Biology Questions

A A lethal allele which can be dominant or recessive is often fatal when the offspring receives copy more than one B a single C the tainted

A Gregor Mendel choice of garden pea plants to study worked out well as they only have easy to identify expressed traits 23 B 2 C 7

The outermost surface of the hair is called the matrix cortex cuticle Omedulla Copyright by SOMSO 2010 www somso com Pearson

If the P1 is AABb x aaBb what is the probability of having an offspring that is aaBb A 1 4 B 0 C 1 16 D 1 2

Which structure is highlighted hair bulb hair root hair follicle hair shaft Copyright by SOMSO 2010 www somso com Pearso

What class of receptor is the highlighted structure exteroreceptors Ochemoreceptors Oproprioceptors mas interoreceptors Copyright by SOMSO 2010 www somso com

A AaBbcc x AabbCc Considering the P1 above what are the chances that any of the offspring will show at least two recessive traits 3 16 B 318 C 9 16

What would result from a yellow round pea RRYY crossed with a green wrinkly pea rryy A Only 1 green wrinkly pea B Only 1 yellow wrinkly pea C Only 1 yellow round pea D Only 1 green round pea

A 1 2 1 Tt Tt tt What phenotypic ratio is shown above B tt 1 0 0 C 1 1

A very specific type of genetic cross called across uses a known genotype to cross with an unknown genotype A back B hybrid C test D dominant

In the demo the penny represents a recessive trait and the quarter a dominant trait An organism with one of each is A incompletely dominant B heterozygous C sterile D homozygous

3 30 Heterosporous Seed producting Homosporous Flower producing Onon vascular

Which of the following are NOT characteristics of the pea plant that make it an ideal subject for experimentation A short germination time B easy to manually pollinate C rare and exotic traits D easy to grow

In Mendel s pea plants the F1 generation was crossed to form an F2 generation with purple and white flowers in a A 1 1 ratio B 3 1 ratio C 1 0 ratio D 1 2 1 ratio

A Gamete formation in males ends in a n split of viable cells even B uneven C 50 50 split

A The array of structures shown to the right are called diploid cells B asci C map units

5 1 point ach of the following is NOT one of the differences betwe presence of guard cells location of stomata Opattern of leaf venation presence of bundle sheath cells around vascular bundles

One method of gaining diversity during meiosis is in which portions of sister chromatids exchange portions of their genes A independent assortment B independent segregation C crossing over

A Even with the mechanisms of variation preceding which unites the gametes and produces the zygote there are still 64 trillion possible combinations random fertilization B crossing over C indepen dent assort ment

A forms during meosis in which there are four chromatids of each chromosome A tetrad B quatrad C haploid state D diploid state

Meiosis essentially goes through twice to reach the haploid number A binary fission B meiosis C parthenogenesis D mitosis

A is the raw material for natural selection therefore without nothing would evolve variation B weak individuals C clones

Figure 2 to the right contains benign tumors as you can see tissue starting to A overlap B Fig 1 Fig 3 separate into many tumors C Fig 2 stratify

Figure 2 to the right contains Fig 1 as you can see Fig 3 tissue starting to A malignant tumors B benign tumors C Fig 2 normal tissue

A One of the only options to treat a cancer that has metastasized is which attacks rapidly dividing cells chemo thorony B radiation C anti biotics

If we have a red light at the M checkpoint then there is a unique cell that has two of everything called a A twin B dikaryon C diploid cell

A If we have a red light at the then there is a unique cell that has two of everything called a G checkpoint B G checkpoint C M checkpoint

How would you describe the frequency of the cell reproduction cycle of liver cells A Every 5 days B Every 120 days C Never D Only when threatened

Once the chromosomes are pulled apart and the membrane is starting to pinch in the middle the cell is in A anaphase B G1 C telophase D prophase

During which phase of mitosis do the chromosomes line up single file at the equator of the cell A prophase B anaphase C telophase D metaphase

A Structure 2 or structure 1 waistline of the chromosome structure 2 is called the centriole B centromere C chromatid

Which of the following is NOT part of the mitotic spindle A microtubules B asters C pores D centrosomes

of A very rare form reproduction can be characterized by A haploid gametes joining to form diploid zygotes B an alternation of generations C part of an organism pinching off and becoming its own organism D a daughter cell pinching off and becoming its own mother cell

A Examples of local direct signaling in plant cells occurs through and in animal cells are involved channel proteins B gap junctions C plasmo desmata

If your blood sugar drops and your liver releases glucose to raise blood sugar this is feedback A negative B positive C anabolic D inhibitory

Organisms that photosynthesize perform cellular respiration A still need to B do not need to C are unable to D still use chloroplasts to

Which of these is NOT a name for the final stage of photosynthesis A The Calvin Cycle B The light independent reaction C The carbon fixation cycle D Substrate level phosphorylation

The type of photophosphorylation that offers the biggest energy pay off is non cyclic photo phosphory lation B cyclic photo phosphory lation substrate level photo phosphory lation

The first photosystem in the thyalkoid membrane is called A photosystem II C p700 B photosystem I D numero uno

Discrete units of electromagnetic radiation are known as atoms educers B light D photons

A Most of the cholorplasts are on the underside of the leaf otherwise and other environmental factors could affect them light pollution B wind H O

A plant is green because it green light A refracts C absorbs B reflects D transforms

Which of the following is NOT a part of photosynthesis A Photolyses C Oxidative phosphorylation B Carbon fixation D Light reactions

The greater color change in the bromothymol blue experiment when running showed an increased rate of production A glucose C oxygen B carbon dioxide D water

A The electron transport chain is a series of diffusion facilitating membrane proteins found in the membrane of the mitochondria outer surface of the finer

A The key result of the Citric Acid Cycle is load the shuttle buses NADH and FADH to carry to final stage of cellular respiration neutrons B electrons C protons

The key result of the Citric Acid Cycle is to load the shuttle buses NADH and to carry to final stage of cellular respiration B C

Glycolysis involves two phases investment and energy energy B first C

A Step 1 Step 2 C C C C C C After step 2 the next aerobic step is the citric acid cycle which will lead to the release of as waste C C C C C C 0 B H O C CO

A C C C C C C Step 2 C C C C C C After step 2 the next aerobic step is which will lead to the release of as waste Glycolysis B Alcoholic fermentation The Citric Acid Cycle