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Irina18 [472]
3 years ago
13

The genes for a brain are found all the way down the vertebrate family tree in a small worm-like animal called amphicoelus. True

or false
Biology
1 answer:
Deffense [45]3 years ago
5 0

Answer:

Its false  

Amphicoelias altus (from the gr. "Hollow character on both high sides") is the only known species of the extinct genus. Titoniense, in what is now North America. Amphicoelias is present in stratigraphic zone 6 of the Morrison Formation

It was also similar in size to Diplodocus, about 25 meters long. Although most scientists have used this data to distinguish Amphicoelias and Diplodocus as separate genera, at least one has suggested that Amphicoelias is probably the largest synonym for Diplodocus.3 Amphicoelias altus, was named by paleontologist Edward Drinker Cope in December of 1877, although it was not published until 1878, for an incomplete skeleton consisting of two vertebrae, a pubis, the hip, and a femur, bone of the upper leg.4 Cope also named a second species, A. fragillimus

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When cells communicate by the signaling process, one cell produces a _________________BLANK that must be received by the _______
velikii [3]

Answer:

1. Signaling molecule

2. Signaling receptors

Explanation:

Hormones, growth factors, neurotransmitters, etc. serve the function of signaling molecules for cells. These molecules are released by one cell and bind to the receptors present on/in the target cells to elicit the desired response. Thereby, the signaling molecules serve in cell-cell communication.

For example, insulin hormone synthesized and released from beta cells of pancreas binds to its cell surface receptors present on the surfaces of liver cells and muscle cells to stimulate the uptake of the glucose from the blood.  

Likewise, neurotransmitters released from the presynaptic neuron bind to receptors present on the membrane of postsynaptic neuron and serve to carry the nerve impulse to the postsynaptic neuron.  

8 0
3 years ago
In a chemical bond between two or more atoms, what creates the bond?
antoniya [11.8K]
Electron pairs , because the atoms become stable by gaining the electron pairs
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3 years ago
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Which of the following would be considered a human activity with a positive impact on the environment?
Galina-37 [17]
A and D I think or A and B
3 0
3 years ago
4. Oxygen molecules move across cell membranes through a process called
Ivanshal [37]

Answer:

Diffusion

Explanation:

Oxygen molecules can travel through the phospholipid bilayer using diffusion. Diffusion is when molecules travel from a higher concentration to a lower concentration.

8 0
3 years ago
Match the enzymes with the molecules they help break down<br> a. Amylase<br> b. Pepsin<br> c. Lipase
Vika [28.1K]

Answer:

The correct  matches are given as follows:

a. Amylase - Starch

b. Pepsin - Protein

c. Lipase- fats

Explanation:

The digestion can be defined as the breaking down of the complex compounds of food into simpler compounds for their better absorption. There are various enzyme that help in the process of digestion. Amylase, pepsin, and lipase are enzymes.  The amylase is an enzyme responsible for breakdown of starch. The pepsin is responsible for the breakdown of protein into amino acids. The lipase is responsible for breakdown of fats.

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3 years ago
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