BIOLOGY HIGH SCHOOL

Which unicellular algae has cell walls made of silicon?a. diatoms
b. Euglena
c. slime molds
d. Chrysophytes

Answers

Answer 1
Answer: The answer to the question stated above is letter a. diatoms.
"Diatoms are unicellular algae that has cell walls made of silicon."

Diatoms are plantlike protists (unicellular algae) that produce thin, delicate cell walls rich in silicon; These planlike protists are members of the phylum Bacillariophyta.
Answer 2
Answer: The answer is a. diatoms.
Diatoms are unicellular algae. They are specific for their glass-like cell walls with sculpturing. Their cell wall is made of hydrated silicon dioxide. The cell wall is rigid and transparent because of silicon dioxide. Silicon cell wall cannot decompose, so can be a great help in explaining past conditions.

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After meiosis how do the daughter cells compared to the parent cell

Answers

You have to really compare your options. Fix the legs, the arms and the choices. If you have three green eggs and hams, then a 4x4, take that and help the mitosis stick with something like spaghetti. Thank you :)

Unlike gradualism, punctuated equilibrium involvesa. a slow change in evolution over time.
b. stable periods of change interrupted by rapidly occurring change.
c. species that are said to be in equilibrium.
d. a steady change in evolution over time.

Answers

The correct answer is option b. stable periods of change interrupted by rapidly occurring change.

The punctuated equilibrium is referred to a evolutionary pattern, in which the organism changes rapidly in order to survive the changing environment and remain unchanged for a very long period of time. hence, in this case, a stable period of change is followed by a rapidly changing phase.

The gradualism refers to the slow and steady changes, which helps the organism to adapt the changing environment.

d. a steady change in evolution over time.

Unlike gradualism, is the process by which a certain specie or creature undergo changes and variations in a limited and solely focusedly confined in long period of time. 

Which accessory organ's secretions neutralize stomach acid before it reaches the intestines? which accessory organ's secretions neutralize stomach acid before it reaches the intestines? pancreas liver salivary glands gallbladder?

Answers

The accessory organ that has secretions that can neutralizestomach acid before it reaches the intestines is the pancreas. The pancreasproduces and secretes sodium bicarbonate, which can protect intestines byneutralizing stomach acid. This may also relieve symptoms of acid refluxtemporarily.
The answer is pancreas. The pancreas is a gland which is then in the abdomen. It is a flat shape and an accessory organ that neutralize the stomach acid through it's secretions before it then would reach in the intestines.

Which element is found in both dna and protein

Answers

The correct answer is:

Nitrogen:

Explanation:

Nitrogen is a common happening element that is necessary for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that constitute the genetic material and life's blueprint for all cells, and in many other organic and inorganic compounds.
Nitrogen is found the both of them

Choose the correct answer to complete the sentence. The purpose of flipping through a literature anthology is to help you _____.A. choose research sources
B. help revise your draft
C. generate a topic
D. identify audience and purpose

Answers

C. generate a topic

Examining different writings could help you produce ideas.

One of the most important reasons for using reliable water sources is to reduce

Answers

Is to reduce faecal-oral diseases of which diarrhea, estimated to kill over three million people a year. 

An adequate quantity of water, is more important in controlling non-epidemic disease and allows better hygiene and thus can prevent disease. Sanitation alone has its greatest impact on infections. And better results come from observing practical outcomes such as the use and maintenance status of facilities, or improvements in hygiene practice. 
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