Why is it that although Nocardia spp. grow well on most common nonselective laboratory media, many are missed when the cultures are read

Answers

Answer 1

Answer:

These organisms require 3 to 6 days to grow.

Explanation:

Nocardia are a group of actinomycetes. Some of the species of the nocardia are pathogenic to the humans. There are more than 70 species of nocardia in the world.

Some of the Nocardia spp. grow on the most common non laboratory media but many of them are missed out when the cultures are read because these organisms requires at least 3 days to 6 days to grow.


Related Questions

Which order shows the levels of organization from smallest to largest?
cell -
organ
-
tissue
organ system
-
organism
-
cell tissue > organ – organ system organism
cell organ system organ-
tissue -> organism
O cell organ → organ system - tissue organism

Answers

Answer:

The order to show the smallest out largest is: Cell - Tissue - Organ -  Organ system - Organism.

Explanation: Organelle are subcellular structures that preform functions in the cell. AND ARE NOT ORGANS.  

Which type of seismic wave is recorded by a sesimoraged first during an earthquake ?

Answers

There are two broad classes of seismic waves: body waves and surface waves. Body waves travel within the body of Earth. They include P, or primary, waves and S, or secondary, waves. P waves cause the ground to compress and expand, that is, to move back and forth, in the direction of travel.

What m-RNA strand would be formed from the DNA strand below?

T G A C G T A
A C T G C A T

Answers

Answer:

A C U G C A U U G A C G U A

Explanation:

because Adenine always pairs with Uracil and guanine with cytosine. you can also remember it as Apple Tree and Car Garage.

Weathering and erosion are largely responsible for determining ___________.
A. the pattern of wind currents
B. the shapes and features of landforms
C. the height of mountains
D. the color of rocks and stones
Hurry!!

Answers

Answer:

B

Explanation:

it cause changes to shape size and texture of different landforms

Answer:

Correct answer is B

because erosion and weathering change the shape of the landforms

HAVE A NİCE DAY

Explanation:

greetings from Turkey ツ

Carbon dioxide molecules cannot cling to water molecules.
True
False

Answers

Answer:

False

Explanation:

because water molecules are polar and carbon dioxide molecules are nonpolar. Water molecules have a weaker attraction than carbon dioxide molecules.

Which of the following characteristics must an object possess in order to be considered alive? Select all that apply

Answers

Explanation:

responds to the environment.

It grows and develops.

It produces offspring.

It maintains homeostasis.

It has complex chemistry.

It consists of cells.

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Which weathering process involves physical forces but not chemical
reactions or dissolving of minerals?

Answers

Answer:

Mechanical weathering, also called physical weathering, breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition.

Explanation:

GIVE BRAINLIST

Lisa is giving a speech about Pandas. Her speech includes 3 points: 1) where pandas live; 2) what pandas eat; and three) how pandas reproduce. What type of organization is Lisa using?

Answers

Answer:

Topical order.

Explanation:

Text structure can be defined as words used to describe how a writer or an author organizes his or her words in a literary work.

A topical order refers to a way of structuring a text or organizing a speech based on the main topic and dividing it into several subtopics in logical categories (steps).

In this scenario, Lisa is giving a speech about Pandas. Her speech includes 3 points:

1) Where pandas live.

2) What pandas eat.

3) How pandas reproduce.

Thus, the type of organization Lisa is using is topical.

In conclusion, a speech or text organized in a topical order has its main points organized as subtopics which are well related with the main topic.

Protein digestion begins in the ________; fat digestion begins in the ________. Stomach; small intestine Mouth; stomach Esophagus; stomach Small intestine; small intestine Small intestine; large intestine

Answers

Answer:

Protein digestion begins in the mouth

Fat digestion begins in the stomach

Once a protein supply reaches your stomach, hydrochloric acid and enzymes referred to as proteases spoil it down into smaller chains of amino acids. Amino acids are joined collectively through peptides, that are damaged through proteases.

Fat digestion starts offevolved withinside the stomach. Some of the byproducts of fats digestion may be immediately absorbed withinside the stomach. When the fats enters the small intestine, the gallbladder and pancreas secrete materials to in addition spoil down the fats.

What is digestion?

The approaches of digestion encompass six activities: ingestion, propulsion, mechanical or bodily digestion, chemical digestion, absorption, and defecation. The first of those approaches, ingestion, refers back to the access of meals into the alimentary canal thru the mouth.

Thus it is well explained.

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The landscape of the Amazon rain forest has become more fragmented over the past half century. Thus, we would say that its _______ has changed.

Answers

Answer:

Structure.

Explanation:

It has changed its structure. Structure is the correct answer.

choose the correct option :-

Q: Who is known as father of Zoology

A) Darwin
B) Aristotle
C) Lamark
D) Theophrastus

Q: The corner of the cells of collenchyma tissue in plant are thickened due to deposition of _____

A) Lignin and suberin
B) Suberin and cutin
C) Cellulose and pectin
D) Chitin and lignin

Answers

Answer:

Q1.

B) Aristotle

Q2.

C) Cellulose and pectin

Answer:

Q:

Aristotle

Q:

cellulose and pectin

At each ______ foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the ______.

Answers

Answer:

At each intervertebral foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the spinal nerves.

Explanation:

The dura mater is the outermost meninge. It is around the spinal cord and the brain, and it protects these organs.  In the spine, the dura mater extends between the intervertebral foramen. The intervertebral foramina are the areas between each vertebra that have spinal nerve projections. In these areas, the dura mater extends to seclude the space where the spinal cord is since it fusses with the tissue that is around each spinal nerve to stop the entrance of any pathogen to the spinal canal, which is the space that contains the spinal cord.

please answer this:)​

Answers

May to October octuder to Dedembera

What is meant by "lowering the
activation energy" ?
A. Less energy is required to start the reaction
B. Less energy is released by the reaction
C. Less energy is absorbed by the reaction


Links and random answers will be reported

Answers

Answer:

a

Explanation:

activation is the start

Answer:

a

Explanation:

Asexual reproduction differs from sexual reproduction in that Group of answer choices asexual reproduction utilizes DNA from two parents to code for traits in offspring. asexual reproduction occurs only in plants. asexual reproduction produces offspring containing DNA from only one parent. asexual reproduction only occurs in animals. asexual reproduction produces genetically diverse offspring.

Answers

Answer:

Asexual reproduction produces offspring containing DNA from only one parent.

Explanation:

Asexual reproduction produces offspring containing DNA from only one parent because in asexual reproduction, the organisms born or produced from a single parent. The offspring is identical to their parent and this process of asexual reproduction occurs in both plants and animals. Asexual reproduction produces identical not genetically diverse offspring in the end of the process.

Answer:

Because asexual reproduction results in the birth or creation of organisms from a single parent, the children created have DNA from just one parent. Both plants and animals can reproduce asexually, and the progeny are identical to their parents. Asexual reproduction ultimately results in identical, not genetically different, offspring.

Explanation:

edg 2022

What type of microscope most likely produced the image of a mitochondrion?

Answers

Answer:

Mitochondria are visible under the light microscope although little detail can be seen. Transmission electron microscopy (left) shows the complex internal membrane structure of mitochondria, and electron tomography (right) gives a three-dimensional view.

Explanation:

For young men of age 20, there have been 150 rounds of DNA replication during sperm production as compared to only 23 rounds for a woman of age 20. That is a 6.5-fold greater number of cell divisions and proportionately greater opportunity for new point mutations. Yet, on average, 20-year-old men contribute only about twice as many new point mutations to their offspring as do women. How can you explain this discrepancy

Answers

Answer:

A plausible hypothesis is that deleterious germline mutations in sperm cells are removed by natural selection since sperms have to compete to fertilize the egg

Explanation:

Sperm cells need to travel through the cervix in order to reach the uterus and fertilize the egg. During this process (which is called 'fertilization'), approximately 300 million sperm cells have to compete in a race to reach an egg. During fertilization, the majority of sperm cells die off quickly because male germinal cells carry mutations that lead to abnormalities (e.g., many sperms have double heads, others no tail, etc). The sperm cells are considered to be physiologically weak because their normal functions can be easily disrupted by mutations and, simultaneously, they are under strong selective pressure to be selected during the sperm race. In consequence, deleterious germline male mutations are expected to be eliminated by natural selection, thereby sperms are selected before fertilization so only the strongest ones can compete in the race to fuse with the egg cell and thus develop one zygote.

Which is not an affect of testosterone in males?
A.Increase muscle mass
B.Change the voice to a higher pitch
C.The thickness and distribution of hair follicles on the body and head
D.Sperm production

Answers

Answer:

the answer is c

Explanation:

not much else to explain

The Answer is c hope it helps

Chapter 1: Cells Exercise Multiple Choice Question 1. A cell has mitochondria, centrosome with centrioles, nucleus and other cell organelles. Based on this information, this cell could be a cell of A, an apple. B. a yeast. Co a cat. D. a flower​

Answers

Answer:

C. a cat

Explanation:

only animals have centrosomes.

hope this helps!

The function of thick mucus in the stomach is to Group of answer choices promote fat digestion. activate stomach enzymes. protect stomach cells from acid and enzymes. keep the stomach bacteria-free.

Answers

Answer:

protect stomach cells from acid and enzymes.

Explanation:

This prevents peptic ulcers.

Which do all cells need in order to function?
oxygen
watercarbon dioxide
offspring?

Answers

Answer:

oxygen for animals

plants cells need water and CO2

When Adenosine Triphosphate is used, it breaks down into:
A. Glucose
B. It doesn't break down
C. Thymine Triphosphate
D. Adenosine Diphosphate

Answers

Answer:

D. Adenosine DIPHOSPHATE

Explanation:

ATP is hydrolysed to ADP in the reaction ATP+H20->ADP +Pi + energy

When Adenosine Triphosphate is used, it breaks down into Adenosine Diphosphate.

Adenosine diphosphate (ADP)

Adenosine diphosphate (ADP), also known as adenosine pyrophosphate (APP), is an important organic compound in metabolism and is essential to the flow of energy in living cells. ADP consists of three important structural components: a sugar backbone attached to adenine and two phosphate groups bonded to the 5 carbon atoms of ribose. The diphosphate group of ADP is attached to the 5’ carbon of the sugar backbone, while the adenine attaches to the 1’ carbon.

ADP can be interconverted to adenosine triphosphate (ATP) and adenosine monophosphate (AMP). ATP contains one more phosphate group than does ADP. AMP contains one fewer phosphate group. Energy transfer used by all living things is a result of the dephosphorylation of ATP by enzymes known as ATPases. The cleavage of a phosphate group from ATP results in the coupling of energy to metabolic reactions and is a by-product of ADP.ATP is continually reformed from lower-energy species ADP and AMP. The biosynthesis of ATP is achieved throughout processes such as substrate-level phosphorylation, oxidative phosphorylation, and photophosphorylation, all of which facilitate the addition of a phosphate group to ADP.

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A student combined equal amounts of two solutions. One solution had a pH of 2 and the other had a pH of 12. Which would most likely be the resulting pH?

Answers

Answer:

This question lacks options, the options are:

A. 1

B. 3

C. 6

D. 11

The answer is C. 6

Explanation:

pH of a solution refers to the concentration of hydrogen ions in that solution. A scale is used to measure pH of a solution.

* A pH value less than (<) 7 is said to be ACIDIC. The lesser the number, the more acidic

* A pH value of exactly 7 is said to be NEUTRAL

* A pH value above (>) 7 is said to be BASIC OR ALKALINE. The higher the number, the more alkaline.

According to this question, two solutions of equal volume with pH values of 2 and 12 respectively were combined. Based on the explanation of pH scale, the solution with pH 2 is said to be very ACIDIC while the solution with pH 12 is said to be very ALKALINE.

Hence, if this two solutions are combined, a neutralization will occur which will result to a solution with close to neutral pH (7). In the above options, 6 is the closest pH value to NEUTRAL and hence, the most likely pH of the resulting solution.

Answer:

6

Explanation:

edge 2022

Are there any parts of the human body that get oxygen directly from the air and not from the blood?
A. Yes
B. No
C. Neither​

Answers

Answer:

yes

Explanation:

your lungs

Answer:

Yes because the cornea in your eye takes oxygen directly from the air, not from your blood.

The outer planets are made mostly of gas which makes them

Answers

Answer:

The four outer planets are all gas giants made primarily of hydrogen and helium. They have thick gaseous outer layers and liquid interiors. The outer planets have numerous moons, as well as planetary rings.

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During pulmonary ventilation, relaxation of the diaphragm and external intercostals ________ and air flows out of the lungs. increases the pressure in the thoracic cavity flattens the floor of the thoracic cavity increases the volume of the thoracic cavity expands the rib cage stimulates the phrenic nerve

Answers

Answer:

Increases the pressure in the thoracic cavity

Explanation:

During pulmonary ventilation, relaxation of the diaphragm and external intercostals increases the pressure in the thoracic cavity and air flows out of the lungs.

Pulmonary ventilation involves the exchange of air in the body. The exchange mainly takes place between the lungs and the the blood. When the lungs take in oxygen it distributes it to other parts of the body after which the byproduct is expelled in the form of Carbon dioxide.

The diaphragm and intercostal muscles are found close to the chest(thoracic) region such that when air is expelled it produces a similar effect such as relaxation of the diaphragm which also makes the chest muscles go down and exert pressure. This mechanism aids the expulsion of Carbon dioxide from the lungs.

Microorganisms are classified as bacteria, fungi, protozoa and algae. Viruses are
not explicitly categorized as microorganisms. Give reason.

Answers

Answer:

Yes

Explanation:

Because they have both living and non living characteristics so it is hard to classify them as they posses living characteristics as reproduction and others when inside the host and posses non living characteristics when outside the host

In microorganisms micro means small and organism means living ones, so those living ones which are not seen without the help of a microscope, are microorganism.

What are viruses?

Viruses are obligate parasites and are very small in size. Viruses cannot live outside the host cells as they require host cell gene expression machinery to divide and perform metabolic reactions. Viruses remain inactive in the environment until found the host cells.

As viruses cannot qualify the criteria of living beings because they cannot survive separately in the evnironment,  that's why cannot be considered living organisms.

Mostly microorganisms are single-celled organisms like bacteria, fungi, and protozoa. Viruses are not considered microorganisms because they are nonliving outside the host body.

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To provide energy for the work that cells do, all cells need____

Answers

all living cells need oxygen

Write two sentences or clues, one for each word, that will help you remember the difference between actin and myosin. (Example: Actin is actively pulled)?

Answers

Answer:

The correct answer is -

Actin produces thin contractile filaments within muscle cells,

Myosin produces the dense contractile filaments within muscle cells

Explanation:

Actin is a globular protein that makes actin filaments by arranging in the long spiral chain or produces thin contractile filaments within muscle cells. It is found in cell cytoplasm as well as in the nucleus in eukaryotic cells.

Myosin is a motor protein that produces the dense contractile filaments within muscle cells and plays role in generating movement and force from chemical energy.

If the first base in the sequence below were mutated to a C, what would that do to the amino acid sequence?
A U G G C G G A A
Methionine, Alanine, Glutamic Acid

Answers

Answer:

it would be Leucine , Alanine , Glutamic Acid

Explanation:

enjoy your day :)

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