Ctrl + F is the shortcut in your browser or operating system that allows you to find words or questions quickly.
Ctrl + Tab to move to the next tab to the right and Ctrl + Shift + Tab to move to the next tab to the left.
On a phone or tablet, tap the menu icon in the upper-right corner of the window; Select "Find in Page" to search a question.
Share UsSharing is Caring
It's the biggest motivation to help us to make the site better by sharing this to your friends or classmates.
The chemical substances and processes that occur in plants, animals, and microorganisms and of the changes they undergo during development and life.
What is another name for enzyme?
This molecules is a ______________.
Which biomolecule is often stored in the body's tissues as energy?
The main difference between the different categories of signaling is the ____ that the signal travels through the organism to reach the target cell.
Which matured cells in the human body do not contain nucleic acids
The diagram shows a bond forming between two amino acids. What is the name of the resulting bond?
Lipid metabolism entails the oxidation of fatty acids to either generate ______ or synthesize new lipids from smaller constituent molecules.
All carbohydrate names end with which ending?
Hormones travel the large distances between endocrine cells and their target cells via the ______, which is a relatively slow way to move throughout the body.
Paracrine signals move by diffusion through the ______ matrix.
Name the group of amino acids which are not synthesized by the body and must be taken in diet.
What do you call the DNA segments that carry the genetic information?
Through a series of steps, citrate is _____, releasing two carbon dioxide molecules for each acetyl group fed into the cycle.
Signals from distant cells are called endocrine signals, and they originate from ________.
Saturated fats are ____________ at room temperature.
These are short term energy and structure in plants.
What protein is the main constituent of skin, bone, tendon, cartilage and teeth among mammals?
When food reaches the small intestine in the form of chyme, a digestive hormone called ______ is released by intestinal cells in the intestinal mucosa.
Water is a universal solvent because ...
A water strider can skate along the top of a pond because of the hydrogen bonds result in water cohesion.
Which one is the active site?
The bond that joins amino acids are called _____________.
What molecule is this:
When collagen is denatured by heat, it turns into?
______ acts on nearby cells, endocrine signaling uses the circulatory system to transport ligands, and autocrine signaling acts on the signaling cell.
The synthesis of a protein from an mRNA template where the code in the mRNA is
Signals within the nerve cells are propagated by fast-moving _______ impulses.
How many sugar units make up monosaccharides?
Which group of amino acids can be synthesized by the body and may not be the requisite components of the diet?
Because the final product of the citric acid cycle is also the _____, the cycle runs continuously in the presence of sufficient reactants.
Certain enzymes require specific, thermostable, low mol. wt, non-protein organic substance called?
Two __________ are transferred to FAD, producing FADH2.
The ligands released in endocrine signaling are called ________, signaling molecules that are produced in one part of the body but affect other body regions some distance away.
The distance between the presynaptic cell and the postsynaptic cell—called the ______ —is very small and allows for rapid diffusion of the neurotransmitter.
Identify the monomeric unit of nucleic acids
Unsaturated fats are ______________ at room temperature.
Signaling via gap junctions involves signaling molecules moving directly between ______.
A ______ is a chemical signal that travels between nerve cells.
Any substance that is acted upon by an enzyme is called aNo?
When a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide decomposes into water and oxygen. This rapid change in reaction rate suggests ________________.
Enumerate the 5 primary nitrogenous bases in nucleic acids
The pancreatic lipases and bile salts break down ______ into free fatty acids.
In the process, three _____ are reduced to NADH, one FAD molecule is reduced to FADH2, and one ATP or GTP (depending on the cell type) is produced (by substrate-level phosphorylation).
If a cell is infected with a ______, the cell can signal itself to undergo programmed cell death, killing the virus in the process. In some cases, neighboring cells of the same type are also influenced by the released ligand.
The attraction that causes water and other liquids to form drops on thin films is called _________________.
How do lipids function for cells?
The reaction used to digest and break the bond in red is ___________.
Organisms living in a bog environment must be able to tolerate nitrogen-poor acidic conditions. Bog plants such as the Venus flytrap and sundew are able to obtain their nitrogen by attacking and consuming insects. These plants produce chemicals that break down the insects into usable compounds.
A cell targets itself.
Why can water have no net charge but have slight charges in different parts of the molecule?
Which of the following is a lipid?
________ also regulates pain sensation and inflammatory responses.
With what 3 letters do enzymes typically end?
Ligands interact with proteins in target cells, which are cells that are affected by chemical signals; these proteins are also called ______.
Communication between cells is called intercellular signaling, and communication within a cell is called _______.
These are long term energy storage which helps to form cell membranes and provides parts of other biomolecules like hormones.
It is the process of making RNA from DNA template where the code in the DNA is
Signals that act locally between cells that are close together are called
The breakdown of fatty acids, called fatty acid oxidation or beta (β)-oxidation, begins in the _____, where fatty acids are converted into fatty acyl CoA molecules.
Which one is enzyme?
This refers to the long chains of carbon hydrogen bonds containing carbon, hydrogen, and oxygen.
Which of the following conclusions can be drawn from this graph?
A cell targets a nearby cell.
These are all examples of lipids except one.
If an RNA molecule is single stranded, the DNA molecule has 2 strands, characteristically described as?
A hydrocarbon chain that is sometimes considered to be a monomer of lipids.
What are the 2 basic types or models of enzyme-substrate complex formation?
Which vitamin play an important role in the synthesis of collagen?
Signals that act locally between cells that are close together are called ______.
When the neurotransmitter binds the _____ on the surface of the postsynaptic cell, the electrochemical potential of the target cell changes, and the next electrical impulse is launched.
Removing the signals will reestablish the concentration gradient for the signal, allowing them to quickly diffuse through the ______ if released again.
What is the purpose of an enzyme?
GTP is energetically equivalent to _______________________.
Step six is a dehydration process that converts _________________.
What is the storage protein that is bonded with iron to store iron in the body?
This is also water's ability to be attraction to other water molecules.
How many sugar units make up disaccharides?
The amino acid that results in disulphide bridges is called _______________.
Match the illustration of the form of chemical signaling.
Ligands can thus be thought of as ______.
The chylomicrons enable fats and cholesterol to move within the ______ environment of your lymphatic and circulatory systems.
Name the 2 types of nucleic acids
Like the conversion of pyruvate to acetyl CoA, the citric acid cycle takes place in the matrix of _____.
The glycerol that is released from triglycerides after lipolysis directly enters the glycolysis pathway as _____.
Paracrine signals move by diffusion through the _______ matrix.
Based on the graph, what is the optimal temperature for this enzyme?
Enzymes in the ______ degrade some types of neurotransmitters to terminate the signal.
Each of these monomeric units of nucleic acids has three components. Name these 3 components
What word describes when water is attracted to other substances?
In order to keep the response localized, ______ are normally quickly degraded by enzymes or removed by neighboring cells.
Chylomicrons contain triglycerides, cholesterol molecules, and other _____ (protein molecules).
The shape of the enzyme molecule is changed.
In _______, a cell may target itself (autocrine signaling), a cell connected by gap junctions, a nearby cell (paracrine signaling), or a distant cell (endocrine signaling).
He discovered nucleic acids in 1869
The ratio of 1:2:1 is one of the properties of disaccharide.
There are four categories of chemical signaling found in multicellular organisms: paracrine signaling, endocrine signaling, autocrine signaling, and __________.
Which one is substrate?
Steps three and four are both ____________________, which release electrons that reduce NAD+ to NADH and release carboxyl groups that form CO2 molecules.
Unlike glycolysis, the citric acid cycle is a ______.
The citric acid cycle produces very little ATP directly and does not directly consume ______.
Where do substrates bind on an enzyme?
In step five, a phosphate group is substituted for coenzyme A, and a ___________________is formed.
The structure of proteins can be changed by environmental factors such as temperature or pH.
In ______, a cell may target itself (autocrine signaling), a cell connected by gap junctions, a nearby cell (paracrine signaling), or a distant cell (endocrine signaling).
What macromolecule is this?
Lipid metabolism begins in the intestine where ingested triglycerides are broken down into smaller chain fatty acids and subsequently into monoglyceride molecules by pancreatic lipases, enzymes that break down fats after they are emulsified by _______.
What links these monomeric units to form proteins?
From the lymphatic system, the chylomicrons are transported to the _____ system.
Almost all of the enzymes of the citric acid cycle are soluble, with the single exception of the enzyme ______, which is embedded in the inner membrane of the mitochondrion.
Which one is not an example of lipids?
Which end of the water molecule has a slightly positive charge?
The term protein was derived from which Greek word that means “primary”?
CCK also travels to the brain, where it can act as a _____.
This refers to the molecule in which opposite ends have opposite electric charges.
Which of these is most likely an enzyme?
The enzyme in the body works at best at 37ºC.
Which of the following molecules make up the basic structure of a cell membrane?
What is the clinical condition wherein the 6th amino acid in the beta chain of hemoglobin is altered?
Chylomicrons leave the enterocytes by exocytosis and enter the lymphatic system via ________ in the villi of the intestine.
CoA is bound to a _____ (-SH) and diffuses away to eventually combine with another acetyl group.
Some enzymes exist in their inactive forms and are known?
In step three, isocitrate is oxidized, producing a five-carbon molecule, α-____________________, together with a molecule of CO2 and two electrons, which reduce NAD+ to NADH.
Within the intestinal cells, these triglycerides are packaged along with cholesterol molecules in phospholipid vesicles called _______.
This is the number of amino acids used to produce proteins for all living things.
What are the 2 semi-essential amino acids among humans?
What type of carbohydrate is this?
A ______ consists of a cell body, several short, branched extensions called dendrites that receive stimuli, and a long extension called an axon, which transmits signals to other nerve cells or muscle cells.
In the citric acid cycle, the acetyl group from acetyl CoA is attached to a four-carbon oxaloacetate molecule to form a six-carbon ______.
A cell targets a distant cell through the bloodstream.
When these impulses reach the end of the axon, the signal continues on to a dendrite of the next cell by the release of chemical ligands called ______ by the presynaptic cell (the cell emitting the signal).
To obtain energy from _______, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol.
What protein substances catalyze biochemical reactions?
What fraction of the total dry body weight is made up of proteins?
Attractions between water molecules are called _____________.
Proteins are polymers of what monomeric units?
Signals that act locally between cells that are close together are called ____.
Most enzymes are composed of _______________.
What is the main function of carbohydrates?
In step two, citrate loses one water molecule and gains another as citrate is converted into its isomer, _______________.
Substances on which enzymes act to convert them into products are known as?
If ATP is in ________________, the rate increases.
Because of their form of transport, hormones get _____ and are present in low concentrations when they act on their target cells.
Chemical signals are released by _______ in the form of small, usually volatile or soluble molecules called ligands.
Which one would not affect the rate of enzyme activity?
The characteristic that all lipids have in common is _____________.
What is the tetrameric protein that transports oxygen?
As water freezes, it expands and its density decreases.
If ATP levels _____, the rate of this reaction decreases.
This molecule is a __________.
A cell targets a cell connected by gap junctions.
A ______ is a molecule that binds another specific molecule, in some cases, delivering a signal in the process.
Fats (or triglycerides) within the body are ingested as food or synthesized by adipocytes or hepatocytes from _____ precursors.
The junction between nerve cells where signal transmission occurs is called a ________.
The enzyme that catalyzes step four is regulated by ________________ of ATP, succinyl CoA, and NADH.
The neurotransmitters that are released into the chemical synapse are degraded quickly or get reabsorbed by the ______ so that the recipient nerve cell can recover quickly and be prepared to respond rapidly to the next synaptic signal.
Lipid metabolism is associated with carbohydrate metabolism, as products of ______ (such as acetyl CoA) can be converted into lipids.
Which type of compound would not dissolve easily in water?
Chemical signals are released by ______ in the form of small, usually volatile or soluble molecules called ligands.
The neurotransmitters are transported across the very small distances between nerve cells, which are called ______.
Almost all of the enzymes of the citric acid cycle are soluble, with the single exception of the enzyme _______, which is embedded in the inner membrane of the mitochondrion.
The sequence of amino acids is determined by ___________.
Name the three universal types of RNA
CCK stimulates the release of ________ from the pancreas and stimulates the contraction of the gallbladder to release stored bile salts into the intestine.
One example of paracrine signaling is the transfer of signals across ______ between nerve cells.
The primary sequence of a protein refers to the:
Which one is not the function of lipids in the body?
______ are produced by signaling cells that can also bind to the ligand that is released.
Signals within the nerve cells are propagated by fast-moving ____ impulses.
To keep up this site, we need your assistance. A little gift will help us alot.
Donate- The more you give the more you receive.
Related SubjectSpaceX Moon Landers
Planet Parade in the Night Sky
Space Exploration 2025
Parker Solar Probe's Historic Sun Approach
The Science of Snowflakes
The Importance of STEM Education
Quantum Computers
Oceans on Uranus and Neptune
Rapidly Feeding Black Hole Discovery
Beaver Moon in Science
Northern Lights: Science and Spectacle
Exploring the International Space Station
Exploring Space with SpaceX Falcon 9
The Taurids Meteor Shower: What You Need to Know for 2024
The Ancient History of Sunlight
Respiratory Care Science
Forensic Science
Engineering
Cannabis Science and Therapeutics
Science Technology and Society
Microbiology and Parasitology
Introduction to Psychology
Introduction to the Philosophy
Inorganic and Organic Chemistry
General Chemistry Organic
Environmental Science
Care of Mother Child Adolescent Well Clients
Community Health Nursing
Biostatistics
Biological Science
Cell Theory
Adipose Tissue
Data Communications and Networking 2
Norovirus Impact
Whooping Cough Outbreak in the United States
United States Bird Flu Outbreak
Understanding the Implications of the First US Bird Flu Case in a Pig
Public Health
Health Education
Shopee Cashback Voucher
Temu $0 Shipping Fee
Amazon 75% Off Discounts