Biology Flashcards
Learnt awnsers (14 cards)
What is the function of the cell membrane
A. To provide energy for the cell
B. To control the movement of substances in/out of the cell
C. To build proteins
D. Absorb light for photosynthesis
B. To control the movement of substances in and out of the cell
Which three substances are found in plant cells but NOT animal cells A. mitochondria B.chloroplasts C. Permanent sap filled vacuole D. Call wall
B.chloroplasts
C. Permanent sap filled vacuole
D. Cell wall
Name one structure that is found in an animal cell but not in a bacterial cell A. Nucleus B. Cytoplasm C. Cell membrane D. Chloroplasts
A. Nucleus
What is the function of an egg cell A. To kill microbes B.to carry oxygen round the body C.to carry female DNA and feed an embryo D. To transmit impulses around the body
C. To carry female DNA and feed an embryo
What does the term haploid mean
A. Half the number of chromosomes found in a normal body cell
B. The full set of chromosomes found in a body cell
C. Double the normal amount of chromosomes found in a body cell
A. Half the number of chromosomes found in a normal body cell.
What are cellia and what do they do?
A. Talk structures that help sperm swim
B. Hair like structures that move
C. Folds in the cell membrane that help cells absorb substances
B. Hair structures that move substances by beating them along
What do microscopes do
A. Allow us to view distant regions of our universe
B. Magnify objects to make them look bigger
C. Shrink objects to make them look smaller
B.Magnify objects to make them look bigger
Give an advantage of an electron microscope over a light microscope
A. Cheeper to build and use
B. More compact and simple to repair
C. Larger magnification and better resolution
C. Larger magnification and better resolution
How do you calculate the magnification of an object A. Image size÷actual size B.actual size ÷ image size C. Image size × actual size D. Actual size × image size
A. Image size ÷ actual size
How would you convert a meansurement form mm to um? A. Multiply by 10 B. Divide by 10 C. Multiply by 1000 D. Divide by 1000
C.Multiply by 1000
What part of an enzyme makes it specific to a particular substance A. Enzyme-substance complex B. Optimum C. Denstured D. Active site
D. Active site
Which two molecules are produced when lipids are broken down?
A. Clycerol+fatty acids
B. Clycerol + aminol acids
A. Glycerol + fatty acids
What do extremely high temperatures tend to do to enzymes in our body?
A.make them work faster
B. Kill them
C. Denture them
C. Denture them
A pupil is investigating how PH affects amylase activity. What type id solution could she use to change the PH of the reaction mixture A. A buffer solution B. An alkali solution C an acidic solution D.water
A. A buffer solution
