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Created by Master Student

Biology Practice Test #8

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A somatic cell of the common octopus (Octopus vulgaris) has 56 chromosomes. What number of chromosomes will an octopus gamete contain?

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Which of these is the MOST LIKELY result of blood calcium levels falling too low?

3 / 40

Which of the following plays an important role in the human immune system

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An original cell replicates its DNA. The cell undergoes mitosis and cell division, and one of the daughter cells replicates its DNA. Which of these BEST describes the DNA of the second-generation daughter cells?

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As a reaction proceeds, reactants form a transition state, which then forms the products. An enzyme affects the energy of the

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An organism produces many offspring each reproductive season, only a few of which survive. The survivorship curve for this organism can BEST be described as

7 / 40

Which of these plant forms are diploid? I. Spore II. Sporophyte III. Gametophyte

8 / 40

A human hereditary disorder that is present only in males is most likely

9 / 40

Which of the following individuals is the LEAST fit in evolutionary terms?

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Question below refers to the phylogenetic tree of fly families shown. According to the phylogenetic tree, which speciation event occurred EARLIEST?

11 / 40

A lake filled with algae that are choking out aquatic plants and fish is likely experiencing which process?

12 / 40

How does the ATP synthase enzyme function in the cell?

13 / 40

A solute cannot move into a cell by crossing the phospholipid bilayer of the membrane. It can, however, enter through a membrane protein. The fact that solute molecules are entering the cell MOST LIKELY indicates that

14 / 40

All of the following are true about the endocrine system EXCEPT

15 / 40

A unicellular prokaryote belongs to which kingdom?

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Homologous structures, which have similar underlying structures but may have different functions, are formed by

17 / 40

Which of these is an example of polygenic inheritance?

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All of the following take place in the thylakoid of the chloroplast EXCEPT

19 / 40

Which pair of organisms is likely to engage in interspecific resource competition?

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A genetic mutation that adds a nucleotide to a protein-coding sequence of DNA creates an early stop codon. How will this influence the resulting protein?

21 / 40

This nucleic acid is associated with histone proteins.

22 / 40

Which of the following plays an important role in the human immune system

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Which of these mutations in a gene will MOST LIKELY result in a shortened protein with a long sequence of substituted amino acids?

24 / 40

Human ABO blood typing is determined by the proteins present on red blood cells. The gene that codes for these proteins has three alleles: IA, IB, and i. IA codes for protein type A, IB codes for protein type B, and i codes for the absence of protein. IA and IB are codominant and i is recessive to both IA and IB. A woman with blood type A and a man with blood type AB marry and produce children. Which of the following blood types is NOT possible in their children?

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Which of these describes a characteristic of the induced-fit model but not the lock-and-key model?

26 / 40

Permits gas exchange and transpiration in leaves

27 / 40

Which type of biome is found at the lowest latitudes?

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Which of these carries deoxygenated blood? I. Pulmonary veins II. Anterior vena cava III. Pulmonary arteries

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At which stage of meiosis do cells from a sperm cell precursor contain a haploid set of chromosomes, each consisting of two sister chromatids?

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The steps of protein synthesis and modification take place in several different locations throughout the cell. What is the proper order of these locations, from start to finish? I. Ribosome II. Nucleus III. Golgi apparatus IV. Endoplasmic reticulum

31 / 40

In fruit flies, brick-red eye color is dominant to a bright orange color called cinnabar. A fruit fly with heterozygous eye color geno-type is crossed with homozygous recessive fruit fly. What is the probability of inheritance for the cinnabar phenotype and the heterozygous genotype?

32 / 40

What fragments would be produced if the following plasmid were to be digested with EcoRI and HindIII to completion?

33 / 40

Homologous chromosomes separate in this phase.

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Which of the following substances are produced by the light reactions of photosynthesis?

35 / 40

This organ secretes growth hormone (GH).

36 / 40

Some rocks feature red bands or streaks made up of iron oxides, formed when iron reacts with oxygen. These originated from dissolved iron in the oceans, which formed oxides and settled to the ocean bottom. What allowed this chemical and physical process to occur?

37 / 40

Ground tissue with no specialized function

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In what order did the following types of organisms appear in the history of life on Earth? I. Eukaryotes II. Heterotrophic organisms III. Metazoa IV. Photosynthetic organisms

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During which phase of mitosis do the centromeres split?

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This organ secretes the hormone responsible for the flight-or-flight response.

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