BIOLOGY HIGH SCHOOL

What macromolecules are targeted by amylase?

Answers

Answer 1
Answer:

Answer: The correct answer is Carbohydrate.

Amylase is a digestive enzyme, which helps in the digestion of carbohydrates. In humans, it is secreted in the mouth ( salivary amylase) by salivary glands, and pancreas ( pancreatic amylase, which works in the small intestine).

The complex carbohydrate like starch is targeted by this enzyme, which converts it into simple sugar like maltose. This enzyme works best at pH 7.

Thus, the macromolecules carbohydrates are targeted by the enzyme amylase.

Answer 2
Answer: The answer is Carbohydrates

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HIGH SCHOOL

Select the correct statement about the life cycle of a fern.? 1, In ferns, meiosis results in the formation of egg and sperm cells.
2. Plant gametophytes are haploid multicellular bodies.
3. Plant sporophytes grow from haploid spores.

Answers

The right answer is 2.

A prothallus is a small thin blade of chlorophyllian cells when it is green but can also be colorless and saprotrophic. It is derived from the development of a protonema formed during the germination of a spore in pteridophytes (Pteridophyta, ferns and other closely related species). It is a structure formed by mitotic divisions of haploid cells.

HIGH SCHOOL

Is Cholera a genetic or an environmental disease?

Answers

It's an environmental disease
Cholera is an environmental disease
HIGH SCHOOL

PPPPPPLLLLLLLLEEAASSSEE HHEEEELLLP MEEEEEE!!! Which of the following is used as evidence in supporting the idea that life changes over time? the big bang theory the existence of vestigial structures the similarities in body systems such as the endocrine and nervous systems the time period in which an embryo develops

Answers

 the time period in which an embryo develops
HIGH SCHOOL

Based on the information below, answer the following three questions, assuming complete dominance. "In humans, the ability to roll the tongue is a dominant trait;
the inability to roll the tongue is a recessive trait."
If an individual homozygous dominant for this trait has a child with an individual who cannot roll his tongue, what is the chance that the child will have a heterozygous genotype?

Answers

Answer:

100%

Explanation:

Let’s represent the dominant tongue rolling trait as: R

and the recessive trait as: r

A homozygous individual will have the same alleles i.e. RR (for dominant), rr (for recessive). Note that Rr is heterozygous.

An individual homozygous dominant for tongue rolling has the alleles RR

and an individual who cannot roll his tongue has rr, that is homozygous recessive .

To determine the trait of their offspring, we'll cross their traits

Crossing the two :

RR  x  rr

Rr, Rr, Rr, Rr

All the offspring will inherit the dominant R and the recessive r from both parents.

Therefore, there is a 100%  chance that the child will have a heterozygous genotype.

HIGH SCHOOL

A paramecium feeds on organic matter in a pond. How does it capture food?

Answers

It captures food by phagocytosis (type of endocytosis. A paramecium is a unicellular organism, so it intakes its food by surrounding it and engulfing it.) Hope this helps.


HIGH SCHOOL

Which of the following life processes has evolved and been conserved through nearly every modern organism?

Answers

Answer:

Metabolism

Explanation:

I had the same question

Do u have options to thus question?
HIGH SCHOOL

After an enzyme is mixed with its substrate the amount of product formed is determined at 10 second intervals for 1 minute. Determine the rate of change for the amount of product formed during the first 30 seconds of data

Answers

Answer: 50%

Explanation: After an enzyme is mixed with its substrate the rate of change for the amount of product formed during the first 30 seconds of data is given by multiplying the total amount of product times the 30 seconds of data and dividing it into the total time in seconds:

30 x 100 / 60 = 50 %

HIGH SCHOOL

What do scientists typically do before formulating a testable hypothesis?

Answers

they conduct a literature review before formulating any hypothesis. carrying out a literature review involves utilizing research databases to look for research materials that cover or are related to a certain topic of interest. the scope of the study and subject matter will influence the selection of research materials. information in these material play a crucial role when scientist are formulating hypothesis. 
Most of the scientific method is sparked by a simple question: Why does this happen? A scientist (or any observing party) may see an event and wonder what caused that reaction or event. In order to find out, though, they must first cogently pose the question that outlines what they are looking for in the simplest terms possible. Then they must learn about the event, either through further observation or by asking those with more information or study in that particular area. Then, any variables that may affect the outcome of the event that occurred must be identified, so that they can be accounted for and either minimized or accentuated depending on the nature of testing. Only then should a testable hypothesis be formed.
HIGH SCHOOL

When rice is left in a pan of water overnight, what will happen to the rice? This process is called?

Answers

When a rice is left in a pan of water overnight, the rice will absorb the water. This process is called osmosis. A solvent, in this case water, passes through a semi permeable membrane, the rice outer membrane, from a less concentrated to a more concentrated solution.

The rice will absorb up the water as long as it isn't boiling.

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