stromatolite is a structure a. produced by endosymbiosis b. that formed only on the early Earth c. consisting of layered bacteria and sediment d. that expels hot water from deep in the Earth

Q: Mitochondria likely originated froma. archaea.b. invaginations of the cell membrane.c. bacteria.d.…

A: They consist of eubacteria and archaebacteria. Eukaryotes have complex internal organisation and…

Q: In the three-domain model, the bacterial ancestor of chloroplasts derives from ancient A) O fungi.…

A: The three-domain system is a biological classification introduced by Carl Woese in 1990 that divides…

Q: Which bits of evidence would convince you that life originated as early as 3.2 bya? a. You look at…

A: The change in the heritable characteristics of the species across many generations is called…

Q: Which statement about spontaneous generation is false?   A. It addresses the formation of living…

A: Spontaneous generation is the idea that emphasizes the point that living organisms originate from…

Q: The term “Cambrian explosion” refers to (a) an increase in biodiversity. (b) a mass extinction. (c)…

A: Answer: Introduction: The Cambrian explosion or Cambrian radiation was an incident about 541 million…

Q: Some protist lineages arose from secondary endosymbiosis. Howmany membranes would surround the…

A: The change in the heritable characteristics of the species across many generations is called…

Q: What is the term for bits of rock and dirt? O A. Mesozoic O B. Half-life O C. Sediment O D.…

A: An MCQ has been asked. Have to name a term for bits of rock and dirt.

Q: History. Koch's postulates O helped prove the Theory of Endosymbiosis O prove prokaryotes evolved…

A: In the late 1800s, scientist Robert Koch proposed a theory through a set of various observations and…

Q: It is thought that the mitochondria and chloroplasts of eukaryotic cells came froma. the development…

A: The main difference between the Eukaryotic cell & Prokaryotic cells is that the Eukaryotic cell…

Q: Which of the following describes the organisms and/or processes that were most influential in the…

A: The earth is one of the eight planets revolving around the sun. It is estimated that earth have been…

Q: Reproduction by budding takes place in: (a) hydra (b) amoeba (c) paramecium (d) bacteria

A: Budding is a method for the asexual reproduction. In this method, a bud in the form of an outgrowth…

Q: Which branchpoint represents the most recent common ancestor of A and C? C 2 4 -A -B 3

A: The phylogenetic tree is a diagram and represents the evolutionary relationship between organisms.…

Q: Which of these is NOT major evidence of endosymbiosis? A. Mitochondria and chloroplasts store DNA.…

A: Option d is not supporting endosymbiotic theory because organelles like mitochondria and chloroplast…

Q: Which of these steps probably occurred first in the chemical andbiological evolution of life?a. The…

A: All living organisms are made up of organic components like carbohydrates, proteins, lipids, etc.

Q: he first eukaryotes were ________ .a. fungi c. protistsb. plants d. animals

A: An eukaryote is characterized as a living being whose cells contain a core and film bound…

Q: Sieve tubes and sieve elements are a. homoplastic because they have different function. b.…

A: Pholem is a permanent vascular tissue system associated with the conduction/transport of food…

Q: Fossilized stromatolites(A) formed around deep-sea vents.(B) resemble structures formed by bacterial…

A: Stromatolites are the fossils formed about 3.5 billion years ago, they are the earliest fossils.…

Q: ng prokaryotic kingdoms uses glycerol and has some members able to survive boiling water, but neve…

A: Kingdom Archaeobacteria consists of glycerol 1 phosphate in membrane lipids .but its cell wall is…

Q: Which of these would be evidence against endosymbiosis? a) chloroplast have their own DNA O b) their…

A: Endosymbiosis: It can be defined as a relationship between two organisms where one organism lives…

Q: Identify which of the following statements is false and correct the statement. a. Brown and red…

A: Answer is option c.) Brown algae gained chloroplasts by engulfing green algae (endosymbiosis).

Q: The______ include animals, fungi, and some protists. a. amoebozoans c. opisthokonts b. stramenopiles…

A: BASIC INFORMATION ANIMAL KINGDOM  It is among one of the five kingdom classified by R.H. Whittaker.…

Q: Metagenesis takes place below the Earth's surface where temperature is less than 150°C . Select one:…

A: Answer : True

Q: Which of the following is thought to be the most closely related to the common animal ancestor? a.…

A: All living organisms are classified based on their internal and external features. The science of…

Q: Scientist have determined that the early Earth had no free oxygen anywhere. Briefly explain what…

A: Scientists suggest that the early atmosphere of the earth was very hot and had no ozone or free…

Q: Both fungi and animals belong to the clade . Select one: A. Unikonta B. Protista C. Alveolata D.…

A: Most of eukaryotes goes under a different group of organisms alluded to as protists. Protista was…

Q: Which is false regarding Archaea?(a) They lack a nucleus.(b) They are considered to be one of the…

A: Archaea are microorganisms that establish the limits of life on Earth. They were first identified…

Q: Marine Biology a) Despite being so large, the ocean contributes to (more or less) primary production…

A: The question seem to have an incomplete part (Small things have more_____________). So, I am…

Q: Molecular evidence supports the view that all plastids evolved from an ancient (a) cyanobacterium…

A: Plastids are the organelles present in plants and are classified according to the presence or…

Q: Use examples associated with the malaria parasite, Plasmodium, to illustrate why an understanding of…

A: Endosymbiosis is a symbiotic relationship in which one organism lives inside the body of another.…

Q: A meristematic cells a. Are dead b. Have a high cytosol/nucleus ration c. Have a few proplastids…

A: Meristematic cells- they are undifferentiated cells capable of continuous cell division. The new…

Q: Rock strata with fossils Which organism is most recent? a b d a

A: Fossils These are defined as the remains of organisms such as plants, animals, single-celled living…

Q: Describe the Theory of Endosymbiosis.

A: a)Endosymbiotic theory states that some of the organelles in eukaryotic cell are derived from free…

Q: The genome of________ can be either RNA or DNA. a. a bacterium c. a virus b. a eukaryote d. an…

A: Introduction: DNA stands for 'deoxyribonucleic acid' and it is the hereditary material in humans and…

Q: Amanda learns that some species of algae share the characteristics of being single-felled and…

A: Algae are a diverse group of aquatic organisms that have the ability to conduct photosynthesis. Some…

Q: Scientists think that terrestrial life probably originated in Earth's oceans because Choose one:…

A: Question - Scientists think that terrestrial life probably originated in Earth's oceans because…

Q: A group of environmentalists is studying the effects of recent commercial zoning to wildlife acreage…

A: Biodiversity is referred to as an occurrence of different times of ecosystems, species with whole…

Q: true or false Cyanobacteria evolved 800,000 years BP (before present)

A: Cyanobacteria are first photosynthetic organisms that existed on earth. These were able too trap…

Q: Chloroplasts of green algae evolved from_____ . a. cyanobacteria b. archaea c. red algae

A: Chloroplasts are the cellular organelles in plants and green algae. It is the site of photosynthesis…

Q: While examining a rock surface, you have discovered an interesting new organism. Which of the

A: Answer: Introduction: Basically, there are three types of organism which is based on the type of…

Q: The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage…

A: The earth is approximately 4.54 billion years ago and the conditions at that time were not meant for…

Q: The evolution of eukaryotes was most directly enabled by which of the following? a. Diversification…

A: According to guidelines we have to answer the first question only. so please kindly post the…

Q: The host cell in the endosymbiosis that produced the firstchloroplasts was a(n) ________.a. early…

A: Introduction Eukaryotes are organisms with a nucleus encased within a nuclear envelope in their…

Q: How do we know how old a fossil is? A) We compare it to current species and see how much has…

A: There are two ways of determining the age of a fossil - Relative dating and absolute dating.

Q: A)Summarize the steps of endosymbiosis in eukaryotic evolution. B)Explain the evidences of…

A: Answer: ENDOSYMBIOSIS : It is the process of symbiotic interaction where an organism lives in other…

Q: ______are members of the phytoplankton . a. Water molds c. Diatoms b. Giant kelps d. Cellular slime…

A: The phytoplankton is too small to be seen individually with the naked eye. They are autotrophic…

Q: Which of these protists is believed to have evolved following a secondary endosymbiosis? a. green…

A: Protozoa are free-living parasitic, single-celled eukaryotes. They are single-celled organisms. They…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.