Chronologically arrange the evolutionary events, with 1being the earliest and 6 the most recent.___ 1          a. onset of oxygen-releasing___ 2            pathway of photosynthesis___ 3         b. liquid water appears___ 4         c. origin of protocells___ 5         d. emergence of the first___ 6             eukaryotes                e. origin of chloroplasts                f. the big bang

Q: What type of microbe has lipid A? Gram-positive bacteria Protozoa Fungi Gram-negative bacteria

A: Answer :- Gram-negative bacteria. - Gram-negative bacteria is type of microbe has lipid A.

Q: An RNA that functions as an enzyme is a ________ .a. protein c. ribosomeb. protocell d. ribozyme

A: Introduction: RNA is a single-stranded molecule in many of its biological roles and consists of a mu...

Q: For mumbers 34-50. Given the following pedigree, answer the following questions. Ist generation woul...

A: The pedigree analysis helps us identifying the mode of inheritance of a particular disease by observ...

Q: pedigree chart. C

A:

Q: 1. Given these characteristics: Matrix composed almost entirely of extracellular collagen fibers. It...

A: Dense connective tissue

Q: The following are photomicrographs of T. spathacea leaf cells in 0.01 M NaCl and 0.30 M NaCl solutio...

A:

Q: Contractile bundles occur in nonmuscle cells; these structures are less organized than the sarcomere...

A: Skeletal muscles have thin and thick filaments.

Q: A woman who is blood type B has a child whose blood type is A; her husband is blood type O. Despite ...

A: The "ABO" blood group system is made up of four blood groups – A, B, AB, and O and is based mostly o...

Q: Explain how domain shuffling could occur by recombination (crossing over) of different genes during ...

A: Domain shuffling is a process where gene segments coding functional domains are shuffled between dif...

Q: do each strand of DNA have equal number of phosphate group

A:

Q: Activity 3: Short Essay Directions: Choose two questions to answer. You may use a separate sheet to ...

A: Vitamins are important for normal growth and development. There are two types of vitamins, based on ...

Q: Would there be any difference between a young and mature monocot stem cross section?

A: Angiosperms or flowering plants can be divided into two categories. One of the categories involves m...

Q: There are at least 20 different types of myosin. What properties do all types share, and what makes ...

A: Introduction Myosins are a group of motor proteins that play a key role in muscle contraction and a ...

Q: Which of the following statements about CRISPR-Cas9 is correct? O A. It relies on the natural proces...

A: The CRISPR cas9 is the abbreviated form of clustered Regularly Interspaced Short Palindromic Repeats...

Q: b. Using a thin line, graph the relative amount of DNA per nucleus using the LEFT Y axis (G1, S and ...

A: Mitosis is a process of cell division that results in two daughter cells that are genetically identi...

Q: Compare and contrast the use of the word recombinant asused in the phrases (a) “recombinant DNA” and...

A: Introduction:- Deoxyribonucleic acid, or DNA, is a molecule that contains the genetic instructions t...

Q: A single nucleotide addition and a single nucleotide deletion approximately 15 bases apart in the DN...

A: During protein synthesis, the nucleotide sequence of the mRNA is read in the form of triplets.  

Q: there are 9 chromosome pairs, how many univalents are there at anaphase I on each pole?

A: Anaohase 1 is the  stage of meiotic first division in which the paired chromosome separates and move...

Q: A 15-year-old boy presented with a history of episodic vomiting associated with subacute encephalopa...

A: Abstract:Two cases of hyperammonemia with elevated citrulline are reported, one resulting from a def...

Q: Label the diagram of a phospnolpid 主

A: Introduction: Phospholipids are the class of lipids that are a major component of all cell membranes...

Q: Escherichia coli is a facultative anaerobe that ferments sugars. In the absence of oxygen, it does n...

A: Introduction:                 An  anaerobic bacteria that does not live or grow in the presence of o...

Q: Describe the ways that viruses can spread between hosts.

A: Virus is small collection nof Genetic code like DNA or RNA which surrounded by Proteins coat and whe...

Q: Identify the sites of lagging strand synthesis. Select all that are true. B

A: DNA replication of the double-stranded DNA occurs simultaneously at both strands. The replication oc...

Q: Do algae reproduce sexually or asexually?

A: Algae are eukaryotic and photosynthetic organisms and range from unicellular forms like Chlorella to...

Q: Three systems of cytoskeletal filaments exist in most eukaryotic cells. Compare them in terms of com...

A: Introduction:- The cytoskeleton is made up of three types of filaments: actin filaments, microtubule...

Q: The attached figure is a blood film from a patient that has likely contracted Magnified images illus...

A: In the first picture we saw that it is a RBC and we saw some chromatin dots that are on the surface ...

Q: Does a shoot need to include a stem? Could a plant perform photosynthesis successfully with its leav...

A: plant anatomy-is the subject to study the internal parts & processes of plants.  photosynthesis ...

Q: There are four genotypes that are possible for a couple (Gg x Gg)'s children :  2 Gg - normal from ...

A: Introduction :- A disease is an abnormal condition that affects the structure or function of all or ...

Q: (a) (b) (c) The part of the illustration at the bottom (c) shows Initial inflation of the BP cuff O ...

A: Sphygmomanometer is the device used to measurement of blood pressure. 

Q: Answer the following two questions. Ensure that your answer is separated into two parts, labelled A ...

A: Introduction:- Eukaryotic chromosomes are made up of linear DNA with two ends, whereas prokaryotic c...

Q: A few months ago Dr. Trapper’s, 4-year-old son, Caleb, woke him up at 3:00 am, complaining that he d...

A: Clinical features from the question are:- Age= 4 Fever Ear pain Headache H/O Runny Nose Flushed App...

Q: What can the world do to stop deforestation? (5 bull-point)

A: Introduction : Deforestation means Cutting down and clearing trees to use the land for other purpose...

Q: Explain the several key properties of DNA vectors ?

A: Microbiology is the scientific study of single celled, multicellular, and acellular microorganisms. ...

Q: What are bacterial plasmids ?

A: Cloning is one process involved in gene manipulation and recombinant DNA technology.  

Q: Please discuss the common infectious causes of diarrhea.

A: Introduction Diarrhea is usually caused by a virus, or sometimes, contaminated food, it is loose, wa...

Q: A condition wherein both phenotypes appear to be spotted or mixture of traits on the third phenotype...

A: Correct option is: B i.e. Incomplete dominance

Q: Know the name of the RNA molecule that is the initial product of the transcription of a eukaryotic s...

A:

Q: What is the theorized origin of these organelles and what is the name of the Scientific Theory that ...

A: Chloroplast are the site of photosynthesis in green plants. It consists of three layers which are ou...

Q: Ellie was testing her and her parents blood types. She found that her blood type was type O. Her mot...

A: The ABO  and Rh blood grouping and typing tests mainly involves the principle of agglutination react...

Q: The genotype AABBCCDD will have the following gametes: O ABCD, ABC. O abcD, ABC. O ABCD, ABCD O ABCD...

A: Introduction: Gamete refers to a haploid sex cell that is a sperm in males and egg in females 1) The...

Q: A. Punnett Square B. Genotype of father C. Genotype of Mother D. What percent of the offspring will ...

A:

Q: What is the benefit of proteases in a cylinder of proteasome? What would happen if proteases functio...

A: Proteasome: protein complexes involved in degradation of damaged or unnecessary proteins. 

Q: The function of Th lymphocytes at the immunological synapse is to __________. View Available Hint(s)...

A: Option a

Q: What are the methods in measuring total leaf carbon content and lignin content from a leaf and pleas...

A: Carbon content is the total amount of carbon present in the leaf and the lignin content is the total...

Q: Name: Chal car. Directions: For each question below, select the best answer and nl in the a on the a...

A: 1. Gregor Mendel studied the different traits present in a pea plant using mathematical analysis of ...

Q: Mitosis and Meiosis:

A: Mitosis is the division of a cell into two daughter cells that are genetically identical to the pare...

Q: When a visual pigment absorbs photons of light, it changes its molecular shape and at the same time ...

A: Introduction: Rhodopsin is the pigment present in the retina of an eye.Iodopsin is the photosensitiv...

Q: A. Examine the crosses above and deduce the origin of G. hirsutum. Diagram your cross and give level...

A: Examine the crosses above and deduce the origin of G. hirsutum. Diagram your cross and give level of...

Q: Are special chemicals administered to the plants to induce seed production? If yes, provide several ...

A: Seed It refers to an embryonic part that is covered by the protective outer covering called the seed...

Q: In an electrophoretic gel across which is applied a powerful electrical alternating pulsed field, th...

A: Introduction Gel electrophoresis is a technique that uses size and charge to separate and analyse ma...

Prokaryotic evolution

The term evolution means the gradual change or a transformation from a simple or primitive state to a complex or advanced state. Prokaryotic evolution is a concept that involves the evolution of the form and function of most primitive organisms (prokaryotes) through several stages and changes to form diverse life as a part of organic evolution.