chapter 11 mastering biology

Which discovery supports the hypothesis that evolution of the lactase-persistence trait was driven by the use of milk in pastoralist cultures?

Ancient pots used to hold milk are about the same age as the lactase-persistence mutations.

Authority What is the affiliation of the writer?

It's not clear who wrote the content on this page.

What did researchers discover about the genetic mutation causing lactase persistence?

It is found in a regulatory region (a "switch") upstream of the lactase gene.

inorganic nutrients called _________ function in various roles such as and ingredient of hemoglobin

Minerals

When it comes to decreasing risk of death from cancer, according to this study, which of the following is true?(Strength Exercise as Vital as Aerobic New Research Finds (Science Daily, 11/1/2017) )

Strength training is more important than aerobic exercise.

On what basis is the writer primarily appealing to his or her readers?

The writer is appealing to the readers' emotions.

in _______ Diabetes no insulin es produced

Type 1

in _______________ diabetes , glucose levels remain higher than normal

Type 1 and type 2

in ___________ diabetes, target cells do not respond normaly to insulin

Type 2

Suppose that a mutation for lactase-persistence occurred in each of the populations described below. In which populations would the mutation be more likely to increase in frequency over time because of natural selection?

a population that raises wheat and sheep

the ____________ must be obtained from your diet eaither by eating meant eggs or mil or by consuming a variety of plants and proetein

essential amino acids

one of the ___________ is needed to make membrane phospolipds

essential fatty acids

you diet provides ___________ for ATP production_________________ as raw materials to build your own molecules and essential nutrients substance you require but can not make your self

fuel organic molecules

The enzyme lactase breaks the sugar lactose into which compound(s)?

galactose glucose

First impression t. On a scale of 0 to 6, where 6 is the most trustworthy, how would you rate this site?

0-1 (not trustworthy at all)

How does the term "lactase persistent" relate to the term "lactose tolerant"?

A lactase-persistent person is lactose tolerant.

identify the structures of the human digestive system? Drag the labels to their appropriate locations in this diagram.

A= oral cavity B= pharynx C= Salivary Glands D=esophagus E=Liver F= Stomach G=Gallbladder H = Pancreas I= Small Intestine J= Lg intestine K= Rectum L= Anus

Your body must fully break down food so that your cells can use its component molecules for energy and for building materials.

Ingestion= The first stage of food processing, also called eating Digestion= The Hydrolysis of food Molecules Into Smaller Buildings blocks Absorption= The taking up of broken down food molecules by cells for transport to the bloodstream Elimination= the removal of undigested food mater from the body

You are a physician. A patient asks you about strength training. Based on this study, which of the following do you recommend?(Strength Exercise as Vital as Aerobic New Research Finds (Science Daily, 11/1/2017) )

Lifting weights or doing own bodyweight exercises, as both work equally well.

There are two types of digestion: mechanical digestion and chemical digestion. sort the following

Mechanical Digestion= stomach muscles Churn Food & Teeth chew and grinds up food Chemical Digestion = Enzymes in your stomach break down food proteins into amino acids carbohydrates in to saga monomers

How could milk-drinking have provided strong favorable selection for lactase persistence?

Milk is protein and fat-rich and therefore could have been an important, high-quality food source. Milk may have been a critical food source during times of famine. Milk was safer to drink than water and reduced exposure to pathogens.

According to this study, which of the following is true?(Strength Exercise as Vital as Aerobic New Research Finds (Science Daily, 11/1/2017) )

People are more likely to do aerobic exercise than strength training.

Four individuals measured their baseline blood glucose, then drank a litre of milk. They then measured their blood glucose levels at regular 15 minute intervals for 60 minutes. The results are shown in the graph below. Which individuals are lactase-persistent?

Peter Sarah

Assuming the population of the United States is similar to Australia, which of the following is true?(Strength Exercise as Vital as Aerobic New Research Finds (Science Daily, 11/1/2017) )

The majority of people in the United States are not meeting strength training recommendations or aerobic exercise recommendations.

According to this study, which of the following should you do to reduce your mortality risk the most? (Strength Exercise as Vital as Aerobic New Research Finds (Science Daily, 11/1/2017) )

aerobic exercise and strength exercise

What do you find when you click these links?

the links redirect the reader to other PETA articles.

Motivation What seems to be the main purpose of the article ?

to convince readers not to eat meat

organic nutrients called _______________ are required in very small amounts for example ______________ is required for the production of connective tissue.

vitamins vitamin C