Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Which molecules, made by immune cells, bind to specific antigens?

1. AEnzymes
2. BPhospholipids
3. CHormones
4. DAntibodies

Kas eksperimente yra nepriklausomasis kintamasis?

1. AGrupė, kuri negauna jokio poveikio
2. BVeiksnys, kuris matuojamas kaip rezultatas
3. CVeiksnys, kurį tyrėjas sąmoningai keičia
4. DVeiksnys, išlaikomas toks pat visose grupėse

What is the job of the capsule found around some bacteria?

1. AIt is used to swim through liquids
2. BIt holds the bacterium's main chromosome
3. CIt protects the cell, for example from white blood cells
4. DIt helps the bacterium make energy by photosynthesis

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt makes them stick to vessel walls
2. BIt helps them divide faster
3. CIt gives a large surface area for gas exchange
4. DIt lets them hold a larger nucleus and more DNA

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

1. AIt makes DNA from the virus's RNA
2. BIt makes RNA from the host's DNA
3. CIt breaks down the host's ribosomes
4. DIt makes proteins from the virus's DNA

Which list puts these human energy sources in order from fastest to use to longest-lasting store?

1. AATP, then glycogen, then fat
2. BFat, then glycogen, then ATP
3. CGlycogen, then ATP, then fat
4. DATP, then fat, then glycogen

A dihybrid cross gives offspring in a ratio of about 9 : 3 : 3 : 1. What does this suggest?

1. ABoth parents are heterozygous for two genes that assort independently
2. BOne parent is AaBb and the other is homozygous aabb
3. CBoth parents are homozygous dominant for both genes
4. DThe two genes are tightly linked on the same chromosome

DNR mėginyje yra 30% adenino. Kiek procentų jo bazių sudaro guaninas?

1. A70%
2. B30%
3. C40%
4. D20%