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zalisa [80]
3 years ago
8

1. what are protists? (1 point)

Biology
2 answers:
Volgvan3 years ago
7 0

1. eukaryotes that are not part of the plant, animal, or fungi kingdoms  

2. Today's protists and plants, fungi, and animals have an ancient common ancestor.

Naya [18.7K]3 years ago
5 0
1. <span>Protists are the members of an informal grouping of diverse eukaryotic organisms that are not animals, plants or fungi. They do not form a natural group, or clade, but are often grouped together for convenience, like algae or invertebrates.

2.</span><span>Todays protists include groups whose ancestors were among the very last to split from the organisms that gave rise to plants, animals, and fungi.</span>
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When you kick a soccer ball, you are using _____ to put the ball in motion. Question 1 options: A) force B) gravity C) chemistry
Ilia_Sergeevich [38]

Answer: A

Explanation:

Gravity is when you drop something, but in this case you aren’t dropping the ball. It definitely isn’t chemistry because you aren’t changing molecules or anything so that only leaves A which is the most reasonable answer anyways.

4 0
3 years ago
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Which group of non-prokaryotic organisms studied in microbiology typically have two life cycle stages: trophozoite and cyst?
Mama L [17]

Non-prokaryotic organisms typically have two life cycle stages: trophozoite and cyst is Protozoa.

<h3>What is Protozoa?</h3>
  • Protozoa is a group of single celled, non- prokaryotic organisms.
  • These may either be free living or parasitic in nature.
  • These are heterotrophs and reproduce asexually by binary fission.
  • The Protozoa consists of many unrelated or loosely related organisms.
  • They are divided into four major groups:  Sarcodina, Flagellates, Ciliates and Sporozoans..
  • Some protozoa consist of two phases in their life cycle: proliferative stage (trophozoites) and resting stage (cysts).
  • Trophozoites consists of the proliferative stage in which the protozoa divides and reproduces.
  • The resting cyst form helps the protozoa to survive harsh environmental conditions like harmful chemicals, extreme temperature and nutrient and water deficiency.

Learn more about protrozoa here:

brainly.com/question/15427385

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3 0
1 year ago
1.
Allushta [10]
1. The answer is "<span>the energy required to start the reaction".

</span>This energy is called as activation energy of the reaction. If the activation energy is high, reaction is slow. Enzymes help to carry out the reaction by a new path by reducing the activation energy. But the energy of reactants and the products remain as same as without enzyme.

2. The answer is "reaction in cells would be too slow to sustain life<span>".

</span>If the activation energy is very high for the reaction, then that reaction will be very slow and will require more time<span> to complete the reaction. Then survival is very low. Hence, the roll of enzymes is very important to sustain life.</span>
7 0
3 years ago
Fossilized non-seed vascular plants from the ____________________ Period have been identified. a. Devonian c. Permian b. Cambria
Ipatiy [6.2K]
Fossilized non-seed vascular plants from the Devonian period have been identified. 
<span>The Devonian is an early period and conformity of the Paleozoic Epoch forming from the edge of the Silurian Era.</span>
6 0
3 years ago
What is the structure of rRNA
poizon [28]
The ribosomal RNAs complex with proteins to form two subunits, the large subunit (LSU) and small subunit (SSU). During translation, mRNA is sandwiched between the small and large subunits, and the ribosome catalyzes the formation of a peptide bond between the two amino acids that are contained in the rRNA.
4 0
3 years ago
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