Help me on number 20 and I will think u

Biology

1 answer:

Zepler [3.9K]3 years ago

5 0

The pyramid is not shaped like a typical pyramid, because the bottom should be bigger and getting smaller on top.

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Refine #3- What do viruses need to do in our cells in order to replicate?

Lelu [443]

Answer:

Release toxins in the cell

Explanation:

Viruses cannot replicate on their own, but rather depend on their host cell's protein synthesis pathways to reproduce. This typically occurs by the virus inserting its genetic material in host cells, co-opting the proteins to create viral replicates, until the cell bursts from the high volume of new viral particles.

4 0

3 years ago

Time Remaining 22 minutes 56 seconds00:22:56 Item 9 Time Remaining 22 minutes 56 seconds00:22:56 Production of a neurotoxin that

Radda [10]

Answer:

The correct answer is: Clostridium Tetani.

Explanation:

Clostridium tetani is a Gram-positive bacteria found in soil.

C. tetani may grow and generate tetanospasmin, a powerful toxin that interferes with motor neurons, producing tetanus, if introduced into a wound.

Tetanospasmin travels throughout the body via the lymphatic and bloodstream, where it is taken up by different sections of the nervous system. Tetanospasmin inhibits the release of the inhibitory neurotransmitters glycine and gamma-aminobutyric acid at motor nerve terminals in the nervous system. This blockage causes extensive motor neuron activation and muscular spasming. These muscle spasms usually start at the top of the body and work their way down, starting about 8 days after infection with lockjaw and progressing to spasms of the stomach muscles and extremities. The muscle spasms last several weeks.

Tetanus toxoid vaccinations, which are often given to children around the world, can inhibit the toxin's activity.

8 0

3 years ago

Two species of shorebirds are both adapted to live in coastal marshes. One species outcompetes the other for the small fish that

NNADVOKAT [17]

Answer:

The population of other specie of birds will decline or other specie of birds will find some alternate source of food to survive.

Explanation:

According to the Competitive exclusion principle, which is also known as Gause's Law, two specie living in the same niche and feeding on the same resource cannot co-exist stably.

As we have well studied the theory of natural selection which states that only those organisms survive which have better tendency to compete for food and adapt to the environmental conditions.

Coming towards the question, what wi ll happen when One species outcompetes the other for the small fish , the other specie will not get enough food and will start to die or decline in population. Eventually either other specie needs to find another alternative food source for itself or migrate at some other location where there is less competition otherwise it will just not exist anymore at that niche.

Hope it help!

7 0

3 years ago

Cell theory is based on a series of discoveries. In 1655, Robert Hooke coined the word "cell" from his investigations of cork ce

S_A_V [24]

C seems like the best choice here. Choice C because Pastuer has added a new portion to the cell theory eased on his new scarification findings. Therefore, scientific theories can be modified with new empirical data. A theory is just an argument widely agreed upon, not exactly a proven piece of information.

8 0

3 years ago

Read 2 more answers

Diffusion continues until

Viktor [21]

Equilibrium.
diffusion occurs due to differences in concentration of substances in different regions. then substances will naturally spread out (due to innate Brownian kinetic energy). the spreading I. e. diffusion will stop until equilibrium is achieved.
note: those substance particles are still moving due to the innate Brownian kinetic energies!

5 0

4 years ago