Which conclusion about the growth of new bacterial cells does the experiment support?
O Heat helps bacterial cells grow new bacterial cells faster.
New bacterial cells can only arise from preexisting bacterial cells.
The amount of available nutrients impacts the growth of new bacterial cells.
Growth of new bacterial cells depends only on the presence of nutrients.
Answers
Answer: New bacterial cells can only arise from preexisting bacterial cells.
Explanation:
Option A is wrong because when heat was applied, there was no new bacterial growth. Most likely because the heat killed the bacteria cells. Option C is also wrong as well the third trial had nutrients but no new bacteria cells grew.
Option D is wrong because in Trial 1, there were nutrients and yet no new cells were formed. This means that growth of new cells depends on more than nutrients alone.
This leaves option B as the correct answer which is proven by the lack of growth of new cells when there were no pre-existing ones in trial 3.
Related Questions
During Prophase I replicated homologous chromosomes pair up and undergo synapsis. What testable question is generated regarding synapsis and genetic variability by Figure 1?
A. Is the distance between two gene loci related to crossover rate?
B. Does crossing over occur more often in some chromosomes than in others?
C. Is crossing over inhibited by methylation? D. Is crossing over promoted by methylation?
Answers
Answer: A
Explanation: I saw it on quizlet
A study is being done to test the effects of temperature on the number of microbial colonies. Four different incubators are set up, each at a different temperature with one culture plate in each. Each plate has the same nutrient content, pH, and are inoculated with microorganism samples from the same source. At the end of the experiment, the number of colonies on each plate is counted. What is the independent variable
Answers
Answer:
The correct answer is - the different temperatures of incubators.
Explanation:
An independent variable is a variable in a study or research which is manipulated or changed to check or find the effect on the dependent variable. The independent variable is the only factor that changes in research while other factors remain constant that can affect the result in the study.
In this case or study, there is the only factor that is manipulated is the temperature of incubators is manipulated to see the effect of temperature on the number of microbial colonies. Thus, the different temperatures of incubators is the independent variable here.
3. A moving car backs into a parked car in a
parking lot. Why would the bumpers on both
cars be dented?
A. The parked car was made of weaker material
than the car that was moving.
B. The car that was moving was made of weaker
material than the parked car.
C. When one car bumps into the other car, they
collide with equal and opposite force.
D. The bumpers of both cars would not have
become dented as a result of this minor
collision.
Answers
Answer:
A. The parked car was made of weaker material than the car that was moving.
Explanation:
1. Tina is a microbiology student using an HOL kit for her online course. She shares a small apartment with her two cats, and has a full time job across town. Suggest two potential locations in the apartment for Tina to store the lab materials and incubate cultures. Explain why these locations are appropriate choices for Tina.
Answers
Answer:
A cabinet and a small closet.
Explanation:
A cabinet and a small closet are the best locations to incubate cultures because these location are safe from the cats interaction with the microbial culture. A cabinet consist of a cupboard with shelves or drawers for storing things. Closet is a tall cupboard which is used for storage things so due to height the cats can't reach to these place so the culture is safe.
In the protein synthesis STEM case, which of the following mutations/errors created
a nonfunctional ADA enzyme (protein) which in turn caused deoxyadenosine to build
up?
A. tRNA error
B. Premature stop codon mutation
C. Active site mutation
Answers
Answer:
B. Premature stop codon mutation
Explanation:
Should Marijuana be legalized? Why or Why not?
Answers
The second farmer used Technique B: Used a genetically modified variety of corn. The plant produces an insecticide which selectively kills only the moth larvae as it feeds on the corn. What is a likely impact on the farmer of growing such a variety of corn?
A) The financial costs for the farmer would be lowered since LESS crops would be lost to pests.
B)The financial costs for the farmer would be lowered since MORE crops would be lost to pests.
C) The farmer may be held responsible for increasing chemical pollution.
D) The farmer's expenses for pest control would increase due to an increase in bee population.
Answers
Answer:
A) The financial costs for the farmer would be lowered since LESS crops would be lost to pests.
Explanation:
Planting of variety with a resistance strain to pest is one of the gene modification that occurs in plants, this has greatly help farmers improve on productivity, reducing the amount of money spent on controlling insect pest invasion on their farm.
Because the crop is resistant to pest no extra cost of purchasing chemicals to control pest on the farm and the number of damage to crop will be reduce in turn reducing the amount of plant lost to pest invasion this will lower the financial cost of the farmer and also an increase productivity.
Refer to the experimental set-up above. What is the purpose of the overturned bucket (note it is solid, not clear) in part A?
Answers
Answer:
The bucket is taking in oxygen which makes the water inside the hot and thermometer solid its not clear because its taking in energy.
Answer:
hhahahha i need my points on my alt account
Explanation:
Which organelle/part of the cell would say this if it could speak? I am like the broth or the liquid in vegetable soup.
There are carrots, peas, celery, and potatoes floating all in me.
1) Cytoplasm
2) Mitochondria
3) Nucleus
4) Vacuole
5) Cell membrane
Answers
Answer:
cytoplasm
Explanation:
woohoo biology.
1 An animal that eats other animals for energy are called
2. Several different populations living together live in an
3. An ecosystem contains ONLY living organisms. (True or False)
4. The food chain arrow going from the mouse to the owl shows that the
mouse is the
5. What level of organization in an ecosystem comes AFTER population?
6. Organisms that eat autotrophs.
7. The start of the flow of energy in every food web is the
8. ---------- predators live on the top of an energy pyramid.
4. A plant that makes its own food from sunlight, air, and water is a
10. Living things that break down decayed plants and animals into smaller
organisms are called
Answers
Answer:
heterotrophs animal=1
Explanation:
heterotrophs animal=1
4=aututrops plant
Which organelles must work together to provide food and energy to a
plant cell?
Answers
The following diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
Answers
Answer:
It stays the same
Explanation:
If you count each in both pictures, none are added nor removed.
Answer:
stays the same
Explanation:
The incidence of V. vulnificus infections is increasing, especially in northern parts of the United States, compared to 20 years ago. Can you think of any reason why this might be happening?
Answers
Answer:
The effects of climate change may be associated with the increased incidence of V. vulnificus infection
Explanation:
Vibrio vulnificus is a harmful bacterium that causes a serious disease due to eating contaminated seafood, which is the main cause of seafood-related deaths in the USA. V. vulnificus is naturally present in the flora of coastal waters around the world and this bacterium has been isolated from a variety of seafood (e.g.., fish, oysters, shrimp, etc). Epidemiologic studies have shown that the incidence of V. vulnificus infection has increased dramatically since 1996. During this same period, climate change has been responsible for the increase in salinity and temperature of the coastal waters (i.e., the natural habitat of this bacterium). In consequence, it is reasonable to suppose that the change in climatic conditions may be associated with the increased incidence of V. vulnificus infection.
Think about the podcast that you listened to in the Lesson 2.01 Introduction. Write a one-paragraph (using complete sentences) description of the experiment that was performed on these two women. Be sure to include the following: Why was the experiment conducted? What was done to the two women in order to conduct the experiment? What conclusions could be made from this experiment? Why do you think that experiments like this are no longer performed?
Answers
Explanation:
The experiment was conducted with the purpose of understanding what makes us "who we really are"; our environment or genetics?
The two women, Paula Bernstein and Elyse Schein identical twins were separated from each other at birth and only got to be reunited when they turned age 35.
"It's undeniable that genetics play a huge role," says Paula. This makes us concludes that genetics still play a role in determining who really are.
Such experiments are no longer performed today because there are legal restrictions put in place against such actions, including the ethical issues it created.
How do changes in wind currents effect the short term climate in a region?
Answers
Answer:
Explanation:
When wind blow, move cold and hot temperature include moisture. When wind blow over the sea, they carry moisture from the place to another geographical zone, when the get to a colder area, the condense and fall back as water droplets. The way the wind pass each other and they directions they move cause short-term change in climate
A rna codon is uca what would be the amino acid created from this rna
Answers
Answer:
Methionine!
Explanation:
It's a stop codon
Is an ionic bond more like a polar covalent bond or a non-polar covalent bond? Explain
Answers
Answer:
POLAR
Explanation:
The formation of an ionic bond is the result of the transfer of one or more electrons from a metal onto a non-metal.
Non-polar is an equal sharing of electrons, whereas polar is an unequal sharing of electrons.
Ionic bonding is on one extreme with a complete transfer of electrons forming charged ions. Non-polar covalent bonding with equal sharing of electrons is at the other extreme.
Even though ionic bonding is kinda in the middle, it leans more towards polar because they aren't two opposite extremes.
hope this helps ! :)
The process by which an organism makes more of its own kind is
Answers
Answer:
yes it is reproduction hope it helps
Why do some organisms make one type of protein for a feature while other organisms make two? RIGHT ANSWER GETS CROWN
Answers
Answer:
For every gene, there may be several possible versions. Different genes carry instructions for making different proteins. If the gene copies are heterozygous, two types of protein are produced, if the gene copies are h0m0zyg0us, one type of protein is produced.
Explanation:
Every gene has several variants. Genes encode proteins. If the gene copies are heterozygous, two types of protein are produced; if they are homozygous, one type of protein is produced.
What is a gene?DNA, or in the case of certain viruses, RNA, is the medium in which an organism's genome is written. A gene is a section of the genome that contains the genetic instructions for making a particular protein or RNA. Codons are units of three nucleotides in a gene that each code for a specific amino acid. Genes that code for proteins are made up of these codons.
There might be multiple variants of each gene, depending on the circumstances. Instructions for the production of a variety of proteins are contained within each gene. If the gene copies are homozygous, then only one type of protein will be produced; however, if the gene copies are heterozygous, then two different types of protein will be produced.
Learn more about codons, here:
https://brainly.com/question/20975435
#SPJ5
A neurologist noticed that in one patient, damage to brain structure A resulted in a major
disruption in speech production, but left hearing ability intact. However, in another patient,
damage to structure B left major hearing impairment, but did not affect speech production.
This scenario is an example of...
Wernicke's aphasia.
a double dissociation.
Broca's aphasia.
a single dissociation.
Answers
Answer:
a double dissociation.
Explanation:
Double dissociation is a psychological term used to describe a scenario whereby two mentally concerned processes are independent in function i.e they work specifically for different functions. In double dissociation, damage to one neurological (brain) area affects only one of two functions and have no effect on the other.
This is the case in this question where a neurologist noticed that damage to brain structure A of a patient resulted in a major disruption in speech production, but left hearing ability intact while a damage to structure B in another patient left major hearing impairment, but did not affect speech production. This example portrays what DOUBLE DISSOCIATION explains.
when you move your hand up and down while holding on a jump rope, you make a wave. What is the medium
Answers
Answer:
The medium of the wave is the Rope.
Explanation:
This is because it is transverse wave and transverse wave need a medium to transfer energy and this is because in transverse wave,particles of the medium move in a direction that is perpendicular to the direction of the transverse wave. From the question, when you move you hand up and down, you make a wave and the direction of the wave is also up and down which is perpendicular to the direction of the wave.
Plants will grow more when the day is longer
Answers
so what’s the question?
is this supposed to be a true and false question... or is this a statement you were making...
Complete the sentences by matching the names of trees to the appropriate blanks. To do this, drag the names on the left into the appropriate blanks in the sentences on the right. Terms may be used more than once.
a. cedar
b. mango
c. elm
d, maple
e. pine
Evergreens are plants that maintain their leaves in all seasons and include trees such as___, ____, and____.
2. Deciduous trees lose their leaves seasonally and include trees such as___and___.
3. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include___and___.
4. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as___, ___, and____.
Answers
Answer:
1. cedar, mango and pine
2. elm and maple
3. pine and cedar
4. mango, elm and maple
Explanation:
Evergreen trees are plant tree species that remain green across seasons, even in cold/dry conditions, thereby contrasting with deciduous trees that lose their leaves in cold/dry conditions. Conifers (Coniferophyta) are gymnosperm plants that produce seeds without fruit/flowers. Conifers are vascular land plants composed of one that one class named Pinopsida, which consists of perennial plants with secondary growth. Moreover, mango, elm, and maple are hardwood trees that have seeds within fruits (i.e., they are angiosperms), which lose their leaves seasonally (i.e., they are deciduous trees).
which cell is a plant cell and how do u know
Answers
Answer: B
Explanation: Its B becuase a plant cell has to contain a lot of things inside of it so it would be larger then A. If you look at the the ways they look (B and a plant cell) you'll see that B looks more like it.
Base from your opinion, why we need to study the beginning of the universe? Give at least five reasons.
Answers
Answer:
To know the origin of life, to have an idea of our ancestors, to be aware of the immensity of the universe, for informational reasons and to respect nature.
Explanation:
Many scientists and psychologists affirm that it is very complex for the human mind to understand the cycle of life and the origin of the universe, due to its immensity.
This is how it is necessary to be in constant scientific updating so as not to transmit false information and unravel human myths that are generated by lack of understanding of life-death.
Why are models useful in Earth science?
Answers
Answer:
because it represents what happens
Explanation:
Match each digestive Juice or enzyme to the organ where it performs.
Answers
Explanation:
hope it helps
mark me brainliest please
During Prophase I replicated homologous chromosomes pair up and undergo synapsis. What testable question is generated regarding synapsis and genetic variability by Figure 1?
Answers
Answer:
A
Explanation:
the larger the loci distance the more chances there is for a crossing voer to occur.
Which of the following describes a non-sense mutation?
A.Base pair change results in a premature stop codon; protein is nonfunctional.
B.Base is changed but the resulting amino acid is the same as in the non mutant DNA. No outward changes
.
C.A base is either added or deleted and causes the codons to be read incorrectly.
D.Base pair change results in a different amino acid; this may or may not affect the protein that result.
Answers
Answer:
A.Base pair change results in a premature stop codon; protein is nonfunctional.
Explanation:
Mutation, generally, refers to any change that occurs to the genetic sequence of a DNA. It can occur in different forms, hence, has different types. One particular type is the base pair substitution mutation, which involves the replacement of one or more nucleotide base by another in a sequence.
Base pair substitution can either result in one of the following namely: silent, missense, and nonsense. In NONSENSE mutation, the replacement of bases in the sequence causes the translation process to stop because a STOP CODON is prematurely encountered. Hence, the protein is non-functional.
i would appreciate it a lot if you answered this:
Answers
Answer:
the nucleus
Explanation:
Chromatin is a mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromatin is located in the nucleus of our cells. The primary function of chromatin is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus.