All categories

2 years ago

Amoeba sisters: nature of science

Biology

1 answer:

Masteriza [31]2 years ago

4 0

Answer:

The scientific mrthod is a process used by scientists to find answers to a question or to solve a problem. No there isn't just one because there are several versions of the scientific method. Some versions have more steps, while others may have only a few. Scientists can add steps, take out steps, revise, or make models.

You might be interested in

This macromolecule assists with short term energy and stores energy. Which description

DENIUS [597]

Answer:

Explanation: Lipids are used for short term energy and stores energy.

Lipids are made up of fatty acids.

3 0

2 years ago

An enzyme known as acetylcholinesterase is present in the synaptic cleft. what is its role?

mamaluj [8]

The function of acetylcholinesterase in the synaptic left is to bind Ach receptors on the post-synaptic membrane and relays signal from the nerve. Acetylcholinesterase is an enzyme that catalyzes the breakdown of acetylcholine. Some other cholines functions as neurotransmitters. ACHE gene is found in the chemical synapses and neuromuscular junctions of cholinergic. Acetylcholinesterase belongs to carboxylesterase group of enzymes. During the time of neurotransmission Ach which is released from presynaptic neuron to synaptic cleft. Acetylcholinesterase is also found in red blood cells membranes whereby different forms constitute the Y blood group antigens.

8 0

2 years ago

7) Calculate ∆G^0' for the following reaction: glucose + 6O2 → 6 CO2 + 6 H2O. Is this reaction exergonic or endergonic?

san4es73 [151]

The reaction is endergonic.

<h2>Procedure - Determination of the Gibbs reaction type</h2>

<h3>Thermochemical model</h3>

First, we need to determine the Gibbs free energy function ( $\Delta G_{o}$ ), in kilojoules, of the entire reaction by this formula:

$\Delta G_{o} = \Sigma\limits_{j=1}^{m} n_{j}\cdot g_{o, j} - \Sigma\limits_{i=1}^{p}n_{i}\cdot g_{o,i}$ (1)

Where:

$n_{i}$ - Number of kilomoles of the i-th reactive, in kilomoles.
$n_{j}$ - Number of kilomoles of the j-th product, in kilomoles.
$g_{o,i}$ - Specific Gibbs free energy function of the i-th reactive, in kilojoules per kilomole.
$g_{o,j}$ - Specific Gibbs free energy function of the j-th reactive, in kilojoules per kilomole.

<h3>Data from thermochemical tables</h3>

From thermochemical tables we have the following information:

Reactives

$g_{glu} = -2871596\,\frac{kJ}{kmol}$ , $g_{O_{2}} = 0\,\frac{kJ}{kmol}$

$n_{glu} = 1\,kmol$ , $n_{O_{2}} = 6\,kmol$

Products

$g_{CO_{2}} = -137150\,\frac{kJ}{kmol}$ , $g_{H_{2}O} = -237180\,\frac{kJ}{kmol}$

$n_{CO_{2}} = 6\,kmol$ , $n_{H_{2}O} = 6\,kmol$

<h3>Determination of the Gibbs free energy function</h3>

Now we proceed to determine the Gibbs free energy function and later determine the nature of the <em>thermochemical</em> reaction:

$\Delta G_{o} = (6\,kmol)\cdot \left(-137150\,\frac{kJ}{kmol} \right) + (6\,kmol)\cdot \left(-237180\,\frac{kJ}{kmol} \right)-(1\,kmol)\cdot \left(-2871596\,\frac{kJ}{kmol} \right) - (6\,kmol)\cdot \left(0\,\frac{kJ}{kmol} \right)$

$\Delta G_{o} = 625616\,kJ$

The Gibbs free energy function of the <em>entire</em> reaction is 625616 kilojoules.

<h3>Analysis of the result</h3>

The Gibbs free energy function has a <em>positive</em> sign, which means that this reaction is endergonic.

To learn more on Gibbs free energy, we kindly invite to check this verified question: brainly.com/question/9552459

6 0

2 years ago

What are some important functions cells perform in the human body?

kaheart [24]

Answer:

1: Movement (muscle cells) 2: Conductivity (nerve cells) 3: Metabolic absorption (kidney and intestinal cells) 4: Secretion (mucous gland cells) 5: Excretion (all cells) 6: Respiration (all cells) 7: Reproduction (all cells) MedicTests.com.

Explanation:

6 0

2 years ago

If your mother and father both have green fingernails, which is caused by a recessive allele, the odds of your having only one a

luda_lava [24]

Answer:

d. 0

Explanation:

Since the condition is caused by a recessive allele, it means each of the parents have two copies of the affected allele for the trait. One copy of an affected allele will be inherited from the father and another affected allele will be inherited from the mother.

<em>Two alleles for the disorder will be inherited each from the either parent. Hence, the odds of having only one allele for the disorder is zero (0)</em>

4 0

3 years ago