Mechanism of Action of Hydrophilic Hormones

Q.

If a cell is placed in hypotonic solution what will happen to it?

1. (a) The cell will swell and burst

2. (b) The cell will become flaccid

3. (c) It will remain unchanged

4. (d) None of the above

Q.

Mention two functions of golgi apparatus.

Q.

Estrogen and testosterone are steroid hormones and most likely bind to

1. Membrane ion channels

2. Enzyme-linked membrane receptors

3. G-protein-linked membrane receptors

4. Cytoplasmic receptors

Q.

Hormones are chemical signals that stimulate specific target tissues. Their specificity is due to the presence of signal receiving ‘receptors’ only in the respective target tissues. Where are these receptors present in case of hormones of protein nature.

1. Extra cellular matrix

2. Blood

3. Plasma membrane

4. Nucleus

Q.

if the ribosomes of the cell are destroyed then

1. Respiration will stop

2. Fats will not be stored

3. carbon assimilation will stop

4. proteins will not be formed

Q.

Hormone receptors present on the cell membrane of the target cells are called ________ and the receptors present inside the target cells are called ________.

Q.

SER detoxifies many poisons and drugs.

1. True
2. False

Q.

State whether the following statements are True or False. If False, rewrite the correct form of the statement by chang­ing the first or the last word only.

1. Centrosome is the organelle of the cell that initiates cell division.

1. True
2. False

Q.

Which of these options are not the function of ribosomes?

(i) It helps in manufacture of protein molecules. (ii) It helps in manufacture of enzymes. (iii) It helps in manufacture of hormones.

(iv) It helps in manufacture of starch molecules.

1. (a) i and ii

2. (b) ii and iii

3. (c) iii and iv

4. (d) iv and i

Q.

Guess the word:

I am a flat stack of tubes involved in “packaging” materials that will exit the cell.

Q. ___ differentiates the rough and smooth endoplasmic reticulum.

Q.

Guess the word:

I am a system of tubes through the cytoplasm. I am involved in transporting materials.

Q.

Which of the following is not a function of Golgi apparatus?

1. Packaging of proteins

2. Modification of proteins

3. Formation of lysosome

4. Protein synthesis

Q. I have a network of membranes. I help the cell manufacture fat molecules called lipids. Who am I?

1. Golgi Apparatus
2. Rough ER
3. Ribosome
4. Smooth ER

Q.

How can a plant live without brain?

Q. In the mechanism of action of protein hormones, one of the second messengers is

1. Cyclic AMP
2. Insulin
3. Gastrin
4. Inositol triphosphate

Q. Which of the following statements is true for protein hormones?

1. They do not enter target cells
2. They interact with membrane-bound receptors and generate second messengers inside the cell
3. They interact with intracellular receptors and generate second messengers inside the cell
4. Intracellular receptor-hormone complex interacts with the organism's genome

Q.

Differentiate between the following pair on the basis of what is indicated in the brackets

Hypotonic solution and hypertonic solution (condition of a plant cell when placed in them).

Q. According to accepted concept of hormone action, if receptor molecules are removed from target organs, then the target organ will

1. Continue to respond to hormone, but in opposite way
2. Continue to respond to the hormone without any difference
3. Continue to respond to hormone, but will require higher concentration
4. Not respond to the hormone

Q. Which of the following cell organelle helps in packaging of proteins?

1. 
2. 
3. 
4. 

Q. What would happen to a red blood cell (RBC) placed in a solution of high salt concentration?

1. The cell will resist osmosis due to its non permeable membrane.
2. The cell will shrink as it loses water to the salt solution.
3. The cell will stay the same size.
4. The cell will swell up and burst.

Q. For the action of hydrophilic hormones, second messengers are generated only when the hormone binds to cell surface receptors.

1. False
2. True

Q.

Which of the following is not a function of Golgi apparatus?

1. Modification of proteins

2. Protein synthesis

3. Formation of lysosome

4. Packaging of proteins

Q.

Choose the correct answer from each of the four options given below

A plant cell may burst when

1. turgor pressure equalizes wall pressure

2. turgor pressure exceeds wall pressure

3. wall pressure exceeds turgor pressure

4. None of the above

Q. The cell organelle involved in forming complex sugars from simple sugars are ________.

1. Plastids
2. Golgi apparatus
3. Endoplasmic reticulum
4. Ribosomes

Q. is a function of smooth endoplasmic reticulum.

1. Enzyme synthesis
2. DNA synthesis
3. Protein synthesis
4. Lipid synthesis