What is the function of the filtration step in excretory systems?

Q: Describe an example from the fossil record that showshow life has changed over time.

A: Evolution is the process of heritable change in the characteristics of an organism. Such changes bec...

Q: A molecule that donates electrons becomes.........., and the one that accepts the electron becomes.....

A: Chemistry is a branch of science that deals with the substances of which matter is composed, investi...

Q: A patient presents typical symptoms of pneumonia: cough, fever, and difficulty breathing. Would this...

A: The "germ theory of disease" has presented a great advancement in Microbiology and Medicine. The eti...

Q: Why areKoch’s postulates still relevant today?

A: Micro-organism are tiny organisms that cannot be seen by the naked eye, but are visible under micros...

Q: What are the components of a ribosome? What functional rolesdoes rRNA play in protein synthesis?

A: Protein synthesis is a process of generating new protein sequences inside the cell. This process tak...

Q: Explain how antibody diversity is generated in vertebrates.

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of...

Q: Compare the relative lengths and paths of the uterine tubes (oviducts) of the fetal pig and the huma...

A: The oviduct is a part of the female reproductive system that provides a passage for the ovum to pass...

Q: A molecule of water is formed when one atom of oxygen is covalently bonded with two atoms of hydroge...

A: Covalent bonds are formed by sharing of electrons. In the water molecule, there are two covalent bon...

Q: Give an example of a hypothesis that you will test to answer the research lab?   In this lab you wil...

A: The enzyme catalase that is found in the potato cells to break down the hydrogen peroxide into oxyge...

Q: Give the exact location and one function of lacrymal gland.

A: It is the exocrine gland. They are present in pairs.

Q: What are the actions of these hormones: GH, TSH, FSH, LH, and PRl?

A: Hormones are chemical Messengers which are secreted directly into the blood.Blood carries them to or...

Q: Describe the “blender experiments” of Hershey and Chase and what they revealed about DNA versus prot...

A: The blender experiment performed by Hershey and Chase proved that the deoxyribonucleic acid (DNA) is...

Q: Differentiate between myopia and hypermetropia on the basis of cause of the defect.

A: The eye is an organ that forms an image from the light rays. Any kind of defect makes the vision blu...

Q: What types of cells are located in the Langerhans islet?

A: Islets of Langerhans  are group of cells located within the pancreas. These cells are primarily resp...

Q: What affect one or just a few base pairs in the DNA and thus alter only one gene at a time?

A: DNA (deoxyribonucleic acid) is a macromolecule that functions as the genetic material. It contains g...

Q: What are the function of filament,hook and basal body?

A: Introduction  Bacteria contains a special motility organ referred as Flagella (plural), flagellum (s...

Q: Chlorine is an element with the symbol Cl. Draw and label atomic structure of chlorine indicating th...

A: ATOMIC STRUCTURE  The Atoms consist of three basic particles: Protons Electrons Neutrons The nucle...

Q: What is preimplantation genetic diagnosis?

A: Prenatal diagnosis is performed for the identification of genetic diseases and their predisposition ...

Q: To identify a positive control in your lab report, should you list any test tube with positive resul...

A: A negative control is a group of experiment performed in the lab that is not expected to have any ef...

Q: the ability to carry out biochemical reactions is?

A: A biochemical reaction is such a chemical reaction that requires a specific biological catalyst call...

Q: Compare and contrast ferric iron reduction withreductive dechlorination in terms of (1) product of t...

A: Besides inorganic nitrogen, carbon dioxide as well as the sulfur compounds, many other substances ca...

Q: Directions Write in a COMPLETE Sentence a description of the “faux wound” that is located at the su...

A: Skeletal muscles run from one bone to another, usually passing at least one joint. They are connecte...

Q: Red–green color blindness in humans is due to an X-linked recessive gene. A woman whose father is co...

A: Color blindness is a genetic disorder which passes onto offspring from parents. Red/green color blin...

Q: What are THREE indications of a high coliform counts in a food product?

A: The coliform count is an indicator of hygiene and a high level of coliform generally depicts unsanit...

Q: Technology leads to Discovery & Microscopy. Map the process of Dr. Warren's discovery of bacteria (n...

A:   Magnification refers to the process by which an object or microbe can be seen by enlarging its ima...

Q: Read this passage from Chronicle of the Narvaez Expedition by Alvár Nuñez Cabeza De Vaca and answer ...

A: Osmotic pressure is caused due to concentration differences between solution separated by a semiperm...

Q: The period between meiosis I and meiosis II is called interphase II.Does DNA replication take place ...

A: DNA replication is a complex process in which DNA makes an exact copy of itself. It takes place in t...

Q: Individuals with trisomy 21 are more likely to survive to adulthood than individuals with trisomy 18...

A: Chromosomes are string like structures situated inside the core of creature and plant cells. Every c...

Q: How is it possible  for certain organisms  to grow and  thrive in the prescence of cyanide?

A: Most organisms need nutrients for energy, water to stay hydrated, and a place to grow that meets the...

Q: Provide an example of how or whether this vision feedback may be used in a sport/exercise interventi...

A: Visual feedback in sport can be anything from a video of the athlete performing a task, a marker of ...

Q: Review negative back mechanism in the endocrine system

A:   The endocrine system commands and coordinates the complex actions of the body by secreting chemica...

Q: What is the powerhouse of the cell?

A: Powerhouse of the cell means it is related to energy producing cell organelle of the cell. So we nee...

Q: Name the hormones released by the Posterior Pituitary gland and their actions.

A: Hormones are the chemical messengers of our body that circulates in the blood stream and transmit si...

Q: Outline the steps in DNase I footprinting, and analyze the results.

A: DNase I footprinting is assy that is used to identify the specific sites for DNA binding proteins.  ...

Q: During an Ames test, bacteria were exposed to a potential mutagen.Also, as a control, another sample...

A: Ames test is a method that uses bacterial cells to test whether a chemical can produce mutations in ...

Q: A geneticist is trying to determine how many genes are found in a 300,000-bp region of DNA. Analysis...

A: Deoxyribonucleic acid (DNA) is the genetic material. Nucleosome is the packaging unit in eukaryotes,...

Q: You have been provided with stock solutions of: stock A:     0.06 M sodium pyrophosphate buffer pH 8...

A: Buffer preparation fro stock solution: The formula used for buffer preparation from stock solution i...

Q: you had to dispore tissue and towels from dissection? you had to dicard dispoable microscope slide  ...

A: The dissection is the process of dismembering the body of a deceased animal or plant for studying th...

Q: What the gap between two neurons is called?

A: The neuron is also known as the nerve cell, the main component of the neural system. The millions an...

Q: What tissue would logically contain cells with large amounts of rough ER and smooth ER?

A: Endoplasmic reticulum (ER), are a continuous membrane system that forms a series of flattened sacs w...

Q: Draw the structure of gymnosperms?

A: Gymnosperms are naked seeded plants, these have exposed ovules on megasporophylls. These plants do n...

Q: Explain about the EPO experiments.

A: Answer: Introduction: EPO means the erythropoietin test used to estimate the amount of a hormone cal...

Q: Why is the left ventricle more muscular than the right ventricle (in heart)? Please write very detai...

A: Heart is one of the vital organs of the body which is responsible for pumping blood to different par...

Q: 6.) How do the percent of calories from each macronutrient group (protein, fat, and carbohydrate) co...

A: Dietary Reference Intakes (DRIs) are a set of reference values used to plan and assess the nutrient ...

Q: How would the presence of incomplete penetrance affect the interpretation of pedigrees? Do you think...

A: A pedigree chart includes the pictorial presentation of family history in the form of a tree from wh...