Biology questions and answers in October 2021

(3 pts) Describe whether selection is acting on body size in this case (see figure; linear P=0.89 10 regression line depicted), and briefly explain how you determined this. B 6 Number of Surviving Off...
(3 pts) Describe whether selection is acting on body size in this case (see figure; linear P=0.89 10 regression line depicted), and briefly explain how you determined this. B 6 Number of Surviving Off...
Make up an organism and briefly describe a situation of adaptive phenotypic plasticity, including at least 1 trait, 2 environments, how selection acts on the trait in the different environments, and w...
A researcher has been conducting a long-term project studying a population of Mimulus  monkey flowers. A very large proportion of the population is measured every year for floral traits. Coincident w...
For evolution to occur, both physical diversity (including adaptive traits) and genetic diversity are necessary. As changes occur in the environment, some individuals will have a selective advantage w...
  Question 6  (2 points)   Which statement about vaccines is TRUE? Question 6 options:   Vaccines can only be used to prevent viral diseases.   Vaccines stimulate production of memory T and B cel...
Part A If sexual reproduction in humans occurs correctly, the gametes formed by meiosis are & the zygotes formed by fertilization are O recessive; dominant O homozygous; heterozygous O haploid; di...
Part A The ABO blood type gene is an autosomal gene on chromosome #9 with three common alleles: A, B, & O. If you have blood type AB, & you mate with someone with the same blood type & hav...
The ability to breakdown and excrete excess cholesterol from your body has a genetic basis. Our human genome contains a gene that codes for protein receptors on the surfaces of our liver cells that bi...
Item 9 < 9 of 20 Mail Blackbo Part A Describing a person as having cystic fibrosis is to indicate his or her: O genotype O phenotype O number of chromosomes environment O genetic code Submit Reques...
Item 13 < 13 of 20 Mail Blackboar Part A A geneticist is comparing the expression of a particular trait between men and women. The geneticist finds that the trait is expressed differently between t...
Item 10 < 10 of 20 Mail Part A A "carrier" for a recessive genetic disorder does not suffer from any illness, but they may pass the disorder to their children because carriers are: O homo...
Dr. Wheeler is investigating the relationship between asthma and air quality. He collects data on children age 3-8, none of whom have asthma at the beginning of the study. After five years, in a sampl...
Item 7 < 7 of 20 Mail Blackboa Part A Alleles can be defined as different copies of the same gene. But, what exactly is different about them? the locus of each gene copy O the DNA sequence of each ...
< 5 of 20 Mail Blackboard Part A Which of the following is a fixed trait in humans that is determined entirely by your genes and is NOT influenced in any way by the environment? O Cancer O ABO bloo...
Item 20 < 20 of 20 Mail Part A If flower color in a particular species of plant is a monogenic trait, and a genetic cross between a plant that is true-breeding for red flowers and one that is true-...
We are testing whether high rates of air pollution cause childhood asthma. We have selected 300 children with asthma and 500 children without asthma. We then determine which of those children live in ...
Please answer the question and explain why other answers are wrong.  . A 7-year-old boy is brought to the physician by his parents because of recurrent epistaxis for the past 2 days. He recently reco...
The pathogen is ( directly or indirectly ) transmitted, and replicates (by using or without using ) the replication machinery of the host cells. . (15.1. A new disease has recently been discovered in...
Please answer and explain why other choices are wrong.. A 14-year-old girl is brought to the physician because she has been having menses that last 10-12 days for the past 6 months. She is concerned b...
Please answer and explain why other choices are wrong.. A previously healthy 40-year-old woman is brought to the emergency department by her husband because of a 2-day history of fever, lethargy, and ...
Please answer and explain why other choices are wrong.  . A 15-year-old boy is brought to the emergency department because of a nosebleed that has lasted for the past hour without nasal trauma. He ha...
You are interested in finding out in which cellular compartment the protein called DsaT is found in a cancer cell line you have growing in the lab. You are NOT able to create a fusion protein of DsaT ...
In guinea pigs, black fur color (B) is dominant to white (b).  A white male guinea pig, whose parents were both black was bred with a female with black fur whose father had black fur and mother has w...
Biogeochemical cycles exemplify how all matter on Earth is cycled. Matter can be broken down and put together in different ways but not removed from Earth. Energy is not cycled. It can be passed from ...
Why are decomposers, like the mushroom, classified as heterotrophs, not as autotrophs? a) Mushrooms make organic compounds from inorganic molecules. Mushrooms use organic material from live producer...
Which of the following could potentially change the rate of an enzyme catalyzed reaction? Select all that apply. Marks removed for incorrect selection(s). Select one or more: a.Concentration of availa...