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blagie [28]
3 years ago
12

Heart problems often cause trouble breathing. which best explains this?

Biology
2 answers:
s2008m [1.1K]3 years ago
8 0

Answer:

b

Explanation:

aev [14]3 years ago
7 0

The lungs use the circulation caused by the heart.

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You do a serial dilution in the same manner as the one in the video. A plate with a sample volume of 10-6 mL produced 43 colonie
8090 [49]

Answer: 43 x 10^6  CFU.

Explanation:

Plate count is a method used to determine the number of viable microorganisms in a sample. When the bacterial concentration is high, serial dilutions are carried out in a 1:10 sequence. <u>Then, the dilutions are successive dilutions keeping the dilution factor constant at each step</u>. Small aliquots of these dilutions are seeded in medium contained in a Petri dish where the bacteria grow forming colonies. Then the plates are incubated and colonies develop both within the agar and on the surface.

If the concentration of the seeded aliquot is too high, the bacteria will grow too much and it will not be possible to distinguish the colonies. <u>However, if the concentration is very low, the number of colony forming units (CFU) may be very low and thus can be counted</u>.

Colony forming units are calculated:

CFU = Number of colonies / (volume seeded on the plate * dilution).

The dilution is 10^-6, the number of colonies counted is 43, and usually the volume plated is 0.1 mL, so we replace that in the equation:

CFU= 43 / (0.1 mL * 10^-6)

CFU= 43000000 = 43 x 10^6

8 0
3 years ago
The property of water that allows the basilisk lizard to run across its surface is.
Sindrei [870]

Answer:

High surface tension caused by the polar quantities of water.

6 0
1 year ago
Terangkan mengapa bilangan komosom berbeza pada sel anak antara mitosis dan meiosis.​(1 markah)
Alchen [17]

(hopefully this is what you need, I am using a translator)

/

(Saya harap ini yang anda perlukan. Saya menggunakan penterjemah.)

------------------------------------------------------------------

In mitosis, chromosomes separate only once. They line up end to end. This results in two identical, diploid cells. chromosomes failing to separate during meiosis, such as Patau syndrome, to the effects of chromosomes failing to separate during mitosis.

/

Dalam mitosis, kromosom terpisah hanya sekali. Mereka berbaris dari hujung ke hujung. Ini menghasilkan dua sel diploid yang serupa. kromosom gagal dipisahkan semasa meiosis, seperti sindrom Patau, dengan kesan kromosom gagal dipisahkan semasa mitosis.

:D

3 0
3 years ago
Which of following processes is the function of the smooth muscle layer of the digestive system? a) Ingestionb) Secretionc) Mixi
lakkis [162]

The answer is "none of the above".

The smooth muscle is responsible for movement of food by peristalsis and mechanical digestion by segmentation.

8 0
3 years ago
Read 2 more answers
A scientist hypothesizes that if the inner membrane of a mitochondrion were smooth instead of folded, less ATP would be produced
I am Lyosha [343]

Answer:

i think its bcz

ATP if formed by deeply folded membrane

So if the membrane is smooth instead of folded

it will affect the ATP production

<h2>Im not that sure with the answer</h2>
6 0
3 years ago
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