Please I need this ASAP identify and describe three examples of internal and external factors that regulate cell division

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Answer 1

Answer:

Answer:

External factors include physical and chemical signals. Growth factors are proteins that stimulate cell division. – Most mammal cells form a single layer in a culture dish and stop dividing once they touch other cells. Two of the most important internal factors are kinases and cyclins..

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In a certain ecosystem, the number of cheetahs is lower as compared to their prey, gazelles. If the cheetahs disappeared from this ecosystem, then the number of gazelles will increase. This will disrupt the ecosystem of the forest because the gazelles will compete for limited food resources and possibly exhaust them. In this scenario, what type of species are cheetahs?

What is the difference between bioengineered crops and genetically modified crops?

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Basically bioengineered crops are created through natural cross-pollination , which mean that we did arrange the cross-pollination but we did not mess u with its DNA

Meanwhile, genetically modified crops are created through addition and deletion of DNA , which mean that we directly intervene with its DNA

What element has fewer valence electrons than magnesium

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Any element in the first column of the periodic table. Hydrogen, lithium, sodium, and potassium are a few examples

Characteristics of animal cells include which of the following? Select all that apply. no cell wall, only plasma membrane

large hypertonic vacuole

no chlorophyll or chloroplasts

cell plate in cell division

cleavage furrow

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Primarily, the properties exhibited by animal cells are:
No cell wall, only plasma membrane (cell walls are a property of plant cells)
No chlorophyll or chloroplasts (animals do not photosynthesize so do not have these organelles)
Cleavage furrow (exhibited during cell replication)

Answer:

no cell wall, only plasma membrane

cleavage furrow

Explanation:

The animal cells are different from the plant cells in many ways. The specific characteristic features of the animal cell include the absence of the cell wall, and the formation of the cleavage furrow during the cell division.

The animal cells only have plasma membrane around them. No large hypertonic vacuole is present. The chlorophyll and chloroplasts are present in the plant cells and not in the animal cells. The cell plate is formed in the plant cells during the cell division. In the animals, a cleavage furrow is formed instead of the cell plate.

Which type of sensory receptor is responsible for smell and taste?

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Chemoreceptors are responsible for smell and taste

Between 6 and 7 million years ago, the lineage that led to hominins split from the lineage that led to chimpanzees. Which of the following best describes one of the ways that hominins evolved? A. Hominins evolved a smaller skull and smaller brain capable of designing tools. B. Hominins evolved an opposable thumb that enabled hands to grasp objects. C. Hominins evolved shoulder bones that enabled them to walk faster on all four limbs. D. Hominins evolved more chromosomes that enabled them to reason and solve problems.

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Answer:

B. Hominins evolved an opposable thumb that enabled hands to grasp objects.

Explanation:

Prehistoric hominids evolved opposable thumbs earlier than bipedal walking. The opposable thumbs have been critical during evolution because this position enables the digits to grasp and handle objects.

In which zone are most producers found?

Answers

Sunlit Ocean is the zone

Most found in the sunlit (euphotic) zone of the ocean

I hope that's help !

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Which statement best describes an understanding of genetics that would be missing without the work of Mendel?a. The DNA codes for traits would not be known. b. The protein codes for traits would not be known. c. Some alleles are dominant, and some alleles are recessive. d. Offspring receive two copies of each allele from each parent.

In the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of years as a result?A.The chances for survival of the population are reduced. B.New food sources are discovered and become the regular diet. C.Individuals that are well suited to the environment reproduce, and those that have lesser adaptations die before they reproduce. D.The environment adapts by providing more resources to the growing population, increasing the chances of survival for individuals within the habitat.