Stanley Miller’s classic experiment suggests that ______ ______ of organic compounds may have been the basis of cellular life.     a. abiotic synthesis     b. biotic synthesis     c. spontaneous animation     d. extraterrestrial delivery

Q: You live on a new planet where there are no viruses (but there are still bacteria). Which of the…

A: The genetic variation in a prokaryotic cell represents the transformation, transduction, and…

Q: In tomatoes, dwarf (d) is recessive to tall (D), opaque leaves (g) are recessive to green leaves (G)…

A:

Q: health care worker taking care of bedridden patient notices that the skin overlaying the sacrum is…

A: The sacrum is a shield-shaped bony structure that is located at the base of the lumbar vertebrae.…

Q: When we look at HEAD lice, we see (a) Lice from light and dark birds on feathers of light and dark…

A: Scientific study is an experimental and empirical procedure applied in science to generally…

Q: The mapping out of a person's complete set of chromosomes is called a what

A: Polymorphism in DNA sequence serves as the foundation for both the genetic mapping of the human…

Q: discuss on the climate, how organisms co-exist, and human impact on the temperate evergreen forest…

A: The temperate forest biome is the 2 most large forest biome in the world that lies in the temperate…

Q: Tibia, posterior view (is this a right or left tibia?) Identify the following: a. b. C. d. Not…

A: Several of the two bones which make up the leg is the tibia. It is substantially bigger and more…

Q: Assume the common ancestor was non-venomous, had non-jointed limbs, antennae, and 10 legs. Assume…

A: A phylogenetic tree is a diagrammatic illustration which determines how taxons/ species are closely…

Q: Ribosomes that do not anchor on the surface of the rough endoplasmic reticulum during translation…

A: Introduction :- The process of making proteins in a cell takes place at an intercellular structure…

Q: The image above shows tubes A-F, starting from the left side. Each tube shows a different kind of…

A: Bacterial growth is the proliferation of bacteria into two daughter cells which are genetically…

Q: How do you determine that an element is essential for plant? 2. How does an ion move from an…

A: In a plant there are approximately 40 different types of minerals. Out of which carbon, hydrogen,…

Q: Given the following, the sequence of urine flow in the urinary tract is: i. Renal papilla ii. Major…

A: The correct sequence is option A. Renal papilla- Minor calyx- major calyx- renal pelvis- ureter

Q: What is the importance of pollination syndrome in predicting the behavioral preferences in…

A: Pollen is a powdery substance that is produced by seed plants. It consists of pollen grains, which…

Q: II. Complete the table about dermatome. Root Injury C5 C6 C7 C8 L1 L2 L3 L4 L5 S1 S2 Movement…

A: Dermatomes are defined as the places where the skin is found, that are connected to one spinal…

Q: Epidemic is the occurrence of cases that are proportional to normal expectancy in a community or…

A: Ans: Epidemic is the sudden increase in the disease cases in a specific geographical area.

Q: Consider the recent introduction of wolves into Yellowstone National Park. Using the evidence…

A: Yellowstone National Park is situated in the USA. It features a beautiful landscape having trees,…

Q: What are the muscle cells found in cardiovascular system

A: Cardiovascular system or Circulatory system is the body system which includes heart, blood…

Q: 1. Sketch out a graph showing the proposed relationship between pH and bacterial infection in people…

A: Cystic fibrosis is the disease that affects the cells that produce mucus, sweat and digestive…

Q: Sucrose is a carbohydrate produced naturally in plants. It is composed of glucose and fructose.…

A: Plants and other living things employ a process called photosynthesis to transform light energy into…

Q: In purple potatoes, let's say that 2 unlinked genes are needed to produce purple color. The 1st…

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

Q: 30 31 32 The nervous system avoids muscle fatigue during contraction in mixed muscles by A. Only…

A: A reflex arc is a neural route responsible for reflex action. At its most basic level, it consists…

Q: a) Please predict the results from the DNA gel for both samples 1 and 2 by drawing the bands in the…

A: In both the samples, there are 2 bands of lengths 4000nt and 500 nt. Because in type 2 intron…

Q: . the position that distinguishes between DNA and RNA is 2. the carbon that the phosphate group…

A: 1. The position that distinguishes between DNA and RNA is A sugar called ribose is found in RNA,…

Q: 11 12 Which of these best describes signal transduction in the organ of Corti? A. Vibrations become…

A: Introduction :- An inner ear structure called the Organ of Corti, which is a part of the cochlea,…

Q: When assessing general analysis of protein concentration in food, absorbance at 280 nm vs…

A: Assessment of protein concentration in food is generally done by BCA assay or by Bradford method or…

Q: Two branching dendritic arbors are stimulated at the same exact time at locations A & B which are…

A: The action potential consists of several components: 1. Threshold 2. Depolarizing phase/ upstroke 3.…

Q: What is the best estimate (mean age), in millions of years, for the divergence of the clade…

A: A clade is a group of organisms that shared a recent common ancestor.

Q: Regarding the phylogeny below: Monotremata Metatheria Rodentia Mammalia Theria Eutheria Primates…

A: Many commonly named groups like rodents and insects are Clades because in each case the group…

Q: Identify cell wall, cytosol, and chloroplast.

A: Leaf contains lot of chlorophyll molecules. In the cells, the main function of chlorophyll present…

Q: Based on studies, synaptotagmin is a crucial protein anchored to the vesicle and it is activated by…

A: Introduction :- A family of proteins known as synaptotagmins has two cytoplasmic C2 domains and an…

Q: A pigment is bright. b C. absorbs certain wavelengths of light. reflect all energy. absorb all…

A: Introduction :- Pigment is a substance that, when added to or present in something, gives it a…

Q: What statement about synapse activity is false? A.The input of sodium ions by AMPA receptors is…

A: The actual location where information is passed between neurons is at synapses. The connectors known…

Q: Which of the following will result in an INCREASE in the levels (# of molecules) of the…

A: Enzyme beta-galactosidase (also known as β- gal) is coded by z  gene of  the lac operon. The…

Q: Pls explain in detail how the drug affected brain cells at the cellular or molecular level (do not…

A: The brain is a complex organ that controls our thought, memory, emotion, touch, motor skills,…

Q: Is there a difference in the time to dissolve the small and larger biscuit/cracker? Explain. 2.…

A: 1. No, there should be no difference in the time to dissolve small or larger biscuit or cracker. It…

Q: a) what you can know from the graph? why these curve of male and female is different. please propose…

A: The horse is an animal that is domesticated, one-toed, hoofed mammal. It belongs to the family…

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A: Population Attributable Risk (PAR) : The incidence of a disease in a population due to exposure…

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A: Climate change, consumerism and waste, family planning, poverty, food and hunger, and economic…

Q: how the drug affected brain cells at the cellular or molecular level

A:

Q: Which of the four alcohols (Propanol, Ethanol, Butanol and Methanol) was the most effective in…

A: Phospholipid bilayers make up cell membranes, which are typically represented by the "fluid mosaic…

Q: A monophyletic taxon (group) contains an ancestor and all of its descendants. True False

A: Introduction :- A taxon is a group of one or more populations of an organism or species that…

Q: Which tissue contains chloroplast and how can u tell?

A: A chloroplast is a double membrane bound cell organelle found in plant cells. It has a system of…

Q: A chemostat creates a constant flow of fresh nutrients and waste removal for industrial use of…

A: A steady state is a condition where variables remain constant and unaffected by other changing…

Q: what critical cellular/molecular events allow a musckle fiber to relax after contraction?

A: The sequence of events that result in the contraction of an individual muscle fiber begins with a…

Q: The lac operon system requires bacteria to communicate with each other to regulate lactose…

A: The gene regulatory system in bacteria is known as operon system. The genes that are involved in…

Q: Explain the origin of tetrapods

A: The word “tetrapod” means “four feet” and includes all species alive today that have four feet — but…

Q: What does methyl b-cyclodextrin do to cell membranes? Based on this, explain the  effect of this…

A: Methyl β cyclodextrin is a heptasaccharide, which is soluble in water and have more affinity to…

Q: Suppose an X-linked gene in mice exists as two alleles, B and b. X-chromosome inactivation, a…

A: Northern blotting is a technique in the molecular biology to study the gene expression. It is used…

Q: SALAM

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Q: Labrador retrievers are commonly black, brown, or yellow. Two different genes determine coat color…

A: Question-1 possible genotypes of the true breeding brown lab in the P generation will be-- option-3…

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.