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Related Questions
Which are most responsible for creating acid rain pollution?.
Answers
A new microbiology student failed to properly sterilize the pipet between creating E. coli and S. epidermidis cultures from the tablets in the lab kit. How would this mistake be recognized when the mixed culture is streak plated
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With this error, the culture medium can be visualized with two different types of bacteria, with different stains.
In addition to staining in culture medium, what are the differences?Escherichia coli, or E. coli, is a bacterium that naturally inhabits the intestines of people and some animals, without any signs of illness.
Staphylococcus epidermidis is a Gram positive, coagulase negative bacterium that is part of our normal flora. The microorganism colonizes human skin and mucous membranes, notably moist surfaces such as armpits, nostrils, etc.
With this information, we can conclude that this error, the culture medium can be visualized with two different types of bacteria, with different stains.
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How do we represent dominant and recessive alleles?.
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Answer:
Dominant alleles are represented with an uppercase letter.
Recessive alleles are represented with a lowercase letter.
Explanation: Take for example, “AA”. Both “A’s” in this allele pair are uppercase, so they are dominant alleles. As another example, let’s say an allele pair was “bb”. Since both of the “b’s” are lowercase, they each would be a recessive allele.
I hope this helps you!
The vegetative body parts of a higher plant is made up of-----------,------------and----------.
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Explanation:
The vegetative pats of a higher plant is made up of ROOTS,STEM and LEAVES.
Which two phases of meiosis are most likely to cause chromosomal disorders?
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Answer:
Nondisjunction can occur during anaphase of mitosis, meiosis I, or meiosis II. During anaphase, sister chromatids, will separate and move to opposite poles of the cell, pulled by microtubules.
Explanation:
Grasses are the dominant producers in the prairie ecosystem. Mice eat the grass seeds, snakes eat the mice,
and hawks eat the snakes.
The mass of a hawk is around 500 grams.
In this ecosystem, how many hawks can be supported by 250,000 kilograms of producers?
Recall that 1 kilogram is equivalent to 1,000 grams.
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Answer:
500,000 hawks
Explanation:
250,000kg=250,000,00grams
250,000,000/500=500,000hawks
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10 A solution of sugarcone was, boiled with hydrochloric acid Sodium carbonate was heated with a Benedict solution An orange precipitate was formed .Why' was e solution boiled with hydrochloric acid.
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Answer:
the answer to the nearest whole thing was that a few times now that I have the same
Natural gas drilling locations are determined by _______. a. random drilling b. seismic surveys c. natural gas dogs d. satellite surveys please select the best answer from the choices provided a b c d
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Natural gas is produced naturally by decomposed plants and animals which are subjected to intense heat from earth and pressure from rock. Seismic surveys are often used by geologists for its drilling.
What are the factors involved in natural gas drilling?When extracting natural gas, it is very much important to identify correct location and to identify some factors regarding location. Below are the factors for consideration.
Extraction of resource: it is very important to select the exact site for the extraction. Various states have laws for this process.Selection of drilling site: specific locations are selected based on factors like topography, reservoir characteristics, geology, etc. This is also done after clearing some laws.Thus, the correct option is option b.
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Answer:
short answer: OPTION B
Explanation:
just took the quiz on edge
Enzymes _______ the activation energy threshold required to start a chemical reaction.
raise
lower
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Answer:
lower
Explanation:
Enyzmes usually lower the activation energy required to start a chemical reacion. It's useful to remember enyzmes as compounds which help speeden up different chemical processes. They do this by decreasing the required activation energy and therefore increase the chance of a chemical reaction occuring.
Enzymes lower the activation energy threshold required to start a chemical reaction.
Definition of Enzymes: a substance produced by a living organism which
acts as a catalyst to bring about a specific biochemical reaction.
Hope that helps!
compare and contrast the five types of evidence that support the theory of evolution
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There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology. The basic idea of natural selection is that a population of organisms can change over the generations if individual having certain heritable traits leave more offspring than other individuals. The result of natural selection is evolutionary adaptation, a population’s increase in the frequency of traits that are suited to the environment. In modern terms, we would say that the genetic makeup of the population has changed over time, and that is one way to define evolution. Evolution leaves observable signs. There are five lines of evidence that support evolution: the fossil record, biogeography, comparative anatomy, comparative embryology, and molecular biology.
Pleas help fast! I am not happy with my grade on this and I'm on my last try!
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Answer:
im pretty sure its A and B
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Viruses require __________ for growth (to spread).
bacteria
plants
animals
living cells (host)
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Answer:
Living cells
Explanation:
Viruses require living cells. Viruses aim to replicate themselves, and cells do exactly that. By injecting their DNA into a living cell, the cell will replicate the virus's DNA and infect other cells, spreading it more and more in the organism.
One of the most important forces that led to the expansion of urban areas is the
O airplane
O automobile
O city bus
0 train
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Answer:
The answer is train. And if not then its automobile.
Explanation:
Trains have been the first thing for transportation and for the trade company they helped you get place to place and they went a long way.
-Hope this helps!
- Justin :)
For this testable question write a proper hypothesis and identify the variables.
A truck driver wants to find out if there is any relationship between the amount of gas he uses per kilometer and the speed that he's going.
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The variables are - the amount
Of gas , and the speed in which he is going
4. Prokaryotes differ from eukaryotes in that prokaryotes
A) have only a nucleus, cell membrane, and cytoplasm
B) have ribosomes and mitochondria
C) have a true nucleus and may have a cell wall
D) lack a true nucleus but may have a cell wall
E) lack DNA but can synthesize proteins
What is the right answer?
Answers
Answer:
D
Explanation:
prokaryotes are things like bacterial cells , they have no true nucleus just a long ring of dna.
Eukaryotes are things like animal cells they have a nucleus (opposite of prokaryotes)
1.what causes muscle fatigue after avery hard physical exercise ?
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During a very hard physical exercise lactic acid will be alocated, that causes muscle fatigue.
Creatinine has a renal clearance of 140 ml/min. Why is this?.
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Answer:
It is secreted by the renal tubules
Explanation:
What are the three distinct characteristics of fish?
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Answer:
All fish are cold-blooded, which is also called ectothermic.
Water Habitat. Another shared characteristic amongst all fish is that they live in water.
Gills to Breathe.
Swim Bladders. .
Explanation:
questions in the attached img. someone help me pls
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Answer:
A. Medicine — Plasmids are used as an anti-stress medicine to cope with stress-related conditions. It is also used replicate proteins. It is also used in gene therapy.
B. Agriculture — It is used for metal resistances. It is also used for antibiotic resistances. It provide bacteria with genetic advantages.
What do smooth muscle cells look like under a microscope? A.small,striated,and 1-2 nuclei per cell. B.long and thin with striations and multiple nuclei. C.smooth ,1 nuclei,and connected by gap junctions.
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Answer:
your answer would be C
C.smooth ,1 nuclei,and connected by gap junctions.
Explanation:
This is because, the other options include it having striations, and it does not have that.
Hope it helps :)
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Tori
Smooth muscle cells look like smooth, single nucleate, and connected by gap junctions under the microscope. Thus, the correct option is C.
What are Smooth muscle cells?
Smooth muscle cells are also called as involuntary muscle cells. These muscle shows no cross stripes under microscopic magnification. Muscle cells are made up of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike the striated muscle, contracts slowly and automatically in the body.
At a cellular level, smooth muscle cells can be described as an involuntary, non-striated muscle cell. Smooth muscle cells consist of alternate thick and thin filaments which are not arranged into sarcomeres however it gives a non-striated pattern. On further microscopic examination, it appears homogenous.
Therefore, the correct option is C.
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Please Help! Due in 5 minutes!
Which of the following areas would be the most suitable for species to survive a mass extinction event?
A. the continent of Asia
B. the country of Spain
C. the state of Florida
D. the Bay of Islands
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Birds: Birds are the only dinosaurs to survive the mass extinction event 65 million years ago. Frogs & Salamanders: These seemingly delicate amphibians survived the extinction that wiped out larger animals. Lizards: These reptiles, distant relatives of dinosaurs, survived the extinction.
Answer:
It might be...B or C? I'm not sure.
Explanation:
If I had to guess I would pick...C but That's up to you!
I hope that helped in some kinda way!
Rex
An enzyme which accelerates a chemical reaction is considered.
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Answer: An enzyme that accelerates a chemical reaction is considered to be a catalyst.
Hope this Helps!
Answer:
biological catalysts
Explanation:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Body structure and colour of animal help them in adaptation. Justify this statement with an example.
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Answer:
Cuttlefish
Explanation:
They camouflage with their surroundings to attract their prey, but also hide from predators.
Researchers use all of the following to study the impact of heredity on behavior except __________ studies. a. family b. peer c. adoption d. twin
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Answer:peer
Explanation:
Researchers use all of the following to study the impact of heredity on behavior except peer.
Researchers use all of the following to study the impact of heredity on behavior except why?
When looking at studies relating to the heredity of traits we want to see if the child got a trait from the parents and their genes or from the way the child grew up with the parents.
That means that peers are not useful to us in those studies. Family is very useful since we need to look at the family and how it raises a child. Adoption is useful to see if an adopted child has the same traits as a biological child.
And twins are useful if they grew up in different circumstances from one another.
Thus, option "C" is correct.
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In which location would you expect to find the greatest species diversity?
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Tropical ecosystems.
Explanation:
Species richness is greatest in tropical ecosystems. Tropical rain forests on land and coral reefs in marine systems are among the most biologically diverse ecosystems on Earth and have become the focus of popular attention.
2. Which of the following is true of the Golgi apparatus?
A) It is especially extensive in cells specialized for absorption.
B) It consists of flattened membranes dotted with ribosomes.
C) It is a membrane-bound vesicle with hydrolytic enzymes.
D) It is specialized for production of hydrogen peroxide.
E) It is involved in modifying and shipping proteins out of cells.
an
What is the correct answer?
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The answer is E; after proteins are produced by the rough endoplasmic reticulum / ER, the proteins go to the Golgi Apparatus to be repackaged and modified before being sent out of cells!
Hope this helps :)
Endangered species are species with decreasing populations that are at risk of extinction. Which of the following would MOST LIKELY increase the risk of extinction?
A. Sudden loss of habitat
B. Decreased number of natural predators
C. Increased availability of reproductive mates
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Explanation: If a decreased number of predators were to happen, this would cause populations to rise because of less danger in the environment. If more mates are available, this can also cause a boom. It may also create competition for limited resources but i doubt it and the most plausible answer is A.
Which hormones promote facultative water reabsorption?.
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Answer:
The correct answer is option (d) ADH. The hormone that is responsible for facultative water reabsorption is the antidiuretic hormone (ADH).
Which of these materials are organic? (Select all that apply.)
A. rock
B. leaf
C. clay
D. bacteria
(PICK MORE THAN ONE) also no links or troll answers
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Answer: All: A, B, C, D
Explanation:
All of these materials are organic. This means they can be found naturally occurring in our world, Earth. This means you should select all of them.
✓ A. rock
✓ B. leaf
✓ C. clay
✓ D. bacteria
The pulmonary circulation conveys blood that is ______ in oxygen to the lungs before returning back to the ______ side of the heart.
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The pulmonary circulation conveys blood that is low in oxygen to the lungs before returning back to the left side of the heart.
The pulmonary circulationThe circulatory system is divided into two main parts namely:
pulmonary circulation and systemic circulation.The pulmonary circulation involves the movement of blood between the lungs and the heart.
Blood from the systemic circulation returns to the right side of the heart where it is pumped through the pulmonary artery into the lungs to be oxygenated.
After oxygenation has taken place in the lungs, the blood returns to the left side of the heart through the pulmonary veins.
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