When you breathe quietly, inhalation is and exhalation is . a. passive; passive c. passive; active b. active; active d. active; passive

Q: An example of peramorphosis would be a____.   salamander that becomes sexually mature while still re...

A: Peramorphosis is a process in developmental biology, where the growth/maturation of an animal is del...

Q: The only vitamins that must appear on a food label are vitamins C and A. 1) True 2) False

A: Vitamins are organic compounds required in the diet in small amounts to perform specific biological ...

Q: Briefly explain the principle behind the following techniques:(a) ion-exchange chromatography (b) ge...

A: Chromatography is a biophysical method for separating compounds from a mixture. It works on the basi...

Q: Discuss how negative feedback mechanisms regulatehormonal secretions.

A: Hormone levels are primarily controlled through feedback, during which rising levels of a internal s...

Q: Which of the following chemicals is an emulsifier? 1) Amino acids O 2) Bile O 3) Amylase 4) Conjugat...

A: Chemical Emulsifiers: These helps in making the suspension in stable form, by keeping the oil partic...

Q: The mitochondria of a eukaryotic cell is the site ofa. photosynthesis.b. fatty acid metabolism.c. ce...

A: Mitochondria is a membrane-bound organelle in eukaryotes which is referred as powerhouse of the cell...

Q: How do neuropeptides help control pain?

A: Sense is a feeling our body feels when external stimuli hits our body and our body responses. The ex...

Q: Briefly explain the principle behind the following techniques: (a) ion-exchange chromatography (...

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

Q: What are the structural and functional differences between slow and fast muscle?

A: "Muscle cells" are also known as "myocytes". These are the "cells" that made up the muscle tissue. A...

Q: what are cytokins?

A: There is a recognition system of the foreign substances inside the body called the immune system.  T...

Q: The main site of absorption of nutrients is in the 1) mouth 2) stomach 3) small intestine 4) large i...

A: Nutrients:  is a substance used by an organism to survive, grow, and reproduce.  Following are six m...

Q: Are humans still evolving? Say YES or NO and then SUPPORT answer using knowledge of evolutionary pro...

A: Evolution is the change in the characteristics of a species over several generations and relies on t...

Q: The______ is the basic unit of contraction. a. osteoblast c. myofibril b. sarcomere d. myosin filame...

A: Contraction is the property of muscles that helps in the movement of bones for locomotion. The contr...

Q: Make predictions about the functions of differentblood vessels based on their structures.

A: Blood is a fluid present in humans and animals that aid in transporting essential substances like ox...

Q: Distinguish between a theory and a hypothesis.

A: A scientific method explains the processes based upon the experimentation.    

Q: What are the cranial nerves? Give three examples.

A: Brain is a complex structure which control and coordinates different body function by the cells call...

Q: If a cell has 46 chromosomes, how many chromosomes will each daughter cell have after mitosis?

A: Mitosis is a process in which a single cell get divides into two identical daughter cells (cell divi...

Q: Identify and locate the major parts of the heart and discussthe function of each part.

A: Introduction: The heart is discovered just behind and hardly left of the breastbone. The heart sipho...

Q: What procedures are used to introduce a bacterial gene into a plant?

A: The method of introduction a bacterial gene into a plant: 1.Conjugation- In conjugation, DNA is tran...

Q: 1) You exposed a plant to a light that shines on the right side of a plant. Choose the statement tha...

A: The questions are related to reproduction. The production is the process by which an individual is a...

Q: How essential is energy coupling in the transfer of energy in the cells?

A: Energy coupling reaction involves two phases of a reaction which are balanced together one is an exe...

Q: Explain why extreme heat and extreme cold threaten human survival

A: The normal core temperature of human body is between 97˚F and 99˚F, average it is 98.6˚F (37˚C).  Ve...

Q: Describe the structure and function of the three types of blood vessels.

A: All living organisms require nutrients oxygen and other essential materials for their growth and sur...

Q: Explain the concept of coevolution.

A: Evolution can be defined as the change in the heritable characteristics of biological populations ov...

Q: When a body’s immune system attacks the body’s own cells, this is calleda. an inflammatory response....

A: Answer is c. ) an autoimmune response. 

Q: Which of the nutrients do not provide energy? 1) Water and vitamins only 2) Water, vitamins and prot...

A:  The main nutrients that provide energy in the food are carbohydrates fats and protein by their oxid...

Q: During interphase, the chromosomes are not visible through a light microscope. Where are they?

A: The cell cycle is the cascade of events for  appropriate cell division that take place in a eukaryot...

Q: Diagram how a disaccharide forms

A: Saccharide is a carbohydrate that is classified according to its numbers. These are an important sou...

Q: . Briefly explain the principle behind the following techniques: (a) ion-exchange chromatography   (...

A: Ion Exchange Chromatography - It is a technique which is used to separate ion and polar molecules ba...

Q: How essential are the different pigments in photosynthetic organisms?

A: Photosynthesis can be defined as the process in which photosynthetic organisms uses carbon dioxide, ...

Q: We're almost there, just one more push, please help me, the end is in sight

A: Since we have been instructed to answer one question in a post, please post other questions in a sep...

Q: 1. Regarding Sickle Cell Disease all are correct except one ○ a. Occur in alpha haemoglobin ○ b. Res...

A: Genetic disorders are defects that are caused by any genetic mechanism like Mendelian genes, multifa...

Q: What magnification appropriate to view a Eukaryotic organism?

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all...

Q: Why might the use of female contraceptives actually increase the chances of contracting HIV?

A: HIV is a viral STI, a medication that can control the progression of the HIV virus but cannot treat ...

Q: Your biology lab instructor gives you a petri dish of agar covered with visible colonies. Your lab p...

A: Bacteria are the prokaryotes that lack the well-defined nucleus.  

Q: Genetic instability in the form of point mutations, chromosome rearrangements, and epigenetic change...

A: Step 1 Genetic instability is a high frequency of mutations in the gene of a cellular derivation. It...

Q: The period of the cell cycle when DNA replicates is. a. G1 phaseb. G2 phasec. S phased. prophase

A: Cell cycle is sequence of events before cell division occurs, it prepares cell for division. Without...

Q: (a) Match the following list of RNAS (left side) with their function(s) (right side). w. MRNA X. TRN...

A: The study of molecular biology has led to the discovery of various smaller molecules of RNA which ar...

Q: An antigen-presenting cell (APC)a. presents antigens to T cells.b. secretes antibodies.c. marks each...

A: Helper T-cells activate B-cells in order to generate antibodies and aid the production of killer cel...

Q: What is Amino Acid Neurotransmitters?

A: Neurotransmitters are the chemical molecules that help in the transmission of information from one n...

Q: Where are parenchyma tissues located in a plant? Where are parenchyma tissues located in a plant? ...

A: Plants are the living organisms which synthesize their own food by photosynthesis. In photosynthesis...

Q: What is a key characteristic of all arthropods?a. Six legsb. Pseudocoelomc. Mandiblesd. Exoskeleton

A: Arthropods are the largest phylum among animal kingdom. They are non chordates and do not contain an...

Q: Define the term homeostasis. Define the term set point. Explain how a normal range of values for hea...

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

Q: questions 1 and 2

A: "DNA" is made up of various nucleotides that store genetic information in it. DNA is packed into a v...

Q: Are the following examples a description of genetics at the molecular, cellular, organismal, or popu...

A: The branch of science which is concerned with the study of genes is known as genetics. It involves t...

Q: 1. Proteins, structurally and functionally, are the most diverse molecules in life. The shape of a p...

A: Proteins are the polypeptide chain of amino acids are arranged in a specific order. The proteins are...

Q: Which nutrient stimulates peristalsis when present? O 1) Protein O 2) Fiber O 3) Vitamins O 4) Starc...

A: Dietary fibre is an essential nutrient to be included in the diet for a healthy body. They constitut...

Q: Explain the function of leukocytes in general and the individual role of each leukocyte type;

A: Blood is a liquid connective tissue.    

Q: What are adenovirus vectors  ?

A: Viruses are the obligate parasites.   

Q: How are light reactions related to dark reactions?   Question 1 options:   Light reactio...

A: Light reaction is a series of reaction which makes up the initial phase of photosynthetic process of...