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grigory [225]
3 years ago
7

A nutrient medium that contains at least one ingredient that is not chemically definable would be termed ________.

Biology
1 answer:
natima [27]3 years ago
8 0

The correct answer is a. Complex

A complex or undefined medium is rich in nutrients, which contain water-soluble extracts of plant or animal tissue, a sugar, (often glucose is added to serve as the main carbon and energy source). The combination of extracts and sugar creates a medium which is rich in minerals and organic nutrients, but the exact composition is unknown.

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The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by a recessive mutant gene that independently
rusak2 [61]

Answer:

It is expected to obtain 576 individuals with normal wings and body with normal hair, 192 with normal wings and hairy body, 192 with vestigial wings and body with normal hair, and 64 with vestigial wings and hairy body.

Explanation:

Since only the wild-type of the offspring cross each other and since the parents have antagonistic phenotypic characters for each gene, all the progeny produced in the F1 is heterozygous with VgvgHh genotype, where

Vg: Normal wings.

eg: Vestigial wings.

H: Body with normal hair.

h: Hairy body.

Once F1 reproduces with each other, the Mendelian proportions 9/16, 3/16, 3/16, 1/16 expected in the F2 generation are produced.

Since in total there were 1024 individuals in the offspring, this amount is multiplied by the expected proportions, giving rise to the mentioned result.

5 0
4 years ago
A diagram of a human skeleton. ​
PtichkaEL [24]

Answer:Here is a detailed form of the human skeleton.Hope it helps!

7 0
3 years ago
Discuss the possible fonction of plasma membrane of pseudomonas<br>​
Alex787 [66]

Answer:

Distinctive characteristics of the cell membrane in the <em>Pseudomonas</em> genus:

- low outer membrane permeability

- protein channels for the uptake of nutrients

- porin proteins with cell adhesion and signaling functions

Explanation:  

The plasma membrane is a lipid bilayer that separates the cytoplasm of the prokaryotic cell from the external environment. The cell membrane is selectively permeable in order to regulate the transport of substances (nutrients and cell waste products). <em>Pseudomonas</em> is a genus of Gram-negative bacteria that have a thin peptidoglycan layer and an outer membrane. In <em>Pseudomonas</em> species, the cell membrane contains porin proteins involved in the uptake of nutrients, such as, for example, OprB, OprB2 (glucose), OprG (phosphate) and OprH (pyrophosphate). Moreover, the cell membrane of these bacteria has low outer permeability, which confers a high resistance to antibiotics.

8 0
3 years ago
In 3–5 sentences, explain how the shape of planetary orbits affects their orbital velocity. Include the proper law of planetary
skad [1K]

Answer:

The planet moves faster when closer to the Sun and slower when it is far from it

Explanation:

The law of planetary motion that answers to this question is the 2nd Kepler's law, which states that:

"A line connecting the centre of the Sun to the centre of each planet sweeps out equal areas in equal time intervals"

In order to understand what are the consequence of this law to the orbital velocity of each planet, we have to keep in mind that planets have an elliptical orbit, with the Sun occupying one of the two focii (Kepler's 1st law).

As a result, the planet at some point of the orbit is farther from the Sun, while at some point is closer to it.

Given to Kepler's second law, this means that when the planet is farther, the orbital velocity must be lower (because the line connecting the planet to the Sun is longer, so it can cover the  same area moving less), while when the planet is closer to the Sun, the orbital velocity must be higher (because the line connecting the planet to the Sun is shorter, so it will cover less area if moving at the same speed.

5 0
4 years ago
Why are proteins not found in the proximal convulated tubule
Lana71 [14]
Glucose is filtered through the glomerulus into the Bowman's capsule. However, in the proximal convoluted tubule (PCT), glucose molecules, almost 100% of them, are actively reabsorbed back into the blood. ... Proteins, do not filter through the glomerulus under normal cicumstances. They are simply too large to do so
5 0
2 years ago
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