What is the oldest type of bacteria

1 answer:

5 0

The oldest type of bacteria is over 3 million years old I think. It comes from the cyanobacteria family! The bacteria is a type of algae! Discovered by Gregorio V. in the Late 1900's.

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The process of cellular respiration

valina [46]

Answer:

explanation:

o occurs in both plants and animals not just animals

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3 years ago

Which organism is a secondary consumer (3rd trophic level)? a. larvae b. copepods c. killifish d. snapper

anygoal [31]

ANSWER: B, killifish

REASONING: A secondary consumer consumes animals that eat only plants. Larvae and copepods do not fit these descriptions, because they do not eat animals. Snapper do eat animals, so do not fit the description either. Killifish eat small animals that do eat plants.

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4 years ago

What Evidence supports natural selection

SashulF [63]

<span>Fossil record, genetics, and examples of local adaptations all support the theory of evolution by natural selection.</span>

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3 years ago

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Which type of Medicare policy requires insureds to use specific healthcare providers and hospitals (network providers), EXCEPT i

Rus_ich [418]

Answer:

The correct answer is option B. medicare select.

Explanation:

A Medicare select policy is a medicare policy that limits the coverage to the network of hospitals, doctors, and healthcare providers. This medicare plan allows the insured to negotiate with the healthcare providers so it is cost-effective as they charge less for their services.

Other plans given in options such as advantage medicare give a wide range of network of healthcare provider however they charge more than the medicare select plan.

Thus, the correct answer is option B. medicare select.

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3 years ago

Which of the following is true about photosynthesis?

il63 [147K]

Explanation:

Photosynthesis takes place within the chloroplasts.

Photosynthesizing cells in algae and plants have structures called chloroplasts. These contain chlorophyll, a specialized compound which facilitates the conversion of light energy to energy stored in carbohydrates in the process photosynthesis. Pigment molecules like chlorophyll in plants and other organisms reflect and absorb light at specific parts of light's electromagnetic spetrum.

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent.

Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, in the light dependent reactions, within chloroplasts of plants, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent; it reduces the molecule NADP to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.