Biology

Archaebacteria and eubacteria are classified into different kingdoms, but at one time they were both classified in the Kingdom Monera. Which statement best describes why the classification of these organisms was changed? A. The kingdom became too large and had to be made into two smaller kingdoms.B. New biochemical data showed different evolutionary relationships within the kingdomC. The archeabacteria and eubacteria habitats were too different to be classified in the same kingdom.D. Chromosomal analyses indicated a new genetic combination had arisen within a certain organisms in the kingdom.
2 Answers
In a eukaryotic cell, which of the following processes directly involves DNA?
1 Answer
7. If you were unsuccessful in locating the epicenter, describe how you could modifyseismograph resources to find the epicenter successfully.
1 Answer
All forms of life work and must take in food to create_______?
2 Answers
Two hawk species are present in the same ecosystem. Hawk A feeds on mice and squirrels, both of which feed on seeds and nuts. The small population of Hawk species B eats snakes that feed on mice and squirrels. Which describes why Hawk B is the keystone species in this scenario?
1 Answer
What controls cell differentiation withinorganisms?
1 Answer
Which factor is different between the tundra biome and a tundra ecosystem?A. Soil moistureB. ClimateC. SizeD. Type of plants
2 Answers
Complete the table below showing the sequences of DNA, mRNA codons, tRNA anticodons and the amino acids. Remember the genetic code is based on mRNA codons. (il give you brain list if you answer all)
2 Answers
As sound waves travel through air, they cause air molecules to do what?
1 Answer
"Is it the year 2017?" might be an example of which concept? a) Pneumograph b) Detection cuec) Control questiond) Pre-test
1 Answer
Which statement best explains how respiration and photosynthesis are related to one another? A Respiration requires water that is given off during photosynthesis. B. Photosynthesis requires oxygen that is given off during respiration. C. Photosynthesis gives off carbon dioxide that is required for respiration D. Respiration gives off carbon dioxide that is required for photosynthesis
1 Answer
Which of the following is an example of microevolution?A. The formation of four new species of fish in a lake over thousands of years B. A mass extinction that occurs because of major environmental changes in a habitatC. A change in the frequency of body color in species of beetle over time D. The formation of two new species of rodent that have been isolated by a mountain range
1 Answer
121 pointWhich type of cell must contain a mutation in order for the mutation to be passed on to offspring (select 2)?sperm cellegg cellskin cellnerve cellbrain cellblood cell
1 Answer
can the behavior of a material or substance be considered a physical property? Explain why or why not.
1 Answer
What is the primary cause of groundwater shortage?A)pollutionB)use exceeding the rate of replenishmentC)lack of precipitationD)flooding
2 Answers
where can you get information about endangered species?
1 Answer
Which of the following describes the function of genomics and marker-assisted selection?A. help determine the heritability of a trait and eliminate undesirable traitsB. introduce probiotics and the transfer of microorganisms from other speciesC. eliminate undesirable traits and improve desirable traitsD. improve desirable traits and help determine the heritability of a trait
1 Answer
state two functions of bile juice in digestion of food
1 Answer
What is included in Earths hydrosphere?
2 Answers
I REALLY NEED HELP ASAP!!!!!!! *I attached a picture but heres the question just in case!""The diagram below shows the structures of an animal cell. What is structure 3, and how does it help sustain life?"
2 Answers
HELP! This is a fill in the blank I need a quick answer to. Cells can make new cells. One cell can (a) ____________ into two new cells. This is called (b)__________________. The process of cell division goes through various states. First, the cell nucleus (c)________________ into two. A new cell surface membrane then (d)____________ the cell divides. The two new cells are called (e)_______________ and they are small. They will grow and become larger. They grow by getting (f)______________ from the food that is eaten. Once they grow to full size they can also (g)_____________. If cells divide more quickly than they should, or divide in the wrong way, (h)_____________ can develop.
1 Answer
How does genetic variability allow these lizard populations to survive ?
1 Answer
PLEASE HELP !!Ill GIVE BRAINLIEST!!NO LINKS OR FILES.
2 Answers
Provide an example of how your body could maintain homeostasis in response to detecting that the body temperature was falling below 98.5 degrees.
1 Answer