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viva [34]
3 years ago
10

10 What is a fossil?​

Biology
1 answer:
m_a_m_a [10]3 years ago
8 0

Answer:

Simple answer:

A fossil is any sort of remain from an animal, like bones, teeth, even the whole thing etc...  that has been preserved over time.

Hope this helps :)

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Next the researchers repeated the experiment in part c but instead of mixing the ax and ay strains, they put one strain on each
Nadya [2.5K]
The correct answer is none of the above.

Bacterial cells can transfer genetic material through a process called bacterial conjugation. This process involves the direct physical contact of the bacterial cells and a horizontal gene transfer. The genes which are transferred are most of the times beneficial for the recipient, such as genes for antibiotic resistance.

In this example, bacterial cells cannot have physical contact, since they are separated by a glass filter. Therefore, the bacterial conjugation cannot happen. Given that no gene transfer can be achieved, the AY strain remains bio- trp- and is unable to grow on any medium that lacks bio or/and trp. 
5 0
3 years ago
Starch, cellulose, dextran, and glycogen are polysaccharides. How are they similar? To what are their different properties due?
daser333 [38]

Answer:

similarity

Starch, cellulose,dextran and glycogen are all polymers of glucose

differences

                monomer/glucose     glycosidic bond    branching

1.starch              α glucose          1-4 and 1-6               branch and unbranced

  amylose                                       1-4                          unbranched

  amylopectin                               1-4 and 1-6              branched

2. dextran          α glucose          1-6                           branched

3. cellulose        β glucose           1-4                          unbranched, linear        

4. glycogen       α glucose           1-4 and 1-6              branched (shorter

                                                                                     branches than starch)

Enzyme: amlase acts on starch and cellulase acts on cellulose as they are specific for their substrates.

Explanation:

Starch: Consists of both branched amylopectin and unbranched amylose

Enzymes: Enzymes are specific as the gulcose molecule in starch is α and in cellulose is β which differ in their position of hydroxyl groups at anomeric carbon, their structures differ so they form different bonds. Active sites of enzymes can act only on specific bonds a sthey can fit to their specific substrates.

3 0
3 years ago
What is the general formula for fatty acids?
notsponge [240]

Answer:

Fatty acids are long chain carboxylic acids, they contain the carboxyl, COOH, functional group. The general formula for a fatty acid is R-COOH where R represents a long hydrocarbon chain. If the hydrocarbon chain, R, contains only single bonds between the carbon atoms, the fatty acid is said to be saturated.

5 0
2 years ago
What characteristics of an atom determines its properties?
MaRussiya [10]
Its atomic mass determines its properties? hope this is correct
8 0
3 years ago
Read 2 more answers
The information carries by DNA incorporated in a code specified by the ?
Lady_Fox [76]

Answer:

The information carried by DNA is incorporated in a code specified by the: specific nucleotide sequence of the DNA molecule. The enzyme DNA ligase is responsible for: linking short DNA segments.

Explanation:

3 0
3 years ago
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