The _______________ is a dense irregular connective tissue sheet surrounding an entire muscle.

What is the role of hemoglobin in the body

Klio2033 [76]

Hemoglobin is found in the red blood cells and are responsible for binding onto oxygen molecules. By binding to the oxygen, it can transport it to through out the body where it is needed.

6 0

3 years ago

Read 2 more answers

In this lab, you will be using black worms ( Lumbriculus variegatus) to investigate the effects of various chemicals on their pu

Leni [432]

Answer: All the above options are correct about the characteristics of Lumbriculus variegatus.

Explanation:

Lumbriculus variegatus also called the black worm belongs to the phylum Annelida and is used by biologists to illustrate:

-blood vessel pulsations,

-swimming reflex,

-peristaltic crawling behavior,

-giant nerve fiber action potentials.

These studies where carried out on them due to the characteristics they possess. These includes:

-its blood circulates in a closed circulatory system

-Freshwater worm found throughout North America and Europe

-Prefers the shallow habitats found at the edges of ponds, lakes, or marshes

-Feeds on decaying vegetation and microorganisms.

4 0

3 years ago

Mr. Habetler is deciding where to plant his crops at the beginning of the planting season. He begins by planting his tomato plan

hram777 [196]

Answer is A. It cant be B because they are to close together and it cant be C because some of the seeds are also to close together. Hope this helps!! :)

6 0

2 years ago

As described in "A Note About Bacterial Reproduction -- and the "Culture Bias,"" the organism Epulopiscium does not divide by bi

gayaneshka [121]

In liquid media or broth difference between dry and wet will give biomass of the Epulopiscium.

Explanation:

Biomass of bacteria can be measured by dry or wet mass. Bacteria numbers can be counted by spread plate method under the microscope.

In solid media the colonies obtained are diluted and number of cells will be seen by plate count method or on automated cell counter. The number would help calculate biomass

The biomass will be calculated by measuring wet and dry mass. Equipments required will be:

hydraulic gravity convection oven and centrifugation set up.

A cellulose acetate filter membrane is used which is 47 mm in diameter and 0.45 micron of pore size.

The cells grown settles down due to gravity. They are stirred to evenly spread in the broth and is kept in centrifuge.

The cells obtained after centrifugation will be taken and wet weight is obtained.

To obtain dry weight the cells are placed in oven for 6 hours to 24 hours. The resultant cells are weighed and dry weight obtained.

Biomass will be calculated by subtracting the wet mass to dry mass. This way biomass is obtained in epulopisicuium. Here the cells will be of different size so on centrifugation 2 or more phases of cells can be seen due to gravity change.

8 0

3 years ago

In this assignment, you will write a story about how different foods travel through the digestive and excretory system from the

Reika [66]

d health

are explained on a nutrient level. The connection

of nutrients to dietary choices begins. Proteins,

Carbohydrates (aka “carbs”), Fats, Minerals,

Vitamins and Water are defined as the major

nutrient groups.

Focus and Engage

■ This chapter will make the students aware of the

food choices they make.

■ Help the students learn to evaluate foods for

nutritional quality.

■ Encourage the students to understand their

bodies’ needs.

Introduce the Section

a. Encourage the students to be aware of the varied

food choices available to them.

b. Discuss new food options and ideas with the

students.

c. Help the students to realize that nutrition is a

science, not just an opinion or a feeling.

2 Chapter 1 ■ The Food You Eat

1 The Food You Eat

Have you ever wondered how the food you eat fuels your body?

Why some foods make your body feel and perform better than others? Nutrition has the answers. The more you know about nutrition,

the better you will be able to make food choices that will keep you

healthy and strong and keep your body functioning optimally.

Adequate nutrition can help prevent certain diseases, maintain an

optimal body weight, and give you more energy to participate in the

activities you enjoy. There are six essential nutrients in the human

diet. Take a look at what’s on the menu in your school cafeteria

today, and see if you can identify items that contain these nutrients.

In This Chapter,

You Will . . .

■ Understand the science of

nutrition

■ Learn how proteins, carbohydrates, and fats comprise the

foods you eat

■ Learn about the benefits of

vitamins, minerals, and water

■ Discover what calories are and

how they are calculated

■ Learn about food additives

such as flavor enhancers,

preservatives, and coloring

Why YOU Need to Know This

2

Advance PreparationUSDA nutrient database (www.nal.usda.gov)

FDA Web site for label reading (www.cfsan.fda.gov)

Prepare Students will need colored pencils or markers

Paper for graphic organizers

Pop-beads—small costume jewelry or large baby toys that connect

Index cards or small pieces of paper

7 0

3 years ago

Read 2 more answers