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yuradex [85]
3 years ago
13

Please help, i need these note for my major test. PLEASEE

Biology
1 answer:
Fofino [41]3 years ago
5 0
What do you need help with doesn’t show?
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Explain how fossil evidence and transitional fossils supports the idea that organisms change over time. Plz help!!!
tamaranim1 [39]
If there’s a all above answer on it it’s all of them
8 0
3 years ago
Imagine that a researcher is studying a population of nerve cells known as the neural crest. In mice, when these cells fail to f
Svetlanka [38]
<h2>Neural crest </h2>

Explanation:

The neural crest likely forms: neurons and glia of the peripheral nervous system

  • The neural crest are bilaterally paired strips of cells arising in the ectoderm at the margins of the neural tube
  • In the body region, neural crest cells also contribute the peripheral nervous system (both neurons and glia) consisting of sensory ganglia (dorsal root ganglia), sympathetic and parasympathetic ganglia and neural plexuses within specific tissues/organs
  • The nervous system is made up of specialized cells which includes nerve cells (or neurons) and glial cells (or glia)
  • Neurons are the basic functional units of the nervous system, and they generate electrical signals called action potentials, which allow them to quickly transmit information over long distances
  • Glia are also essential to nervous system function, but they work mostly by supporting the neurons
7 0
3 years ago
Electromagnetic waves differ in
nlexa [21]
I think the answer is b. wavelength (:
4 0
3 years ago
An animal that is endothermic and homoeothermic A. uses metabolic energy to regulate its body temperature and maintains a relati
rusak2 [61]

Answer: The correct option is A (uses metabolic energy to regulate its body temperature and maintains a relatively constant body temperature).

Explanation:

HOMOEOTHERMIC animals are also called endothermic animals. They are the warm blooded animals which uses heat energy generated metabolically to regulate and maintain a relatively constant body temperature. Examples of animals that are endothermic include the birds and mammals.

The temperature which they maintain is deep inside the body and not the skin temperature.

Also the temperature of a body is affected by the heat it gains and losses. The body gains heat mainly:

--> by absorbing it from its surroundings

--> from the heat released during the catabolic reaction that occur all the time in the body cells.

--> by conduction, convection and radiation from the surface of the body

--> through evaporation, especially of sweat and

--> in the air that is exhaled and urine that leaves the body.

Under normal circumstances, the heat the body gains is balanced by the heat it loses. A RISE in body temperature stimulates the following processes to get rid of excess body heat:

--> A decrease in metabolic rate: the body slows down its activities to decrease the metabolic rate. This reduces the heat released by metabolic reactions, hence minimizing heat production within the body.

A FALL in body temperature stimulates the following processes to produce and conserve heat:

--> increasing metabolic rate: The body increases its metabolic rate, especially that of the liver, to produce more heat

7 0
2 years ago
Answers to definition
AlladinOne [14]

Answer:

Explanation:

Species: a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.

Population: a particular group or type of people or animals living in a place.

Gene pool: the stock of different genes in an interbreeding population.

Mutations: the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA, or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.

Lateral Gene Transfer: the movement of genetic material between unicellular and/or multicellular organisms other than by the transmission of DNA from parent to offspring (reproduction).

Single-gene Traits: when a trait is linked to one gene-pair that consists of two alleles.

Polygenic Traits: is one whose phenotype is influenced by more than one gene.

3 0
3 years ago
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