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SpyIntel [72]
3 years ago
7

Vibrio cholerae is a bacterium that lives in water and is normally harmless to humans. If infected by a certain type of virus it

acquires the genes to produce the cholera toxin and now can cause disease in humans. This acquisition of genes is an example ofa. transfectionb. transductionc. conjugationd. binary fission
Biology
1 answer:
zvonat [6]3 years ago
3 0

Answer: Transduction

Explanation:

This is a process acquired by bacteria like Vibrio cholerae to infect cells using genetic recombination process which occurs in bacteria when it incorporates its gene into the genome of a bacteriophage to gain access and infect the host cell after infection initiation by the bacteriophage.

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The higher the altitude, the lower the oxygen level in air. Climbers of very tall mountains risk altitude sickness, which is an
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Answer:

In both cases, the person is deprived of ATP source as the aerobic cellular respiration comes to halt.

Explanation:

At higher altitudes, low oxygen pressure deprives the cells of oxygen to serves as the terminal electron acceptor. In the absence of molecular oxygen, electron transport from NADH and FADH2 to O2 can not generate the proton concentration gradient required for ATP synthesis.

Cyanide poisoning also stops ATP synthesis by inhibiting the electron transfer from cytochrome oxidase to oxygen. Cellular respiration is a source of ATP for living aerobic cells. In the absence of ATP synthesis, the person is deprived of energy sources and feels weakness, dizziness, confusion, and shortness of breath.

3 0
3 years ago
What class of fish exhibit spawning?
Alborosie

Answer:

Spawn is the eggs and sperm released or deposited into water by aquatic animals. As a verb, to spawn refers to the process of releasing the eggs and sperm, and the act of both sexes is called spawning. Most aquatic animals, except for aquatic mammals and reptiles, reproduce through the process of spawning.

Most fish reproduce by spawning, as do most other aquatic animals, including crustaceans such as crabs and shrimps, molluscs such as oysters and squid, echinoderms such as sea urchins and sea cucumbers, amphibians such as frogs and newts, aquatic insects such as mayflies and mosquitoes and corals, which are actually small aquatic animals—not plants. Fungi, such as mushrooms, are also said to "spawn" a white, fibrous matter that forms the matrix from which they grow

(Courtesy, www.wikipedia.com, Article: Spawn)

3 0
3 years ago
a student does an experiment for a science fair to study whether temperature affects the timing of crickets chirpthe student kee
Serga [27]

Answer: Timing of the cricket's chirps.

Explanation:

3 0
4 years ago
How does the thyroid gland help maintain and regulate calcium?
Art [367]

Answer:

When the calcium level is high in the bloodstream, the thyroid gland releases calcitonin. Calcitonin slows down the activity of the osteoclasts found in bone. This decreases blood calcium levels. When calcium levels decrease, this stimulates the parathyroid gland to release parathyroid hormone.

4 0
3 years ago
Need help with this.
alexandr1967 [171]

Answer:

1. car gets hot

2. Cars warm up in the sun due to the greenhouse effect: Sunlight passing through the windows into the car is mostly absorbed by interior surfaces, then radiated back to the air as heat. ... “As a consequence, the inside of the car will warm because radiation is coming in but not much is going back out.”

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3 years ago
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