Why does mitochondria and chloroplast are considered as ancestors of representative eukaryotic cells, particularly plant and animal cell?

Q: Type answer please (this is about plants btw) information about plants responses to light outside ph...

A: Photoperiodism It has been observed that some plants require periodic exposure to light to induce fl...

Q: answer the question. The bombardier beetle is spraying a boiling hot liquid that contains irritating...

A: Introduction: Beetle is considered to be the gardener's friend and it is a fearsome predator as it c...

Q: Explain gastrulation in fish

A: Gastrulation in Fish: - Gastrulation is defined as a process in which gastrula is formed from a blas...

Q: Distinguish between polyploidy and aneuploidy

A: A chromosome is a tiny thread-like structure found in the nucleus of eukaryotic cells (animal and pl...

Q: 2. Draw a Punnett square of a cross between a homozygous dominant individual and a heterozygous indi...

A: Answer 1: -  Parent individuals: - BB (homozygous dominant), Bb(heterozygous dominant) Cross: -  ...

Q: What changes in the structure of each polysaccharide affect its gelling property?

A: Gels are solid and jelly-like materials formed from colloid polysaccharides, polymers and proteins. 

Q: "Which of the following would most likely result from placing cold water in the left external acoust...

A: Nystagmus is a rapid, side-to-side involuntary eye movement caused by a change in the temperature of...

Q: What changes in the structure of each polysaccharide affect its gelling property? Explain in five se...

A: The gelation occurs in polysaccharide (they form it) because of the formation of intra- and inter-mo...

Q: State a specific domestic crop and show the evolution with explanation.

A: Crop evolution has followed a multifaceted line of trends as explained below. Wheat is one such dome...

Q: explain why we feel headache when we woke up late and not eating a breakfast before going to school.

A: *carbohydrate metabolism is s chemical process that supplies continuous energy to cells. * The major...

Q: Human Karyotype B (questions #7 to #12) 7. The diploid number is 46. 8. The haploid number is 23 onl...

A: Karyotype: A karyotype is a collection of all metaphase chromosomes in a species' or individual orga...

Q: Four E. coli strains of genotype atb¯ are labeled 1, 2, 3, and 4. Four strains of genotype a¯b* are ...

A:

Q: embryological explanation why The dorsal mesocardium is a ventral mesentery

A: Mesentery: The mesentery is a human organ that connects the intestines to the posterior abdominal wa...

Q: At each origin of replication, DNA synthesis proceeds bidirectionally from two replication forks. Wh...

A: Introduction The process of replicating a double-stranded DNA molecule into two identical DNA molecu...

Q: What are plankton, nekton and benthos?

A: Introduction Thereare three types of aquatic living organisms that can be classified as plankton, ne...

Q: What is the role of social justice in social workers?

A: When actions are taken that infringe on a group's rights, minimize their opportunities, or treat the...

Q: A breeder performed a testcross to find out if his male dog was a purebred black. He got one brown p...

A: Introduction :- An experimental hybrid between an individual organism with a dominant phenotype but ...

Q: The dinosaurs died out______ million years ago

A: Introduction:- Dinosaurs are a diversified group of reptiles that dominated Earth's terrestrial life...

Q: Evolution______ . a. is change in a line of descent b. is the same as natural selection c. is the go...

A: Different patterns are associated with evolution and such patterns help in categorizing evolution in...

Q: Which part of the nervous system is in charge of the "fight or flight" response? O automatic nervous...

A: Nervous system is defined as the network of neurons and fibres present in the body. It regulates the...

Q: Can the amount of available energy on a given trophic level be larger than the available energy on l...

A: Answer 

Q: Suppose a population has two alleles at a particular locus, and individuals with different diploid g...

A: Hardy Weinberg’s principle is the mathematical representation of population analysis which calculate...

Q: What is the difference between a mesoderm and a mesoglea?

A:     Diploblastic animals contain body wall which develop from 2 embryonic germ layer - ectoderm and ...

Q: O proprioceptor O photoreceptor O mechanoreceptor O chemoreceptor

A:

Q: Which of the following is true regarding the medial vestibulospinal pathway? O a. It functions in th...

A: The medial vestibulospinal pathway: It is made up of axons originating from medial and inferior nucl...

Q: Miguel went to the dentist, who performed a procedure that eliminated his tooth pain. The next time ...

A: Answer :- In given case , the consequence for Miguel is negative reinforcement.

Q: The number of species on an island depends on the size of the island and its distance from a mainlan...

A: Species are groups of organisms that can interbreed and produce fertile progeny.  

Q: 21. What are two ways by which SARS-CoV-2 disguises itself from detection by its host-cell's immune ...

A: SARS CoV 2 is a RNA virus, members of large family of virus called corona virus. This virus mainly i...

Q: (a)Describe the characteristic and features of a nerve cell observed under high power objective in m...

A: Nerve cells, also known as a neurons, are the active component of the nervous system. Neurons commun...

Q: The two categories of stem cells in the human body are embryonic stem cells and adult stem cells. Th...

A: All the the answer choices are correct.

Q: One of the causes of morbidity for the Zika Virus is Guillain-Barré Syndrome, an immune attack of ne...

A: Zika virus has family - flaviviridae.  This virus spreds with the help of aedes mosquitoes. They nam...

Q: Match the fossil hominin with is most accurate description; not all hominids will be used.   Questi...

A: Fossil hominids: these are the extinct ancestors of genus Homo. 

Q: There are two types of alleles: Type B1 and Type B2 (In total there are 10) Type B1 has 6 Type B2 ha...

A: Introduction : Here,  B1 allele = p = homogygous dominant allele              B2 allele = q = homogy...

Q: As coral reef communities continue to experience ocean acidification and bleaching, a population of ...

A: There are many reasons for decline in coral reef communities. The first and foremost being the human...

Q: How do geneticist normally tell whether an organism exhibiting a dominant phenotype is homozygous or...

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous c...

Q: Can the amount of available energy on a given trophic level be larger than the available energy on l...

A: The number of steps an organism has taken from the beginning of the food chain determines its trophi...

Q: In a diploid cell in which 2n = 14, how many telomeresare there in each of the following phases of t...

A: The process involved in the generation of daughter cells from parent cell can be described as cell d...

Q: What is the biggest reason we use animals in research? a. Animals have simple behavior that makes it...

A: Animals are used in research because they are less complex, have high reproductive rates, and are ea...

Q: . In corn, three dominant alleles, called A, C, and R,must be present to produce colored seeds. Geno...

A: The term genotype is associated with the genes present in an individual. The expression of genotypes...

Q: What is cohesive ends (or “sticky” ends) ?

A: Restriction endonucleases are the enzymes that cut the DNA within a specific sequence.

Q: In Figure 7-23(a), label all the leading and laggingstrands.

A: Introduction  DNA replication is very crucial for the continuation of life as every new daughter cel...

Q: Which of the following statements accurately describes the pattern of recruitment in a muscle when p...

A: The contraction of muscle is responsible for the development of muscle movement. The generation of s...

Q: What are structures 6 and 7? This is the leaf anatomy of Zea mays

A: Zea Mays is isobilateral leaf. Also called as maize. 

Q: During which decade were there the most contributions leading to the understanding of DNA?

A: Rosalind Franklin made an essential commitment to the revelation of the twofold helix design of DNA,...

Q: Describe safety measures put in place for genetic modification.

A: The Food and Drug Administration (FDA), Environmental Protection Agency (EPA), and Department of Agr...

Q: Most flour beetles are black, but several color variants are known. Crosses of pure-breeding parents...

A: Introduction The first filial generation is the F1 generation, and the second filial generation is t...

Q: The process in which environmental pressures result in the differential survival and reproduction of...

A: Introduction  Evolution is the key process that regulates the survivability and continuity of specie...

Q: For fruit flies, N=4 and 2N=8 a. Sketch a dividing fruit fly cell which is in prophase I. b. Sketch ...

A: NOTE: Since you have asked multiple questions So we will solve the first par for you. as per our com...

Q: Explain how early genetic screening can help a baby.

A: Genetics screening is a procedure in which the whole genetic makeup of an individual is tested. This...

Q: Which of the following steps amplify the epinephrine signal response in cells: receptor activation o...

A: Protein kinase A (PKA) is a well-known kinase that is involved in a wide range of biological process...

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.