BIOLOGY HIGH SCHOOL

What are the constituents of the vascular and lymphatic systems? consider structural similarities and differences between blood and lymph vessels, differences in the cell and molecular content of the blood and lymph, differences in the mechanism of fluid propulsion within blood and lymph vessels?

Answers

Answer 1
Answer: Lymph vessels travel one-way, back to the heart, venous route; has similar structure to veins including tunics and valves structural difference includes the lymph vessel's need to diffuse bigger molecules; lymph transport slower and has lower pressure and speed than veins

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HIGH SCHOOL

What initiates the separation of sister chromatids in anaphase?

Answers

Cessation of delay signals received from unattached kinetochores initiates the separation of sister chromatids in anaphase.
HIGH SCHOOL

Nathan had leukemia as a child and had to undergo numerous bouts of chemotherapy. after the chemotherapy, he associated the waiting room with nausea. now 35 years old, he has to take his mother to the same hospital for breast cancer treatment, and he becomes nauseous while in the waiting room with her. nathan's nausea best illustrates:

Answers

This best illustrates spontaneous recovery.
MIDDLE SCHOOL

How many molecules of carbon dioxide are needed to make one molecule of G3P?

Answers

Answer: Three molecules

Explanation: For every three molecules of CO2 that enters the Calvin cycle (light independent reaction), one molecule of the three carbon glyceraldehyde 3-phosphate (G3P) is produced. Two molecules of G3P are needed to produce one molecule of glucose.

MIDDLE SCHOOL

What best describes the temperature of a city located along a windward coast

Answers

The answer is : Cooler summer temperatures than an inland location at the same latitude.

-your welcome ;)

Colder than on the leeward side because of the Seabreeze.
COLLEGE

All of the following statements are true. Decide which of the examples of molecular biology give evidence for evolution. Check all of the boxes that apply. 1 HOX genes are very similar in all animals.
2 Bug wings and bat wings are both used for flying.
3 Many species share much the same DNA.
4 Plant and animal cells have almost all of the same structures.

Answers

Answer:

1 HOX genes are very similar in all animals.

3 Many species share much the same DNA.

4 Plant and animal cells have almost all of the same structures.

Explanation:

Evolution corresponds to the process of modification and adaptation of species over time. The current diversity and genetic similarity of living beings is the result of processes of transformation and adaptation of species to various environments, constituting biological evolution. As evidence of this evolution, we can mention:

  • HOX genes are very similar in all animals: Hox genes encode transcription factors that define cellular identities along the major and minor axes of the body. Its coordinated expression in space and time is fundamental for embryonic modeling. These genes control the development and positional differentiation of cells in the embryo, and their disposition along the chromosome collinear to the parts of the embryo they will regulate. They are present in many different animals representing a huge source of evolutionary change.
  • Many species share much the same DNA: All living things have DNA molecules that encode all genetic information. Among living things there are similarities and sharing of parts of DNA. This is strong evidence of species evolution. An example of this is the similarity between humans and chimpanzees.
  • Plant and animal cells have almost all of the same structures: Although there are some differences, plant and animal cells share almost all cell structures. This is a strong indication of how life has evolved on our planet.

The right answers are:

HOX genes are very similar in all animals.

Many species share much the same DNA.

Plant and animal cells have almost all of the same structures.

MIDDLE SCHOOL

Where do each of these reactions take place?

Answers

Answer:

What are the reactions?

Explanation:

HIGH SCHOOL

A scientist was observing chondrocytes under a microscope. Which type of connective tissue was he observing? Bone



Cartilage



Collagen

Answers

Cartilage

Epiphyseal plate is the structure within a bone that contains cartilage cells that divide and increase the size of the bone until adulthood.

The epiphyseal plate, also known as epiphysial plate,or physis, or growth plate, is a hyaline cartilage plate in the metaphysis at each end of a long bone or diaphysis. The plate is found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line.
HIGH SCHOOL

A nurse is performing cardiac compression on an adult client. how far must the nurse depress the lower sternum to maintain circulation until a defibrillator is available?

Answers

3.2 inches. The nurse if doing a cardiopulmonary resuscitation. It is an emergency procedure combines with chest compression and artificial ventilation. It is done during a cardiac arrest. When doing so the nurse should compress the lower sternum by 3.2 inches.
MIDDLE SCHOOL

In which of the following ways could humans help the carbon cycle return to normal

Answers

Answer:

reduce the amount of fossil fuels they combust

Explanation:

Fossil fuels lead to environmental damage and its burning releases a lot of pollutants especially carbon and sulphur oxide to the air. The carbon increase in the atmosphere may lead to global warming because of the so-called greenhouse effect. To reduce carbon by returning to the normal cycle, humans can reduce the amount of fossil fuels they combust, try converting solid coal to gas or liquid and for removing pollutants or alternatively used renewable energy sources that are less pollutant.

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