BIOLOGY HIGH SCHOOL

Which is a type of event that could cause sudden changes in Earth's global climate?mass extinction
asteroid impact
continental drift
fossil formation

Answers

Answer 1
Answer: your answer is continental drift 

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Why is deforestation in tropical rainforests more devastating to the global environment than deforestation in temperate forests? (Points : 4) most temperate forests are not experiencing deforestation tropical rainforests provide less useable lumber temperate forests do not contribute to the reduction of carbon dioxide tropical rainforests are inhabited by indigenous tribes who are losing their way of life tropical rainforests have much higher biodiversity than temperate forests
A farmer sprays insecticide on his crops to kill unwanted insects. Most of the insects die, and the chemicals have the effect of damaging the DNA of the insects that are not killed. Which of these has happened?A. Sexual selection among the insects has changed the gene pool.B. Genetic equilibrium has been maintained.C. Mutations have arisen that may have altered allele frequencies.D. Individuals with new genes have immigrated into the population.
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How biotic and abiotic similar

A(n) __________ is created when sperm meets egg and contains all DNA necessary to create a person.a. zygote
b. blastocyst
c. embryo
d. fetus

Answers

Answer : The correct answer for the blank is -

a. zygote.

A zygote can be described as a diploid cell that is produced by the fusion of gametes (from each parent such as egg and sperm). The process of fusion is called fertilization and zygote is also called fertilized ovum/egg.

Zygote undergoes multiple rounds of proliferation (cell division through mitosis) and ultimately differentiates to produce the highly advanced stage, fetus (which is fully developed baby).

Thus, a zygote is formed when sperm meets egg and contains all DNA necessary to create a person.

Hello there,

The answer to your question is:

Zygote

Hope this helps.

In the presence of lidocaine, the action potential was NOT affected at R1 because _______. In the presence of lidocaine, the action potential was NOT affected at R1 because _______. lidocaine doesn't have an effect on the generation of action potentials lidocaine was applied upstream of R1 lidocaine was applied downstream of R1 there are no voltage-gated sodium channels to be affected

Answers

Answer:

In the presence of lidocaine, the action potential was NOT affected at R1 because lidocaine was applied downstream of R1

Explanation:

Lidocaine is an anesthetic that has the power to neutralize neuromal membranes. This anesthetic power allows the ionic fluxes capable of stimulating impulses to be diffused and this allows a dormancy to be achieved. However, when lidocaine is applied downstream to a molecule or structure, the action potential of that structure or molecule is not affected and it may continue to receive impulses.

Final answer:

Lidocaine does not affect the generation of action potentials because it blocks voltage-gated sodium channels.

Explanation:

In the context of neural signaling, lidocaine often functions as a local anesthetic by inhibiting voltage-gated sodium channels, which are necessary for the propagation of action potentials. If the action potential at R1 was not affected in the presence of lidocaine, it could be due to several reasons. One possibility is that lidocaine was applied upstream or downstream of R1, which would not directly impact the action potential at R1. Another possibility is that there are no voltage-gated sodium channels at R1 to be affected by lidocaine.

Learn more about Action Potential here:

brainly.com/question/33297947

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A new food source from the crossing of wheat and rye is called

Answers

Triticate is a crop species resulting from a plant breeder's cross between wheat (Triticum) and rye (Secale). It is produced by doubling chromosomes of the sterile hybrid that results when crossing wheat and rye. This doubling produces what is called a polyloid.

SOS:

The answer is triticum!!!

Hope this helps!!!

Which is an example of a spontaneous exergonic reaction?a. protein synthesis occurring in cells
b. marshmallows catching fire
c. photosynthesis

Answers

B.) Marshmallows catching fire. 

3 reasons why bringing back extinct animals would help preserve the planet

Answers

true hope this helps

Answer:

3 reasons why to bring back extinct animals would help preserve the earth is:

1.) Revived species could also assist conservation by acting as a “flagship species”.

2.) People may be excited to see a formerly extinct species, and are more willing to engage in conservation.

3.) At the same time, extinct species could also reinforce the preservation and protection of natural habitats.

1. a polysaccharide-based substance that forms the exoskeleton of arthropods.( larva )
 2. an early stage in the development of an animal or plant
(hydroskeleton)  
3. the period of time offspring is carried in the womb before birth
(chitin)
  4. gamete-producing organ in animals
(gonad)
  5. support and movement structure of animals that is maintained by water or body fluid (gestation period)
  6. an early growth stage or phase of life of an organism that undergoes metamorphosis
(embryo)

Answers

#1 is chitin. #2 is Embryo. #3 is Gestration Period. #4 is Gonad. #5 is Hydroskeleten. #6 is Larva.

Answer:

a polysaccharide-based substance that forms the exoskeleton of arthropods

(chitin)

an early stage in the development of an animal or plant

(embryo)

the period of time offspring is carried in the womb before birth

(gestation period)

gamete-producing organ in animals

(gonad)

support and movement structure of animals that is maintained by water or body fluid

(hydroskeleton)

an early growth stage or phase of life of an organism that undergoes metamorphosis

(larva)

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