The organism shown in figure 21-2 is an example of

A. A flagellate

B. A ciliate

C. An amoeba

D. A spore-forming protist

Answer:

It uses the potential energy of flowing hydrogen ions to make ATP

Explanation:

Answer: it uses potential energy of flowing hydrogen ions to make atp

Explanation:

Answer:

Explanation:

Zircon has large amount of Uranium and very restricted amount of lead. It is very essential in Uranium lead dating. The features which make it essential for U-Pb dating are as follows:

a) Zircon is very stable molecule and it is highly resistant to high temperature and pressure. Also it has the highest blocking temperature. It is chemically inert and is not affected by weathering

b) It has a special characteristics – if left at room temperature, radio dating can destroy its strong structure but when  exposed to high temperature the radio dating becomes self-annealing.  

Answer:

Fossils of mollusks would be found in lower strata than that of arthropods

Explanation:

Fossils are found in different layers of sedimentary rocks. The fossils of organisms that evolved earlier are found in the lower strata while those evolved later are preserved as fossils in the upper strata.  If mollusks evolved before arthropods, fossils of arthropods would be present in upper layers while those of mollusks would be found in deeper layers.

If mollusks evolved before arthropods, their fossils would typically be found in older rock strata, deeper in the Earth's crust, relative to the rock strata containing arthropod fossils.

In the geological principle known as the Law of Superposition, it is generally accepted that in undisturbed rock layers, the older rocks are found at lower depths, and the younger rocks are found closer to the surface. This principle is fundamental to the study of stratigraphy and the dating of fossils within rock layers.

So, if scientists observe a rock stratum with fossils and they know that mollusks evolved before arthropods, they would expect to find mollusk fossils in rock layers that are deeper (older) than the rock layers containing arthropod fossils. This stratigraphic order aligns with the concept of relative dating in geology, where the sequence of fossil appearances in rock layers can provide insights into the order of evolutionary events.

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Answer:

Phosphorylation

Explanation:

Phosphorylation is one of the metabolic stages of cellular respiration. It happens only in the presence of oxygen (aerobic beings), which is necessary to oxidize intermediate molecules and participate in reactions to form the ATP molecule and produce energy.

In the early stages of cellular respiration (glycolysis and Krebs cycle), some of the energy produced in the breakdown of compounds is stored in intermediate molecules, coenzymes such as NAD + and FAD +.

This oxidation energy of coenzymes is used for ATP synthesis. For this occurs phosphorylation of ADP, ie it receives phosphate groups. This is why this process is called Oxidative Phosphorylation.

Increasing air temperatures can cause an increase in the growing season of Arctic plants.

The blood types of the four samples were determined on the basis of the anti-factor present. The condition of each of the blood samples are given below:

Based on this, it may be concluded the result as:

Blood reacts with anti-A possess Blood group B.

Blood reacts with anti-B possess Blood group A.

Blood reacts with anti-A and anti-B possess Blood group O.

Rh-antigen may be defined as the transmembrane proteins that are expressed at the surface of erythrocytes.

Therefore, it is well described above.

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Answer:

C) Directional selection

and here are the rest of the answers

The correct answer is Vestibular senses, kinesthetic sense, and skins senses all make up: Somesthetic senses  

Somesthetic senses are the sensation that is produced by the skin, joint, muscles, viscera and organs of balance. Merely looking at the word, the first part “soma” means body, esthetic, which is the second part, means feelings.

We have three somesthetic sense system, they are the skin senses, the kinesthetic sense, and the vestibular senses

The skin senses: It plays the role of receiving and transmitting information from the outside into the central nervous system. The sensory receptors collect information about pressure, temperature, including pain. Simply put, the skin senses is the sensory systems used for processing touch, cold, pressure and pain.  

The kinesthetic senses: when your eyes are closed with your hand raised above your head, you surely know where hand is because there are receptors known as proprioceptors, which is responsible for telling you about joint movement or contracting. These special receptors are part of the body senses movement and tell you where your arms, hand, leg are located in relation to each other. This senses is known as kinesthetic senses. It is the senses of posture, muscle movement and strains on joint and muscle.

The vestibular sense simply refers to the sense of balance. This senses structure is present within the innermost chamber of the ear. Vestibular sense are structures in the air that tells you about the body position. Simply put, it refers to the senses of balance, acceleration and position in space.

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KEYWORDS:

A wetland refers to a different ecosystem, which is flooded by water, either seasonally or permanently, where the oxygen-free procedures exist. The main element, which separates wetlands from the other water bodies or landforms is the characteristic vegetation of aquatic plants, amended with the specific hydric soil.  

Swamp refers to a wetland ecosystem featured by mineral soils with poor drainage and by plant species dominated by trees. The swamps are found all through the world, most usually in low-lying regions with poor drainage adjacent to rivers that supply the swamp with water. Some of the swamps develop from marshes, which gradually fill in, permitting woody shrubs and trees to develop.  

... Swamp ... (Apex)

The right options are;  

(atmosphere contains hydrogen and helium)  

(has 50 or more moons)  

(has multiple rings)

Jupiter and Saturn are gas giants that are made of hydrogen and helium gas. Jupiter is the largest planet in the solar system, and it is about 1300 times larger than planet Earth. Saturn is the second-largest planet. Jupiter and Saturn are surrounded by thousands of rings, and their speed of rotation causes strong winds, and huge cloud bands. They also have many satellites. Jupiter has about 62 moons, while Saturn has more than 30 moons.

Answer:

a, b, and d

Explanation:

edge2021

The answer is : Mudslides instantly buried marine organisms in sediment.

( I got this right on a quiz ) (^○^)

Answer:

The end result of cytokinesis is one cell physically divides into two cells.

Explanation:

The process of the M- phase of cell division, by which 1 cell divides into 2 cells is the cytokinesis. Cytokinesis takes place after the karyokinesis. It normally follows nuclear doubling. It occurs in both mitosis or in meiosis.

Plant cell cytokinesis is different from the animal cytokinesis because of cell wall rigidity. Plant cells forming cleavage furrow, cell plate arises a double cell wall for both daughter cells. Cytokinesis is the final stage of the cell division or cell cycle.

Thus, the end result of cytokinesis is one cell physically divides into two cells.

Answer:

pathogens

Explanation:

Animals with body parts arranged around a central point are radially symmetrical. This structure is common in species like starfish and jellies, where any slice through the central axis produces mirrored halves.

Animals that have their body parts arranged around a central point are C. radially symmetrical. This form of symmetry is common in several species, particularly those from the cnidaria and echinoderm group, which includes jellies and starfish, respectively. In radially symmetrical animals, any slice passing through the central axis will divide the organism into mirrored halves. Unlike bilateral symmetry (seen in humans, for instance), where only one plane can divide an organism into two virtually identical halves, radial symmetry allows for multiple planes of division.

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While the cuticle has several advantages such as protection, they do not confer much advantage to larger eukaryotes. This is because of their limiting factor to growth (size). The cuticle would also restrict development of different skin structures such as fur.  Additionally, while the cuticle provides leverage for muscular movements on arthropods, nematodes, and flatworms, it is not necessary for larger animals since the same function is rendered by the endoskeleton.

Answer: Contact the authorities immediately

The nurse should objectively document her assessment that entails description of physical findings of abuse in the medical record and she have a duty to report cases of actual or suspected abuse in the child to the authorities. In addition, the nurse must also provide appropriate treatment to the child like giving cold compress or pain reliever.

Answer:

b

Explanation:

The frogs will have greater competition for resources.

Answer:

cytoplasm

Explanation:

Answer:

D. A river floods over its channel banks and deposits sediment on the wide valley bottom.