A human sperm or a human egg each have how many chromosomes?

Q: Which of the following is a connective tissue that attaches muscle to bone? a endoskeleton b…

A: Connective tissues are most abundant and widely distributed in the body of complex animals. Their…

Q: So how and why did Charles Darwin come to develop his ground-breaking Theory of Evolution?

A:

Q: Q4.3. The DNA in a cell is intact and functional, but something in the cell's DNA replication…

A: The DNA is the genetic material in living cells. DNA replication is a process by which a…

Q: 10 Which of the following would be a case of evolutionary migration (gene flow)? A. Warblers of a…

A:

Q: Consider a transmembrane protein that forms a hydrophilic pore across the plasma membrane of a…

A: Membranes are composed of a hydrophobic core of phospholipid tails.

Q: explain how timed species counts are used to document bird communities distribution

A: The timed species count is defined as a specific number of birds that are counted during a set…

Q: 15. In which of the following forms is energy immediately made available for the use of living…

A: Each body cells need energy in order to perform various body or metabolic functions. The energy can…

Q: Explain the termination of prokaryotic transcription.

A: The flow of genetic information in a biological system is explained by central dogma and it involves…

Q: explain as precisely as you can but in no more than 100 words the ionic basis of an action potential…

A: Introduction :- An action potential (AP) occurs in physiology when the membrane potential of a…

Q: Some scientists suggest that the Neanderthals and possibly Denisovans, never went extinct, but…

A: Introduction About half a million years ago, modern humans, or Homo sapiens, and Neanderthals shared…

Q: The second law of thermodynamics uses S H G T put them in order and correct way and mention what…

A: Thermodynamics is the branch of science that deals with the relationship between heat and other…

Q: What's the importance of objective and ocular magnification in observing a specimen under a…

A: A microscope is an instrument that magnifies an object so that it may be seen by the observer.…

Q: Class: Genus: Common Name: Class: Genus: Common Name:

A: Mollusca, after Arthropoda, is the second-largest phylum of invertebrate organisms, with molluscs or…

Q: Arthritis diseases are due to: in the veins is lower than in the arteries. When a person stands…

A: Arthritis  It is a common condition that affects the joints. This illness causes joint pain and…

Q: Consider this cross before answering the following questions:  A pea plant heterozygous for the…

A: Alleles are the alternative form of a gene that are located on the same locus of Homologous…

Q: Identify the incorrect statement regarding NKT cells. (Select all that apply.) a. They express α:β…

A: NK cells play an important role in the innate immune response to primary infection, as well as…

Q: If an individual is diagnosed with multiple karyotypes, they are called? Choose from the options in…

A: The complete set of chromosomes of an individual is called karyotype. It is usually arranged in…

Q: quest below. 1. What organ(structure) is shown in the figure? 2. What is the name of the tissue (the…

A: Organs are composed of two or more different types of tissues.

Q: Identify and label the parts of the following specimens of Phylum Platyhelminthes:

A: It is critical to learn and know the anatomy and physiology of the body. Many changes in the animal…

Q: To determine: Whether the nonspecific or the specific arms of the immune response evolved first in…

A: Immunity refers to the ability of leukocytes or antibodies to resist infection. A vaccination is a…

Q: * Chemical waste is considered hazardous if it has one of the following properties except: Flammable…

A: Chemical waste is considered hazardous if it has one of the following properties except: ?

Q: the way in which bone marrow transplantation can lead to therapeutic effects.

A: Bones are state defined that they are provide support and protection to the body and its organs.…

Q: What will be the result if we resequence the same samples contributed to the reference genome and…

A: Many hereditary disorders may now be tested for through "genetic testing". Some diseases,…

Q: In what way did the followers of Galen disregard his advice? How does Galen’s advice apply to you…

A: Introduction  Dissection is the dissection of a deceased animal or plant's body in order to analyse…

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A: Photosynthesis Phosysnthesiis is a process by which plants synthesise their food. It occurs in the…

Q: What are the major ecosystems of the world? Describe forest and pond ecosystems in detail

A: Ecosystem  A geographical area in which plants, animals, & other species, as well as weather…

Q: Ti Vector Plasmid Hfr HIV Bacteriophage

A: Introduction: In molecular biology, a vector is a DNA molecule (usually plasmid or virus) that is…

Q: The role of fungi in the production of cheese, wine, beer, and bread.

A:

Q: 447 Ja 4H+ Ţ 24+ 3H+

A: There two types of respiration in living organism one which is aerobic respiration ( in the presence…

Q: During the process of anaerobic cellular respiration, the final electron accepter in the electron…

A: Anaerobic respiration is the respiration process similar to aerobic respiration but it does not use…

Q: To determine: Whether the nonspecific or the specific arms of the immune response evolved first in…

A: Introduction: Innate defense and adaptive defense are two body mechanisms that protect against…

Q: Answer the questions in the frame below. 1. What organ(structure) is shown in the figure? 2. What is…

A: Introduction: Blood arteries are made up of concentric layers or "tunics" of distinct tissue types,…

Q: Without oxygen, the inside of the cell becomes: 1) isotonic 2) hypertonic 3) hypotonic

A: Isotonic - when the concentration of the solute is same in outside and inside of the cell.…

Q: In the diagram below show which steps represent oxidation and which steps represent reduction. Also…

A: Photosynthesis Photosynthesis is a process by which plants synthesise their food (sugars) using…

Q: Which complex organic molecules were synthesized in Miller's experiment? ► View Available Hint(s) O…

A: Miller experiment was performed by Stanley J. Miller in 1953. He was a graduate student of Harold C.

Q: Q11-The internal sphincter control for flow of urin is

A: Urine is a liquid by-product.  Urine flows from the kidneys through the ureters to the urinary…

Q: Given that the gene for the color-blind condition is recessive and X-linked. You have a female with…

A: Maternal parent has a nondisjunction at Meiosis1 or 2

Q: 7 Use the following images to answer the next two questions. 5 6 Stage 8 in the diagram above is…

A: The given diagram illustrates cell division. There are two types of cell division - mitosis and…

Q: Match the hormone with the observation. ___ ethylene                   a. Your cabbage plants form…

A: Introduction  Plant hormones are chemical compounds found in plants at extremely low concentrations.…

Q: Please compare the design and operation of a protein precipitation unit to that of a chromatography…

A: Protein precipitation is a process in which proteins are removed from solution by the addition of…

Q: 10. The electron transport chain requires energy to synthesize ATP, this energy is derived from A…

A: Introduction  An electron transport chain is a series of protein complexes and other molecules that…

Q: When testing the effect of substrate concentration on the reaction rate, there comes a point at…

A: Enzyme-substrate reaction Enzymes are the biological catalysts that increase the rate of reactions.…

Q: Does glucagon speed up the reaction of F2-6-BP to F-6-P

A: The hormone is produced by the alpha cells of pancreatic islets of Langerhans. It is responsible for…

Q: We use salting and freezing to preserve our food against bacteria. Explain why is food preserved…

A: Salting: Common salt (NaCl) used to preserve food by making it unavailable for microorganisms.…

Q: Describe a variety of organic compounds present in living organisms, and explain their importance to…

A: Because of their relationship with organisms and the fact that they include carbon, the chemical…

Q: 1. Which statement about fats is true?  a. Unsaturated fats are most common in animal tissues?  b.…

A: Fats and lipids are essential organic macromolecules. The plasma membrane of each cell is made up of…

Q: If B cells making high-affinity IgG4 are unable to switch to IgE at a late stage in the germinal…

A: Helminths are parasites that cause several infections.

Q: Use the following diagram to answers the questions. A. Is this cell Gram + or Gram -? Provide 2…

A: Bacteria are a broad collection of tiny, unicellular creatures that have been classed as prokaryotic…

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.