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Studentka2010 [4]
3 years ago
8

Select all that apply. Comets are composed mostly of _____.

Biology
2 answers:
lubasha [3.4K]3 years ago
7 0

Answer:

Hi! It would be frozen gases and meteors dust. (If you get to pick more than one). Hope I helped! :)

Explanation:

ivanzaharov [21]3 years ago
6 0
The answer is frozen gases
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Slippery?(of a frog)<br> 4 answer choices-chromatophore<br> mucus<br> nare<br> nictitating membrane
Yuliya22 [10]

Answer:

Its mucus

Explanation:

Mucus is what makes a frog feel slippery or slimy. Frogs don't drink water, instead they absorb it through their skin. Frogs also use their skin to breathe. A layer of mucus on the skin helps keep moisture trapped next to it, and this moisture transfers oxygen into the frog's body.

7 0
3 years ago
After diffusion of a neurotransmitter across a synaptic cleft, how is the neurotransmitter typically perceived by the post-synap
Rama09 [41]

Answer:

by binding to an ion channel

Explanation:

The neurotransmitters are chemical messengers capable of transmitting a signal from a given nerve cell across biological junctions named 'synapses' to target cells such as, for example, other nerve cells (e.g., neurons). In the cell, the neurotransmitters are transported into internal vesicles that are fused with the cell membrane to release them in the synaptic cleft by the process of exocytosis. Subsequently, the neurotransmitters bind to cell receptors localized on the postsynaptic membrane and thus trigger responses in postsynaptic cells. For example, glutamate is a neurotransmitter capable of exciting nerve cells by binding to a transmitter-gated ion channel called N-methyl-D-aspartate (NMDA).

3 0
3 years ago
What is a non-example of diffusion?
prisoha [69]
<span>A non-example of diffusion is a brick.
Diffusion is termed as movement of molecules from a region of high concentration to a region of low concentration. A good example is how oxygen enters the body during external respiration which is referred to as breathing.
 Some of examples of diffusion are diffusion of mineral salt in the soil water into the root hairs cells. Diffusion of oxygen into the carbon dioxide and cell out of the cell in a unicellular like an amoeba, Diffusion of oxygen through the lungs and carbon dioxide out to the lungs of mammals.
 Diffusion of carbon dioxide and oxygen out by the leaf through the stomata.</span>
6 0
4 years ago
A certain plant has a color that can range from green to yellow. Some plants are very green, and some are very yellow, but most
umka21 [38]
Because there are not strictly green and yellow plants, this means that the color can be affected by multiple genes. If it was only affected by one gene then you would see only the two groups for the color, green and yellow. The answer is D.
8 0
3 years ago
Read 2 more answers
Cell differentiation always involves
mestny [16]

Answer: (C) The production of tissue-specific proteins.

Explanation:

 The cell differentiation is the process in which the cell change from one cell place to another place. It basically occur due to the process of gene expression.

The cell differentiation involve the production of the specific tissue protein known as muscle actin. In cell differentiation, the pluripotent stem cell basically go in the specific differentiation level and then reach in the state of fully differentiation.

The fully differentiation produced a specific function that the production of the protein. Therefore, option (C) is correct.

5 0
3 years ago
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