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QUESTION 1A. Out of the four components of homeostasis, what component carries out the directions given by the integrating center? Stimulus Integrating Center Sensor Effector. Answer to Q 1A. D) Effector. Question 1B.

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question 1a

QUESTION 1A

Out of the four components of homeostasis, what component carries out the directions given by the integrating center?

Stimulus

Integrating Center

Sensor

Effector

answer to q 1a
Answer to Q 1A
  • D) Effector
question 1b
Question 1B
  • What mechanism requires a sensor that can detect a change in the internal environment?
  • A) Positive Feedback
  • B) Negative Feedback
  • C) Integrating Center
  • D) Dynamic Constancy
answer to q 1b
Answer to Q 1B
  • B) Negative Feedback
2a what is a hydrogen donor
2A. What is a hydrogen donor?
  • (a) base
  • (b) acid
  • (c) buffer
  • (d) electrolyte
2a what is a hydrogen donor1
2A. What is a hydrogen donor?
  • (a) base
  • (b) acid
  • (c) buffer
  • (d) electrolyte
2b what system of ions and molecules is used to prevent major changes in h
2B. What system of ions and molecules is used to prevent major changes in H+
  • Acid
  • Base
  • pH
  • Buffer
2b what system of ions and molecules is used to prevent major changes in h1
2B. What system of ions and molecules is used to prevent major changes in H+
  • Acid
  • Base
  • pH
  • Buffer
3a which is the strongest chemical bond

3A. Which is the strongest chemical bond?

Covalent Bond

Ionic Bond

Hydrogen Bond

All of the above

3b which of the following chemical bonds does not share its electrons
3B. Which of the following chemical bonds does NOT share its electrons?
  • Covalent Bond
  • Ionic Bond
  • Hydrogen Bond
  • None of the above
slide13
3C. When bonding with water, which chemical bond is responsible for many of the biologically important properties of water?
  • Hydrogen Bond
  • Ionic Bond
  • Covalent Bond
  • All of the Above
5a in order for a given reaction to occur with an enzyme the reactants must have sufficient

5A. In order for a given reaction to occur with an enzyme, the reactants must have sufficient ____.

A) temperature

B) enzyme

C) energy

D) catalyst

4a why are tetrads formed during metaphase 1 in meiosis

A) To prevent mutations

B) To form four identical daughter cells

C) To mix the chromosomes so that crossing over can occur

D) To help break down fructase

4A. Why are Tetrads formed during Metaphase 1 in Meiosis?

4b which cells in the body go through meiosis
4B. Which cells in the body go through Meiosis?
  • Sex Cells
  • Hemoglobins
  • Red & white blood cells
  • Heart cells
slide21
5B.

_____ are organic molecules, derived from water soluble vitamins that are needed for the function of particular enzymes.

  • A) cofactors
  • B) coenzymes
  • C)substrates
  • D) catalysts
question 6a

Question 6A.

What molecule enters the citric acid cycle during carbohydrate catabolism process?

Pyruvic acid

Citric Acid

Acetyl Coenzyme

Carbonic Acid

answer
Answer

C) Acetyl Coenzyme

question 6b
Question 6B

What is the 4th step in glycolysis?

  • 4 ATP made, 2 used
  • Pyruvic acid goes to citric acid cycle
  • NAD+ picks up 2H+ = NADH + H+
  • NADH + H+ goes to ETS
answer1
Answer
  • D) NADH + H+ goes to ETS
question 6c
Question 6C
  • During the electron transport system, how do the protons (H+) come back into the mitochondria matrix?

A)Through the third pump

B)By the diffusion through ATP synthase

C)First pump

D)Second pump

answer2
Answer
  • B) By diffusion through ATP synthase
7a with resting membrane potential the inner cell is of what charge
7A. With Resting Membrane Potential, the inner cell is of what charge?
  • Positive
  • Negative
  • Both positive and negative
  • No charge at all
7b which takes more time
7B. Which takes more time?
  • Absolute Refractory Period
  • Relative Refractory Period
  • Menstrual Period Potential
  • Nuclear Refractory Period
8a q what increases the speed of an action potential conduction

8A. Q: What increases the speed of an action potential conduction?

Increased diameter of the axons

Myelination

A and B

None of the above

8b q where are action potentials produced in myelinated axons

8B. Q: Where are action potentials produced in myelinated axons?

Postsynaptic axons

Nodes of Ranvier

Presynaptic axons

Dendrites

9 a lab 1 3
9.A Lab 1.3
  • _____________ is the maintenance of a constant internal environment within an organism.
slide39
9B.
  • Homeostasis is maintained by the sensors that send information to the _____________ which detect deviations from the ____________. Then a signal is sent to the ____________ that counters the change the internal environment.
slide40

Homeostasis is maintained by the sensors that send information to the integrating center which detect deviations from the set point. Then a signal is sent to the effectors which counters the change the internal environment.

slide41
9C.
  • Give an example of a negative feedback loop that occurs after you eat.
slide42

After eating, a person’s blood glucose rises above normal levels. The pancreas then secretes the hormone insulin that increases the cellular uptake of glucose. This results in a decrease of the blood glucose levels to normal range.

10a dna lab
10A. DNA lab

1. _______ replication produces two identical molecules containing a _____ and a ______.

answer3
Answer

Semiconservative

Parent Strand

Daughter Strand

10b dna lab
10B. DNA lab

______ & ______ found that DNA is the hereditary material injected into the cell. The technique they used to follow DNA or proteins of the phage was with radioactive _____ & _____.

answer4
Answer

Hershey & Chase

Phosphorus & Sulfur

10c dna lab
10C. DNA lab

The structure of DNA is a ________ containing 3 components known as a ___ , _________ , and a ____________.

answer5
Answer

Double-helix

Base, Sugar (deoxyribose), Phosphate group

11a ex 1 1
11A. Ex. 1.1
  • If the diameter of the field of vision is equal to 178 um, what is it equivalent to in
  • a) nm
  • b) cm
11b lab ex 2 4
11B. Lab Ex. 2.4
  • In the chemical reaction NAD  NADH + H, to gain H is to be ________
slide53
11C.
  • Proteins that catalyzed a reaction _____ the rate of reaction
slide55

12. Lab Topic: PhysioEx1 Cell Transport-Create 3 fill-in-the blank or problem solving questions; may include critical thinking questions from CD ROM activities or post lab handout.

  • 1_________________ is the even dispersion of solutes throughout solution.
  • 2_________________ is the movement of molecules from a region of higher concentration to a region of lower concentration.
  • 3.Facilitated diffusion is a passive movement and down a ________________.
slide59

13b. THE ENERGY IN THE STIMULUS IS CHANGED INTO AN ELECTICAL RESPONSE THAT INVOLVES THE OPENING AND CLOSING OF MEMBRANE ION CHANNELS. THE PROCESS THAT PRODUCES THIS CHANGE IS CALLED ___________.

14a 3 3 lab
14A. 3.3 Lab
  • In the ____________, the neural pathway goes into the spinal cord on the dorsal roots of the spinal nerves, then back to muscle fibers, and contract the muscle to relieve a stretch.
answer to 3 3 lab
Answer to 3.3 Lab
  • Muscle stretch reflex
14b 3 4 lab
14B 3.4 Lab
  • Do the areas of cortex responsible for different parts of the body correspond to the size of the body parts being served? Give an example to explain your answer.
answer to 3 4 lab
Answer to 3.4 Lab
  • No, the areas of the cortex do not correspond to the size of the body parts being served. Instead they correspond to the levels of density of receptors. For example, the lips are relatively smaller than other body parts of the body, but they contain a very high density of receptors in compare to other body parts like the trunk of the body even though the trunk is larger. And the lips are also represented by a larger part of the sensory cortex in compare to the trunk of the body.
slide67
14 C.
  • The action potential, which is caused by stimulating the sensory receptors that are conducted into the spinal cord by sensory neurons, which travel to conduct impulses out of the spinal cord to the muscles to stimulate a contraction is called a _______________.
slide68

The action potential, which is caused by stimulating the sensory receptors that are conducted into the spinal cord by sensory neurons, which travel to conduct impulses out of the spinal cord to the muscles to stimulate a contraction is called a reflex arc.