What is the difference between ventilation, gas exchange and cell respiration?

What can you conclude about fossil by looking at the layers of rock?

Murrr4er [49]

Answer is B. The fossils in the lower layers are older than the fossils in the upper layers.

8 0

3 years ago

1. Scientists believe that ancient ancestors of all animals were (1 point) A) single-celled prokaryotes that reproduced asexuall

Bess [88]

Scientists believe that ancient ancestors of all animals were single celled eukaryotes that sometimes grew in colonies. The correct option among all the options that are given in the question is the second option or option "B".

The Cambrian Explosion resulted in the evolution of the first representatives of most animal phyla. The correct option among all the options that are given in the question is option "B".

4 0

3 years ago

Read 2 more answers

Describe the information displayed by ecological pyramids Use all three pyramids (number, biomass, and energy in your answer.

kumpel [21]

Explanation:

Edit

An ecological pyramid (also trophic pyramid, Eltonian pyramid, energy pyramid, or sometimes food pyramid) is a graphical representation designed to show the biomass or bioproductivity at each trophic level in a given ecosystem.

A pyramid of energy represents how much energy, initially from the sun, is retained or stored in the form of new biomass at each trophic level in an ecosystem. Typically, about 10% of the energy is transferred from one trophic level to the next, thus preventing a large number of trophic levels. Energy pyramids are necessarily upright in healthy ecosystems, that is, there must always be more energy available at a given level of the pyramid to support the energy and biomass requirement of the next trophic level.

A pyramid of energy shows how much energy is retained in the form of new biomass at each trophic level, while a pyramid of biomass shows how much biomass (the amount of living or organic matter present in an organism) is present in the organisms. There is also a pyramid of numbers representing the number of individual organisms at each trophic level. Pyramids of energy are normally upright, but other pyramids can be inverted or take other shapes.

Ecological pyramids begin with producers on the bottom (such as plants) and proceed through the various trophic levels (such as herbivores that eat plants, then carnivores that eat flesh, then omnivores that eat both plants and flesh, and so on). The highest level is the top of the food chain.

7 0

3 years ago

Spectator at or comes from the Latin specs meaning

OLEGan [10]

"Spec", or the variation "specs" is the Latin word for "see". The word "spectator" means "someone who watches".

7 0

3 years ago

In order to understand how the food you eat helps to fuel your body during exercise, you must first be able to use the vocabular

gtnhenbr [62]

Answer:

1. Cardiorespiratory exercise, also known as aerobic

exercise, uses oxygen and typically involves using large muscle groups during continuous activities.

2. Your body produces energy under anaerobic conditions during the first few seconds of intense exercise.

3. When the end phosphate is hydrolyzed from an ATP molecule, ADP is formed, and energy is released.

4. CP (Creatine phosphate) is stored in the muscles and is broken down to replenish ATP stores.

5. When participating in low-intensity activities over a long period of time, the body primarily uses fat for energy.

6. A small amount of amino acids

can be utilized for energy production during endurance events, but their primary role is to promote muscle growth and help with repair.

7. Your body burns carbohydrates for energy during every type of exercise that lasts longer than three seconds. Intensity and duration of exercise will affect the percentage of energy that is derived from this source.

8. Endurance athletes may use a training strategy known as carbohydrate loading to maximize their body's glycogen stores.

9. The body's preferred carbohydrate source for energy during very high intensity exercise is muscle glycogen.

Explanation:

The correct question includes the following incomplete sentences:

1. Cardiorespiratory exercise, also known as ________ exercise, uses oxygen and typically involves using large muscle groups during continuous activities.

2. Your body produces energy under _______ conditions during the first few seconds of intense exercise.

3. When the end phosphate is hydrolyzed from an ____ molecule, ADP is formed, and energy is released.

4. ____ is stored in the muscles and is broken down to replenish ATP stores.

5. When participating in low-intensity activities over a long period of time, the body primarily uses ____ for energy.

6. A small amount of _______ can be utilized for energy production during endurance events, but their primary role is to promote muscle growth and help with repair.

7. Your body burns _______for energy during every type of exercise that lasts longer than three seconds. Intensity and duration of exercise will affect the percentage of energy that is derived from this source.

8. Endurance athletes may use a training strategy known as _________ to maximize their body's glycogen stores.

9. The body's preferred carbohydrate source for energy during very high intensity exercise is _________.

Words to complete are:

anaerobic
carbohydrate loading
ATP
carbohydrates
aerobic
amino acids
fat
muscle glycogen
CP

Physical exercise involves the additional consumption of oxygen and nutrients to compensate for the increased energy demand that such activity entails.

In general, the body uses the energy metabolism to obtain the energy necessary to carry out its functions.Under normal conditions, energy in the form of ATP is obtained from glucose, a carbohydrate, which requires oxygen, to perform aerobic metabolism.

The different types of physical exercise will require, according to their intensity and duration, alternative metabolic pathways, which include the use of lipids and proteins as an energy substrate, as well as anaerobic metabolism, which does not require oxygen, but whose energy output is lower.

The body's carbohydrate reserves are found in the liver and muscle tissue in the form of a glucose polymer called glycogen. Carbohydrate loading is a technique used by high-performance athletes to store as much glucose as possible, with a special and appropriate diet of low-calorie carbohydrates.

Creatine phosphate (CP) -found in muscle- is a donor molecule of phosphate groups, necessary for the production of ATP, through the action of the enzyme creatine phosphate kinase (CPK).

7 0

3 years ago