When testing the effect of penicillin on the growth of E. coli, penicillin would be considered the? A.independent variable B. dependent variable C. constant

Answers

Answer 1
A. It’s the thing you change and you’ll measure the E. coli growth

Related Questions

Without land regulations to protect rainforests, and continues to be destroyed using slash and burn methods Which environmental impact of rainforest deforestation makes rainforest species less resilient to
change?
Increased fire and drought
Increased pollution
Displaced inbes
Habitat fragmentation

Answers

Answer:

Increased pollution is your answer!

Explanation:

Increased pollution is your answer because:

1. ⇒ Burning of mostly anything creats, and all the materials in the forest are one of those materials that will create smoke. And smoke is made out of carbon dioxide, and other poisonous gases that are very bad for our atmosphere.

2. ⇒ The damage from the fire will also cause a lot of damage to the trees and plants. That is very bad because trees are very important for our environment, in their leaves, they have a chemical called chlorophyll, this chlorophyll absorbs sunlight and turns it into oxygen. Not only sunlight is needed, there is also, water, nutrients needed.

I hope I could help you today! Thanks!

Have a great day studying!

3 effects of pH change

Answers

1) variation in the UV spectra in batch culture. Mineral medium (MM) spectrum (dot), 4-CPh 120 mg L−1 (empty diamond), 4-CPh preozonated (filled triangle). Biodegradation of preozonated 4-CPh by a mixed microbial consortium at 30 h (empty square), 62 h (empty inverted triangle), 102 h (empty circle) of culture, respectively. (B) MM spectrum (dot), 2,4-DCPh 120 mg/L (empty diamond), 2,4-DCPh preozonated (filled triangle). Biodegradation of preozonated 2,4-DCPh by a mixed microbial consortium at 30 h (empty square), 72 h (empty inverted triangle), and 191 h of culture, respectively

2) The UV spectrum profiles of the 4-CPh are compared in Fig. 12.5A. The ozonated spectra show only the presence of organic acids (approximately 20% of the initial COD removal), found in the typical wavelength region for these compounds (210 nm)

3) One can note from this table that oxalic and formic acids are the main identified byproducts for all phenols. Also, all phenolic intermediates different from hydroquinone and cathecol were not detected, nor the organic acids that have been reported in other studies

Compare 41 Calories to 410 kcal (1 kcal = 1,000 calories). (1 point)
O 41 Calories is greater than 410 kcal
O 41 Calories is equal to 410 kcal
41 Calories is less than 410 kcal
It is not possible to compare these two values

Answers

From the calculation, we can deduce that 41 Calories is less than 410 kcal.

Given the following data:

Energy in calories = 41 CaloriesEnergy in kcal = 410 kcal

To compare 41 Calories to 410 kcal, we would simply convert the given values to the same base values:

Hence, we would make Calories the base value by converting the value in kcal to Calories as follows:

Conversion:

1000 Calories = 1 kcal

41 Calories = X kcal

Cross-multiplying, we have:

[tex]1000X =41\\\\X=\frac{41}{1000}[/tex]

X = 0.041 kcal.

From the calculation, we can deduce that 41 Calories is less than 410 kcal.

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Answer: 41 Calories is less than 410 kcal

Explanation: I took the test and passed

what is the thickest and longest nerve in the human body

Answers

Answer:

It's your sciatic nerve.

Nearly all forests in ________ have been cut at least once during the past 300 years, so very little original (virgin) forest remains.

Answers

Answer:

In the United States.

Explanation:

It doesn't have very many original forests because people have been chopping them down and planting new ones.

Out in the distance you see an oak tree

Answers

Answer:The rabbit is the primary consumer.

Explanation:

how are humans responsible for environmental pollution​

Answers

Answer:

Humans are responsible for the environmental pollution in many ways . Some of the points are as follows :

1 ) People throw the wastes wherever they like instead of using dustbins .

2 ) The various types of gases from the industries which harms the nature .

3 ) Cutting off the trees . ( people can cut but also must plant a new one )

4 ) Farmers using different chemical substances in high amount in the crops .

5 ) Burning plastics , tires etc .

This was my way to answer the question , if you need then you can write in paragraph .

let me know if its incorrect . :-)

One place in the us where tidal wouldn’t work

Answers

Answer:

Tidal wouldn’t work anywhere in the US

Explanation:

To use tidal you would have to be close to a great body of water the only US state that is even close is Georgia

Hi can someone plss help me with this!!

Answers

Explanation:

4. evaporates , ocean

8. transpiration,

9. acid rain

What happens in prophase.

Answers

During prophase, the parent cell chromosomes — which were duplicated during S phase — condense and become thousands of times more compact than they were during interphase. ... Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.

PLEASE HELP ME


Amplify Science lesson 2.7 activity 3

Answers

Answer: Elisa has diabetes.

Explanation: Elisa has diabetes. I know this because she is constantly tired which is a huge symptom of low blood sugar which is what people with diabetes have. Therefore if she has such a huge sympto of it that maker her very likely to have diabetes. Second of all she is getting enough sleep and trying to eat the right foods lately but it doesnt seem to be helping. This shows that its not something she’s doing and since these things dont necessarily cure diabetes it’s likely that she has diabetes and needs to adjust her diet to help her condition.

which process is typical of cancer?

-Replacement Of Damaged Lungs
-DNA Replication
-Cellular Death
-Uncontrolled Cell Division

Answers

Answer:

Uncontrolled cell division

(and I think that HIV/AIDS Does the opposite; slows cell division)

Answer:

uncontrolled cell division

Explanation:

Cancer cells are cells gone wrong — in other words, they no longer respond to many of the signals that control cellular growth and death. Cancer cells originate within tissues and, as they grow and divide, they diverge ever further from normalcy. Over time, these cells become increasingly resistant to the controls that maintain normal tissue — and as a result, they divide more rapidly than their progenitors and become less dependent on signals from other cells. Cancer cells even evade programmed cell death, despite the fact that their multiple abnormalities would normally make them prime targets for apoptosis. In the late stages of cancer, cells break through normal tissue boundaries and metastasize (spread) to new sites in the body.

explain one weakness of using the human nervous system to explain human behaviour

Answers

Your nervous system guides almost everything you do, think, say or feel. It controls complicated processes like movement, thought and memory. It also plays an essential role in the things your body does without thinking, such as breathing, blushing and blinking.

The brain changes which contribute to addiction occur in parts of the brain called the;.

Answers

Answer:

basal ganglia, the extended amygdala, and the prefrontal cortex

Explanation:

the green pigment that traps the energy of sunlight for photosynthesis is

Answers

Answer:

The green pigment that traps the energy of sunlight for photosynthesis is called chlorophyll.

Answer:

chlorophyl

Explanation:

yea i learned this is science last year



Which of the following is a reasonable claim the researchers can make based on the data in the graphs?

Answers

Answer:

First give the options we can't tell random ir may be wrong give options because in question it is asking which of the following if we say any randomly it becomes wrong.

receptors for neurotransmitters are of primary functional importance in assuring one-way synaptic transmission because they are mostly found on the _____.

Answers

Answer:

The axonal membrane (place as brainliest so others know its correct)

Receptors for neurotransmitters are of primary functional importance in assuring one-way synaptic transmission because they are mostly found on the Axonal membrane.

What are Neurotransmitters?

Neurotransmitters may be defined as the type of chemical substances that are correspondingly liberated at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction. They are released in the location known as the synaptic cleft.

The receptors of these neurotransmitters are present in the plasma membrane of postsynaptic cells which selectively bind the transmitter. They are integral membrane glycoproteins with multiple transmembrane segments.

Some examples of neurotransmitters may include serotonin, GABA, dopamine, acetylcholine, etc.

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Before fossil fuel use became widespread, which of the following did people use for a. energy?
b. wind
c. water
d. animals
e. all of these

Answers

Answer: im not 100% but i think its E all

Explanation:

Use examples to explain how the geosphere interacts with two other of Earth's spheres. Explain the interaction for each using complete sentences. HELPPPP

Answers

Several examples of sphere interactions can be inferred from this photograph: Humans (biosphere) built a dam out of rock materials (geosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere).

(PLEASE MARK ME AS BRINLIEST)

Answer: Dont have one just wanted to help this person get brainliest

Explanation: I like helping

active transport moves mineral ions into root hair cells through cell membrane proteins. Explain how protein molecules move ions across a membrane during this process. (3marks)

Answers

Explanation:

Small and nonpolar (hydrophobic) molecules can freely pass through the membrane, but charged ions and large molecules such as proteins and sugars are barred passage.

Nonpolar and small polar molecules can pass through the cell membrane, so they diffuse across it in response to concentration gradients.

Determine the product formed when compound b is treated with each reagent.

Answers

Answer:

okay

Explanation:

56

which lipid composition option has the least membrane fluidity?

Answers

Answer:

I think it would be saturated fatty acids

Which statement correctly describes mitotic cell division?​

Answers

Answer:

Explanation:

“Although part of your question is missing, you might be referring to this full question:

Which of the following correctly describes how mitosis and meiosis are similar?

A. Sister chromatids segregate to opposite poles of the cell during both mitosis and meiosis.

B. Crossing over occurs between homologous chromatids during both mitosis and meiosis.

C. Both mitosis and meiosis produce diploid daughter cells.

D. Both mitosis and meiosis produce genetically identical daughter cells.”

The statement that correctly describes how mitosis and meiosis are similar is “Sister chromatids segregate to opposite poles of the cell during both mitosis and meiosis”.  

Mitosis and Meiosis both are classified under cell division that tends to take place in humans and certain other animals. Both Mitosis and Meiosis have both differences and similarities in the way they result in new cells with varying goals and slightly different outcomes. Some of the similarities between meiosis and mitosis are:

During both mitosis and meiosis, cells must duplicate their DNA and pull them apart into 2 sets and further place the sets on each end of itself and then divide down the middle part

Both meiosis and mitosis results in fresh new cells depending on the genes of their parent cells  

Thus, we can conclude that the statement that correctly describes how mitosis and meiosis are similar is “Sister chromatids segregate to opposite poles of the cell during both mitosis and meiosis”. Hence, option A is the correct answer.

A scientist performs a series of mutation screens to look for mutations that reduce ATP production. One of the mutants, compared to a wild-type cell, has reduced levels of ATP and NADH and increased levels of FAD and pyruvate. Which hypothesis best fits these observations?

Answers

The hypothesis that best fits the observation that one of the mutants has reduced levels of ATP and NADH and increased levels of FAD and pyruvate is that the mutation is disrupting the citric acid cycle (Option 3).

What is the citric acid cycle?

The citric acid cycle, also known as the Krebs cycle, is the second step of cellular respiration which is required to generate ATP through the oxidation of pyruvate.

The reduced form of Nicotinamide adenine dinucleotide (NADH) produced during the citric acid cycle is then used in oxidative phosphorylation (the third step of cellular respiration) in order to generate more ATP.

Therefore, with this data, we can see that the citric acid cycle generates the reduced form of Nicotinamide adenine dinucleotide (NADH) and thus increases the production of ATP, thereby a mutation in an enzyme that works in this pathway may also hamper the proportion of ATP.

Complete question:

A scientist performs a series of mutation screens to look for mutations that reduce ATP production. One of the mutants, compared to a wild-type cell, has reduced levels of ATP and NADH and increased levels of FAD and pyruvate. Which hypothesis best fits these observations?

The mutation is disrupting glycolysis.

The mutation is disrupting fermentation.

The mutation is disrupting the citric acid cycle.

The mutation is disrupting the electron transport chain.

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Answer:

For the people to lazy to read that. The answer is c.

Explanation:

ayuda por favor doy corona​

Answers

Answer:

Mr est un jeune individu provenant de

The diagram displays a box of normal DNA. The second box displays mutated DNA. Compare the mutated DNA with the normal DNA and identify the type of mutation that has occurred.

A) Substitution mutation.
B) Chromosomal mutation.
C) Deletion mutation
D) Frameshift mutation.

Answers

In my guess try A. hope I tried my best if I’m wrong I am sorry for answering not correctly
I think it’s the answer is A

Explain how pollution from one location
can affect the environment far away from the
source of the pollution

Answers

Answer:

Air quality is affected by natural processes. Wind can move pollutants from their source to far-away locations. It can still spread and harm living creatures and destroy their environments.

Explanation:

Air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

What is Pollution?

Pollution is defined as the introduction of harmful materials into the environment where the harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash which can also be created by human activity, such as waste or runoff produced by factories. Pollutants harm the quality of air, water and land.

Many things produce pollution such as cars spewing pollutants from their exhaust pipes. Burning coal to generate electricity pollutes the air. Industries and homes generate waste and sewage that can pollute land and water. Pesticides which is chemical poisons used to kill weeds and insects which is seep into waterways and harm wildlife.

Thus, air quality is affected by natural processes where wind can carry pollutants to places far away from their source which can still spread and harm living beings and destroy their environments.

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Which one of the following parasites affect all domestic animals?
A.Ticks. B. Mites
C. Tsetse fly D. Fleas​

Answers

Answer:

D fleas affect all animals

Answer:

D

Explanation:

FLEA THE NAME ORDER IS SIPHONAPTERA

autonomic reflexes enable the ans to control what kinds of visceral functions? check all that apply.

Answers

Given what we know about the Autonomic Nervous System we can confirm that autonomic reflexes enable the ANS to control functions such as heart rate, urination, and breathing rates.

These are among the many visceral functions that the Autonomic Nervous System controls. As per the pattern that is being established, we can conclude that the Autonomic Nervous System functions at a subconscious level, controlling the visceral functions that do not require conscious thought.

Despite this, some organs can also be controlled consciously, such as the lungs and bladder. Other visceral functions such as heart rate, digestion, and even ocular responses, are not able to be controlled consciously.

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Help meeeeeee lzzzzzz

Answers

Answer:

Wrong category

Explanation:

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