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kherson [118]
3 years ago
6

PLEASE HELP, CANT GET THESE 2

Biology
2 answers:
kicyunya [14]3 years ago
7 0
5. <span>b. eukaryotic cells.
7. </span><span>c. Mitochondria have their own set of DNA molecules.</span>
Papessa [141]3 years ago
7 0

Answer:

Q 5. b. eukaryotic cells.

Q 7. c.  Mitochondria have their own set of DNA molecules.

Explanation:

Eukaryotic cells are assumed to be originated from the prokaryotic cell. It was assumed that a bigger prokaryotic cell engulfed a smaller prokaryotic cell but it was not digested. Both lived in symbiotic associations with each other and evolved to form eukaryotic cells.

The best example is seen in mitochondria and chloroplast in eukaryotic cells. Both are assumed to be of prokaryotic origin because both shows the similarity to prokaryotic cell such as having their own DNA, 70s ribosome and double membranous structure.

Therefore the correct answer for question 5 is b.  eukaryotic cell and for question 7 is c.  Mitochondria have their own set of DNA molecules.

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Plzzz....someone ....Diffusion
Taya2010 [7]
The meaning of diffusion is the movement of the molecules reign from high concentration to a low concentration reign. As a result, there is a random motion between the atoms and molecules.
Hope this helps :)
7 0
3 years ago
The hay included as part of the culture medium provided a food source for bacteria. Bacteria are a good food source for some typ
lions [1.4K]

Answer:

  • Protozoans → would not have survived because they have no way to produce their own food → Heterotrophs
  • Algae → would have survived without this food source → Heterotrophs

Explanation:

The protist kingdom is composed of two main groups.  The principal difference between them is that algae can produce their own food, while protozoans need to ingest other organisms or organic molecules to survive.

  • Algaes are autotroph
  • Protozoans are heterotroph

<u>Protozoans</u>:

Microscopic unicellular organisms, eukaryotic and heterotrophs -predators or detritivores-. Most of them are aquatic free-living organisms, but some species are parasites. They feed on<u> bacteria</u>, other organic wastes, and other microscopic organisms. The phagocytosis process is normally used to ingest the food, invaginating their cell membrane.  

<u>Algae</u>:

Eukaryotic micro- or macroscopic organisms. Autotroph and photosynthetic. They might be either unicellular or pluricellular. They use sunlight to synthesize organic matter from water, CO₂, and mineral salts. Unicellular ones can be free-living or associate with others to form colonies. They are part of the phytoplankton and are ingested by heterotrophic organisms. Pluricellular algae do not create real tissues but they compose a tale. The depth at which they inhabit depends on the pigments they produce. All of them inhabit fresh or sea waters.

8 0
3 years ago
Help with question 2. A B &amp; C. the gizmo is Cell Types
Mariulka [41]

A.  Fine Focus.

B.  Nucleus, Cytoplasm, and membrane

C. 30 Micrometer.

Erythrocytes are well known to have no nucleus but in fact, they lack most organelles such as the Golgi apparatus endoplasmic reticulum and mitochondria. Hair consists of two parts the root and the hair shaft. The root is the part of the living hair located in the middle layer of the skin the dermis.

Epidermal root cells in some plants produce root hairs and tubular growths that increase the surface area of ​​the root. Unlike other cells in the body, red blood cells do not have a nucleus. This habit dates back to when mammals began to evolve. Other vertebrates such as fish reptiles, and birds have erythrocytes that contain dormant nuclei. To allow red blood cells to carry an increased load of oxygen cells evolved to function without a nucleus and other associated organelles.

Learn more about Cell Types here:-brainly.com/question/342784

#SPJ1

6 0
1 year ago
Which fuel has the shortest span of renewability?
Arte-miy333 [17]
<span> It's solar, because s</span>olar energy is a renewable resource that is virtually endless as long as the sun shines.<span />
6 0
3 years ago
Read 2 more answers
As cell size increases, the surface area-to-volume ratio increases.<br> a. True<br> b.False
Lerok [7]
The answer is False

Hope this help :)
4 0
4 years ago
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