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timofeeve [1]
3 years ago
10

What makes Kingdom Protista unique compared to the other kingdoms?

Biology
1 answer:
Svetach [21]3 years ago
6 0
Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled.
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Which of the following might you use to help you make observations?
SCORPION-xisa [38]

Answer:

Touching, Smelling.

Explanation:

Touching will be useful to detect stimuli like coldness and hotness.

Smelling on the other hand will help to make observations on smell and change in smell. These two are among the five senses that we use to make observations as we record what we see, hear, touch and feel, smell and taste.  

7 0
3 years ago
Explain the thermal properties of water
Zinaida [17]

Answer:

A glance of earth taken from space will depict it blue. This blue colour is actually water, the major part of the earth is covered with water. We need water for almost everything, for example- drinking, bathing, cooking etc and therefore we should know about the properties of water. 65 % human body is composed of water. Water is essential for the survival of life on earth. Water is distributed unevenly on the earth’s surface. It forms a major solvent and dissolves almost every polar solute. So let us have a look at its properties.

Physical properties of water : Water is a colourless and tasteless liquid. The molecules of water have extensive hydrogen bonds resulting in unusual properties in the condensed form. This also leads to high melting and boiling points. As compared to other liquids, water has a higher specific heat, thermal conductivity, surface tension, dipole moment etc. These properties form the reason for its significance in the biosphere. Water is an excellent solvent and therefore it helps in the transportation of ions and molecules required for metabolism. It has a high latent heat of vaporization which helps in the regulation of body temperature

Chemical properties of water: Amphoteric nature:

Water can act as both acid and base, which means that it is amphoteric in nature.

Example:

Acidic Behaviour: H2O(l)+NH3(aq) ⇌ H3O+(aq)+NH+4(aq)

Basic Behavior: H2O(l)+H2S(aq) ⇌ H3O+(aq)+HS−(aq)

Redox reactions:

Electropositive elements reduce water to hydrogen molecule. Thus water is a great source of hydrogen. Let us see an example in this case:

2H2O(l)+2Na(s)→2NaOH(aq)+H2(g)

During the process of photosynthesis, water is oxidized to O2. As water can be oxidized and reduced, it is very useful in redox reactions.

Hydrolysis reaction

Water has a very strong hydrating tendency due to its dielectric constant. It dissolves many ionic compounds. Some covalent and ionic compounds can be hydrolyzed in water.

Explanation:

7 0
3 years ago
Which type of rna functions as a blueprint for dna in that it makes a copy of the dna for transport outside of the nucleus?
dalvyx [7]
The answer is attached in a file please read it

6 0
3 years ago
A protein can begin to fold and to bind to other proteins while still being synthesized on the ribosome. True False
Gennadij [26K]

Answer: Yes

Explanation:

his amazing artwork shows a process that takes place in the cells of all living things: the production of proteins. This process is called protein synthesis, and it actually consists of two processes — transcription and translation. In eukaryotic cells, transcription takes place in the nucleus. During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. During translation, the genetic code in mRNA is read and used to make a protein. These two processes are summed up by the central dogma of molecular biology: DNA → RNA → Protein.

4 0
4 years ago
A population is growing exponentially what can you conclude
storchak [24]

Answer AND Explanation:

Exponential phase is the phase during which growth is rapid. The growth rate is proportional to the amount of material or number of cells of the organism already present. This rapid growth is due to:

  • An increase in number of cells dividing following a geometric progression.
  • Cells having adjusted to the new environment.
  • Food and other factors are not limiting hence cells are not competing for resources.
  • The rate of cell increase being higher than the rate of cell death.

8 0
3 years ago
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