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3 years ago

The signs used depend on the species being surveyed and include the presence of runways and tracks on *

Biology

1 answer:

amm18123 years ago

5 0

Answer:

(a). soft substrates

Explanation:

Mobile organisms can be measured by both direct and indirect methods. Direct methods may involve observing the actual behavior (e.g., scoring via timing). Moreover, indirect methods are those where the technique used depends on the species being examined, collecting information such as through recording of tracks in the soft substrate (e.g., mud, sand, snow), presence of fur/feathers, droppings (mammals), etc. For example, indirect observation of insects may involve the determination of exoskeletons, sounds, etc.

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This is where the genetic information is found in a eukaryotic cell?

igor_vitrenko [27]

DNA is where genetic information is stored

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3 years ago

Oceans and seas can act as a heat reservoir to regulate climates. They can absorb great quantities of heat in the summer, with v

Klio2033 [76]

Answer:

The high specific heat of water caused by hydrogen bonding

Explanation:

Specific heat capacity of a substance is the quantity of heat required to raise the temperature of a unit mass of that substance by one degree Celsius (1° C).

Due to the hydrogen bonding present in water, water has a high specific heat capacity of 4184 Joules per kilogram. This means that, water has to absorb 4,184 Joules of heat for the temperature of one kilogram of water to increase 1°C. When compared to other substances such as metals, this is very high. For example, the specific heat capacity of copper is 385 Joules per kilogram which means that it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

Therefore water, can absorb a large quantity of heat with very little changes in its temperature. This property of water helps the oceans and seas to serve as heat reservoirs by absorbing a large quantity of heat in hotter seasons and releasing these heat in colder seasons.

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2 years ago

Meselson and Stahl's experiments proved that DNA replicates by which mode?

Irina18 [472]

Answer:

Semi-conservative

Explanation:

Meselson–Stahl experiment proved that DNA replication is a semiconservative process, feeding E. colo bacteria with different types of Nitrogen isotopes (N14 and N15).

Changing the type of radioactive compound in different times of bacteria grow, they could observe that both of the isotopes were present on the bacteria culture.

Basically, if the bacteria present both of them, the DNA was replicated semiconcervely.

Guess what? they show both! (See the image for more information)

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3 years ago

Which segments of DNA that code for specific traits

Paraphin [41]

Gene. A segment of a DNA molecule that codes for a particular protein and determines the traits of the individual. A gene is the basic unit of heredity in a living organism

Hope it helps!

4 0

3 years ago

The adenine of the start codon is located at the +1 position. Use the DNA Mutations Interactive to determine which statements de

IgorC [24]

Answer:

Question contains 6 statements.

1. a substitution of G to U at position +13 in the sense strand

2. a transition at position +12 in the antisense strand

3. a transversion of C in the sense strand of the histidine codon

4. a G nucleotide is inserted after position +1 in the antisense strand

5. a deletion of the A at position +7 in the antisense strand

6. an insertion of A between positions +7 and +8 on the sense stands

Among these only 2 statements are correct.

Below are the correct statements.

Explanation:

2. a transition at position +12 in the antisense strand

5. a deletion of the A at position +7 in the antisense strand

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3 years ago