The half-life of protactinium-226 is 2 minutes if you started with 20 grams of pa-226 how much do you have after 8 minutes

Electron carrier molecules transfer electrons between metabolic pathways. Choose the electron carriers that transfer electrons f

denis23 [38]

Answer:

from glycolysis to electron transport.-glycolytic pathway

NADH and FADH2 are the major electron carrier from glycolysis through the Kreb Cycle to the electron transport chain.

Note-NADH alone transports electron from glycolysis to the Kreb Cycle. while both NADH and FADH2 transport electrons from the kreb'cycle to the electron transport chain.

from citric ac id cycle to the electron transport chain.

as explained above both NADH and FADH2.

The electrons are in the hydrogen atoms, carried by these co-enzymes. When they reached the matrix, the hydrogen atoms are split into protons and electrons(p and e-). it is these electrons that form gradients which are transported as chains in the matrix. The gradients of the electron generated PMF for pumping Hydrogen atoms into the intramembrane of mitochondrial

Note.

Nicotinamide Adenine Di nucleotide Hydrogen(NADH)

Flavin Adenine Dinucleotide Hydrogen(FADH)

Explanation:

5 0

2 years ago

Your friend, Raul, has just bought a school organizer and doesn’t understand why there are three different types of calendars in

DiKsa [7]

The term calendar is for the whole term in school. What classes you would take, where they are at, what you're doing in each class throughout the term. The weekly schedule will be used for what assignments need to be turned into each class that week. The daily organizer will be what you're doing in each class that day. What you will be taking about what assignments you will be doing. It will also be for what classes you will be going through that day.

8 0

2 years ago

Read 2 more answers

Pseudomonas sp. has a mass doubling time of 2.4 h when grown on acetate. The saturation constant using this substrate is 1.3 g/l

erastova [34]

Answer:

a) Cell concentration when the dilution rate is one-half of the maximum is 0.598g cell/L

b) the substrate concentration when the dilution rate is 0.8 $D_{max}$ is 5.2g/l

c) the maximum dilution rate is : 0.41 h⁻¹

d) the cell productivity at 0.8 $D_{max}$ is 2.40g cell/L

Explanation:

Given data :

Mass doubling time of Pseudomonas sp. = 2.4 hr

Saturation constant = 1.3 g/L

Cell yield on acetate = 0.46g cell/g acetate

We are to find;

a. Cell concentration when the dilution rate is one-half of the maximum.

Here, cell yield =amount of cell produced / amount of substrate consumed.

[S] at 0.5D max is determined using the Monod's equation.

Using the formula :

$D = \frac {D_{max}[S] }{ks+[S]}$

, where D is the dilution rate,

[S] is substrate concentration; &

Ks is the saturation constant.

By replacing the values, we get :

$0.5 = \frac{S}{1.3+[S]}$

$\\\0.65=0.5[S]$

[S]=1.3g/L

The cell concentration at 0.5Dmax= cell yield x substrate consumed at 0.5Dmax.

=0.46×1.3

= 0.598g cell/L

b)

Substrate concentration when the dilution rate is 0.8 $D_{max}$ is calculated as:

$D = \frac {D_{max}[S] }{ks+[S]}$

0.8=[S]/1.3+[S]

1.04+0.8[S]=[S]

[S]= 5.2g/L

Therefore , the substrate concentration when the dilution rate is 0.8 $D_{max}$ is 5.2g/l

c)

Maximum dilution rate is calculated using the expression $D_{max} = \frac{1}{time}$

=1/2.4

=0.41 h⁻¹

So, the maximum dilution rate is : 0.41 h⁻¹

d)

The cell productivity at 0.8 $D_{max}$ can be calculated by multiplying the amount of the cell yield with the amount of the substrate consumed at 0.8 $D_{max}$

Cell yield = $\frac {cell \ productivity \ at \ 0.8Dmax}{amount \ of \ substrate\ consumed \at\ 0.8 \D_{max}}$

Cell productivity at 0.8 $D_{max}$ = 0.46 × 5.2

=2.40g cell/L

Therefore, the cell productivity at 0.8 $D_{max}$ is 2.40g cell/L

5 0

2 years ago

Match each phylum or class to its correct characteristic.

Elis [28]

Answer:

Which quotations from "The Crab That Played with the Sea" convey a comic tone? Select two options.

"O my Best Beloved"

"He took the Elephant—All-the-Elephant-there-was—and said, 'Play at being an Elephant.'"

"All-the-Cow-there-was . . . licked her tongue round a whole forest at a time."

"The great Sea . . . overflowed all the dark forests for miles and miles, and flooded the Man’s house."

"By and by the Eldest Magician met the Man on the banks of the Perak river."

Explanation:

sp yes

5 0

2 years ago

List two pieces of evidence from the film justifying the claim that “termite mounds are an advantage to the savanna ecosystem.”

Lunna [17]

Answer:

Termites can spend time building mounds there by aerating the soil and allowing moisture which support the growth of shrubs, grasses, tress.

Through their mounds, their droppings contain phosphorus and nitrogen which add to the soil nutrients and supports grasses, shrubs and trees growth.

Explanation:

Termites are commonly found in Savannah ecosystem in African areas and they build mounds. Termites mounds consist of their fecal droppings , saliva and clay.

Termites can spend time building mounds there by aerating the soil and allowing moisture which support the growth of shrubs, grasses, tress.

Through their mounds, their droppings contain phosphorus and nitrogen which add to the soil nutrients and supports grasses, shrubs and trees growth.

3 0

2 years ago