Which answer best illustrates evolution by natural selection? A

1 answer:

3 0

Best Answer: the answer here is A. This is pretty much the definition for natural selection; a basic example is how Darwin theorised giraffes got their long necks. Over many generations, giraffes stretched to reach high branches = food. Only the taller giraffes reached the food, leading these to be the ones who would survive and hence breed, passing on their characteristic of a long neck. Fast forward many generations, and you have long necks in the entire species.
Hope that helped a little :)

You might be interested in

1.)Suggest why slow skeletal muscle fibres are small in diameter. 2.)The toxin curare was discovered in South America, where it

ryzh [129]

Answer:

1, to strengthen the bone

2, I would say it causes them to tense up (contract)

7 0

3 years ago

If an enzyme inhibitor binds at a site other than the active site of the enzyme, the nature of the inhibitor is described as

icang [17]

Answer:

B. non-competitive

Explanation:

As opposed as competitive inhibition, the non-competitive one does not bind with the active region of the enzyme. However, it does reduce the efficiency of the reaction because it changes the protein structure, making it unavailable for substrate.

Reversibility is related to the possibility of the reaction to be undone. If the bond is covalent, the enzyme will not return to its active state, so that would be a non-reversible bind.

7 0

3 years ago

Match the following:

sesenic [268]

Answer:

Explanation:

The correct match is given below:

1. Communicable by direct acquisition via vertical transmission. C. Treponema palladium (syphilis).

2. Communicable by indirect transmission via air droplets. B. Tuberculosis

3. Communicable by direct transmission via a biological vector. F. Malaria

4. Non-communicable. A. Clostridium tetani (tetanus).

5. Communicable by indirect transmission via fomites. D. Staphylococcus aureus.

7 0

3 years ago

Identify a structure other than a cell wall or a vacuole that might be found in a plant cell but not in an animal cell. explain

enot [183]

One structure that can be found is most plant cells is chloroplast. A plant cell may have around 0 to 20 chloroplast, depending on their location in plant or their function.

Chloroplast is the structure that photosynthesis occurs. Photosynthesis is the method that plant make food for themselves. They turn sunlight into food such as starch.

Plants are autotrophs, which means they make food themselves, they don't need food from other sources like animals. Therefore, chloroplast is not found in animal cells because we are heterotrophs, we feed on other food.

4 0

3 years ago

Which areas on Earth would be in danger of having both earthquakes and volcanoes?

seropon [69]

In general,earthquakes and volcanic eruptions occur at both divergent plate boundaries AND convergent plate boundaries.

Indonesia is one of the areas that would be in danger of having both earthquakes and volcanoes

7 0

3 years ago