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- Question
Which of the following is not true of graded potentials?
Options- A. They can form on receptor endings
- B. They increase amplitude as they move away from the stimulus point
- C. They are short-lived
- D. They can be called postsynaptic potentials
- Correct Answer
- They increase amplitude as they move away from the stimulus point
ExplanationGraded potentials are changes in membrane potential that vary in size, as opposed to being all-or-none.
In the given options, They increase amplitude as they move away from the stimulus point is not true about the graded potentials.
- 1. All of the following are fat-soluble vitamins except
Options- A. Vitamin C
- B. Vitamin D
- C. Vitamin A
- D. Vitamin K Discuss
- Vitamin A
- Vitamin D
- Vitamin E
- Vitamin K
- 2. Gastrulation is the process that directly forms the
Options- A. Ectoderm
- B. Endoderm
- C. Mesoderm
- D. All of the above Discuss
- 3. The thyroid hormone that regulates carbohydrate metabolism is
Options- A. Parathyroid
- B. Thyroxin
- C. Parathormone
- D. Estrogen Discuss
- 4. Which of these phosphorylates ADP to make ATP?
Options- A. E
- B. B
- C. C
- D. A Discuss
- 5. Which forms the largest portion of the coxal bone?
Options- A. Ilium
- B. Ischium
- C. Pubis
- D. None of the above Discuss
- 6. What is the heaviest internal organ in the human body?
Options- A. Skin
- B. Lungs
- C. Heart
- D. Liver Discuss
- 7. Which of the following statements about the cytoskeleton is FALSE?
Options- A. The bacterial cytoskeleton is not required for cell division and DNA segregation
- B. The cytoskeleton is made up of two types of protein filament
- C. Protein monomers that are held together with covalent bonds to form cytoskeletal filaments
- D. The cytoskeleton of a cell can change in response to the environment Discuss
- 8. Biological membranes are composed of
Options- A. Phospholipids
- B. Proteins
- C. Carbohydrate groups
- D. All of the above Discuss
- 9. Steroid hormones exert their action by
Options- A. entering the cell and activating mitichondrial DNA
- B. binding cell receptors
- C. activating hypothalmic release of regulating hormones
- D. entering the nucleus of a cell and initiating or altering the expression of a gene Discuss
- 10. In a nucleosome, the DNA is wrapped around
Options- A. ribosomes
- B. thymine dimer
- C. histones
- D. polymerase Discuss
Biology problems
Search Results
Correct Answer: Vitamin C
Explanation:
Fat-soluble vitamins except are the vitamins that are not soluble in water and are only absorbed when taken with higher fat food.
There are 4 types of fat soluble vitamins. They are :
Water soluble vitamins are Vitamin B and Vitamin C.
Correct Answer: All of the above
Explanation:
Gastrulation rearranges the cells of the blastula and ultimately forms the three germ layers of the embryo. The primary layers that will form all of the major body and organ systems of the organism, these germ layers include the ectoderm, mesoderm, and endoderm.
Correct Answer: Thyroxin
Explanation:
Thyroxin or Thyroxine is the thyroid hormone that regulates carbohydrate metabolism in the human body.
Correct Answer: E
Correct Answer: Ilium
Correct Answer: Liver
Correct Answer: Protein monomers that are held together with covalent bonds to form cytoskeletal filaments
Explanation:
Protein monomers that are held together with covalent bonds to form cytoskeletal filaments is the false statement about the cytoskeleton in the given options.
Correct Answer: All of the above
Correct Answer: entering the nucleus of a cell and initiating or altering the expression of a gene
Explanation:
Steroid hormones exert their action by entering the nucleus of a cell and initiating or altering the expression of a gene.
Correct Answer: histones
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