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expeople1 [14]
4 years ago
13

Over millions of years, birds developed as a species. This relates to _____.

Biology
1 answer:
Tpy6a [65]4 years ago
5 0
<span>Evolution of birds is result of a drastic change in how dinosaurs evolved. </span>
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Propane is burned to provide the heat in many cooking grills. The chemical
tangare [24]

Answer: it's 3CO2+4H2O+Energy

Propane is a linear alkane of formula C3H8. It is mainly used as fuel (this is the main component of liquefied petroleum gas) in cooking and chemical industry reactions.

The reaction of its complete combustion by the presence of oxygen is:

C3H8 (gas) + 5O2  ==> 3 CO2 + 4H2O + energy (2220⋅kJ)

As we can see, propane can release carbon dioxide and water as every combustion reaction, and a lot of energy in the form of heat.

6 0
2 years ago
13.A dividing cell has a line of vesicles on the metaphase plate between the two daughter nuclei. Is it a bacterium, plant, or a
nata0808 [166]

Answer:

plant cell

Explanation:

The Golgi apparatus is a cell organelle responsible for modifying, sorting and packaging proteins and lipid molecules into vesicles (i.e., Golgi vesicles) for their delivery to targeted cell sites. A plant cell can contain many -even hundreds- of Golgi apparatus. During cell division of plant cells, Golgi vesicles combine at the metaphase plate in order to form a structure called phragmoplast. Subsequently, the cell plate formed by phragmoplast vesicles grows from the center to the cell walls. Finally, the vesicle membranes fuse to form a plasma membrane that divides the plant cell into two cells.

4 0
3 years ago
Which statement describes the moment magnitude scale? A. It measures only small earthquakes. B. It collects data using a seismog
Verdich [7]

Answer:

The moment magnitude scale is a scale that rates earthquakes by estimating the total energy released by an earthquake . Estimating the total amount of energy released, enables comparison of earthquakes more accurately.

This scale can be used to rate earthquakes of all sizes, near or far. The following statements describe the moment magnitude scale:

B. It collects data using a seismograph.

D. It estimates the total energy released from an earthquake.

E. It determines the amount of damage caused by an earthquake.

Explanation:

8 0
3 years ago
Read 2 more answers
Polypeptides that are transported in vesicles are first made by _____ a ribosomes on the rough endoplasmic reticulum. b the smoo
Zielflug [23.3K]

a) ribosomes on the rough endoplasmic reticulum

mRNA (created by DNA) leaves the nucleus through the nucleic pores, and from there will enter a nearby ribosome since the rough endoplasmic reticulum is surrounding the nucleus. It is there that polypeptides are made and transported in vesicles to the Golgi apparatus because they cannot touch the cytoplasm when still incomplete. Hope this helped.


6 0
3 years ago
Discuss ONE type of control that occurs at the chromosomal/DNA level and ONE that occurs at the mRNA level. Compare these two co
blagie [28]

Answer:

One type of control that occurs at the DNA level is the regulator genes. The regulator genes synthesize a repressor molecule that binds to the operator and stops transcription of the structural genes. Whenever there is enough amount of structural genes made, a repressor molecule will bind to the operator region and stop further transcription.

One type of control that occurs at the RNA level is RNA splicing. By this method, different proteins can be made by a single RNA transcript.

8 0
3 years ago
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