BIOLOGY HIGH SCHOOL

The avoidance of personal prejudice or bias is an important trait of a scientist. a. True
b. False

Answers

Answer 1
Answer: true- it's not good if the scientist changes the outcome and reads data with a bias because then it's not 100% honest. 

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Discuss assessments of the cardiovascular and respiratory systems and identify diagnostic tools to measure the effectiveness of the systems

Answers

There are many type of diagnostic assessments used by health professionals to check the cardiovascular and respiratory body systems today. These devices tend to be focused on identifying any unusual or atypical occurrences inside these body systems. 
1. Blood pressure checker

What has a greater impact on humans earth's ocean of earth's freshwater

Answers

Answer: earths ocean has more impact.

explanation:

the ocean provides a larger amount of oxygen than all the plants on earth including the amazon rainforest. freshwater isn’t as important because it doesn’t produce that much oxygen and the ocean provides more minerals and food.

6. The _______ is the temperature to which air must be cooled at constant pressure to reach saturation. A. latent heat
B. dew point
C. saturation heat
D. adiabatic lapse

Answers

Dew point is the temperature to which air must be cooled be cooled at constant pressure to reach saturation.

The _______ is the temperature to which air must be cooled at constant pressure to reach saturation. The answer is, B. Dew point.

Which best describes a compound such as magnesium oxide?

Answers

Magnesium oxide is a pure substance composed of two different atoms (magnesium atoms and oxygen atoms) chemically bonded to one another. 

Answer:

a pure substance that is made up of different elements

Explanation:

A student is studying mitosis, in which a cell divides to form two cells. Which of these shows the CORRECT mathematical model for the process if Nold shows the number of chromosomes in the parent cell and Nnew shows the number of chromosomes the individual daughter cells?

Answers

The correct answer for the question that is being presented above is this one: "A) Nnew = Nold." The CORRECT mathematical model for the process if Nold shows the number of chromosomes in the parent cell and Nnew shows the number of chromosomes the individual daughter cells is that A) Nnew = Nold 

Here are the following choices:
A) Nnew = Nold 

B) Nnew = Nold/2 

C) Nnew = 2 × Nold 

D) Nnew = 4 × Nold

Answer:A

Explanation:just took the test

At a basic level mitosis and meiosis are similar processes. However, they have very different outcomes. Which of the following statements describes an important outcome difference?A. Sister chromatids are separated in meiosis but not in mitosis.B. Sister chromatids are separated in mitosis but not in meiosis.C. Homologous chromosomes are separated in meiosis but not in mitosis.D. Homologous chromosomes are separated in mitosis but not in meiosis.E. None of the above describes a difference between mitosis and meiosis.

Answers

Answer: C. Homologous chromosomes are separated in meiosis but not in mitosis.

Explanation: There are two main types of division that take place in eukaryotic cells, mitosis, and meiosis. Mitosis is the type of division that is used for growth, repair, and replacement of tissues. Therefore it is not necessary that the cells have  different chromosome numbers or are varied genetically in the daughter cells in the case of mitosis.

Meiosis is the division that takes place to form the gametes for sexual reproduction. It is important in the first stages of meiosis I, to introduce variation and to halve the chromosome number.

Chromosomes numbers are halved (from 46 to 23) during meiosis I because the gametes (sperm and egg) come together and fuse during fertilization to form a zygote. When this fusion occurs (23 from the zygote and 23 from the egg), the chromosome number needs to be returned to that of the parent cell (46).

Genetic variation is introduced during synapsis which only occurs in meiosis, not mitosis. Homologs exchange genetic information during crossing over of synapsis. Entire chromosomes also separate during meiosis I.

At the end of meiosis, four genetically unique cells are  produced with half the number of chromosomes as the parent cell (23 cromosomes) . After the process of mitosis is completed, two cells genetically identical to each pther are produced and have the same number of chromosomes as the parent cell (46 cromosomes).

Genetic variation is actually important because of changing environmental conditions.

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