Which would be the best evidence that a cell is using active transport to move a substance across its cell membrane?

A pathogenic strain of bacteria has become resistant to an antibiotic that once could kill it. What has happened to these bacter

Andrews [41]

The answer is -Only the few bacteria that were immune to the antibiotic survived and reproduced, making all their offspring immune to it as well.

Bacteria (or any other organism) are not able to make changes to their DNA in order to protect themselves or to learn to remove the receptors on their cell surfaces. If they were able to produce toxins against the antibiotics, they would all survive.
These leave the second choice as the correct answer. This is the real situation, and is a good example of natural selection.

6 0

3 years ago

Please help!!! Explain how similar and different sexual reproduction in plants and animals is?

uranmaximum [27]

Plant's reproduce via. pollen or seeds, whilst the animals reproduce by, and I quote, "getting on top of each other to have a fun time". Hope that helped

4 0

2 years ago

Read 2 more answers

What are the classification levels of humans for order, suborder, family, tribe, genus, and species? Group of answer choices Mam

Finger [1]

Answer: Human classification levels for order, suborder, family, tribe, genus and species are;

Primates, Primates, Haplorhini, Hominidae, Hominini, Homo, and sapiens , Hominidae, Hominini, Homo, and sapiens

Explanation:

Human taxonomy is the systematic classification of humans.

The order is primates include placenta animals including humans, that have good eyesight, flexible hands and feet, well developed brain and they include man, lemurs, apes e.t.c.

Suborder Haplorhini have a plate which cause a separation between the temporal fossa and eye socket.

Family Hominidae include group of animals that have well developed forearms and flattened digits nails.

Humans are called homo sapiens which means wise man. It is a Latin word...

Homo means man and sapiens means wise.

4 0

3 years ago

Organisms that originated in a certain geographic region and can only be found in that region are said to be ____.

aleksklad [387]

Organisms that originated in a certain geographic region and can only be found in that region are said to be endemic.

Explanation:

Endemic organisms are taxonomic species (plants and animals) which originates and distributed only in specific geographic regions. This state of evolution is called endemism.

They are said to be native or indigenous to that particular region which can be an ecological habitat, an entire nation, an island, a mountain range etc. Certain parts are known for majority of their species being endemic like St. Helen Island, New Caledonia Island, Hawaiian Islands, Southern regions of Africa, and Australia.

The species becomes endemic to a particular region because of the presence of certain bio-geographical environmental qualities of that habitat which are favorable to that species.

When these conditions become unfavorable, then species becomes restricted leading to endangerment or extinction of the species.

Examples:

Kangaroo - Australia
Nilgiri Tahr, - Nilgiri Hills, India
The Redwood trees of West Coast of the USA
Plants like kalo, sumac of Hawaii

4 0

3 years ago

Traits are an expression of the structure or characteristic. True or false.

hammer [34]

Answer:

True is the answer

7 0

2 years ago