Watson and Crick’s discovery of DNA is clearly one of the most importantbiological discoveries in the last century. What advances in medicine and science can you think of that are built on knowing the structure of DNA?

Q: Explain the steps of smooth muscle contraction andhow the contraction differs from skeletal muscleco...

A: Smooth muscles are present in the organs of the body. These muscles help in the expansion of organs ...

Q: Smooth muscles differ from skeletal and cardiac muscles in that they ________. a. lack myofibrils b....

A: Introduction: Smooth muscles provide support to the hollow internal organs (like stomach, bladder, a...

Q: What is the limitation of Y-chromosome DNA profiling ?

A: Y chromosome DNA profiling is a DNA test which is used in determining a man's patrilineal ancestry. ...

Q: 1. Which structure covers during the larynx during swallowing?A. EpiglottisB. GlottisC. ConchaeD. Hy...

A: Glottis opens into the windpipe and is responsible for the production of sound. While the epiglottis...

Q: Strabismus, a misalignment of the eyeball caused by an imbalance in the extrinsic eye muscles, is al...

A: The six muscles that function to regulate eye movement are known as the extrinsic or extraocular mus...

Q: What muscles form the anterior and posterior axillary folds?

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and m...

Q: How does photorespiration counter photosynthesis?

A: Photorespiration is defined as the process by which, in higher plants, Ribulose Bisphosphate is oxid...

Q: Explain the regulation of testosterone secretion

A: Testosterone is referred to as the steroidal hormone that is principally responsible for developing ...

Q: What is meant by passive transport of materials into a cell?Describe the passive processes by which ...

A: Passive transport: Passive transportation of substances takes place along the concentration gradient...

Q: How might you distinguish the bones comprising the os coxae in an articulated skeleton? Use each of ...

A: Ox coxae is the hip or pelvic bone. It is a large, flattened, and irregular bone. It has three parts...

Q: One-way passage of food through the digestive system of many animal groups allowsa. intracellular di...

A: Digestion refers to the phenomenon by which food is digested in the body and is absorbed to fulfil t...

Q: Name and locate the ventricles of the brain.

A: Ventricles are referred to as structures that are responsible for the secretion of cerebrospinal flu...

Q: What is the differnce between benign and malignant

A: A mass of tissues which is formed due do accumulation of abnormal cells is known as tumor. In normal...

Q: Describe the structure of the hypothalamo-hypophyseal portalsystem, and briefly discuss the advantag...

A: Introduction: The master center of the endocrine system of the human body is the hypothalamus as it ...

Q: Can years of exposure to to sun contributeto melanoma

A: Melanoma is a type of skin cancer that starts in the melanocytes. Melanocytes are the cells that reg...

Q: The extensor digitorum brevis goes only to toes 2–4, so howis it possible to extend your little toe ...

A: The digits of the foot in the tetrapods are known as the toe. In humans, there are five toes, with t...

Q: On Figure 1, what is occurring at the positions C indicated by black arrows?

A: Answer: There is the formation of 'Replication fork' at position C in the given diagram. 

Q: Imagine a person who suffers a stroke.  The individual can understand language perfectly and decide ...

A: The nerve impulse is an electrical signal that travels along the neuron. The charged particles (pote...

Q: Describe how PTH controls the number of osteoclasts.What are the effects of PTH on the formation of ...

A:  Parathyroid hormone is secreted from four parathyroid glands, which are small glands in the neck, l...

Q: Which regions of the body are supplied by plexuses and by intercostal nerves?

A: A nerve plexus is defined as a network formed by intersecting nerves, serving the same region of the...

Q: Recall that if a muscle spans a joint, it must move the joint(and conversely, if a muscle doesn’t sp...

A: The hip flexors help equalize the posterior pelvic muscles. Three key muscles  become rigid and less...

Q: Draw structural formulas for all of the following. Q.) Alcohols with the molecular formula C4H10O

A: Take the example of two organic molecules- Ethanol and dimethyl ether. Both these molecules have two...

Q: How do preload, contractility, and afterload influence stroke volume and cardiac output?

A: In physiology, the term cardiac output refers to the volume of blood pumped by the heart in one minu...

Q: Explain hydrocephalus by giving proper refrence?

A: Hydrocephalus is a condition in which excess cerebrospinal fluid (CSF) build up will take place in t...

Q: Q 5) What is the role of kidney in maintaining the blood pressure regulation?

A: The renal system is the principal organ system of the organisms’ body, comprising two kidneys, a bla...

Q: Summarize how damage to the glomeruli/nephrons canlead to uremia and edema.

A: The kidney's structural and functional unit composed of renal tubule and renal corpuscles is known a...

Q: The meanings of hypertension and hypotension

A: The pressure of the body fluid blood against the wall of the tube-like structure called the vessel i...

Q: Explain the statement, All proteins are polypeptides but not all polypeptides are proteins

A: Introduction: The chains of amino acids make up a polypeptide. Proteins are nothing but one or more ...

Q: Explain what happens to excess glucose in the body.

A: Glucose is a monosaccharide sugar that is formed from the carbohydrate catabolism during digestion. ...

Q: Distinguish between the fovea centralis and the optic disc.

A: Eyes are organs of the visual system. They provide animals with vision, the ability to receive and p...

Q: Given these phrases:(1) neuron cell bodies in the nuclei of cranial nerves(2) neuron cell bodies in ...

A: The Autonomic nervous system is the part of the nervous system that supplies the internal organs, in...

Q: Which major veins drain blood from the head? From the upperlimbs? From the abdominal viscera? From t...

A: Veins can be defined as blood vessels responsible for carrying deoxygenated blood from all body part...

Q: What special terms are given to the plasma membrane, cytoplasm, and smooth ER of a muscle cell?

A: The skeletal muscles have a striated appearance, and these muscle tissues are under the voluntary co...