Enumerate at least three evidences to support the occurence of primary and secondary endosymbiosis in some groups of eukaryotes.

Q: LIN-31 function upstream or downstream of the LET-23 receptor in the vulval development pathway

A: * vulval development is an example of organogenesis. * This organ is that the  connection between he...

Q: How is an extracellular signal converted to an intracellular signal in signal transduction? Give a s...

A: Signal transduction is a process in cell signaling.

Q: 1.) Chromosome images are obtained from any cell type that has a nucleus. 2.) Chromosomes can be ob...

A: Given: In humans, each cell contains 23 pair of chromosomes, a total of 46 chromosomes. Out of them,...

Q: If humans evolved from apes, why are there still apes?

A: Primates are organisms with five grasping digits, opposable thumb, and front located eyes on the hea...

Q: A woman afflicted with a certain illness marries a normal man. They have four children (two boys and...

A: Pedigree is a chart represents family tree which displays members of a family who are affected by ge...

Q: Eggs subjected to an isotonic solution will have a measured circumference that

A: Introduction: Isotonic solution:Two solutions with the same osmotic pressure over a semipermeable me...

Q: IDENTIFY the label of the sea urchin's TESTIS as to what CELLS are being pointed at. Please make sur...

A: Nutritive phagocytes are somatic cells that provide nutrition to the germ cells through the entire g...

Q: not changed for this patient and explain your reasoning. 1. Inspiratory reserve volume 2. Expiratory...

A: There are lots of skeletal muscles involved in the breathing process. Breathing process involves inh...

Q: What is DNA methylation? When we say that DNA methylation is heritable, what do we mean? How is it p...

A: DNA methylation is a process of the addition of methyl groups to the DNA molecule that alters the fu...

Q: 1. A nondisjunction is a rare event during meiotic division wherein the homologous chromosomes fail ...

A: The "cell cycle", also known as "cell division", is a set of processes that occur in a cell leading ...

Q: Answer the following questions: If a corn grain is actually a fruit, where is the pericarp? Does a ...

A: Corn or maize is the most commonly eaten cereal which is a bunch of kernels or seeds.  Fruits are de...

Q: In peas, grey seed color (G) is dominant to green (g). The following data were collected. Indicate t...

A: a. Gg b. GG or Gg   Explaination- a.  When two grey seed colored parents are crossed, 59 grey and 20...

Q: What kind of bond is created between successive amino acids in a protein? If there are more codon co...

A: Proteins are made up of chemical 'building blocks' called amino acids. Nucleotide is the basic build...

Q: Describe the characteristics of populations that help predict population growth

A: In ecology field, the study of living organisms takes place at different levels. The population term...

Q: What is the function of the setae? 2. What is the function of the openings at segment number 14?

A: The body of the earthworm is segmented and each segment has a number of bristly hair-like appearance...

Q: extensive and severe scar tissue in their lungs. 1. Define compliance. 2. Would coal miners have hig...

A: 1.. ans   Complications  is such the, airflow obstruction, respiratory tract infection & informa...

Q: 8 QUESTION: Transcribe the gene. Write out the correct sequence of mRNA bases. Notice that this is t...

A: Transcription is the synthesis of RNA from DNA segment with the help of RNA polymerase enzyme. It ta...

Q: An analysis of an octopus’s DNA determines that the nitrogen base thymine makes up 18 percent of the...

A: Introduction  DNA has four nitrogen bases -  Adenine  Guanine  Thymine  Cytosine  Chargaff's rule ...

Q: Calculate the change in osmolarity and the volume of extracellular and intracellular fluid when a hy...

A: Osmolarity is concentration of active particles in a solution. 

Q: Do you think circumcision should be illegal?

A: Circumcision is a surgical procedure that includes removal of foreskin of penis. 

Q: What are the possible abnormal gametes the male can produce with non-disjunction occurring in Meiosi...

A: When nondisjunction occurs at the end of meiosis II it will result into 50% normal gametes. the poss...

Q: Gram-negative nitrogen-fixing bacteria found in association with plant roots are deeply branchin...

A: Alphaproteobacteria. (Rhizobium)

Q: What is meiosis

A: Meiosis, also known as reduction division, is the division of a germ cell that involves two nucleolu...

Q: Why do we usually express crude birth and death rates per thousand people? Why not give the numbers ...

A: 1. The crude birth rate and crude death rate are both measured by the rate of births or deaths respe...

Q: effect of malaria on the frequency of the HbS allele in areas where malaria is common:In areas with ...

A:

Q: Consider the 5 tasks necessary for cell survival that you learned about in Activity 2. Pick ONE task...

A: Cell survival is the function that requires the least amount of GM-CSF and hence receptor occupancy,...

Q: The image shows the karyotype of someone suffering from Patau syndrome. 2 3 4 5 6 7 8 10 11 12 13 14...

A: Answer b- chromosome set 13. In This karyotype there is an extra copy of chromosome 13. 

Q: Based on what you have learned about metabolic regulation, how might fructose- 1,6-bisphosphate and/...

A: Introduction  Carbohydrates are the most common source of energy they can be classified as monosacch...

Q: Self-check Direction: Answer the questions and write your explanations on the answer sheet provie 1....

A: Since you have posted a question with multi- sub parts , we will solve first three sub-parts for you...

Q: Is there a Hardy-Weinberg equilibrium in the population?

A: The Hardy-Weinberg formulas are used to tell whether evolution has happened in the population or not...

Q: n yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose wh...

A: Telomerase is an RNA-directed DNA polymerase that replicates the telomere ends of linear eukaryotic ...

Q: Describe the phenotype of individuals who inherit two copies of the HbS allele-Sickle Cell Disease.

A: Sickle cell anemia  It is a genetic disorder that affects erythrocytes(RBC) causing them to become s...

Q: MAKE A INTRODUCTION PART ABOUT THE COMMUNICABLE DISEASE INVOLVING THE EYE

A: Communicable diseases are diseases that can pass from person to person. it spreads from one person t...

Q: Explain the function of the Golgi apparatus

A: This single membrane bound smooth surfaced stack of cytoplasmic tubules and vesicles, concerned with...

Q: How to stay mentally healthy, Ways to improve brain functions, and ways to communicate and manage em...

A: Mental health is very important in todays world. One should monitor its mental health on regular bas...

Q: Most adjacent plant cells are connected by plasmodesmata, whereas only certain adjacent animal cells...

A: Gap junctions are a type of connections present between the animal cells.

Q: Describe the structure of DNA. The two strands of DNA are antiparallel. What does the term antiparal...

A: DNA contains all of an organism's order for growth, survival, and reproduction. DNA sequences must b...

Q: Which of the following bacteria oxidize nitrite (NO2-) to produce nitrate (NO3-)?   Azospirillum Cya...

A: In the nitrogen cycle, when dead plants and animals decompose organic nitrogen is converted into amm...

Q: Which of the following is NOT true about glycolytic fast-twitch cells? A. They are only found in inv...

A: Option A is not true

Q: Help answer. Describe the components and process and explain how the process is occurring. Help answ...

A: The immune system is a complicated physiological system comprised of several organs, tissues, and ce...

Q: What is the role of genes and chromosomes in the process of inheriting a specific trait?

A: Chromosome contains gene and Genes basically have the genetic information which get inherited from p...

Q: An animal cell lacks a cell wall, yet it still maintains its shape and has all its internal componen...

A: Cell is chief elemental unit of the body which consists of various cellular components and allow met...

Q: Find the hash mark indicating the origin of jaws. Which group or groups of vertebrates possess jaws?...

A: Vertebrates are the chordates that have a vertebral column. 

Q: Kai Sotto is 2.18m tall and weights 105kg. Prepare high-protein diet for him with 1.2 g per K B W. C...

A: Kai Sotto :  Body description : Tall - 2.18 m. Weight - 105 kg. Profession - Basketball player. Nat...

Q: which signal serves a similar function as the Shine-Dalgarno Sequence in prokaryotes?   A. The pro...

A: The Shine–Dalgarno sequence is a ribosomal binding site in prokaryotic mRNA, generally located aroun...

Q: Answer the following questions: What advantages do flowers give angiosperms over gymnosperms? Descr...

A: Answer 1: - Flowering plants have an advantage in reproduction over usual gymnosperms because of the...

Q: Most botanicals that treat the skin are topical or taken orally. What layer of skin does a topical b...

A: Option 4 i.e. all layers of skin are affected by a topical botanical.

Q: Is the Down syndrome inherited through Mendelian patters? If not how it is inherited?

A:

Q: What are 20 vegetable and field crops grown in Jamaica?

A:

Q: Direction: Study the given series of events below. Arrange the sequence of the following events in c...

A:

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.