Scientists hypothesize that very simple cells could have arisen through four steps. Place thos 4 steps in the correct order 1 V [ Choose ] The abiotic synthesis of small organic molecules The origin of a self-replicating molecule that eventually made inheritance possible. 2 The joining of small molecules into polymers. The packaging of molecules into early cells with membranes maintained by an internal chemistry. 3 [ Choose ] 4 [ Choose ]

Scientists hypothesize that very simple cells could have arisen through four steps. Place thos 4 steps in the correct order 1 V [ Choose ] The abiotic synthesis of small organic molecules The origin of a self-replicating molecule that eventually made inheritance possible. 2 The joining of small molecules into polymers. The packaging of molecules into early cells with membranes maintained by an internal chemistry. 3 [ Choose ] 4 [ Choose ]

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter4: Cell Structure

Section: Chapter Questions

Problem 9SA: Which of the following statements is correct? a. Ribosomes are only found in bacteria and archaea....

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Describe in sentences how having organelles is important for creatures to be multicellular. (ex. even though prokaryotic cells evolved first, why have they never evolved to form a multi celled creature?)
a) Do you think that most plant and animal cells are similar to does we observed today? b) Both atoms and the cells viewed today are small. Describe at least teo ways in which atoms and cells differ? c) What criteria can you use to distinguish between cells of the organisms belonging to different eukaryotic kingdoms (planta, animals , fungi)
The earliest cellular life forms appear to have been_____. A. Bacteria B. One-celled plants C. On-celled animals D. Viruses E. Mammals
Scientists think that terrestrial life probably originated in Earth's oceans becauseChoose one: A. energy was available there. B. all of the chemical pieces were there. C. All of the possible answers are correct. D. the earliest evidence for life on Earth comes in ocean-dwelling forms.
Endosymbiotic theory can be applied to Biomolecules as it invloves the development of nucleic acid and DNA. Protein import is one of the strongest evidence of origin of organelles. EXPLAIN!
Cells are? A. None of the above B. Atoms that are bound together C. Tiny units of matter that form molecules D. The smallest units of life
One of the simplest definitions of a life-form is anything with the capacity to reproduce and regulate itself. Before life began, the complex organic, or hydrocarbon-bearing, molecules that makeup RNA and DNA, the building blocks of life, must have formed. No one knows exactly how life is formed from these molecules, but many ideas have been put forward. As you enter this area, go toward the large video screen on the right and explore the “Life at the hydrothermal Vents” label deck. Some scientists theorize that life begins at deep-sea vents. Find three lines of evidence to support this claim.
1.) Which of the following is not part of the early cell theory? A)All organisms are multicellular. B)All organisms are made of one or more cells. C)The cell is the fundamental unit of life. D)All cells come from preexisting cells. 2) Which of the following features is not common to all cells? A)cell wall B)ribosomes C)RNA and DNA D)cytoplasm 3) Which of the following does not describe an organism in the domain bacteria? A)Has a typical cell size of 10-100 micrometers. B)Is considered a prokaryote. C)Can use a flagella to swim in fluids. D)Contains a nucleod region.
Evolution of _______ increased the energy available to cells, making a larger genome and processes such as membrane trafficking possible. a. the nucleus b. endoplasmic reticulum c. chloroplasts d. mitochondria
Direct evidence of life on early Earth comes from fossils of microorganisms that lived 3.5 billion years ago. But how did the first living cells appear?
The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage of thepresence of free oxygen in the oceans and atmosphere?(A) the evolution of cellular respiration, which used oxygen tohelp harvest energy from organic molecules(B) the persistence of some animal groups in anaerobichabitats(C) the evolution of photosynthetic pigments that protectedearly algae from the corrosive effects of oxygen(D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteria
Describe the conditions or circumstances when organic material (i.e. living things) would not be preserved. There are 2 ideas for where life started. Describe both of them in terms of why or why not they are feasible.