Bio Midterm 1 Review

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1. What organic molecules make up the largest part of a cell membrane? a. Lipids
2. Which of the following is presumed to have been engulfed by an ancestral eukaryote and became a eukaryote organ? b. Chloroplast
3. Which of the following is correct about mitochondria?
c. Most cells plants contain a mitochondria
4. Horse eating hay is an example of?
d. a consumer eating a producer
5. Structure of ATP is MOST similar to the structure of?
e. RNA molecules
6. Two identical DNA molecules in a eukaryotic cell that are created through DNA replication are? f. sister chromatids
7. Replicating a DNA molecule involves adding nucleotides to an existing DNA strand g. Likely to be an endergonic process that requires energy 8. Gene expression must be more complex in multicellular eukaryotes than in prokaryotes because? h. Multicellular eukaryotes- different cells are specialized for different functions 9. When plants grow, where does new tissue come from?

i. Air
10. Living things maintain internal _______
j. Constancy
11. All living things come from other _______ things
k. Living
12. _________  is copied and passed to offspring ( the signature molecule of life) l. DNA
13. Adaption
m. The action or process of adapting or being adapted
14. Natural selection (Darwin)
n. Those who adapt the best to their enviorment will be the most likely reproduce and thrive 15. Evolution
o. The gradual development of something, esp. from a simple to a more complex form. 16. All living things share the same characteristics, what are they? * Living things are made of cells. * Living things grow and develop. * Living things reproduce.

* Living things respond to their environment.
* Living things adapt to their environment.
17. Hypothesis
p. Tenative and often narrow minded explanation regarding the natural world 18. Theory
q. a well substantiated explanation of some aspect of the natural world 19. Organic molecule
r. Componds containing both carbon and hydrogen
20. Polymers
s. chains created by linking subunits called monomers
21. What are the four types of Organic Molecules?
22. f
t. carbohydrates
u. lipids
v. nucleic acid
w. proteins

23. Carbohydrates ( what are the two main types?)
x. serves as a major energy source in the diet of animals. These compounds are produced by photosynthetic plants and contain only carbon, hydrogen, and oxygen, usually in the ratio 1:2:1. * 1) simple sugar 2) complex carbs

Lipids
* insoluble in water, that with proteins and carbohydrates constitute the principal structural components of living cells, and that include fats, waxes, phosphatides, cerebrosides, and related and derived compounds

Proteins
* any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the diet of all animals and other nonphotosynthesizing organisms, composed of 20 or more amino acids

Nucleic Acid
* storage and transmission of genetic information
* Two types in cells: DNA / RNA

24. Cells arise from other ____ and are the _____ unit of life y. cells/ smallest
25. Unicellular vs multicellular
z. 1 cell vs  any #'s of cells
26. Common traits of a cell
{. A cell membrane as a boundary between interior and exterior |. All cells have DNA as genetic material
}. RNA- production of protein with in the body
~. Ribosomes for protein manufacture
. Proteins that do cells work
. Cytoplasm- Jelly substance
27. Cell membrane characteristics
. Very thin, separates cytoplasm from exterior environment . Regulates what gets in and out
. 2 molecules thick

28. what are the two types of phospolipids?
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