Which test tubes were used to determine the optimal ph for pepsin activity?.

Answers

Answer 1

Answer:

tubes 2,5, & 6

Explanation:


Related Questions

Classify to the kingdom level an organism that has organ systems, lacks cell walls, and ingests food.​

Answers

Animalia
I took the test. A cell wall is only in plants/animalia all ingest food + has an organ system


Other than carbon dioxide name two carbon compounds found in plants.

Answers

Answer:

See below.

Explanation:

Other than Carbon Dioxide (CO₂), two carbon compounds found in plants are :-

Glucose (C₆H₁₂O₆)Pyruvic Acid (C₃H₄O₃)

The Calvin cycle, C3 pathway, or 3-phosphoglycerate photosynthesis are all names for the method by which plants fix carbon. PGA is a 3-carbon molecule.

What is the function of carbon in plants?

The reasoning is simple Plants require atmospheric carbon dioxide to make food, and as a result of increased CO2 emissions from industry and autos, some crops and trees will grow bigger and faster.

Carbon is continuously exchanged between plants and the atmosphere. During photosynthesis, plants take up carbon dioxide, much of which is then stored in their roots in grasslands, and forests.

Therefore, Glucose and phosphoglycerate are the two carbon compounds found in plants.

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Stromatolites are single celled prokaryotic bacteria cells.
True
False

Answers

True. They were originally formed by the growth of layer upon layer of cyanobacteria, a single-celled photosynthesizing microbe that lives today in a wide range of environments ranging from the shallow shelf to lakes, rivers, and even soils. It is a prokaryote, with no nucleus.

Answer: True


Explanation; Prokaryotes are all single-celled organisms that lack membrane-enclosed nucleus and organelles. Also Cyanobacteria are prokaryotic cells (the simplest form of modern carbon-based life) in that they lack a DNA-packaging nucleus. Bacteria, including the photosynthetic cyanobacteria, were the only form of life on Earth for the first 2 billion years that life existed on Earth.

3 A butterfly has a wingspan of 62 mm. Charlie is asked to draw the butterfly with a magnification of x 5. What should the wingspan be on Charlie's drawing?​

Answers

Answer: 310mm
Explanation:
Since we are asked to calculate the magnification of X5 and are given a base value of 62 mm we can conclude that we must multiply our base value of 62 mm times five to get the new magnified wing span of 310 mm


A cube has a volume of 343 cubic centimeters. The length, width, and
the height of the figure are equal. What are the cube's dimensions?

Answers

the cube root of 343 which would be 7 square root 7

domain.
a
Single-celled extremophiles that lack a nucleus would be classified in the
a. Eukarya
b. Bacteria
c. Archaea

Answers

Answer:

[C] Archaea

Explanation:

Single-Celled and lack a nucleus = prokaryotic organisms (that is, organisms whose cells lack a defined nucleus)

Most extremophiles are single-celled micro-organisms belonging to two domains of life – bacteria and archaea.

[RevyBreeze]

Organisms that obtain nutrients by breaking down dead and decaying plants and animals are called *
1. autotrophs
2. producers
3. decomposers
4. omnivores

Answers

decomposers such as vulcher birds

Answer:

decompose

Explanation:

Wetlands help slow the process of erosion by trapping sediments. Please select the best answer from the choices provided T F.

Answers

Wetlands help slow the process of erosion by trapping sediments. This statement is true.

What do you mean by Wetlands?

Wetlands are the areas where the soil contains an excess amount of water in it.

Wetlands generally function as normal sponges and gradually release the water outside in the soil. And due to this excess amount of water, soil gains its properties by trapping sediments that lead to the slow down of the erosion process.

Therefore, Wetlands help slow the process of erosion by trapping sediments.

To learn more about Soil erosion, refer to the link:

https://brainly.com/question/17905503

Answer:

True!

Explanation:

11. What would happen to the squid population if the crab population increased? Why?
12. What would happen to the sea otter population if the crab population increased? Why?
13. What would happen to the carrying capacity (increase or decrease) if all of the producers
in the food web died? Why?
14. What would happen to the total energy availability of your ecosystem if sea urchin,
shrimp, and baleen whales increase? Why?
15. More shrimp move into the ecosystem. How will the additional shrimp affect the carrying
capacity of octopus in the ecosystem?
16. More shrimp move into the ecosystem. How will the additional shrimp affect the carrying
capacity of phytoplankton in the ecosystem?

Answers

The food web shows how organisms are interconnected in a feeding relationship and how changes in one organism's population affect other organisms.

What is feeding relationship?

A feeding relationship shows how two or more organisms which interact together to obtain food are affected by changes that occur to either of the organisms in the relationship.

An example of a feeding relationship is one between the phytoplankton, the shrimp, the crab, the octopus, and the sea otter.

Phytoplankton are producersShrimp eat phytoplankton Crabs eat shrimps Octopus eat crabsSea otters eat octopus

If the crab population increased, the octopus population will increase due to availability of more food.

The sea otter population will increase if the crab population increased due to increase of individuals in the food chain.

The carrying capacity will decrease if all of the producers in the food web died because their will be no food to support the organisms in the food web.

The total energy availability in the ecosystem will increase if sea urchin shrimp, and baleen whales increase because increase in organisms.

The carrying capacity of octopus in the ecosystem will increase if more shrimp move into the ecosystem.

The carrying capacity of phytoplankton in the ecosystem will decrease if more shrimp move into the ecosystem.

Therefore, a food web shows how organisms are interconnected in a feeding relationship.

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a chemist takes a polysaccharide and turns it into many disaccharide. what reaction has the chemist performed and what must he add​

Answers

Answer:

hydrolysis

Explanation:

Water must be added to break the bonds in a polysaccharide, in order to become disaccharides and eventually monosaccharides.

Polysaccharides are composed of long polymerics of the monomeric sugars joined by linkages. A polysaccharide can be converted into a disaccharide by adding water through hydrolysis.

What is hydrolysis?

The hydrolysis reaction is the chemical reaction that involves the breaking of chemical bonds by adding water molecules. The water acts as a nucleophile that eliminates, substitutes, and performs another process to break the bonds.

The polysaccharides are made by linking the monomers of the sugar that can be converted into disaccharides by adding water to the reaction so that it breaks the linkages between the sugar molecules to produce two sugar molecule structures. The large molecules produce smaller molecules.

Therefore, polysaccharides can be converted into disaccharides by adding water.

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Describe the function of each organelle.


Vacuoles
Mitochondrion
Lysosomes
Cell membrane

Answers

Answer:

vacules- to hold waste prodcuts

mitochondrion- creates the chemical energy to power the cell's biochemical reactions

lysosomes- to break down excess or worn out parts of the cells

cell membrane- regulates what enters and exits the cell

List five cell organelles and describe their function.

Answers

Answer:

Ribosomes are tiny organelles that contain RNA and specific proteins within the cytoplasm. Within the cell, ribosomes are directly involved in the manufacture of proteins by using their RNA and amino acids.

This process involves decoding the information contained in the mRNA and using amino acids to produce the required proteins.

Mitochondria are some of the largest organelles within a cell.

Compared to some of the other organelles, mitochondria contain DNA which makes them semiautonomous. Mitochondria also contain a double-membrane with the inner membrane folding to form cristae.

Also known as the powerhouse, mitochondria play an important role in respiration where they generate ATP (adenosine triphosphate) from substrates in the presence of oxygen. Using their DNA, mitochondria are able to encode for some of the components they require to perform their functions.

The plasma membrane is the organelle that encapsulates the contents of the cell. Apart from encapsulating cell contents, the plasma membrane also plays a vital role in regulating the movement of substances in and out of the cell.

As such, it is actively involved in such both passive and active transportation to and from the cell. These processes also help maintain balance even when conditions outside the cell change.

The plasma membrane is made up of two layers of phospholipids (phospholipids bilayer).

Found in eukaryotic cells, Endoplasmic reticulum (ER) is the organelle that forms an interconnected network of flattened sacs (cisternae). Like some of the other organelles found in eukaryotes, ER is enclosed in a membrane. The ER is divided into two regions that vary in structure and function.

These include:

Smooth endoplasmic reticulum - The smooth ER is named so because it lacks a ribosome on its surface. As a result, it is more smooth in appearance as compared to the rough ER. It is involved in the synthesis of lipids (e.g. phospholipids) and carbohydrates that are used to build the cell membrane.

The partial pressure of oxygen in arterial blood is approximately:.

Answers

Answer:

between 75 mmHg and 100 mmHg

Explanation:

why do people share there own experiences even if no one ever cares?

Answers

they probably have no one to talk to :/
i think the reason of why people share there interests is because you just need to talk to someone and so at the end, you just see the replies.

Which action is an important part of a scientific methods

A. Teaching others
B. Making hypotheses
C. Traveling to distant places
D. Using calculators

Answers

Answer: the correct answer is b

Explanation: the reason being is the fact that it is an actually part of the scientific method.  all of the steps are question, research, hypothesise, experiment, observation, conclusion, and communicate.

The action which is important part of a scientific method is traveling to distant places. Thus, option C is correct.

What are scientific methods?

Scientific method is a method of accumulating knowledge which is characterized by the development of science since 17 th century.

Scientific method involves correct observation, hypothesis, and points what is observed and at last congnitive assumptions interprets the observation.

The main steps or basic steps in the process of scientific method are constructing observing the observation, asking questions, than form hypothesis, after that prediction is made, and testing of prediction is done.

Therefore, the action which is important part of a scientific method is traveling to distant places. Thus, option C is correct.

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The process of crossing over occurs in what phase of meiosis.

Answers

Answer:

A crossover happens in the first stage, or division in meiosis.

Explanation:

The crossing over is when the two chromosomes exchange segments with each other. To make sense of it, the parent's two DNA is mixing up to create the baby, so it makes sense to have that the first step, because you would not exist with your parent's DNA.  

I neeed help Starfish are invertebrates, which means they don't have which of the following body parts?


A. Mouth
B. Brain
C. Arms
D. Backbone

Answers

Answer:

D. backbone is the answer

Which describes a fungus–plant root association?
a. an independent relationship
b. disease-fighting
c. symbiotic mutualism
d. a decomposing relationship

Answers

Answer: c. symbiotic mutualism

Explanation:

Mutualism is a symbiotic relationship in which both species benefit

the answer is c symbiotic mutualism

Periodic table showing three rows. Row 1: boron (B), carbon (C), nitrogen (N), oxygen (P), fluorine (F), neon (Ne). Row 2: aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (cl), argon (Ar). Row 3: gallium (Ga), germanium (Ge), arsenic (As), selenium (Se), bromine (Br), krypton (Kr).

Which of the following elements has properties similar to S?

worth 60 points

Answers

Answer:

Oxygen and Selenium

Explanation:

Elements will have similar chemical properties if they have the same amount of valence electrons. Core electrons are not evaluated when comparing chemical properties.

Oxygen (O), Sulfur (S), and Selenium (Se) have 6 valence electrons each. They will have the similar chemical properties.

What are the advantages and disadvantages of slash-and-burn agriculture

Answers

Disadvantage- after burning the trees and forests many species that are adapted to that specific area lose their homes.
Advantage- provides sustainable food and income for the farmers who use this method.

Please answer!!
What does the PRKN gene do in the body?

Answers

Answer:

it is a component of a multiprotein

Explanation:

it is unkown what this gene does in the body

Why do some flowers have so many pollen grains and ovules?

Answers

Answer:

The underlying as- sumption is that larger pollen grains contain more nutrients than smaller ones, at least those that store starch, and this allows their pollen tubes to grow through deep stigmas that can not be traversed by pollen tubes from small pollen grains. Pollen number and duration of stigma receptivity.

Explanation:

Hope it may help you.

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thermal is to heat as_ is to water
a.drain
b.waste
c.dilute
d.absorb

Answers

Answer:

absorb

Explanation:

Answer:

D.absorb

Explanation:

cuz i said so

How are the terrestrial and aquatic biomes alike and different?

Answers

Answer:

The differences in the biomes are due to differences in the abiotic factors, especially climate. Climate is the typical weather in an area over a long period of time. The climate includes the amount of rainfall and the average temperature in the region. ... Aquatic biomes , which are water-based, such as ponds and lakes.

How are punnett squares used to predict the outcomes of genetic crosses.

Answers

Answer:

It will help determine the genetic of a offspring.

Explanation:

climbing roots are found in ?​

Answers

Answer:

Betle or Piper Betle

Explanation:

Pls mark me as brainliest

What is the principal enzyme involved in dna replication.

Answers

Answer:

DNA polymerase

Explanation: :)

The enzyme joins nucleotides to synthesize a new two strand of DNA. DNA replication is called proofreads because each new DNA molecule is made up.

Could a desert form at 45°N latitude?

Answers

Answer:  No, deserts are found at 30 degrees latitude

Explanation:

Most of the world's deserts are located near 30 degrees north latitude and 30 degrees south latitude, where the heated equatorial air begins to descend. ... As moist air passes over a mountain range, it expands and cools, precipitating most of its moisture as it rises.

Does photosynthesis take place in animals, plants, or both animals and plants?.

Answers

Animal cells do not undergo photosynthesis. Chloroplasts do not exist in animal cells. Chloroplasts are found in several unicellular eukaryotes, such as Euglena. They have both plant and animal traits.

I hope this helps.

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To pass freely through a cell membrane, a molecule must be
O A. small and polar
O B. large and polar
C. small and nonpolar
D. large and nonpolar

Answers

Answer:

here's your answer

option c. (small and nonpolar) is correct answer

please mark me as brainliest

The answer is c small and nonpolar
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