Posted: April 27th, 2017
Two atoms with the same atomic number, but different mass numbers are called_________.
Question
- Which of the following is not a function of mitosis in humans?
- Growth
- Repair of wounds
- Production of gametes from diploid cells
- Replacement of lost or damaged cells
- A gamete (cell) carries only one allele for each inherited character because the two alleles separate from each other during gamete production (meiosis). This statement defines
- A) Monohybrid cross
- B) Law of segregation
- C) Genotype
- D) Homologous chromosomes
- E) All of the above
- What is the correct sequence of steps in the scientific method?
- Observe a phenomenon
- Analyze and interpret data
III. Develop a hypothesis
- Share the results with other scientists
- Design and perform experiment to test the hypothesis
- A) I – II -III -IV – V
- B) III – I -V– II –IV
- C) V – IV –III – II – I
- D) I – III – V– II – IV
- E) V – II –I – III -IV
- To test a hypothesis about a given variable, experimental and control groups are tested in parallel. Which of the following best explains the dual experiments?
- A) In the experimental group, a chosen variable is altered in a known way. In the control group, that chosen variable is not altered so a comparison can be made.
- B) In the control group, a chosen variable is altered in a known way. In the experimental group, that chosen variable is not altered so a comparison can be made.
- C) In the experimental group, a chosen variable plus all other variables are altered. In the control group, the chosen variable is altered; however, all other variables are held constant.
- D) In the experimental and control groups, two different variables are altered.
- E) Experimental and control groups experiments are identical and run in parallel to get repeatable results.
- The smallest unit of life is the
- A) cell
- B) organelle
- C) macromolecule
- D) atom
- You examine a cell under a microscope and you do not see a well defined nucleus. You conclude the cell must a _____________________ cell.
- A) prokaryotic
- B) eukaryotic
- C) plant
- D) animal
- All of the following are examples of elements except?
- A) oxygen
- B) water
- C) hydrogen
- D) carbon
- Two atoms with the same atomic number, but different mass numbers are called_________.
- A) radioactive
- B) isotopes
- C) proteins
- D) electrons
- E) nuclei
- Select the element that is not one of the four most common elements in living matter.
- A) carbon
- B) hydrogen
- C) nitrogen
- D) oxygen
- E) phosphorous
- Edward was found to heterozygous (Ss) for the sickle-cell trait. The alleles represented by the letters S and s are
- A) on the X and Y chromosomes
- B) linked
- C) on homologous chromosomes
- D) both are present in each of Edward’s sperm cells
- E) none of the above