20. Which of the following bacteria is considered coliform?
A. E. coli
B. Proteus​​​​​​​​​​​​​​​​​​​​​​​​​​
C. Salmonella
D. Shigella
21. The Enterotube is used to distinguish between:
A. Staphylococcus and Streptococcus
B. Proteus and Salmonella
C. Bacteria and Fungi
D. Antibiotic-resistant bacteria

22. What type of specimen is used to inoculate an Enterotube?
A. Throat swab
B. Stool
C. Urine
D. Blood
E. Sputum

23. Which bacteria gives positive test for urease when growing on urea broth?
A. Proteus
B. Enterobacter​​​​​​​​​​​​​​​​​​​​​​​​​​
C. Salmonella
D. Shigella

24. Which bacteria gives positive test for decarboxylase when growing on lysine broth?
A. Proteus
B. Enterobacter​​​​​​​​​​​​​​​​​​​​​​​​​​
C. Salmonella
D. Shigella

25. The Lethal Effect of UV light is specifically caused by
A. UV –A
B. UV-B
C. UV-C
D. Infrared

Answers

Answer 1

Answer:

20. D

21.  A

22. c

23. C

24. not sure

25. not D

Explanation:

im not sure with all of them


Related Questions

Based on the information given, state ONE way the bag or its contents will have changed by the next day. Support your answer with an explanation. *

Answers

Answer:

The size of the bag will shrink due to movement of water molecules out of the bag into the beakerdue to osmosis.

Explanation:

The difference in concentration between two regions results in a phenomenon known as diffusion.

Diffusionnis the process by which molecules of a substance move from regions of higher concentration to regions of lower concentration until equilibrium concentration is reached by the two regions. Water molecules moves across regions of different concentration through a semipermeable membrane in a special form of diffusion known as osmosis.

Osmosis refers to the movement of water molecules from regions of high concentration (dilute solutions ) to regions of low concentration (concentrated solutions ) through a semipermeable membrane until equilibrium is attained.

The solution in the bag is less concentrated than the solution innthe beaker. The bag serves as a semipermeable membrane allowing water molecules to move out of it into the beaker due to the difference in concentration of the two solutions. As a result, the size of the bag shrinks while the level of the solution in the beaker rises as it becomes less concentrated.

Which of the following is not one of Mendel's Laws?
a) Law of Conservation of Mass
b) Law of Segregation
c) Law of Dominance
d) Law of Independent Assortment

Answers

Answer:

A

Explanation:

Law of conservation of mass was discovered by Lavoisier

Law of Conservation of Mass is not one of Mendel's Laws. Therefore, the correct option is A.

What are Mendel's Laws?

Gregor Mendel's research with pea plants in the 19th century led him to reveal three fundamental laws of inheritance, known as Mendel's laws. There are three laws:

1. Law of Segregation: Each individual has two alleles for each trait, and this law indicates that these alleles separate (separate) during the development of gametes, or reproductive cells. This indicates that only one allele per trait is present in each gamete.

2. According to the law of independent assortment, the inheritance of one trait is independent of the inheritance of another. In other words, the segregation of alleles for one trait is independent of the segregation of alleles for the other trait.

3. The law of dominance states that when two different alleles are present in an individual, the dominant allele will dominate the recessive allele in terms of expression. Only when both alleles are recessive will the recessive allele be expressed.

Therefore, the correct option is A.

Learn more about Mendel's laws, here:

https://brainly.com/question/30195848

#SPJ2

Which of the following is not a function of stems?
Group of answer choices

anchorage

structural support

photosynthesis

water transport

Answers

A) Anchorage
I'm not sure

please anyone help me​

Answers

Answer:

mutualism

hope it's right :)

boild water is it convection radiation cunduction or convection

Answers

Answer: I think it’s Convection.

Answer:

Convection

Explanation:

Convection occurs in fluid, which means liquid or gas.

It is not Conduction as conduction occurs in solid through direct contact.

It is not Radiation because radiation is heat transferring through waves.

How will photosynthesis and respiration keep you alive, and what do you need to do?

Answers

Explanation:

While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere. The exchange of carbon dioxide and oxygen during photosynthesis (Figure below) and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels. (hopefully this helps)

What do you understand by membrane potential?

Answers

Answer: It is the difference in the electrical potential across a membrane

Explanation:

Match the sensory characteristic with how it is coded by the nervous system. - Sensory modality - Location of the stimulus - Intensity of the stimulus - Duration of stimulus A. Which sensory neurons are activated B. Receptive fields C. Frequency of action potentials D. Duration of action potential train (i.e., continued firing of action potentials in sensory neurons) E. Size of action potential F. Duration of a single action potential

Answers

Answer:

a) Which sensory neurons are activated

b) Receptive fields

c) Frequency of the action potentials and size of action potential

d) Duration of action potential train and Duration of a single action potential

Explanation:

Sensory modality : The sensory modality is Which sensory neurons are activatedLocation of the stimulus : The location of the stimulus is in the Receptive fieldsIntensity of the stimulus : The Intensity of the stimulus represents the frequency of the action potentials and size of action potential Duration of stimulus : The duration of the stimulus is  Duration of action potential train and Duration of a single action potential

Who discovered that the planets revolved around the sun?
Copernicus
Lippershey
Gutenberg
da Vinci

Answers

Explanation:

it is COPERNICUS option A

Answer:

A

Explanation:

What other factors, besides distraction, might also decrease reaction times???? Good explanation…

Answers

Answer:

Lack of sleep.

Explanation:

Lack of sleep/tiredness is really bad for your reaction time.

The outer planets are also called the rock planets.

True
False

Answers

Answer:

false it is called gas giants or Jovian planets

Which statements about the phylogenetic tree are true? select all that apply?

Answers

Answer: The question is not complete, here is the completed part gotten from other website.

Mammals and turtles are more closely related than are lungfishes and sharks. Hagfishes, lungfishes, and frogs have lobed fins.

Lancelets and coelacanths are more closely related than are chimaeras and coelacanths.

Organism (a) is a common ancestor of all chordates.

Descendants of organism (d) have limbs with digits. birds and ray-finned fishes have a notochord and jaws.

rays and frogs have vertebrae. organism (c) is a common ancestor of lampreys and lungfishes?

The correct options are;

Mammals and turtles are more closely related than are lungfishes and sharks.

Descendants of organism (d) have legs.

Rays and frogs have a vertebral column.

-Birds and ray-finned fishes have a notochord and jaws

Explanation:

This is because phylogenetic tree is a branching diagram that entails different evolutionary relationships that occur between organisms or biological species having common decent or ancestors and showing similar and differences in their genetic characteristics or traits. It shows how species evolved from their ancestors.

Can someone help me fill them in that would be really helpful

Answers

Answer:

a - flower

b - ovule

c - fruit

d - embryo

e - seed

f - seedling

Explanation:

Hox Genes:

A cow born in Russia has two tails. Which of the following most likely was the cause of this abnormality?

Answers

Domestication and selective breeding has resulted in over 1000 extant cattle breeds. Many of these breeds do not excel in important traits but are adapted to local environments. These adaptations are a valuable source of genetic material for efforts to improve commercial breeds. As a step toward this goal we identified candidate regions to be under selection in genomes of nine Russian native cattle breeds adapted to survive in harsh climates. After comparing our data to other breeds of European and Asian origins we found known and novel candidate genes that could potentially be related to domestication, economically important traits and environmental adaptations in cattle.

i have a question for you guys

Answers

Answer:

B. the birthrate of lions increases

Explanation:

Stubborn 123 gfvbb dvhfcvg fb in a relationship and I just got to my work I just don’t know how

The pie chart shows us the annual diet of a typical black bear. The percentages are based on the approximate weight of the foods
eaten. How much more fish do bears eat compared to rodents?
A)
2x
B)
3x
10X
D)
30X

Answers

the answer is B: 3x because 15 is 3 times 5

Answer:

B) 3X

Explanation:

3X Bears eat 3X more fish than rodents. Bears eat 5% rodents and 15% fish. That is a 1:3 ratio of rodents to fish or 3X more fish.

Q2: What are the three classes of mutations? ​

Answers

There are three types of DNA Mutations: base substitutions, deletions and insertions.

Which describes gyres in the northern hemisphere?

Answers

Answer:

In the Northern Hemisphere, the gyres rotate to the right (clockwise), while in the Southern Hemisphere the gyres rotate to the left (counterclockwise). There are five major gyres in the oceans; the North Atlantic, South Atlantic, North Pacific, South Pacific, and Indian (Figure 9.1.

Explanation:

Many tree frog populations are threatened due to habitat loss. In an effort to promote conservation, tree frogs may be bred in captivity. A zoo acquired male and female tree frogs from two different populations. In the zoo, the tree frogs were able to successfully mate within their own population, but breeding attempts between the two populations were unsuccessful. Based on this information, which statement correctly describes the relationship between the two populations of tree frogs?
this is for biology test pleasee someone help​

Answers

Answer: Same Genus but different species

Explanation: took the test and came back

The statement which correctly describes the relationship between the two populations of tree frogs is same genus but different species.

What are the characteristics of genus?

A genus is a class or group of something. In biology, it's a taxonomic group covering more than one species. This is a term used by biologists to classify more than one species under a larger umbrella.

A species is defined as a group of organisms made up of similar individuals capable of interbreeding or exchanging genes. Genus: A genus is a taxonomic classification that includes closely related species.

Genus is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family.

Learn more about genus:

https://brainly.com/question/1886180

#SPJ6

GIVING 35 PTS AFTER U ANSWER IT MUST BE CORRECT A stalled front (not moving) that may bring many days of clouds and precipitation is a(n)____________.

Question 1 options:

cold front


warm front


occluded front


stationary front

Question 2 (1 point)
Saved


An air mass, shown in the image above, that forms over parts of Mexico, Texas, and Arizona will be a _______.

Question 2 options:

continental polar air mass


continental tropical air mass


maritime polar air mass


maritime tropical air mass

Question 3 (1 point)
Saved
Prevailing westerlies are global winds responsible for most weather in our region of the United States moving from west to east.

Question 3 options:
True
False
Question 4 (1 point)
What causes a land breeze at the beach?

Question 4 options:

At night, cooler air over land replaces rising warmer air over water.


At night cooler air over water replaces rising warmer air over land.


During the day, cooler air over land forces warmer air over water to rise.

Question 5 (1 point)


Based on the weather map above, which statement is true based on the weather map?

Question 5 options:

A warm front is moving toward South Carolina.


A warm front just passed through South Carolina.


It is currently raining in South Carolina.


The next few days in South Carolina should be colder.

Question 6 (1 point)
Saved


Which type of local wind is illustrated in the image above?

Question 6 options:

Global wind


warm wind


land breeze


sea breeze

Answers

it is a stationary front because the stationary fron does not move from one place.

What is NOT a function of the reticular formation?
a. sleep b. breathing c. memory d. pain transmission

Answers

Answer:

c. memory

Explanation:

Memory is not a function of the reticular formation. Sleeping, breathing, and pain transmission all are the functions of reticular formation. Thus, the correct option is C.

What is reticular formation?

Reticular formation is a part of the pons region of brain which controls the sleep-wake cycle and also filters stimuli to separate out relevant background stimuli from irrelevant ones.

Reticular formation is one of the phylogenetically earliest parts of the brain and it is crucial for controlling some fundamental processes such as sleeping, breathing, and pain transmission.

The reticular formation is an essential process for the numerous activities of the brainstem. It is located strategically amid the significant nuclei in the brain cells and the nerve fibers that traverse it. The reticular formation looks like an intricate web network.

Therefore, the correct option is C.

Learn more about Reticular formation here:

https://brainly.com/question/29461493

#SPJ2

process by which organisms with favorable variations survive and produce more offspring than well-adapted organisms

A. evolution
B. Natural Selection
C. Speciation

Answers

Answer:

B. Natural Selection

Explanation:

Any animal with the favorable qualities to survive is naturally able to produce more offspring than others. This is theory was first theorized by Charles Darwin with his Finch birds.

(P.S I don't know if thats the right kind of bird, but point is that it was a bird :D)

Hope this helps :)

HURRY DUE TODAY
The term for male and female reproductive structures found in separate flowers on the same plant is,
Group of answer choices

hermaphroditic

imperfect

monoecious

dioecious

Answers

Answer:

dioecious

Explanation:

The androecium is the sum of all the male reproductive organs, and the gynoecium is the sum of the female reproductive organs. If all four whorls are present, the flower is described as complete.

What is the function of the seed (fertilized egg)?

Q#21 on pic

Answers

Answer: Seeds serve several functions for the plants that produce them. Key among these functions are nourishment of the embryo, dispersal to a new location, and dormancy during unfavorable conditions.

Explanation: i hope this answers your question nd have a nice day or night

HIV is a

Multiple Choice

double-stranded DNA virus.
single-stranded RNA virus.
single-stranded DNA virus.
double-stranded RNA virus.
prion

Answers

Answer:

single strand RNA virus

Explanation:

HIV has pair of single strand of RNA

B. single stranded RNA virus

Explanation: HIV is a retrovirus, which means it carries single-stranded RNA as its genetic material rather than the double-stranded DNA human cells carry

The chemical subunits called ________________ acids are joined together to form proteins.

Answers

dehydration, amino acids, covalent, peptide

Is water wet? Also does the straw have two or one whole?

Answers

Answer:

water is wet to the touch, and a straw has two holes

water is not wet a straw has two holes

Identify In the Krebs cycle, what is pyruvate converted to?

Answers

Answer:

Breakdown of Pyruvate

After glycolysis, pyruvate is converted into acetyl CoA in order to enter the citric acid cycle.

Explanation:

Which of these places is an example of a freshwater ecosystem?

A. Lake
B. Coral reef
C. Rain forest
D. Desert

Answers

I think it’s the letter A

Answer:

Lakes (A)

Explanation:

I took the test

How would altering the ph of an ecosystem affect the organisms that live there? Relate to enzyme function.
In your response include why slight changes in pH are significant to living things.

Answers

Answer:

pH: Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.

Hope this helps and if this is wrong sorry!!!

Other Questions
A definition for habitat!!!!! what is the value of x? Part BWhich quotation supports the answer in Part 4? PLEASE HELP ITS URGENT DONT GUESS (also if you get it right ill mark you as brainliest) Write about a time that technology has helped you complete a taskPlease help me Andrea said that that some branded bikes like Brompton folding bike was _____ expensive for her.A. fairlyB. mildlyC. too D. very Explain how malware can be used in cyber warfare or a cyber terrorism attack on a country? What do animals that are carnivores eat?whatever they can findfish and insectsother animalsplants and fungus Jameson Middle School gives bottles of water to teachers and students who are going on a field trip. The school orders 500 bottles of water. They plan to give 35 bottles of water to teachers. They ordered at least 2 bottles of water for each student. How many students could be going on the field trip? Which of the following would have the MOST thermal energy cup of hot soupmug of warm coffeebowl of cold soupbathtub full of warm water "Where is Here?"What did you predict when you first saw the pictures, and the title of the story ?I give Brainliest! please help need answers ASAP! I will leave good reviews Kevin has a packet of 25 grams of sugar. How many milligrams of sugar does he have? A. 25,000 mg B. 27,500 mg C. 30,000 mg D. 50,000 mg please help me and before you try to answer the height is not 8 in but the volume is 25.12 in if that helps thank you WILL MARK BRAINLIST!! What makes italy famous? What moral values do u think a society should hold rolling two number dice and tossing one coin Which sentence accurately uses the homophones theyre, there, or their?Many of the students left there backpacks on the bus.Theyre going to come home as soon as the movie is over.I think I left the bags of groceries on the floor over their.These dogs bark at everyone, but there not dangerous at all. Give a synonym for the idiom "to call on"The word bogus means fictitious, false. What relationship might there be between this word and the protagonist of Parson's Pleasure? PLEASE HELP ASAP 2 : 6 : 7 = x : 36 : y