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Ede4ka [16]
3 years ago
13

How does a hydrometer work?

Biology
1 answer:
bija089 [108]3 years ago
5 0
A hydrometer is an instrument that measures the specific gravity (relative density) of liquids. The ratio of the density of the liquid to the density of water. A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float
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Which concept is correctly matched with an example from The Beaks of Finches lab? A) Variation – different "beaks" were availabl
victus00 [196]

Answer: Option A.

Different beaks were available

Explanation:

Variation is the difference between traits, cells, or characteristics between organisms of any species which is caused by change in genetic information or effect of environmental factors on the expression of genes.

From the question, different beaks were available because there is variation or differences in shapes, sizes and expression.

4 0
3 years ago
In order for translation to occur: Please choose the correct answer from the following choices, and then select the submit answe
sweet-ann [11.9K]

Answer:

there must be large numbers of free amino acids present in the cytoplasm

Explanation:

<em>In order for translation to occur, </em><em>there must be a large number of free amino acids in the cytoplasm.</em>

<u>These free amino acids are usually carried by the transfer RNA which also carries the corresponding mRNA codon.</u>

During translation, as the codons in the mRNA match their complements in the tRNA, the amino acid being carried by the tRNA is released and a peptide bond is formed between subsequent amino acids until the required polypeptide bond is formed.

Translation and transcription only occur simultaneously in prokaryotic cells where there is no barrier between the cell's genetic materials and the cytoplasm, unlike in eukaryotic cells where the genetic materials are housed in the membrane-bound nucleus.

4 0
2 years ago
| Write any two characteristics of drone bee. ​
kvv77 [185]

Answer:

-Drone bees fertilize the queen.

-Their stinger is a modified egg container, so its not actually a stinger!

-Drone bees have half the chromosomes of a female, therefore they have 16.

4 0
2 years ago
All living organisms break down sugar to obtain energy using cellular respiration, Which of the following chemical reactions rep
Ghella [55]

Answer:

The chemical reaction that represents the process of aerobic cell respiration is oxygen + glucose → water + carbon dioxide + energy

Explanation:

Cell respiration occurs in the mitochondria of eukaryotic cells and consists of a series of chemical reactions in which energy in the form of ATP molecules is obtained from a glucose molecule in the presence of oxygen.

<u>Glucose is the main energetic substrate</u> to be able to synthesize energy in the form of ATP, through oxidative phosphorylation. At the end of the process ATP is obtained as products, and as waste compounds water and carbon dioxide, which can be schematized in the following chemical reaction:

              <em>              C₆H₁₂O₆  +  6O₂ →  6H₂O  +  6CO₂ + ATP ↑</em>

<em>                Glucose + Oxygen → Water + Carbon dioxide + Energy ↑</em>

This reaction summarizes what happens in aerobic cellular breathing, which is necessary to synthesize energy for cellular functions.

The other reactions:

  • <em>oxygen + water </em><em>→</em><em> glucose + lactose </em>
  • <em>glucose + lactose </em><em>→</em><em> oxygen + water </em>
  • <em>water + carbon dioxide + energy </em><em>→</em><em> oxygen + glucose</em>

<em>do not represent the components or the order of the reactions that occur in aerobic cell respiration</em>

7 0
3 years ago
Compare and contrast the following:
siniylev [52]
Aerobic exercise is the body producing energy WITH the use of oxygen (light activities like jogging). Anaerobic exercise produce energy without the use of oxygen and is typically a higher intensity that burns fat AND helps gain lean muscle mass (these are activities like weight lifting).
4 0
2 years ago
Read 2 more answers
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