What cellular event happens in response to the binding of a growth factor to its respective receptor on the membrane of the growth factor’s target cell?

Q: (iii) What is the function of the promoter in the bacterial operon?

A: The lactose operon (also abbreviated as the lac operon) is a group of genes present in E. coli and…

Q: ou count 54 colonies of bacteria on an agarp late on which you spread 0.2ml of a 10^-4 (or 1/10,000)…

A: Given information No. of colonies= 54 Volume = 0.2 ml Dilution = 1/10000

Q: Are cosmetics still being tested on animals? Show proof that the practice is still going on or has…

A: Introduction Cosmetic animal tests are archaic chemical-poisoning experiments devised more than half…

Q: After fertilization the integument(s) of gymnosperms and angiosperms becomets O nutritive tissue O…

A: The integuments are the ovule's outer layer(s), which mature into a seed coat as the ovule matures…

Q: Identify the physical and social factors that influence hunger.

A: Hunger is the vigorous urge to eat food. It is also called the craving to eat something. There are…

Q: 1. Place the parents alleles at the top and on the left side. 2. Write in the allele crosses inside…

A: Cystic fibrosis is an autosomal recessive disease which means that two recessive alleles are…

Q: Name the type of mutation from the following choices: silent, missense, nonsense, frameshift. The…

A: CGA codes for Arginine.  GGA codes for Glycine.  Since the protein being coded for is completely…

Q: happens when traits become more common in a population because of the reproductive success of…

A: Mechanical isolation is defined as the physical incompatibility between the reproductive organs of…

Q: Which form of flavin adenine dinucleotide is the "reduced" form, FAD or FADH2? Explain

A: Flavin Adenine Dinucleotide: It is a redox active coenzyme associated with various proteins, which…

Q: Which of the following things is/are true about this organism? O Phylum Chordata O Agnathan Class…

A: Introduction The given image shows a Sea lamprey. The sea lamprey is a parasitic lamprey native to…

Q: In  corn  plants, the  allele  for  purple kernel  (P)  is dominant over  the  allele  for  yellow…

A: Given -  Allele for purple kernel - P Allele for yellow kernel - p Allele for smooth kernel - S…

Q: What are the principle and basic concepts of DIFFERENTIAL staining?

A: The simple dye is used in the technique of simple staining to highlight only the specific structures…

Q: which protein interacts with RNA polymerase, in order to allow RNA polymerase to cleave RNA using…

A: SII a protein, interacts with RNA polymerase, in order to allo RNA polymerase (ll mainly) to cleave…

Q: 14. READ CAREFULLY!!! From the list below, circle the one that is a +/+ relationship, put a star…

A: Members of different populations or species often interact i.e., effect each other in various ways…

Q: Table 1 shows the molar properties of bases in the nucleic acid from nine different living…

A: The melting point of DNA is determined by the guanine and cytosine content in the DNA.

Q: How does temperature and PH affect the activity of enzymes.

A: Introduction - Enzymes are proteins that help a person's body's metabolism, or chemical reactions,…

Q: Summarize the research on the ability of animals to communicate and use language.

A: Communication is an essential part of animal life, enabling animals to share information about…

Q: 8

A: *The ovary is an organ can be found only in females which contains many ovum. *Ovaries will secretes…

Q: Match the correct classification levels for this organism below. Domain [Choose ] Echinodermata…

A: Carl Woese divided all organisms into three domains namely, Archaea, bacteria, and eukarya. The…

Q: Enumerate the modern classification system of how organisms are classified from GENERAL to SPECIFIC…

A: The modern classification is basically the Linnean system.  The whole classification starts with the…

Q: True or false: The dermis is

A: Three layers of tissue make up the skin: Epidermis, the top layer. Dermis, the middle layer.…

Q: What is the role of ¹4N and ¹5N in Meselson-Stahl experiment? 15

A: Answer--

Q: Drag and drop the statements to decide whether they describe Rhizaria, Amoebozoa, or Slime Molds.…

A: We are only allowed to do one question at a time. Please repost the undone question again. Thank you…

Q: Define Cardiac Output, give its relationship with Stroke Volume.

A: Introduction - The heart is a muscular organ the size of a fist that is placed directly behind and…

Q: Draw a schematic diagram showing the components involved in the regulation of the tryptophan operon.

A: The trp operon is regulated by the trp repressor. When bound to tryptophan, the trp repressor blocks…

Q: An eukaryotic chromosome has several origins of replication. How many origins of replication are…

A: Introduction :- The levels of packaging from raw DNA molecules to the chromosomal structures seen…

Q: What ions are removed from the uremic plasma? Mark all that apply Na+ K+ CI- Ca+2

A: Due to inadequate excretory, regulatory, and endocrine function of the kidneys results in  uremic…

Q: estrogen receptor (ER)-positive or -negative.

A: Cancer : The condition where the cells in a specific part of the body grow and reproduce…

Q: DNA

A: Answer--

Q: The following double stranded DNA fragment was double digested with BamHI and Kpnl. If you ran the…

A: Restriction enzymes are the enzymes which cut the DNA at specific sequences. The specific sequence…

Q: Decreased osmolarity in the renal interstitium and vasa recta results in - (Mark Two) decreased…

A: The regulation of water concentration in the body is mediated by a hormone called vasoppresin or ADH…

Q: Illustrate how SP with specific DNA sequences. initiates double strand breaks (DSBs) after PRDM9…

A:

Q: If a person has one gene influencing blue eyes but actually has brown eyes, blue eyes must be a…

A: Introduction :- When two or more genes control the same trait, it is known as polygenic inheritance.…

Q: Shown in the figure, is a portion of the electron transport chain pathway, in which electrons are…

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

Q: What are the principle and basic concepts of GRAM STAIN?

A: Gram staining is among the most important microbiology staining procedures. It was first invented in…

Q: Choose one of the strands and transcribe the strand. Show the steps (with proper label) and do a…

A: DNA is the store house of genetic information. This information is transferred to mRNA through the…

Q: Assuming a pure-breeding P generation, what ratio would you expect in the F2 generation if a mutant…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: Describe the functions of the following proteins during DNA breaks and repair: (i) Ku70 (ii) Uracil…

A: The genetic stability of organisms is important for their survival. Only the presence of accurate…

Q: Why is reprouctive isolation insuffecient to define a species?

A: Reproductive isolation refers stopagge in the ability to reproduce successfully with sexual…

Q: Figure 5. Skin of Tomato under LPo. Type of simple permanent tissue:

A: Tissue is a group of cells that have similar structure and perform function together as a unit.

Q: Automatic responses are processed in more primitive areas of the brain, such as the amygdala,…

A: Amygdala  Amygdala is a group of almond shape celled located at the base of the the brain.

Q: in 250 words and in own words Explain the role of the components of a spinal reflex arc.250 words…

A: A reflex arc is defined as a neural pathway that controls a reflex.  The usual pathway would have…

Q: Protein P, normally stimulates apoptosis or cell death when activated. Consider a cell with a…

A: The construction of this question gives us an  information about the nature of protein P, P when…

Q: Which of the following are associated with dynamic mutations? O Genomic imprinting O Trinucleotide…

A: First of all we will discuss that, what is dynamic mutation and its causes.  Dynamic mutation is the…

Q: M1, M2, M3, M4 receptor are present belong with; O muscarinic receptors O Adrenergic receptors OG…

A: Muscarinic receotors are type of G protein coupled receptor. It involves in parasympathetic…

Q: A SNP marker is found linked to the cystic fibrosis gene. Cystic fibrosis is an autosomal recessive…

A: Cystic fibrosis follows autosonal recessive inheritance. This means that both the alleles should be…

Q: Is it advantageous or disadvantageous for a pathogen to deadly. a. It is advantageous. b. It is…

A: Microbes, which are tiny and nearly invisible, have had a huge influence on society since the…

Q: U2, the energy of this reaction is coupled to ne pumping of H+. Drug Y can pick up electrons from…

A: Electron transport chain is the last step of cellular respiration. The first being glycolysis the…

Q: LDL LDLR LDLR LDLR ( Which mouse has higher blood cholesterol between mice in lanes 1 and 2?…

A: Western blot : It is a technique used to identify and locate proteins based on their ability to…

Q: List five proteins that interact with the CFTR protein.

A: Proteins that interact with CFTR protein.

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.