Biology, 22.07.2019 18:30 jessicasbss6145
Identify the structure of the human heart which is a valve between the right atrium and the right ventricle of the heart that directs blood that needs oxygen to the lungs. (check out the hint) a) mitral valve b) aortic valve c) tricuspid valve d) pulmonary valvecorrect answer is c (for the l structure )
Answers: 1
Biology, 22.06.2019 01:20
Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells
Answers: 1
Biology, 22.06.2019 09:00
Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation
Answers: 1
Biology, 22.06.2019 16:30
You will create a molecular clock model for an arthropod gene. follow these guidelines to make your model: . your timeline will span from 90 million years ago to the present. the common ancestor in your model is an arthropod that lived 90 million years ago. the gene that you'll track codes for a protein in the species venom . the dna sequence youll track contains 10 nitrogen bases. you can choose the order of the bases and where the mutations occur. this gene mutates at a rate of approximately 0.76 base pairs every 17.1 million years. to build your model,/ calculate the estimated time period it takes for 1 base pair to mutate. the first time period will only show the common ancestor. at the beginning of the second time period, three lineages will diverge from the common ancestor, each with a different mutation in their gene sequences. the first and third descendant species will survive for the rest of the timeline. the second descendant species was extinct 50 million years ago. calculate how long it will take for one full base pair mutation to occur. explain your reasoning by constructing a mathematical equation
Answers: 2
Biology, 22.06.2019 17:00
Which of the following is one way in which organisms such as clown fish and sea turtles are able to overcome the many dangers that their offspring encounter and ensure that their species population numbers stay relatively steady
Answers: 1
Identify the structure of the human heart which is a valve between the right atrium and the right ve...
Physics, 02.11.2021 23:00
Mathematics, 02.11.2021 23:00
Health, 02.11.2021 23:10
Mathematics, 02.11.2021 23:10
Mathematics, 02.11.2021 23:10
English, 02.11.2021 23:10
Mathematics, 02.11.2021 23:10
History, 02.11.2021 23:10