Test 5

The fingers are ______ to the wrist.

What is the main, general purpose of negative feedback?

To keep the body's blood sugar level high

To maintain homeostasis

To regulate excretion via the kidneys

To control body movement

A good example of a positive feedback mechanism would be _____________.

Enhancement of labor contractions

Blood calcium level regulation

Regulating glucose levels in the body

Body temperature regulation

What is a vertical section through the body, dividing it into anterior and posterior regions?

Transverse

Median

Frontal

Sagittal

The parietal pleura would represent a serous membrane ___________.

Covering individual lungs

Lining the thoracic cavity

Lining the abdominal cavity

Covering the heart

Homeostasis is the condition in which the body maintains ____________.

A dynamic state within an unlimited range, depending on circumstances

A relatively stable environment, within limits

The lowest possible energy usage.

A static state with no deviation from preset poits

Place the following in correct sequence from simplest to most complex: 1. molecules, 2. atoms, 3. tissues, 4. cells, 5. organs

1-2-4-3-5

1-2-3-4-5

2-1-3-4-5

2-1-4-3-5

Which of these is not part of, or found in, the dorsal cavity?

Kidney

Cranial cavity

Brain

Vertebral cavity

What is a section through the body, dividing it into left and right called?

Regional

Frontal

Transverse

Sagittal

Each daughter cell resulting from mitotic cell division has as exactly as many chromosomes as the parent cell.

True

False

Condensed chromosomes are visible throughout interphase.

True

False

The nuclear membrane fragments during metaphase.

True

False

The correct sequence of the phases of mitosis is prophase, metaphase, anaphase and telophase.

True

False

Sister chromosomes are joined by a centromere.

True

False

The role of kinetic microtubules is to force the poles of the cell apart.

True

False

Metaphase is characterized by __________.

Chromosome replication

Division of the cytoplasm

Chromosomes aligning at the cell equator

Chromosomes getting pulled to opposite poles

Which of the following best describes anaphase?

Chromosomes align on the cell's equator

Chromatids separate

Centrioles separate

Nuclear membrane reforms

If a cell has 12 chromosomes before mitosis, each daughter cell will have how many chromosomes?

Cytokinesis is defined as _____.

The sum total of energy in a cell

Division of the cytoplasm

Division of the nucleus

Cellular movement

Which of the following best describe interphase?

Period between cell formation and reproduction

Cell growth and normal metabolic activity

One or more nucleoli are visible

All of the above

Mitosis _______.

Occurs continuously in all mature cells

Creates two genetically different cells

Is the formation of sex cells

Is division of the nucleus

Catabolism would be best described as a process that ________.

Elevates glucagon levels

Breaks down complex structures to simpler ones

Cause a decline in circulating ketone bodies

Builds up triglycerides during the postabsorptive state

Electrons are passed along the electron transport chain until they are ultimately accepted by _______.

ADP

Hydrogen

Oxygen

ATP synthase

Oxidation reduction reactions ________.

Are rarely coupled together

Involve the exchange of hydrogen and electrons

Occur via the gain of ATP or the loss of ADP

Utilize phosphorylases

Which of the following describes the intermediate step leading to the Krebs cycle?

NAD is reduced to NADH

CO2 is produced

Acetyl CoA is formed

A,B and C

What process primes a molecule to change in a way that increases its activity, produces motion, or does work?

Cellular respiration

Glycolysis

Phosphorylation

Beta oxidation

Which of the following does not occur in the mitochondria?

Glycolysis

Krebs cycle

Electron transport

Oxidative phosphorylation

The primary function of cellular respiration is to _______.

Effectively monitor the energy needs of the body

Determine the amount of heat needed by the human body

Break down food molecules and generate ATP

Provide the body with adequate amounts of vitamins and minerals

Which of the following describes how glucose enters the cell?

Primary active transport

Transcytosis

Pinocytosis

Facilitated diffusion

The external environment is a source of fuel and a catch basin for waste products..

True

False

Processes that break down complex molecules into simpler molecules are anabolic.

True

False

In the absence of oxygen pyruvic acid is reduced to lactic acid.

True

False

Glycolysis can only occur in the presence of oxygen.

True

False

The electron transport chain is located within the outer mitochondrial membrane.

True

False

Once it is formed, pyruvic acid enters the Krebs Cycle.

True

False

Four ATP molecules are initially invested at the beginning of glycolysis.

True

False

Test 5

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