Answer:
D
Explanation:
I'm sorry for that other answers I hate when people do that good luck! :)
prokaryotic cells have a single circular chromosome and a defined nucleus? true or false?
Answer:
False, it lacks a defined nucleus.
Explanation: By definition, prokaryotes lack a membrane-bound nucleus to hold their chromosomes. Prokaryotes generally have a single circular chromosome that occupies a region of the cytoplasm called a nucleoid. They also may contain small rings of double-stranded extra-chromosomal DNA called plasmids.
Answer:
False
Explanation:
Prokaryotic cells don't have a nucleus, they have a nucleoid region
PLEASE HELPP
diversity in a habitat represents
A. a group of the same species
B. a group of different species
C. a unicellular organism
Answer:
B. a group of different species
Explanation:
Diversity means to have variety. (In this case, a variety of species)
How many different keys can be used in a single sort?
Answer:
The answer is 3.
Explanation:
Hope this helped Mark BRAINLEST!!!
In the term isotonic, the prefix iso- means
A. Above
B. Equal
C. Below
D. Pressure
Answer:
Iso stands for equal......
What types of pollutants can interfere
with the health of Wetland Ecosystems?
A) All of the above are threats to Wetlands.
B) Petroleum products such as motor oil.
C) Pesticides.
D) Nitrogen & Phosphorus fertilizer.
A mutation is least likely to affect a cell when the mutation --
A mutation is least likely to affect a cell when the mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
What is the function of cells and mutation?As genetic materials, nucleic acids encode information about the cell's structure and function, its proteins, receptors, and so on. The mRNA that is formed from the gene has roles in the formation of the receptor, the enzymes, etc., so if any mutation happens to the gene that is in the coding region, then it can show its impact, but if the mutation is of the silent type, then it has no impact on the cell.
Hence, when a mutation is silent in nature or is not associated with an exon, it is least likely to affect a cell. Any mutation that happens to the introns does not affect the cell's function.
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PLEASE HELP!!!!!! 100 POINTS!! Lab: Absorption and Radiation by Land and Water
Now that the lab is complete, it is time to write your lab report. The purpose of this guide is to help you write a clear and concise report that summarizes the lab you have just completed.
The lab report is composed of three sections:
Section I: Experimental Overview
o Provide background information.
o Include the hypothesis.
o Summarize the procedure.
Section II: Data and Analysis
o Include graphs to display trends in the data.
o Identify trends in the data.
Section III: Conclusions
o Identify if the hypothesis was supported or refuted.
o Provide logical reasoning based on data.
o Explain how the experiment could be improved.
To help you write your lab report, you will first answer the eight questions listed below based on the experiment that you have just completed. Then you will use the answers to these questions to write the lab report that you will turn in to your teacher.
You can upload your completed report with the upload tool in formats such as OpenOffice.org, Microsoft Word, or PDF. Alternatively, your teacher may ask you to turn in a paper copy of your report or use a web-based writing tool.
Questions
Section I: Experimental Overview
1. What is the purpose of the lab?
2. What is your hypothesis for this experiment?
3. What methods are you using to test this hypothesis?
Outline the steps of the procedure in full sentences.
Section II: Data and Analysis
4. What graphs would clearly represent the trends in your data?
Your Student Guide includes information on which graphs to construct. Each graph should have the following items:
a. An appropriate title
b. Appropriate labels for each axis
c. An appropriate scale for each axis
d. The correct units for the data
Complete a rough sketch of each graph.
5. What do the data in your graphs tell you?
Explain in one or two sentences what trend is shown in each of your graphs.
Section III: Conclusions
6. What do the data tell you about your hypothesis?
State how your hypothesis is either supported OR refuted by the data.
7. How do the data support your claim above?
Explain your statement above. Be sure to refer to specific pieces of data from your experiment that support your argument.
8. If you could repeat the experiment and make it better, what would you do differently and why?
There are always ways that experiments can be improved. Now that you are a veteran of this experiment and have experience with the procedure, offer some advice to the next scientist about what you suggest and why.
Answer:
First read the student guide to understand everything that will occur in this lab. Second read the safety guideline to ensure no one is harmed during this lab. Then gather your materials for the lab. After that section off your grass into 32 sections. Choose a quadrant and make some observations. Then choose a random sample area in your quadrant to estimate how many individual pieces of grass are present. Next, fid the average height of thegrass. Then, compare the data to quadrant #18. Plant your seeds. Count how many blades of grass are in your random sample area, and then calculate the estimated number of blades in your quadrant. Find the average height of the grass. Compare your data once again to quadrant #18, which is in the control group. Record the height of all the plants and calculate the average height for each type of plant. Compare this data with the data from quadrant # 18. Combine the data from all quadrants, and then compare the data from the experimental group to the control group. Make sure you record all your data.
Explanation:
The way by which HIV can be spread is contact with mucus, infected blood, and contaminated water. Thus, option C is correct.
Who does not need a circulatory system?A single-celled organism that doesn't required the circulatory system as human do. Since they are the singular, they can interact with their environment directly. Oxygen need to be supplied by the circulatory system and some of the cells also well differentiated so it can be only accept a certain processed food.
Most mollusks, or except for the some particular cephalopos like skids, have an open circulatory system in which the circulating fluid has been called hemolymph that flows through the body thanks to the muscle contractions that pump this fluid into the hemolymph vessel that discharges this fluid into the body cavity allowing substances and gases to be exchanges between body cells and the carrying hemolymph. Then this fluid goes back to the blood vessel and reinitiates the circulation.
Therefore, Thus, option C is correct.
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where does diffusion take place in the nervous system?
Answer:
In diffuse systems nerve cells are disseminated all through the life form, generally underneath the external epidermal layer. Hope this helps.
Explanation:
Which of the following statements is FALSE? *
The Rock Cycle is happening all the time on Earth.
Some processes of the Rock Cycle take a long time.
O All rocks were once Metamorphic Rocks.
O Most rocks on Earth are Igneous Rocks.
Answer:All rock were once metamorphic rocks
Explanation:
Melted rock deep inside Earth forms igneous rocks. Sand, silt, plant and animal skeletons make sedimentary rocks. Heat and pressure underground convert rocks into metamorphic rocks. Therefore, option (C) is correct.
What is rock cycle?The rock cycle is a web of processes that outlines how each of the three major rock types—igneous, metamorphic, and sedimentary—form and break down based on the various applications of heat and pressure over the course of time. Igneous rocks are rocks that are formed by volcanic eruptions, while metamorphic rocks are formed when heat and pressure are applied to preexisting rocks. Shale, a type of sedimentary rock, can be transformed into slate with the use of heat and pressure, for instance.
The rock cycle is an important component of our dynamic Earth because it allows rocks to shift from one type of rock to another based on their location and circumstances. It recycles rocks to build new structures when plate tectonics changes the Earth's surface.
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Which organism is an example of a club fungus?
Answer:
Mushroom is an example of club fungus
Explanation:
hope it helps, have a great day!
Explanation:
the division of fungi known as the club fungi, basidiomycota. mushroom, puffballs, and shelf fungi are all members of the group, as are the plants rust and smuts. hope it helps
Usable fresh surface water is relatively scarce. To many people, streams and lakes are the most visible part of the water cycle. Not only do they supply the human population, animals, and plants with the freshwater they need to survive, but they are great places for people to have fun.
Answer:
True.
Explanation:
Usable fresh surface water is scarce. Freshwater is not in excess on our planet. We can find it on lakes, lagoons, rivers, and swamps, but it is only 3% of the totality of Earth's water. The importance of this water is that it is the one that is suitable for humans, a large number of plants, and animals. This is why there are different methods to store and distribute fresh water amongst all the population and places that need it. Besides, the places where freshwater is, are great for activities, such as swimming, sailing, rafting, diving, fishing, etc.
Since freshwater is scarce and has so many uses, we must take care of it.
HELP ASAP!!!!! I’m bein timed :(
Acid deposition kills things ___.
A. very slowly
B. within minutes
C. within hours
D. at an average rate
Tokyo will hold the olmics in 2020.into passive
Answer:
the Olympics in 2020 will be held by Tokyo .
Answer:
Change it to passive: Tokyo will hold the Olympics in 2020. You can't change it because it is an intransitive verb. ... The Olympics are being held in Tokyo en 2020
Explanation:
Which statement best describes the process of crossing over? (1 point)
A.Homologous chromosomes pair up, and non-sister chromatids exchange genetic material.
B. Pairs of homologous chromatids are divided in half and distributed randomly into new diploid cells.
C.Homologous chromatids pair up, and non-sister chromosomes exchange genetic material.
D.Pairs of homologous chromosomes are divided in half and distributed randomly into new haploid cells.
Which cell replicates via meiosis?
A.sperm cell
B. red blood cell
C. heart cell
D.skin cell
Answer: process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other
Explanation: sperm cells
CROSSING OVER:
Crossing over is a unique process that occurs only during meiotic division. Crossing over, also called recombination, occurs during prophase I of meiosis. Crossing over is the process by which non-sister chromatids of homologous chromosomes (a pair of similar but non-identical chromosomes from each parent). Crossing over ensures genetic diversity in the gametes (daughter cells) produced from meiosis:MEIOSIS:
Meiosis is the type of cellular division employed by sexual reproducing organisms to create sex cells or gametes. Meiosis produces four genetically different daughter cells called gametes. Sperm cells are gametes produced by male organism while egg cells are gametes produced by female organisms.Learn more: https://brainly.com/question/18824252?referrer=searchResults
how does it make you feel to know you have likely eaten a genetically modified food?
Answer:
Feels kinda weird knowing that we are eating not organic food but modified. Tastes a bit different.
Explanation:
Mutation please help.
Answer: i dont know how to do this
Explanation:
When you look at your teacher's face, how can you see it?
0 Light reflects off of her face.
O Her face emanates light.
O Light refracțš through her face
O Her face emits electromagnetic radiation.
Answer:
0 Light reflects off of her face.
When people answer your question with “hey the answer is in this file here’s the link” is that safe?will it give you a virus?
Answer:
It depends on the file but I recommend to just not open the file and answer a different question just to be safe.
How are humans circulatory system similar and different to other animals
Answer:
Humans have a heart with two atria and two ventricles that pushes blood in one direction. Some animals have hearts similar to humans but, other animals have only one atrium and one ventricle or a cardiovascular system that can push blood in two directions.
Humans circulatory system is similar due to presence of artrium and ventricles and different to other animals due to number of heart chambers.
How human circulatory system similar and different to other animals?Humans have a heart with two atria and two ventricles that prevents bactward flow of blood. Some animals have hearts similar to humans but, other animals have only one atrium and one ventricle that can push blood in two directions.
So we can conclude that Humans circulatory system is similar due to presence of artrium and ventricles and different to other animals due to number of heart chambers.
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How does the nucleus control which proteins are made by the ribosomes?
1. It controls which genes get used.
2. It controls the number of ribosomes.
3. It controls the speed with which proteins are made.
4. It controls the order in which proteins are made.
Answer: it controls genes that get used.
Explanation:
A copy a chromosome made during cell division are called
Answer:
As a cell prepares to divide, it must make a copy of each of its chromosomes. The two copies of a chromosome are called sister chromatids.
Which methods reduce friction? O increasing speed O lubricating surfaces O using sticky materials O increasing surface roughness
Answer:b)lubricating surfaces
Explanation:took it on edge hope this helped
what human activities can redistribute carbon loads in the cycle so that global warming might slow down or decrease choose two different real world examples and explain the flux in carbon loads that would result from an increase in that human activity. make sure to explain what biological physical or geological process would shift the carbon load from one point in the cycle to another.
Answer:
Reducing the use of fossil fuels in vehicles.
Explanation:
Reducing the use of fossil fuels in vehicles and use of electric vehicles which reduces air pollution as a result decrease or slow down of global warming occur. Use of fossil fuels is the main reason for increasing carbon concentration in the environment. If more plants were planted around the world the high concentration of carbon decreases in the environment due t photosynthesis of plants. Avoid use of activities that increases the carbon concentration in the environment.
Match each term with its best definition.
Plutons, Sills, Injection, D*kes
Check the comments for the answer.
Answer:
hey u blocked me pliz unblock me yer
Explanation:
Answer:
across existing rock.
Vascular plants are able to grow taller than nonvascular plants because A. lignin in the cell walls of vascular tissue helps the plant overcome gravity. B. they can live in drier areas than nonvascular plants. C. they rely on osmosis to transport materials throughout the body of the plant. D. there is more sunlight in the areas where vascular plants live.
Answer:
c
Explanation:
Answer:
A
Explanation:
I got it wrong the first time
Does each square on a "punnet square" represent 4 offspring or does it represent the odds of one offspring?
Answer:
Explanation:
Punnet square is a square diagram used to predict the genotypes of the offspring of a particular cross or breeding experiment.
It represent 4 offsprings of the cross between two parents. Each punnet contain the alleles in the right combination and proportion.
Punnet square is use to determine the percentages of different genotypes present in the offspring of two parents and to determine missing alleles in a cross.
it can also be used to predict the percentages of phenotypes in the offspring usually from a parents with known genotypes.
Need answer ASAP please thanks
Answer:
rr
Explanation:
you're welcome--------
Describe what a spreading center is and how a volcano
forms there.
Explanation:
Spreading center volcanism occurs at the site of mid-oceanic ridges, where two plates diverage from one another. As the plates are pulled apart, hot ashtenophere rise upward to fill voids of the extended lithosphere.
GIVING BRAINLIEST AND THE REST OF MY POINTS!!!!! :D
Two parts of the food chain are described below:
Part #1: These organisms are the ending of the food chain.
Part #2: This passes energy to plants and animals.
Which statement is true about these two parts of the food chain?
A) Part 1 are consumers, Part 2 is the sun
B) Part 1 are consumers, Part 2 are producers
C) Part 1 are producers, Part 2 is the sun
D) Part 1 are producers, Part 2 are consumers
(DONT ADD ANY LINKS)
The correct statement is B) Part 1 are consumers, Part 2 are producers.
What are the two parts of food chain?Part 1 of the food chain describes organisms that are the end of the food chain, which would typically be consumers or animals that feed on other organisms, including plants and other animals.
Part 2 of the food chain refers to something that passes energy to plants and animals. This is typically the sun, which provides energy through photosynthesis to producers, or plants, that convert light energy into chemical energy stored in food. Producers form the base of the food chain, providing energy to all other organisms in the ecosystem through the food they produce.
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Mosses, liverworts, and hornworts all have ______ reproductive characteristics?
embryonic style
asexual offspring
alteration of generation
Answer:
i think its alteration of generation
Explanation:
i studied this but i have loss of memory