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N76 [4]
3 years ago
14

Drugs that block the operation of a neurotransmitter are called _______

Biology
1 answer:
xxTIMURxx [149]3 years ago
7 0
Ithink they are called agonists.
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What are at least three differences between apes and humans in the cranium and teeth?
Mama L [17]
 The following are key characteristics of ape skulls that human skulls do not have:

(1) Prognathic Jaws: A chimpanzee’s maxilla (upper jaw) and mandible (lower jaw) protrude significantly. Typically, the bone from the nose to the tip of upper teeth extrudes out at about a 45 degree angle, whereas a line drawn from the nose to the chin of a typical human is vertical or concave.

(2) Large Brow Ridges above the eye sockets. Humans have negligible brow ridges.

(3) Absent or small laid back forehead: Apes lack significant vertical foreheads. Humans have large vertical foreheads, which provide room for the much larger frontal lobeof our brains. This is an important difference, as the large frontal lobe of the human brain allows us the ability to make decisions and solve problems. It also controls our behaviors, voluntary movements, emotions, and consciousness. Without a forehead, an animal would not have room for a large frontal lobe, and could not perform functions that differentiate animals from humans. The ability to make tools, improve on them, and the ability to remember how to make them, wouldn’t be possible without a forehead and large frontal lobe.

(4) Small Ovoid or Flat Cranium that houses their much smaller brains. Human adult craniums are about two to three times the volume of ape craniums. Ape craniums are narrower than the lateral extents of the eye sockets, whilst human craniums are far wider then the outer extend of their eye sockets. 

8 0
3 years ago
The growth of plant seedlings is usually
zhenek [66]

Answer:

The correct answer is - A. phototropic and gravitropic.

Explanation:

A plant seedling grows usually two-direction shoots or stems towards light and roots towards the soil or in the direction of gravity. The movement of the plant toward a specific stimulus or effect parts is called tropism and different parts move in a different direction.

The movement of the roots of the plant is usually towards the direction of soil or gravity and this is called gravitropic. The shoot or stem grows from the seedling towards the direction of light and it is called phototropic.

7 0
3 years ago
Choose all the right answers.
jeka57 [31]
A plant begin to produce its own food in the following cases:
-when the first leaves are formed
-as soon as photosynthesis starts

Even the little new seeds grown-up from the food reserves, but start making their owm food as they see sunlight
4 0
3 years ago
How do cellular respiration and photosynthesis work together?
Igoryamba
Well, photosynthesis makes the glucose that is used in cellular respiration to make ATP

hope that helped!
7 0
3 years ago
Please select the word from the list that best fits the definition Ptolemy.
Svetlanka [38]
Ptolemy's model was Geocentric. This means that it put the earth at the center of the solar system, instead of the sun, with all celestial objects orbiting it. The first person to prove the validity of the heliocentric theory was Nicolaus Copernicus.
7 0
3 years ago
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