Which of the following have a four chambered heart? Choose all that apply. snakes & lizards crocodiles and birds O frogs fish and sharks mammals

Q: Where is chlorophyll located in the chloroplast? (a) thylakoid membranes (b) stroma (c) matrix (d) t...

A:

Q: I. A 29-year-old woman (gravida 3, para 2) gave birth to a healthy baby after 38 weeks of gestation ...

A: The correct answer is d. The chorionic villi, or foetal tissues, illustrated in the photomicrograph ...

Q: Telophase in Mitosis a ) Chromosomes begin to uncoil into chromatin. b) Nucleolus and nuclear memb...

A: Telophase is the fifth or we can say final phase of mitosis. it is the process that separate the dup...

Q: Explain the concept of environmental justice. Give an example of an inequity relevant to environment...

A: The concept of environmental justice entails treating all people fairly in terms of environmental po...

Q: Another term for the antigen-hiding layer found on some bacterial besides glycocalyx or slime layer ...

A: The slime layer helps to protect bacteria from being caught and worked as a hiding place for them. 

Q: Choose True for yes and False for no, for each of the statements 1) The distribution of the two spec...

A: Given,          A,B,C species share a common ancestry but they are present in different places .And ...

Q: Name the main benefit that vascular tissue provides to land plants. Explain how vascular tissue bene...

A: In land plants, vascular tissues can be observed. These tissues include xylem and phloem. The compon...

Q: If you were an epidemiologist interviewing someone with an infectious disease that could lead to an ...

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

Q: Explain the goals and methods of restoration ecology

A: Ecology can also be termed as ecological science. It is refereed to as the branch of biology associa...

Q: How many different types of alterations in chromosomal numbers are there? -How can I use the F plas...

A: Uracil is a compound present in RNA base, it is replaced by thymine in DNA. 

Q: Complete the Punnett Square and answer the following. A.Genotype of the parents B.Genotypic ratio a...

A: Given a dihybrid cross Genotype of Round Yellow is  RREE. Genotype of Wrinkled Green is rree.       ...

Q: 14. How many purines are there in chromosome 14 the human genome (Hsapiens), version hg19? 15. How m...

A: 14. Chromosome 14 spans more than 107 million DNA building blocks or base pairs and it represents ab...

Q: What two primary sources contribute the fluid we need each day in addition to drinking water and bev...

A: Every organism needs some specific amount of body fluid in its body every day. The sources of water ...

Q: How do selective-serotonin reuptake inhibitors (SSRIS) increase serotonin in the synapse? O They cau...

A: Note: As Per Bartleby Guidelines For Remaining Answers Please Repost The Question. Introduction: Ser...

Q: Which of the following statements is incorrect about the rules in biological nomenclature? A. Order ...

A: The binomial nomenclature is the naming system used to assign scientific names to living organisms. ...

Q: male and female reproductive

A: The tissues, glands, and organs involved in producing offspring is called reproductive system. In wo...

Q: all the possible types of gametes

A: Genotype refers to the genetic makeup, composition, or structure of a specific organism. 

Q: Gather data about molds, an organism from the fungi kingdom, from its classification system, their u...

A: mould is a living organism that belongs to the kingdom Fungi. Fungi can be single-celled or very com...

Q: Draw and label the parts of the late neurula embryos of Amphioxus/echinoderm, amphibian, avian/mamma...

A: Adenohypophysis Endostyle Notochord Nascent somite Neurenteric Canal Pronephric Kidney  

Q: Why does Genus entamoeba called true amoeba?

A: Introduction Entamoeba:- It is a tiny protozoan parasite of man and animals, Entamoeba is a genus of...

Q: What type of defense is occurring when mucin flows off the epithelium and carries pathogens with it?...

A: The immune system in our body is responsible for protecting us. The entire immune system is divided ...

Q: The conduction velocity in nerves is primarily dependent on the O localization of the Na+ / K+ pumps...

A: Nerve conduction velocity (CV) is an important aspect of nerve conduction studies. It is the speed a...

Q: Leaves consist of________(expanded portion) attached to a twig by the __________. A ______ leaf cons...

A: *Leaves consist of attached expanded portion called leaf blade attached to a twig by petiole *A simp...

Q: 3. Hemophilia is a recessive sex-linked disease carried on the X chromosome in humans. Cross a woman...

A: Since the gene is a recessive sex linked gene it would be present on x or y chromosomes. As seen in ...

Q: 2.) It was Rosalind Franklin that helped Watson and Crick realize that the sugar-phosphate backbone ...

A: Building blocks of DNA that had been known for many years yet the DNA structure was not known the ba...

Q: Direct cystometry is used a needle inserted through the walls of the abdomen directly to the bladder...

A:   INTRODUCTION    Cystometry is a test that mainly used for checking the problem with  abundant and ...

Q: two different

A: A test that checks for bacteria at the site of a suspected infection such as the throat, lungs, geni...

Q: The region labeled with the arrow in the accompanying electron micrograph of the plasma membrane is ...

A: The arrow points to the hydrophobic layer of the cell (plasma) membrane.

Q: ADH1A alcohol dehydrogenase 1A (class I) Describe a way in which the gene can be manipulated to trea...

A: * The gene ADH1A alcohol dehydrogenase  gene encodes a member of the alcohol dehydrogenase family. a...

Q: Is genetic engineering a pure scientific process or it is indeed an act of humans playing like God?

A: Genetic engineering is a process by which the nature of genetic material (DNA and RNA) is altered an...

Q: Anaphase- In Mitosis a) Centromeres divide. b) Single-stranded chromosomes (now consisting of one ...

A: There are two different types of cell division: Mitosis: produces diploid cells Meiosis: produces h...

Q: 6.) A form of “homologous recombination" can also occur in somatic cells. a. When might this happen?...

A: Recombination is a process by which pieces of DNA are broken and recombined to produce new combinati...

Q: One of the types of structures on this list is NOT part of the reproductive cycle of a microbe. Iden...

A: Sporulation is the process of vegetative cells producing spores under unfavourable environmental con...

Q: In a few brief sentences, describe one of Frans de Waal's experiments with primates. Note: No plagia...

A: Answer :- During de Waal's experiments, he said, monkeys compensated impartially dismissed the cucum...

Q: A nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) ...

A:   A nucleosome is defined as a 3D structure composed of approximately two turns of DNA wrapped aroun...

Q: Here are the results of the testcross: Green-eyes, wild-type wings 245 Green-eyes, miniature wings 2...

A: 6) The number of flies with green eyes and and miniature wings are 232, these organisms are least in...

Q: Match the rodent ovulatory cycle phase with the correct hormone combination Proestrus x Peak Progest...

A: The term menstrual cycle is associated with the occurrence of cyclic ovarian activities in mammals. ...

Q: The molecular tether that links sister chromatids of a duplicated chromosome to each other is (a) co...

A:

Q: Which of these microbes has the most complex cell wall?     fungi     bacteria     protozoa  ...

A: Cell wall:- A cell wall is a structural layer surrounding some types of cells, just outside the cell...

Q: As much fun as lInterrupted mating experiments are, they don't always capture a truly accurate plctu...

A: From the given table it is observable that for the growth of P13 it is necessary to have a media sup...

Q: Identify the stages in the eukaryotic cell cycle and describe their principal events.

A: Eukaryotes are organisms whose cells contain a true nucleus and other membrane-bound organelles. The...

Q: Use examples to describe transcription factors.

A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA (deoxyri...

Q: what are the three structures shown in the pictures? a: b: c:

A: DNA is molecule that carries the genetic information in all living organisms. 

Q: What role do histones play in nucleosomes?

A: Introduction  Each human cell contains around 2 meters of DNA which contains about 3 billion base pa...

Q: Microbes which feed on dead organic material are classified as:     pathogens     parasites    ...

A: Living organisms can be classified according to their mode of nutrition. Every living organisms need...

Q: rections: Answers must be in essay form. Outline form is not acceptable. Labeled diagrams may be use...

A: Introduction: NADH is essentially produced only during the cellular respiration and it gets oxidised...

Q: According to optimal foraging theory... organisms will have a tendency to select the smallest prey a...

A: Optimal Foraging theory is a behavioural model of ecology which helps to predict the animal behaviou...

Q: Which of the following is TRUE about CAM photosynthetic pathway? Compared to the C3 and C4 pathways,...

A: * CAM photosynthetic pathway also called  Crassulacean acid metabolism photosynthetic pathway. *CAM ...

Q: What are two molecular controls that trigger the onset of different stages of the cell cycle?

A: For making the cell cycle in a forward way, there should be activating acyclin and inactivating the ...

Q: H2N 1.) Look carefully at this nucleotide: N- || НО-Р-О- N. OH a.) Number the carbons in the sugar g...

A: DNA is a long, double-stranded, helical molecule composed of building blocks called deoxyribonucleot...