Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What is homeostasis?

1. ABreaking down food for energy
2. BKeeping a stable internal environment
3. CMaking identical copies of a cell
4. DChanging a species over many generations

Which pigment absorbs light energy for photosynthesis?

1. AMelanin
2. BChlorophyll
3. CKeratin
4. DHaemoglobin

What is an organism's genome?

1. AThe proteins made by one cell
2. BThe traits that can be seen
3. CAll of its genetic material
4. DA single gene on one chromosome

Why do chromosomes condense into short, thick shapes before mitosis?

1. ASo that they can be copied more quickly
2. BSo they can be moved apart without tangling or breaking
3. CSo that they can leave through the nuclear pores
4. DSo that genes can be transcribed more easily

Why must human gametes be haploid?

1. ASo that the gametes can divide quickly by mitosis
2. BSo that the gametes can make more proteins
3. CSo that the zygote has twice the normal number of chromosomes
4. DSo that the zygote has the normal number of 46 chromosomes

A patient's blood type is B positive. What does this mean?

1. ATheir red cells carry the B antigen and the RhD antigen
2. BTheir plasma contains anti-B antibodies
3. CTheir red cells carry no antigens at all
4. DTheir red cells carry the A antigen and no RhD antigen

A leaf with green and white areas is kept in light and then tested with iodine. Only the green areas turn blue-black. What does this show?

1. AWhite areas store more starch than green areas
2. BLight is not needed for photosynthesis
3. CChlorophyll is needed for photosynthesis
4. DIodine destroys chlorophyll in the leaf

At 100× total magnification, the field of view of a microscope is 2 mm wide. What is its width at 400×?

1. A2 mm
2. B0,2 mm
3. C8 mm
4. D0,5 mm