The ______ houses the heart, lungs, vessels, and lymphatics of the mediastinum. a. ventral cavity b. abdominal cavity c. cranial cavity d. thoracic cavity

Q: Describe the mechanisms of lymph formation, and trace the pathway of lymph circulation through the b...

A: In human many systems are present for the functioning of different organs such as cardiovascular sys...

Q: Which is the smallest of all levels of biological organization?

A: Cell is the smallest of all levels of biological organization. Cell is the basic structural and func...

Q: Refer to the diagram of pUC18 (Fig.) to determine which restrictionenzymes you could use to insert a...

A: An extrachromosomal circular double-strand DNA with a few hundred to thousand base pairs present. pU...

Q: How many cells are in a human body

A: Introduction :- Humans are complex organisms made up of number of cells, each with their own struct...

Q: The presence of trans fats in membranes membrane fluidity (increases or decreases) decrease increase...

A: cell membranes are made of phospholipid molecules , they have fatty acids attached with a phosphate ...

Q: Nervous Tissue 1. Name the two types of cells present in nervous tissue. Describe their function.   ...

A: Nervous tissue is a specialized tissue that is found throughout the body (especially in the brain an...

Q: What is the name of this disorder?

A: The picture is showing the karyotype. Karyotype is the representation of chromosome according to the...

Q: can you help please?

A: Mitosis is the process of cell division in which the cells divide to form two daughter cells. This i...

Q: What component of a reticular fibre makes it PAS-positive?

A: Reticular fiber , it is special subtype of connective tissue that is indistinguishable during routin...

Q: Describe the genetic code and how the nucleotide sequence determines the amino acid and the protein ...

A: Genes are the unit of hereditary which are present in a thousand of numbers on the stand of DNA (deo...

Q: Which line of defense includes active immunity? O first se O third O fourth

A: Active immunity is defined as the immunity gained towards a pathogen after the exposure to that part...

Q: Explain two adaptations of Archaea that have enabled them to survive very extreme environmental cond...

A: Extremophiles are the organisms that are better adapted to live and survive in an environment which ...

Q: 5c) Do you believe that experiments might be useful in determining the adaptive function of the pect...

A: Answer: PECTEN: The pecten is a structure containing bundle of blood vessels. pecten is mostly fou...

Q: Provide an example of a keystone species and describe how it plays out its role.

A: The biotic and abiotic components of a habitat make up the ecosystem. The living organisms of differ...

Q: List two or three features of an earthworm cross section that distinguish the dorsal and ventral sur...

A: The earthworm is an invertebrate that belongs to Phylum Annelida. It has a tubular body plan and pre...

Q: List the general functions of all circulatory systems.

A: Circulatory system or cardiovascular system consists of the heart, blood, arteries and veins, the he...

Q: how to transform a magnification into a scale bar and vice versa.

A: Magnification is a measure of the size of an image compared to the size of the object. Lenses and cu...

Q: new flu strains can arise by a) meiosis b) viral reassortment c) mitosis d) binary fission

A: Answer is b.)  viral reassortment. 

Q: SDS-PAGE. FRAP. thin-layer chromatography. Western blotting. O freeze-fracture microscopy.

A: Protein purification is important for the characterization of the function, structure and interactio...

Q: What are some of the good and bad points about being a clown doctor?

A: Clown doctor is a highly professional individual who work in hospital setting along with doctors to ...

Q: Why would excess water tend to accumulate in Amoeba?

A: Osmosis is the process in which water tends to move from higher concentration to lower concentration...

Q: Why is it important for scientists to repeat the experiments of others?

A: A scientist is defined as a person who will systematically gather and utilizes research and evidence...

Q: Refer to the following figure (first three rows of the periodic table) to answer the questions below...

A: Noble gases These are group 18 elements of the periodic table. They are usually chemically inert. Th...

Q: Describe how motor molecules interact with cytoskeletalelements to produce movement.

A: In eukaryotic cells, the cytoskeleton is the system of filaments or fibers that is present in the cy...

Q: Which type of bond requires an enzyme to break it?

A: Chemical bonds are forces that hold atoms together to make compounds or molecules. Chemical bonds in...

Q: Which of the following describes systematics?a. studies evolutionary relationshipsb. includes taxono...

A: Systematics:             A par aspects of biological universe that deals with the classification of ...

Q: Discuss Presynaptic factors?

A: Neurotransmitters can be defined as the chemical messengers that play the role in transmitting the s...

Q: List the nutrients required by the body, describe the chemical digestion of organic nutrients, and d...

A: The gastrointestinal tract is the point of entry as well as the absorption of nutrients. GI tract in...

Q: How does a capsule allow an organism to establish an infection?

A: Cryptococcus neoformans is a type of fungus which is found in the environment throughout the world. ...

Q: What type of cell division occurs as a megaspore develops into a female gametophyte? Explain.

A: Megasporophyll is the carpel part of angiosperm and divided into 3 portions: ovary, style and stigma...

Q: Explain why the concept of exaptation does not imply that a structure evolves in anticipation of som...

A: Exaptation is processes of evolution in which a character is developed for a specific function but i...

Q: What effect does population growth have on agriculture?

A: This dramatic rise in growth was primarily attributed to a decline in the death rate (faster than th...

Q: What are examples of primary prevention?

A: It is always said prevention is better than cure. Following prevention for certain diseases can help...

Q: Please I need a surely answer and a quicker response

A:

Q: Effect of poor record in radiotherapy

A: Radiotherapy is a cancer treatment that uses high doses of radiation to kill the cancer cells.

Q: According to Figure 2, what is the probability that the next child of couple II.4 and II.5 would hav...

A: Pedigree is defined as a diagram that will show the lineage of an organism and all the direct and co...

Q: Write down the name of the infectious agent of COVID-19 disease.   What is the genetic material of t...

A: Microorganisms or microbes generally are visible under the microscope only. These include living org...

Q: Which specific type of connective tissue may be mistaken for a fibrocartilage

A:  Fibrocartilage is a strong and tough tissue found in the intervertebral discs.

Q: Female or male gender?

A: A karyotype is the pictorial representation of chromosomes.In the male, sex is determined by the pre...

Q: List the four general properties of adaptive immunity.

A: Introduction: An immune system is a huge organization of cells and tissues that is continually watch...

Q: A. Identify the independent variable in this experiment. ____   B. Describe the role of both the lig...

A:  Hi! Thanks for your question. As you have posted multiple questions and have not mentioned which on...

Q: What are the characteristics of all living things

A: Any individual or a thing which shows the characteristics of being alive are termed as living beings

Q: Illustrate the general principle of physiology that informs the flow between cells, tissues, and org...

A: Humans—and alternative complex cellular organisms—have systems of organs that employ along, ending p...

Q: Describe how the hydrolysis of ATP can drive nonspontaneous reactions in a cell.

A: A nonspontaneous reaction (endergonic reaction) has a positive free energy change and does not allow...

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Q: Explain clearly the food pyramid guide.

A: Food pyramid:                Balanced diet is the key input to remain healthy. Food pyramid deals wi...

Q: Gina is scuba diving when she notices a large fish glide over her. It has a flattened body and she n...

A: Explanation: Batoidea is an arrange of cartilaginous angle which are commonly known as beams. Beams ...

Q: Use the following information to answer the following questions."The native structure of hemoglobin ...

A: Since there are multiple questions in this particular question, I'll answer the first one for you. I...

Q: How Are Enzymes Regulated?

A: Enzymes are proteins that go about as biological catalyst which accelerates the rate of any chemical...

Q: One advantage of the excretion of urea instead of uric acid isthat ureaa. requires less energy than ...

A: Excretion of body wastes and harmful chemicals produced by metabolism is very much vital for an orga...