BIO SCI 55 Lecture Notes - Lecture 4: Positive Feedback, Negative Feedback, Fallacy

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brownhamster684

8 Nov 2016

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Finally this summary note on the scientific method. Sets of (cid:498) well confirmed gyotheses? which is to say . good ttheories are hiererchial. A set of interrelated statements with empirical examples: interrerelated statements: well confirmed hypotheses. A good theory is like a pyramid: a little at the top, more and more as you go lower down toward the base. Organisms behave selfishly ( animals, plants, fungi, bacteria) Spiders and humans behave selfishly important points about theoreies. They are not the same as hypotheses. They are not (cid:498)more theories(cid:499) as the public would often have it. Good theroeies are few and far between, and the word should be used advisedly by anyone who is educated !! The need for order: is an acient and universal human trait, order ( hypotheses, generealizations, theories) are the basis of predictions, small and large. Corrective against believing what we want to veliebe. Role in science- peer review and replication.

Related Questions

While Jill and Andre were studying for their Biology exam, Andre said, âAnimals perform cellular respiration and plants perform photosynthesis.â What about Andreâs statement should Jill have told him was incomplete?

Animals also perform photosynthesis.

Plants do not perform photosynthesis.

Animals do not perform cellular respiration.

Plants also perform cellular respiration.

There is nothing incomplete about Andreâs statement.

Question 3

Select one answer.

10 points

Select the incorrect statement regarding respiration and fermentation from the list below.

Respiration produces much more ATP than fermentation

Respiration produces acidic products, fermentation does not.

Both respiration and fermentation use organic molecules.

Respiration uses oxygen, fermentation does not.

Question 4

Select one answer.

10 points

Energy is harvested from which reaction to produce ATP?

Carbon dioxide and water â sugar and oxygen.

Sugar and oxygen â carbon dioxide and water.

Question 5

Select one answer.

10 points

What is the source of energy for photosynthesis?

Light

CO2

Water

Sugar

Question 6

Select one answer.

10 points

One way to explain how cellular respiration and photosynthesis relate to each other is to say that:

Plant cells use the oxygen produced by respiration for photosynthesis.

The oxygen produced by photosynthesis, once released to the environment, is the oxygen able to be used as the electron acceptors for cellular respiration.

Cellular respiration is a series of reduction reactions while photosynthesis is a series of oxidation reactions.

The two processes are not related.

The use of oxygen by plants contributes to the greenhouse effect.

Question 7

Select one answer.

10 points

The calculated net amount of ATP produced from one glucose molecule during aerobic respiration in eukaryotes is

100

Question 8

Select one answer.

10 points

All of the following statements is true of photosynthesis, EXCEPT:

Releases CO2

Releases oxygen

Glucose is produced.

Water is required

Question 9

Select one answer.

10 points

Which of the following is an anabolic pathway?

photosynthesis

cellular respiration

fermentation

all of these processes

Question 10

Select one answer.

10 points

Plant leaves contain many different pigments. What is the purpose of having multiple pigments?

Capture light for photosynthesis at different wavelengths.

To absorb light that may harm the photosynthetic machinery.

To give leaves different colors in the fall.

orchidpig270

1) What is the point of sequencing Neanderthal DNA?

To look at haplotypes, and how they compare to those in Modern Humans.

The point is only to learn more about all extinct species.

To find identifying genetic markers in populations.

To lay the Neanderthal and Human sequences side by side, base pair by base pair, and identify exactly where they diverge.

2)What is one of the main complications of sequencing the Neanderthal Genome?

There are no ccomplications with sequencing the Neanderthal genome.

Neanderthals lived to long ago to even think about havung any preserved genetic material.

Over time, DNA mutates. If too much time has passed, the DNA will not be the same as the original individual's.

Over time, DNA degrades and breaks down leaving only fragmented pieces of DNA.

3)In the last several thousand years, the majority of human evolution has NOT been

Physical

Cultural

The majority of evolution has not been happening in the last several thousand years.

Biological

4) Which of the following best describes the relationship between humans and other animals?

According to the evidence, humans share a common ancestor with primates and carnivores, but not with birds and reptiles.

Humans have existed longer than other animals. This explains our superiority and relative complexity.

We do not have enough evidence to create testable hypotheses about the relationship between humans and other animals.

Humans are primates, and share common ancestors with all other animals, including dinosaurs.

1.This week, you will be conducting Gram stains of bacteria.Which of the following statements are true? (Mark all thatapply)

		Gram-negative bacteria do not stain purple because they do nottake-up crystal violet or iodine
		The peptidoglycan in the walls of Gram-positive bacteria bindsto the crystal violet stain more easily than walls of Gram-negativebacteria do
		Gram-positive bacteria have cell walls with a thickerpeptidoglycan layer than walls of Gram-negative bacteria
		Gram-negative bacteria do not stain purple, because their cellwall structure allows purple-colored iodine-dye complexes to washout of the cells more easily than the cell wall structure ofGram-positive bacteria does
		Gram-negative bacteria have an outer membrane (outside thepeptidoglycan layer in their wall) that Gram-positive bacterialack

What evidence is used to inform our understanding ofrelationships among species? (mark all that apply)

		Biochemical similarities between existing species
		Fossils
		Morphological similarities between existing species (presence ofhair, backbones, etc.)
		DNA sequences and molecular clocks

For each of the groups of organisms below, indicate whether theybelong in (A.) Archaea, (B.) Bacteria, or (C.) Eukarya

- A. B. C.	Methanogens (prokaryotes that produce methane)
- A. B. C.	Gram-positive bacteria
- A. B. C.	Fungi
- A. B. C.	Animals
- A. B. C.	Cyanobacteria
- A. B. C.	Green algae
- A. B. C.	Red algae
- A. B. C.	Amoebas
- A. B. C.	Thermophiles (prokaryotes of hydrothermal vents)
- A. B. C.	Plants
- A. B. C.	Free-living relatives of mitochondria
- A. B. C.	Single-celled organisms with a circular strand of DNA, without anuclear envelope and without peptidoglycan in their cell walls

Select all true statements about the relative diversity ofdifferent groups of organisms from among the followingstatements:

		There are more species of plants on Earth than species ofmolluscs
		There are more plant species on Earth than mammal species
		There are more species of plants on Earth than species offungi
		There are more species of fungi on Earth than mammal species
		There are more species of plants on Earth than species ofarthropods
		There are more flatworm species on Earth than mammal species

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BIO SCI 55 Lecture Notes - Lecture 4: Positive Feedback, Negative Feedback, Fallacy

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