What is the polysaccharide found in plant cell walls?

Answers

Answer 1

Answer: The polysaccharides that are found in the walls of the plant cells come in three types. These three types includes the cellulose, hemicelluloses, and the pectic polysaccharides. These are very important sugars that are found in the the cell walls plants.

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Which of the following is evidence for how the composition of the atmosphere has changed on Earth over time? a. Bands of iron found in rock layers show that the Earth's atmosphere became oxygenated by photosynthetic cyanobacteria millions of years ago.b. Frequent volcanic eruptions have caused the Earth's atmosphere to fill with sulfur aerosols dropping the temperature globally by 5 degrees.c. Multiple ice ages in the 18th century have caused a shift in atmospheric circulation on present day Earth.d. Over the past 50 years, greenhouse gas concentrations have rapidly decreased in the atmosphere.

A skull from the genus Homo that dates from approximately 750,000 years ago is discovered. Where is the foramen magnum be located?A. at the back of the skull
B. at the front of the skull
C. at the bottom of the skull
D. at the top of the skull

Answers

The correct answer would be option C. A skull from the genus Homo that dates from approximately 750,000 years ago has its foramen magnum at the bottom of the skull. The foramen magnum is the opening at the base of the skull where the spinal cord joins the brain. The foramen magnum of a Homo is in a more forward position indicating that it had a more erect posture.

A chimpanzee using a long twig to catch termites is an example of a(n) _____.a. external stimulus
b. patterned behavior
c. learned behavior
d. innate behavior

Answers

The correct answer is C. Learned behavior.

A chimpanzee uses the long twig to catch termites is an example of learned behavior. Chimpanzee belongs to the taxonomic genus called pan. It has two extant species, for example, bonobo and common chimpanzee.

They belong to the family Hominidae together with orangutans, gorillas, and humans. They are found in the Congo jungle.

A chimpanzee using a long twig to catch termites is an example of a learned behavior - c.

When a chimpanzee first observed that using a twig to catch termites could be a useful way of dealing with the termites, he noted that he could do it from then on.

What happens to an enzyme's structure as it exceeds the typical human body temperatur?

Answers

Answer;

The enzyme structure begins to break downintermolecular bonds are broken

enzyme molecules gain kinetic energy.

Explanation;

Enzymes are proteins that play an important function in the body of catalyzing reactions in the body.

Enzymes work best at optimum temperature; low temperature lower than optimum temperatures deactivates them and higher temperature denatures them.

The shape of an enzyme depends on its temperature; when they get too warm they get loose, and at very low temperatures they get too tight. At optimum temperature or at the right temperature then they are just at the right shape and the chemical reactions they catalyze will be at optimal rate.

Which of the following accurately describes kidney function?A. Kidneys will excrete salts if you have too little in your blood.
B. Kidneys are directed by the presence of antidiuretic hormone to excrete more water in urine.
C. Kidney function is controlled by the blood's composition and hormones.
D. Kidneys can excrete salts, but not glucose.

Answers

The answer to the question stated above is letter B. Kidneys are directed by the presence of antidiuretic hormone to excrete more water in urine.

Antidiuretic hormone is also known as ADH. It is a small molecule that is released by the pituitary gland at the base of the brain after being made nearby in the hypothalamus. ADH has what we called an "antidiuretic action" which prevents the production of dilute urine.

A team of researchers is diving to the ocean floor to study seaweed and fungi . Which zone of the ocean are they going to explore ?

Answers

The abyssal zone is the zone of the ocean where seaweed and fungi are present.

What is abyssal zone?

The abyssal zone is a layer of the ocean where seaweed and fungi are present. "Abyss" is a Greek word which means bottomless. This zone is located at the depths of 4,000 to 6,000 metres.

So we can conclude that the abyssal zone is the zone of the ocean where seaweed and fungi are present.

Learn more about zone here: brainly.com/question/25292087

Answer:

the abyssal zone

Explanation:

Viral infections can be cured with antibiotics t/f

Answers

colds are viruses that you can only get once and can be cured with antibiotics while its preffered to wait it out and take vitamins your answer is true

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In a dihybrid cross, round (RR), yellow (YY) seeds were crossed with wrinkled (rr), green (yy) seeds. What were the phenotypes of the F1 generation?

"RNA retroviruses use" A. use restriction enzymes to replicate and transcribe their genomes. B. viral reverse transcriptase to make a DNA copy that is integrated into the host genome and then host RNA polymerase transcribes it. C. host DNA polymerase to replicate their genome and host RNA polymerase to transcribe it. D. viral RNA-dependent RNA polymerase to replicate their genomes and transcribe it.