Quiz
Chapter 1-3 Quiz
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Perguntas do quiz (11)
1Membrane phospholipids
- Ahave hydrophobic heads that face the centre of the membrane and are shielded from water.
- Bhave hydrophilic tails that face outward and are exposed to water.
- Care able to drift about in the plasma membrane
- Dremain fluid because they are tightly packed against one another.
2A hypothesis is
- Athe same as a theory
- Ba proposed explanation for a set of observations
- Can explanatory idea that is broad in scope and supported by a large body of evidence
- Da widely accepted idea about a phenomenon
3Which level in the hierarchy shown is a community?

- Aall environments on earth supporting life
- Bsavannah
- Call organisms in the savannah
- Dgroup of cheetahs
4Which of the following organisms belongs to the group represented in Box 1?

- Agiraffe
- Btree
- Cdecomposing bacteria
- Dleopard
5Which of the following statements regarding a common cellular activity is false?
- Acells respond to the environment
- Bcells develop and maintain complex organization
- Ccells regulate their internal environment
- Dnew cells are derived from cellular components like organelles
6You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt style. This prediction is an example of
- Aan experimental question.
- Ba type of observation.
- Ca hypothesis.
- Dan experiment.
7Which of the following is a trace element in the human body?
- Anitrogen
- Bzinc
- Coxygen
- Dhydrogen
8What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?
- A6
- B8
- C12
- D18
9A hydrogen atom has one electron. How many covalent bonds can hydrogen form?
- Aone covalent bond
- Btwo covalent bonds
- Cfour covalent bonds
- Dno covalent bonds
10Household ammonia has a pH of 12; household bleach has a pH of 13. Which of the following statements about them is true?
- ABoth of these substances are strong acids.
- BThe ammonia has 10 times as many OH- ions as the bleach.
- CThe ammonia has 10 times as many H+ ions as the bleach.
- DA solution that could buffer the bleach and ammonia would remove excess OH- ions.
11________ are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.
- Aionic
- Bcovalent
- Cpolar covalent
- Dhydrogen bonds
Informações
- Descrição
- Quiz sobre Chapter 1-3 Quiz, criado por Karen Deseo em 12-04-2018.
- Autor
- Karen Deseo
- Idioma
- English
- Visualizações
- 63
- Etiquetas
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