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Crazy boy [7]
3 years ago
12

Can you identify the steps in the scientific method that correspond to hunt's experiments?

Biology
1 answer:
Sphinxa [80]3 years ago
6 0

The team of Hunt had designed an experiment to test the hypothesis of the effect of BPA on mice. The daily doses of BPA was administered into the female groups of mice for 3, 5 and 7 days and then the genetic abnormalities which occured during meiosis, chromosome division or egg formation were studied.

The steps followed in this experiment in order are as follows:

  • Observation- The mice eggs in plastic cages when washed using harsh soap showed problems during the cell division stage which caused genetic abnormalities.
  • Question- If the bisphenol A from the plastic affected mice in the damaged cages.
  • Hypothesis- If the frequency of the genetic abnormality was affected by the exposure to bisphenol A.
  • Prediction- The level of exposure of mice to bisphenol A was proportional to the increase in genetic abnormalities.
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A red rose bush cross pollinates a white rose bush. The offspring have white flowers with red
Nadusha1986 [10]

Answer: 50%

Explanation: In certain rose plants, white roses and red roses are incompletely dominant to one another. When a red rose is crossed with a white rose, a pink rose will result. What is the probability of producing more pink roses from two pink parents?

8 0
3 years ago
A dead or weakened pathogen used to establish immunity would most likely be found in
blagie [28]
Vaccines are made up of dead or weakened pathogens that are stripped of their ability ..

so answer is in a vaccine
4 0
3 years ago
The axial skeleton provides an extensive surface area for the attachment of muscles that __________.
garik1379 [7]

The question is incomplete as it does not have the options which are:

  • Adjusts the positions of the head, the neck, and the trunk
  • Perform respiratory movements
  • Stabilize or position parts of the appendicular skeleton
  • All of the above

Answer:

All of the above

Explanation:

The axial skeleton is the group of bones which forms the centre of the skeletal system. The central portion of the skeletal system includes bones of the skull, bones associated with the skull, the thorax, and the vertebral column (spinal cord).

There are 80 axial skeletal bones out of which 22 bones are present in the skull, 7 attached to the skull, 25 in a thoracic cage and 26 in the vertebral column.

The axial skeleton help maintains the position of the appendicular skeleton, maintain the posture of the body by maintaining the posture of the neck, head and trunk and also help in the respiratory movements.

Thus, all of the above is correct.

5 0
3 years ago
"Generally describe the series of events via which pyruvate is further processed after glycolysis (assume that this is in the pr
kobusy [5.1K]

Answer:

The product of glycolysis is two molecules of pyruvate. It is a three-carbon compound. This pyruvate again undergoes oxidation in the cytoplasm. This process is called pyruvate oxidation which produces Acetyl CoA. The Acetyl CoA is a two-carbon molecule.

Acetyl CoA again used for the citric acid cycle. This is also called as Kreb's cycle / TCA cycle. Because citric acid has 3 carboxylic groups. The acetyl coenzyme produces NADH, FADH2, ATP. The citric acid cycle occurs in the mitochondrial membrane. This is an 8 step process. The first product is citric acid. The other products of each step are isocitrate, alpha-ketoglutarate, succinyl CoA, succinate, Fumarate, L - malate, and Oxaloacetate (OAA).

Another process of aerobic respiration is the electron transport chain ( ETS). Here the energy stored in NADH, FADH2 in the citric acid cycle are utilized. It is a chain of electron carriers. ETS occurs in the inner membrane of mitochondria.  

In short, the glucose splits by glycolysis and produces ATP, NADPH, and final product pyruvate. The pyruvate is oxidized and forms acetyle coenzyme. This is used in the TCA / citric acid cycle. In this process also NADH, FADH2 which forms electrons are produced. Theses electrons are carried by different electron carriers and accepted by oxygen.

In the process of pyruvate oxidation 6 ATP, and in Kreb's cycle 18 ATPs, in ETS, 4 ATPs are produced. In addition to this in glycolysis produces 4 ATPs. The total number of ATP in aerobic respiration is 32 ATP.  

8 0
3 years ago
In the developing fetus, the umbilical __________ carries blood rich in nutrients and oxygen to the fetus.
vesna_86 [32]
Cord? Or maybe vein. But I strongly believe it’s cord
6 0
4 years ago
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