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photoshop1234 [79]
3 years ago
9

Scientists discovered a fossilized cockroach trapped in amber, which was supposed to be about 50 million years old. DNA fingerpr

inting and comparison with today’s living cockroaches revealed that modern cockroaches have certain additional genes which allow them to survive in today’s colder climate. Which of these could be the correct explanation for this discovery?
Biology
1 answer:
telo118 [61]3 years ago
7 0
<span>The reason why the modern cockroaches have certain additional genes which allow them to survive in today’s colder climate is because of evolution. The species can grow to be able to live in certain environments. Cockroaches are to some degree summed up creepy crawlies without extraordinary adjustments like the sucking mouthparts of aphids and other genuine bugs; they have biting mouthparts and are likely among the most primitive of living neopteran bugs.</span>
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“Red rust is one of the destructive diseases in tea plants which results adverse effect on tea yield. It is caused by a type of
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Answer:

The correct answer is - c) Pathology.

Explanation:

Mycology is the branch of biology in which students study fungi and their characteristics including their biochemistry, taxonomy, and genetics.

Agronomy is the other branch of biology that deals with agriculture and its practices and work to improve the crops.

Phycology is the study of algae and their characteristics including their biochemistry, taxonomy, and genetics.

The disease and its causes are studied under the pathology branch o  biology therefore, red rust would be studying in this discipline.

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The second messenger in the following G-protein-linked-receptor pathway is signal moleculeG protein linked receptor activated G
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Answer:

Answer is D - cAMP.

Explanation:

cAMP is a small molecule that functions as an intracellular signaling molecule - a second messenger. The first messenger would be the thing that activated the GPCR (e.g. a hormone). The GPCR is a signal transducer (converts extracellular signal to intracellular signal). Once activated, the GPCR activates  adenylate cyclase which can be called a signal effector - it is an enzyme that produces cAMP.

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kvasek [131]

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Hitman42 [59]
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A puff of air to the eye causes a reflexive blink. If you precede the puff of air with a buzzer, eventually the buzzer will caus
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There are options for this question they are:

a) neutral stimulus; conditioned stimulus

b) conditioned stimulus; neutral stimulus

c) unconditioned stimulus; conditioned stimulus

d) neutral stimulus; unconditioned stimulus

e) unconditioned stimulus; neutral stimulus

The correct answers are - In this example, the buzzer begins as the neutral stimulus and eventually becomes the conditioned stimulus. The buzzer initially is a neutral stimulus because it have no role to play in the blinking response. Eventually though through learned association the buzzer becomes a conditioned stimulus because you now associate it with a puff of air to the eye which in turn causes you to blink.

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