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BIOCHEMISTRY Study Guide - Neanderthal, Homo Heidelbergensis, Homo Habilis

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5 Nov 2022

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University of Santo Tomas

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Xgcs | 2nd quarter | evolution: origin of humans. Homo habilis: humans are closely related to primates, name means handy man . Humans are primates: hominoid group (hominidae) Evolution of homo sapiens: ardipithecus ramidus, australopithecus afarensis, homo habilis, homo erectus, homo heidelbergensis, homo neanderthalensis, homo sapiens (modern man) First stone tools appear around this time: appeared 2. 4 million years ago, first distinct human ancestor, lived in a predominantly grassland environment, changes. Thick enamel in the teeth suggests that homo habilis is an omnivore. Homo erectus: homo erectus = out of africa , appeared 2 million years ago, changes. More brain enlargement based on the shape of its skull. Ardipithecus ramidus: longer infancy, most likely the first hominid, appeared in africa 4. 4 million years ago, walked upright some of the time . Not all scientists believe that ardi was a true hominid since habitual upright posture is not a defining feature of a hominid.

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Related Questions

Human hemoglobin (first 30 amino acids)
H) hltpeeksav talwgkvnvd evggealgrl
A) mltaeekaav tafwgkvkvd evggealgrl
B) dwtdaeraai vslwgkinva eigpqalarl
C) hwtgeekalv navwtktdhq avvakalerl
D) hwtaeekqli tglwgkvnva ecgaealarl
E) hltpeeksav talwgkvnvd evggealgrl

Which sequence is the most related to human hemoglobin?
Which sequence is the least related to human hemoglobin?
Name an amino acid (position) that is conserved in all speciesabove.

Answer the remaining questions from the chart below. Assuming aminoacid changes in hemoglobin accumulate at about 1 change in astretch of 30 amino acids every 25 million years, how long havedifferences been accumulating between humans and hemoglobinsequence A? between humans and hemoglobin sequence number C?Between sequences D and E? From the data and the chart below, whatanimalâs hemoglobin is
sequence D likely to be?

Match the animalsâ hemoglobin sequences you studied above to theanimals
below:

Chimp Shark Fish Cow Chicken

EXPERIMENT 5 Don't Get Stressed in the Lab "What a piece of work is a man! How noble in reason! How infinite in faculty! In form and moving how express and admirable! In action bow like an angel! -Hamlet 2.2 Hamlet's awe of humans is no wonder when one considers the amazingly complex intricacies of life. Chemical interactions are constantly taking place within us, regulating, maintaining, and adapting to change. We exist continually in a delicate state of balance between our internal components and the environment. For example, iron aids in the transport of oxygen to the body, which is essential for life. Red blood cells contain hemoglobin, which is a protein that is bound to iron. It is the iron that allows an oxygen molecule to attach to the hemoglobin in order to transport oxygen throughout the body. When the body experiences a deficiency in iron, the amount of oxygen being transported to the body is reduced. Therefore, the body is not able to function at full capacity, resulting in shortness of breath, dizziness, etc. This is called iron deficiency anemia. In order to increase the amount of iron in the body, doctors suggest eating foods high in iron, such as eggs and lean meats. However, people suffering with chis disease are also made aware chat the absorption of firon into the body is dependent on the extent to which iron remains soluble. Iron is easily absorbed when present in acidic conditions. Therefore, intake of iron with orange juice that contains ascorbic acid will increase the intake by the body. (The ascorbic acid also keeps iron in the +2 state which is more soluble.) Once enough iron has been taken in by the body an equilibrium is once again reached. The phenomena of chemical equilibrium is taking place all around us.Chemical equilibrium is never static; it is in constant motion. That motion is a balance between the rate of the forward reaction with the rate of the reverse process. This dynamic equilibrium is the result of the chemical reaction simultaneously producing products while also reverting back to reactants at an equal rate. The mol- ecules are constandy changing; therefore, being dynamic; however, being at equilbrium means the concentrations of the products and reactants have stopped changing.