Which of the following characteristics do all unicellular organisms share?

1 answer:

3 0

Unicellular organisms...

Contain a single cell in their body

Do not contain membrane bound organelles

Use simple diffusion as a transport mechanism

All cellular processes are carried out by the single cell

Only visible under the microscope

Injury in the cell leads to the death of the organism

Asexually reproduce by binary fission

Sexually reproduce by conjugation

Lifespan is comparatively short

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The enzyme, carbonic anhydrase, is a large zinc-containing protein with a molar mass of 3.00 x10^4 g/mol. Zn is 0.218% by mass o

tia_tia [17]

The mathematical expression for mass percent is given by:

$Mass percent = \frac{mass of the compound}{molar mass of the compound}\times 100$

Put the values,

$0.218 percent of zinc = \frac{mass of zinc}{3.00 \times 10^{4} g/mol}\times 100$

mass of zinc = $0.218 \times (3\times 100) g$

= $0.654 \times 100 g$ or 65.4 g

Now, number of moles of zinc = $\frac{given mass in g}{molar mass of zinc}$

= $\frac{65.4 g}{65.38 g/mol}$

= 1.00 mole

Number of atoms of zinc is calculated by the Avogadro number.

Now, according to mole concept

$6.022\times 10^{23}$ molecules of enzyme consists of $6.022\times 10^{23}$ atoms of zinc

So, 1 molecule of enzyme contains = $\frac{6.022\times 10^{23}atoms of zinc}{6.022\times 10^{23} }$

= 1 atom of zinc.

Hence, every carbonic anhydrase molecule consists of 1 atom of zinc.

5 0

3 years ago

Answer this question pleas

Korvikt [17]

Answer:nope

Explanation:

Just no

4 0

3 years ago

Read 2 more answers

Do organs of different species resemble each other?

spin [16.1K]

<span>This really depends on how closely related the species are. Species from vastly unrelated taxonomic groups are likely to have organs that differ substantially. Think for example of the compound eye of a spider and the eye of a human, or the bones of a fish compared to the cartilage of a shark. These are examples of species that are not closely related at all. Then think of a chimpanzee and a human. The organs of both species are very similar in form and function as they are closely related. </span>

6 0

3 years ago

Perform each of the following unit conversions using the conversion factors given below:

andrezito [222]

1. 1086.04 mmHg

2.70.213 mmHg

3. 95.954 kPa

<h3>Further explanation</h3>

Pressure (P) is the force applied per unit area

Can be formulated :

$\tt P=\dfrac{F}{A}$