Bacterial strain A (met , his-, arg ) is mixed with bacterial strain B (met-, his , arg-), grown in complete media, then plated on minimal media supplemented with histidine. Bacteria grows on the plate, which indicates that ________.

Answers

Answer 1

Answer:

Plate has all the essential nutrients that is required by the bacteria.

Explanation:

Bacteria grows on the plate, which indicates that the plate has all the essential nutrients that is required by the bacteria. Bacteria needs a type of media for its growth which contains all the necessary items which plays a key role in its growth and development. This plate has a media that contains food which the bacteria use for its growth and development so that's why we can say that  plate has all the essential nutrients that is required by the bacteria.


Related Questions

A student is conducting their science experiment on the effect of caffeine on dogs. He has 3 groups of test subjects. The 1st group of dogs receives plain water. The 2nd group of dogs receives 10 mg of caffeine each, and the 3rd group receives 50 mg of caffeine each. He will measure their activity levels by recording how long each dog runs without stopping, after giving them the pills. What is the dependent variable in this experiment?

Answers

Answer:

The amount of activity  

Explanation:

In an experiment, the independent variable is the variable that the scientist/investigator purposely changes or manipulates, which isn't changed by other variables in the experiment (in this case, the amount of caffeine). On the other hand, the dependent variable is the variable that is being measured or tested during the experimental procedure (this variable is 'dependent' on the independent variable). Finally, the control group is defined as the group of individuals/subjects who do not receive the experimental treatment (in this case, the dogs that receive water).

Answer: The amount of activity.

Explanation:

What evidence would prevent scientists from classifying viruses as living organisms?

Answers

Viruses do not follow the properties of life. They can not reproduce, grow and do not go through homeostasis.

Answer:

The following evidences would prevent scientists from classifying viruses as living organisms:

1) They have subcellular or acellular (non-cellular) structure.

2) Do not respire or excrete.

3) Can be crystallized.

4) Can be stored as chemicals.

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Hope this helped!

~AH1807Peace!

When making observations, you should provide a general description of the subject, rather than going into too much detail.

Answers

Answer:

yeah thats correct

Explanation:

is there any question?

that is true but also make sure you aren’t too broad. you want to be mildly specific but not to detail heavy

explain what perlemoen are?​

Answers

Answer:

Also known as "abalone" which is a

Explanation:

Answer:

any of various edible marine gastropod mollusks of the genus Haliotis

Explanation:

hope this helps

A woman who is a carrier for #1 hemophilia and a man that does not have the
condition have children. What is the probability that they will have a child
with the condition being studied? What is the gender of that child?


#2 In plants, inflated pea pods are dominant to constricted pea pods. Two pea pods both heterozygous for pod shape are crossed. What is the probability that they could produce constricted pea pods ?


#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

Answers

Answer:

Explanation:

A woman who is a carrier for #1 hemophilia and a man that does not have the condition have children. What is the probability that they will have a child with the condition being studied? What is the gender of that child?

if the baby gets the Y chromosome from the father it will be a boy. If the boy gets his mother's X chromosome with the hemophilia gene he will have hemophilia. If he inherits his mother's other X chromosome, he will have normal blood clotting. If the baby gets the X chromosome from the father it will be a girl.

#4 A woman that is heterozygous for type A blood and a man that is heterozygous for type B blood have children. What are the possible blood types of their children?

One parent with A and another with B can produce a child with A, B, AB or O blood types.

#5 Two people are both unknowingly carriers for the cystic fibrosis gene. What is the probability that they will have children with cystic fibrosis?

If both parents are carriers there is a 1 in 4 (25 percent) chance that both will pass on the non-functioning gene, which would result in a pregnancy affected with cystic fibrosis.

#3 A woman that is heterozygous for Huntington's disease and a man that does not have the condition have children . What is the probability that their children inherit the Huntington's gene ?

Huntington's disease (HD) is what is called a dominant genetic disease. What this usually means is that a child only has a chance of getting a disease like this if a parent has it too. But parents without HD can have a child with HD. This is true of any dominant genetic disease

Which allows materials to enter and exit the nucleus?


pore

nucleolus

chromatin

cell wall

Answers

Answer:

a pore allows materials to enter and exit the nucleus

Nuclear pores allow materials to enter and exit the nucleus.

What is the reason for having diverse functions for proteins

Answers

Answer:

to make the body strong

Methylation _________of the transcriptional unit results in a __________reduction in luciferase expression, whereas methylation ________the unit causes a ________reduction in expression. The effect of methylation of the transcriptional unit may be_________ by methylation outside the unit.
A. enhanced
B. within
c. reduced
d. drastic small outside

Answers

Answer:mình nghĩ là D

Explanation:

I want to know full answer about ecoregion vs. ecosystem.

Answers

Answer:

An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of natural communities and species. The biodiversity of flora, fauna and ecosystems that characterise an ecoregion tends to be distinct from that of other ecoregions. In theory, biodiversity or conservation ecoregions are relatively large areas of land or water where the probability of encountering different species and communities at any given point remains relatively constant, within an acceptable range of variation (largely undefined at this point).

A map of the Amazon rainforest ecoregions. The yellow line encloses the ecoregions per the World Wide Fund for Nature.

A map of North America's bioregions

Three caveats are appropriate for all bio-geographic mapping approaches. Firstly, no single bio-geographic framework is optimal for all taxa. Ecoregions reflect the best compromise for as many taxa as possible. Secondly, ecoregion boundaries rarely form abrupt edges; rather, ecotones and mosaic habitats bound them. Thirdly, most ecoregions contain habitats that differ from their assigned biome. Biogeographic provinces may originate due to various barriers, including physical (plate tectonics, topographic highs), climatic (latitudinal variation, seasonal range) and ocean chemical related (salinity, oxygen levels).

HELP ASAP PLEASE HELP FAST

Answers

I DONT HAVE THE ANSWER BUT GOOD LUCK

The gas form of water is ____________.

Answers

The gas form of water is water vapor.

Answer:

Water vapor

Explanation:

Hope this is helpful.

What type of factors would have the
greatest influence on a densely
populated area?
A. drought
B. density-dependent factors
C. density-independent factors

Answers

Answer:

c

Explanation:

because in populated areas people are independent

Match each term with the best description.

a. Membrane-bound structure that supports energy production.
b. Semi-permeable, living covering of the cell.
c. Long, whip-like appendage used for locomotion.
d. Membrane-bound structure containing the hereditary material of the cell.
e. Gel-like substance encompassing the contents of the cell
f. Basic structural and functional unit of living orgaisms

1. Cell
2. Cell membrane
3. Cytoplasm
4. Flagellum
5. Mitochondrion
6. Nucleus

Answers

Answer:

a) 5. mitochondrion

b) 2. cell membrane

c) 4. flagellum

d) 6. nucleus

e) 3. cytoplasm

f) 1. cell

Which development would most reflect Karl Marx's belief in the economic
system that he predicted would replace free markets?
A. Governments eliminate all taxes on wealthy corporations.
B. Workers share all the profits generated from a factory.
C. Companies begin to sell their products in overseas markets.
D. Businesses refuse to hire workers who demand high wages.


Answers

Answer:

D. Businesses refuse to hire workers who demand high wages

Explanation:

Karl Marx's predicted that if businesses refuse to hire workers with high wages according to their value, this can lead to revolution and can destroy or replace the free markets.

DNA is referred to as a_____,
meaning that it has_______
strands that are______together.

Answers

DNA is referred to as a double helix, meaning that is has two strands that are held together.

Answer:

double helix

two

wound

Explanation:

DNA is referred to as double helix, meaning it has two strands that are wound together.

plz give a correct answer for the question how do canine and molar differ​

Answers

Answer:

Canines are the sharp, pointed teeth that sit next to the incisors and look like fangs. Dentists also call them cuspids or eyeteeth. Canines are the longest of all the teeth, and people use them to tear food

Molars are the flat teeth at the rear of the mouth. Each molar typically has four or five cusps. They are used exclusively for crushing and grinding. Wisdom teeth are also called third molars. They erupt from the age of 18 onwards but are often surgically removed.Their function is similar to that of the premolars, to grind, tear, and crush food. Molars have a large flat biting surface which makes them perfect for this job.

Explanation:

Hope it works!!!!

Canine are used to tear and found in front of mortal
Mortal are used to chew

an apple and a glass of milk can give you more nutrition as compared to the milk shake
Prepared from apple and milk. Justify it based on the physiology of GIT.

in detail plz

Answers

Answer:

True

Explanation:

because the milk shake is with cold but milk is hot

Which of the following describes a parasite
1 a bear that kills and eats fish?
2 a worm that lives inside a bear.
3 a dish that is killed and eaten.
4 a bear that has worms in its gut

Answers

Answer:

2

Explanation:

A parasite is an organism that feeds on the intestine of living organiy

The correct answer would be a worm that lives inside a bear! A parasite is something that lives inside a host and is receiving its food from the host — this being the bear! Safe learning :)

Which unit in the metric system is used to measure the mass of a boulder?

Answers

Answer:

Cubic feet

Explanation:

In crude oil affect eggs and larvae of fish and increase mortality.
O a.
Hydrocarbon
O b.
PAH
O c.
liquid petroleum

Answers

Answer:

its c liquid petroleum 100% surr

Jeremiah is an 10-year-old male who is short in stature. His parents have become concerned as Jeremiah is now wetting the bed, drinking a lot of water, and often appears tired/fatigued. The doctor orders several blood tests after Jeremiah's urine test was positive for glucose and ketones.1. What disease(s) should be ruled out in this patient?2. List the tests that are used to diagnose diabetes.3. List the symptoms of diabetes.

Answers

Answer: 2) Tests used to diagnoses diabetes: Oral Glucose Tolerance Test, Fasting Glucose Test, Hemaglobin A1c, Random Blood Suger Test.

3) unexplained weight loss, frequent unination, lethargic, excessive thirst, nausea , and vomititng, increased hunger even though is still eating, blurry vision, bed-wetting in childern who did not do it previously, dry mouth,

Explanation:

According to cell theory, all new cells...
A. must share DNA with existing cells.
B. must eat.
C. come from other cells.

Answers

Answer:

с

Explanation:

all new cells come from other cells

Mountain ranges are created at boundaries between tectonic plates a. b. transform transflux divergent convergent C. d. 5​

Answers

Convergent would produce mountains because they approach eachother

Sperm cells are not normally exposed to blood, but if they are, the immune system may produce ____________ against sperm cells' ____________ and render someone sterile.

Answers

Answer:

Sperm cells are not normally exposed to blood, but if they are, the immune system may produce __auto-antibodies__ against sperm cells' __auto-antigens_ and render someone sterile.

Explanation:

Auto-antibodies are antibodies that can destroy cells from the same organism. They are mistakenly directed against organs or tissues of the same organisms, causing auto-immune diseases or affections. The autoantibodies action occurs when the organism fails in recognizing its own cells and faces them as strange elements.

Auto-antigen is the molecule produces by the body that fails in being recognized due to a break up in the tolerance mechanisms, triggering an immune response.

In the exposed example, sperm cells do not usually mix with blood. So when they do, blood cells recognize them as strange bodies and act against them. Sterility might be an effect of this auto-immune response.

Help ASAP PLEASE HELP FAST

Answers

Answer:

I THINK ITS A) ACTIVE TRANSPORT REQUIRES ENERGY

I HOPE ITS RIGHT IF NOT THEN SORRY HAVE A GREAT DAY :)

Answer:

Active transport differs from passive transport in that active transport requires energy

sinanthropus pekinenis was victim of cannibalism

Answers

yes he was he was a victim on cannibalism

Looking in the rain forest pictures, how would you begin to classify the pants in the scene?

Answers

Answer:

I'm kinda confused can you help me understand it better please

More than two thirds of the world's plant species are found in the tropical rainforests: plants that provide shelter and food for rainforest animals as well as taking part in the gas exchanges which provide much of the world's oxygen supply.

Rainforest plants live in a warm humid environment that allows an enormous variation rare in more temperate climates: some like the orchids have beautiful flowers adapted to attract the profusion of forest insects.

Competition at ground level for light and food has lead to evolution of plants which live on the branches of other plants, or even strangle large trees to fight for survival.

The aerial plants often gather nourishment from the air itself using so-called 'air roots';. The humidity of the rainforest encourages such adaptations which would be impossible in most temperate forests with their much drier conditions.

The meal Valerie is planning to eat at dinner has total 800 Calories. If 55% calories come from carbohydrate, 20% from fat and 25% from proteins, calculate the amount of carbohydrates, fats, and proteins (in grams) in the meal.

Answers

Answer:

Carbohydrate = 57.023g

Fats = 20.736g

Proteins = 25.919g

Explanation:

According to this question, Valerie is planning to eat at dinner meal that has a total of 800 Calories.

- 55% calories come from carbohydrate i.e. 55/100 × 800 = 440 calories

- 20% calories come from fat i.e. 20/100 × 800 = 160 calories

- 25% calories come from proteins i.e. 25/100 × 800 = 200 calories

Since 7.716 calories = 1g

1. Amount of carbohydrates in gram = 440/7.716 = 57.023g

2. Amount of fats in gram = 160/7.716 = 20.736g

3. Amount of proteins in gram = 200/7.716 = 25.919g

HELP ASAP NEED HELPPPPP

Answers

Answer:

insects is a write answer.

please helpppppppppp

Identify the variables in this hypothesis.


If Sam increases his exposure to excessive noise by listening to music through his headphones, then his ability to hear will decrease. This is because when sounds are too loud, they can damage sensitive structures in the inner ear and cause hearing loss.


The independent variable is

.


The dependent variable is

.

Answers

Answer:

The independent variable is excessive noice exposure

The dependent variable is hearing

Explanation:

sorry for you having to wait so long have a mildly amazing day like me lol

Answer:

The independent variable is  : Excessive noise exporsure

The dependent variable is : hearing

Explanation:

I gotchu fam :D

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