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faltersainse [42]
3 years ago
5

Which bird is best adapted to survive in an environment dominated by seed-bearing plants?

Biology
1 answer:
dangina [55]3 years ago
7 0

Answer:

hummingbirds

Explanation:

Over many generations, hummingbirds have evolved beaks that are long, thin and well adapted to reach into flowering plants and extract nectar

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Please help me solve this
maksim [4K]

The anwer is C. It makes more sence and is more mature.

3 0
3 years ago
MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961.
andreev551 [17]

Answer:

All of the options are true for a MRSA infection.

Explanation:

<em>Staphylococcus aureus</em> is one of the most frequent pathogens causing hospital and community infections. <em>S. aureus</em> can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a  very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of S<em>taphylococcus</em> and some other bacteria. Also <em>S. aureus</em> can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat  MRSA infections  with the hope that can´t develop resistance to this new drugs.

3 0
3 years ago
If a government entity wanted to write regulations that might reduce smog, what human activities might they want to focus on?
Scorpion4ik [409]
Industry
Cars
Fuel burning
Use of chlorofluorocarbons
7 0
3 years ago
If the Pacific Ocean is rimmed by the Ring of Fire, what can we conclude about the plate boundaries in that region?
bulgar [2K]
If the pacific ocean was rimmed by the ring of fire we can conclude that the plate boundaries are constantly moving
3 0
3 years ago
In which case would facilitated diffusion be needed?
melomori [17]

Answer:

The voltage-gated potassium channels associated with an action potential provide an example of what type of membrane transport?

A. Simple diffusion.

B.<u> Facilitated diffusion. </u>

C. Coupled transport.

D. Active transport.

You are studying the entry of a small molecule into red blood cells. You determine the rate of movement across the membrane under a variety of conditions and make the following observations:

i. The molecules can move across the membrane in either direction.

ii. The molecules always move down their concentration gradient.

iii. No energy source is required for the molecules to move across the membrane.

iv. As the difference in concentration across the membrane increases, the rate of transport reaches a maximum.

The mechanism used to get this molecule across the membrane is most likely:

A. simple diffusion.

<u>B. facilitated diffusion. </u>

C. active transport.

D. There is not enough information to determine a mechanism.

Carrier proteins - exist in two conformations, altered by high affinity binding of the transported molecule. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLE: GluT1 erythrocyte glucose transporter.

Channel proteins - primarily for ion transport. Form an aqueous pore through the lipid bilayer. May be gated. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLES: Voltage-gated sodium channel, erytrhocyte bicarbonate exchange protein.

This might be helpful... because I don't know anything about facilitated diffusion.

5 0
3 years ago
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