Which one of the following is the correct description of a certain part of a normal human skeleton?
Parietal bone and the temporal bone of the skull are joined by fibrous joint
First, vertebra is axis, which articulates with the occipital condyles
The 9th and 10th pairs of ribs are called the floating ribs
The 9th and 10th pairs of ribs are called the floating ribs
A.
Parietal bone and the temporal bone of the skull are joined by fibrous joint
Immovable or fixed or fibrous joints are found between the skull bones. No movement occurs at these joints. So, parietal bone and the temporal bone of the skull are joined by fibrous joint. Invertebrates, the first vertebra is called petals, while the second vertebra is the axis. In humans first pairs of ribs are called true ribs; 8th and 9th and 10th pairs of ribs are false ribs while 11th and 12th pairs of ribs are called floating ribs.
Glenoid cavity is a socket shaped cavity in the scapula (shoulder bone) that holds the head of the humerus in a ball and socket joint.
Select the correct combination of the statement (A-D) regarding the characteristics of certain organisms.
A. Methanogens are Archaebacteria, which produce methane in marshy areas.
B. Nostoc is a filamentous blue-green algae, which fixes atmospheric nitrogen.
C. Chemosynthetic autotrophic bacteria synthesise cellulose from glucose.
D. Mycoplasma lacks a cell wall and can survive without oxygen.
B, C
A, B,C
B, C, D
B, C, D
Select the answer with the correct matching of the structure, its location and function.
Structure |
Location |
Function |
Eustachian |
Anterior part of internal ear |
Equalizes air pressure on either sides of tympanic membrane |
Structure |
Location |
Function |
Cerebellum |
Mid -brain | Controls respiration and gastric secretions |
Structure |
Location |
Function |
Hypothalamus |
Forebrain | Control body temperature, urge for eating and drinking |
Structure |
Location |
Function |
Hypothalamus |
Forebrain | Control body temperature, urge for eating and drinking |
The 3' 5' phosphodiester linkages inside a polynucleotide chain serve to join
one DNA strand with the other DNA strand
one nucleoside with another nucleoside
one nucleotide with another nucleotide
one nucleotide with another nucleotide
The figure given below shows the conversion of a substrate to product by an enzyme. In which one of the four option (a-d), the components of reaction labelled as A, B, C and D are identified correctly?
A |
B |
C |
D |
Potential energy |
Transition state |
Activation energy with enzyme |
Activation energy without enzyme |
A |
B |
C |
D |
Transition energy |
Potential energy |
Activation energy with enzyme |
Activation energy with out enzyme |
A |
B |
C |
D |
Potential energy |
Transition energy |
Activation energy with out enzyme |
Activation energy with enzyme |
A |
B |
C |
D |
Potential energy |
Transition energy |
Activation energy with out enzyme |
Activation energy with enzyme |
Identify the components labelled A, B, C and D in the diagram below from the list 1 to 8 given along with
1) Cristae of mitochondria
2) Inner membrane of mitochondria
3) Cytoplasm
4) Smooth endoplasmic reticulum
5) Rough endoplasmic reticulum
6) Mitochondrial matrix
7) cell vacuole
8) Nucleus
A |
B |
C |
D |
5 |
4 |
8 |
3 |
A |
B |
C |
D |
1 |
4 |
8 |
6 |
A |
B |
C |
D |
6 |
5 |
4 |
7 |
A |
B |
C |
D |
6 |
5 |
4 |
7 |
Examine the figure A, B, C, and D. In which one of the four options, all the items A, B, C and D are correct.
A |
B |
C |
D |
Chara |
Marchantia |
Fucus |
Pinus |
A |
B |
C |
D |
Equisetum |
Ginkgo |
Selaginella |
Lycopodium |
A |
B |
C |
D |
Selaginella |
Equisetum |
Salvinia |
Ginkgo |
A |
B |
C |
D |
Selaginella |
Equisetum |
Salvinia |
Ginkgo |