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babymother [125]
3 years ago
11

Why is bicarbonate is mixed with water in the leaf disc experiment?

Biology
1 answer:
amm18123 years ago
5 0

Answer:

When sodium bicarbonate is added to the water, the bicarbonate ion acts as a carbon source for photosynthesis causing the leaf disks to sink. As photosynthesis proceeds, oxygen is released into the interior of the leaf, which changes its buoyancy causing the disk to rise.

hope this helps :)

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With examples, discuss the role of sensory memory on long term recall
igor_vitrenko [27]

Explanation:

How Does Sensory Memory Work?

During every moment of your existence, your senses are constantly taking in an enormous amount of information about what you see, feel, smell, hear, and taste. While this information is important, there is simply no way to remember each and every detail about what you experience at every moment. Instead, your sensory memory creates something of a quick "snapshot" of the world around you, allowing you to briefly focus your attention on relevant details.

Types of Sensory Memory

Experts also believe that different senses have different types of sensory memory. The different types of sensory memory have also been shown to have slightly different durations.

Iconic memory, also known as visual sensory memory, involves a very brief image. This type of sensory memory typically lasts for about one-quarter to one-half of a second.

Echoic memory, also known as auditory sensory memory, involves a very brief memory of sound a bit like an echo. This type of sensory memory can last for up to three to four seconds.

Haptic memory, also known as tactile memory, involves the very brief memory of a touch. This type of sensory memory lasts for approximately two seconds.

5 0
3 years ago
He three types of seismic waves produced by an earthquake are primary, secondary, and
Westkost [7]
Seismic waves are waves produced by earthquakes. This occurs when rocks under the earth suddenly break or explode. There are two MAIN TYPES of seismic waves called body waves and surface waves.   <span>Body waves have the capacity to travel through the Earth's inner layers. They have a higher frequency and they are the ones that first occur under water at the onset of an earthquake. They can be subdivided into two types, the primary and secondary waves that arrive at seismic records one after another.

Surface waves can only traverse through the surface of the planet like ripples in the water. These waves can easily be detected on a seismogram result. These waves arrive after body waves and they are the ones mostly responsible for damages and destruction bought by earthquakes.</span>       <span> </span>
8 0
3 years ago
Which example illustrates Darwin's main contribution to the theory of evolution? A. An agricultural pest has been exposed to a p
Svet_ta [14]
"When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce" is the one example that <span>illustrates Darwin's main contribution to the theory of evolution. The correct option among all the options that are given in the question is the third option or option "C". I hope it helps you.</span>
3 0
3 years ago
Read 2 more answers
Which particles is the fundamental unit of all matter in both living and nonliving
erica [24]

Answer:

atoms

Explanation:

all things in the universe are made of atoms and they are considered the fundamental unit of matter.

non-living things are composed of different compounds and molecules.

living things are made of cells, and cells themselves are made of different molecules. So living things are also made of atoms.

5 0
3 years ago
What type of transport takes place when a protein allows an ion to enter a cell but no energy is needed to make this happen
scZoUnD [109]

Answer:

Facilitated Transport.

Explanation: In facilitated transport, also called facilitated diffusion, materials diffuse across the plasma membrane with the help of membrane proteins. Hopefully this helps!

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