skin cell and a muscle cell from the same individual?
a. cellular shape
b. amount of ATP
c. genetic material
d. cell function
Answer:
C
Explanation:
skin and muscle cells are similar in that they contain the same DNA
What is typical of cell reproduction when cancer cells are reproduced in a petri dish from a tissue culture? Check all that apply.
Answer:
Cells reproduce without limit. Cells reproduce with multiple cells
please help me, i dont like this
Answer:
the answer is true because plant can be infected
by parasitic
sorry if wrong
Answer:
This is true.
Explanation:
Some plants are parasitic, which means they do not make their own food. They do, however, steal necessary water and minerals from other plants, often killing the other plants off. Parasitic plants sometimes do have chlorophyll, and others do not.
Electrons fill energy levels starting with the levels __________________
(close to or away from) the nucleus.
Electrons fill energy levels starting with the levels that are close to the nucleus. The levels are called orbitals and each orbital must be filled before the next orbital can be filled also the 1st orbital can only hold 2 electrons.
The giant african land snail is an invasive species that is also the largest snail ons earth what is most likely consequence of introducing this invasive species into a stable ecosystem?
A. The native snail species will change their diet therefore destabilizing the ecosystem.
B. The native snail species will move to another area allowing the ecosystem to remain stable.
C. The native snail species will share their food with the invasive species stabilizing the ecosystem.
D. The native snail species will compete for resources with the invasive species and destabilize the ecosystem
Answer:
D. The native snail species will compete for resources with the invasive species and destabilize the ecosystem
Explanation:
In Ecology, an invasive species refers to a species of organism that is foreign i.e. non-native to a particular habitat or environment. They are characterized by the ability to proliferate in growth and compete for space and nutrients with the native species in the habitat they are introduced to.
In this case, the giant african land snail, which is an invasive species, if introduced into a stable ecosystem will compete for resources with the native species of that ecosystem leading to the destabilization of the ecosystem.
"What would railroads do if every state had different requirements for smokestacks or track width?"
Answer:
The train will move on the roads.
Explanation:
If every state had different requirements for smokestacks or track width, the trains should be run on the roads because if there is different requirement for track width, it is impossible to run same type of train on these tracks. One another act will be done and that was to make different types of trains for each state so that they can move on the tracks. But it is impossible for having different track width, it must be of same width.
John is completing an internship in biology at the Clearwater Marine Aquarium. While interning there, he monitors an outdoor phytoplankton exhibit to observe how populations of phytoplankton change when exposed to light. It is observed that each year the phytoplankton population within the exhibit increases when it was exposed to high amounts of sunlight. A new apartment complex that overlooks the aquarium is being built. The phytoplankton that were receiving 8-12 hours of sunlight each day will now have between 2-5 hours of sunlight. How will the phytoplankton be affected by the new apartment building?
Answer:A
Explanation:
It will decrease over time
When will a seed begin to germinate?
A. When it has sunlight and water
B. When it has energy
C. When it has water
D. When it has sunlight
Answer:
A
Explanation:
When it has sunlight and water
Answer:
A. When it has sunlight and water
Explanation: