1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zepler [3.9K]
3 years ago
14

Platyhelminths (flatworms) have practically no fossil record

Biology
2 answers:
-Dominant- [34]3 years ago
7 0
The answer TRUE they do not have a fossil record.
Dovator [93]3 years ago
7 0

True I have researched that they do not have any fossil record

You might be interested in
Native mammals found in Australia are marsupials. There are no naturally occurring placental mammals, which suggests that Austra
Reptile [31]
I’m not certain, but I believe it is continental drift
5 0
3 years ago
Read 2 more answers
What goes into the cell for cr to occur
BARSIC [14]
<span>In the presence of oxygen, one glucose molecule has the energy to make up to 38 ATP. The ATP production is determined by the following steps, (-2 ATP) glycolysis preparatory phase, (7-9 ATP) glycolysis pay-off phase, (5 ATP) oxidative decarboxylation of pyruvate and (20 ATP) Krebs cycle. One glucose which has 38 ATP hence was the summation of all the process mentioned that took place.  All these process take place under the cellular function of cellular respiration.<span>
</span></span>
6 0
2 years ago
Which processes are involved in the chloroplast of a plant cell?
Ahat [919]

Answer:

Chloroplast absorbs sunlight and it is used to make feed for the plant together with water and carbon dioxide gas. Chloroplasts are used to generate the free energy stored in ATP and NADPH via a photosynthesis process.

Explanation:

The site of photosynthesis action is chloroplast within a plant cell consisting of two chlorophyll molecules (PS1 and PS2), which have been embedded in the thylakoid membranes. The chloroplast consists of two chlorophyll molecules (photosynthetic pigments responsible for the green color of chloroplast). Each chlorophyll molecule absorbs light, caused to depart the chlorophyll molecules. This absorbs two electrons from each phenotype. PS2 electrons pass through the transportation chain for electron carriers, a series of redox reactions that release the energy used to synthesize ATP via Photophosphorylation/Chemiosmose (as the H+ ions diffuse through the stalked particles ATP, which changes the shape and catalysts, the electrochemical gradient diffuses down through the stalky particle ATP synthase).

Then these electrons replace the electrons lost in PS1. PS2 electron is replaced by photolysis electron, which when light strikes chloroplast, splitting the water into oxygen gas, H+ ions, and electron enzymes in the thylakoid space are catalyzed. The PS1 electrons combine to create NADPH with H+ ions and NADP (reduced NADP). These are the light-dependent photosynthetic reactions in chloroplasts. In the light-independent reactions, the NADPH and ATP are created. A pile of thylakoids is known as granum.

The light-independent processes take happen in the stroma. This is the site of carbon fixation; CO2 reacts with RUBP to generate GP (glycerate-3-phosphate) which is catalyzed by the enzyme RUBISCO (the most abundant enzyme in the world) (the most abundant enzyme in the world). The NADPH and ATP from the light-dependent processes convert GP to GALP (glyceraldehyde 3-phosphate). Two out of every 12 GALP molecules produced are used to synthesize glucose that can be employed either in breathing or in cellulose-forming condensation polymerization to add extra strength to the planted cell wall. The other GALP molecules are returned to RUBP.

7 0
2 years ago
1.Every time we eat, which body system is in control of digesting the food that we consume?
zysi [14]

Answer:

1. A. digestive system

B. excretory system

2. A. nervous system

B. respiratory system

Explanation:

1. the digestive system helps digest food and the excretory system helps get rid of waste.

2. asthma is considered a respiratory disease.

hope it helped. :) please mark as brainliest if it did. thanks in advance. :)

3 0
2 years ago
Read 2 more answers
Helppppppppppp i don’t knowwwww
devlian [24]
The answer you pick is right hopefully this helped
8 0
3 years ago
Other questions:
  • Just one week after conception, the cells of the zygote begin to ___________. in other words, the cells begin to specialize in s
    15·1 answer
  • I’m the image of the cell letter c is the control center of the cell. Please identify this organelle
    13·1 answer
  • Humans cut down trees in a location. This caused an increase in temperature and decrease in rainfall in that location. Which of
    10·2 answers
  • What is the name for the compound with the formula Ba0
    15·1 answer
  • Protein X is a protein that is composed of four subunits of equal size--alpha, beta, delta, and gamma--that are bound by either
    14·1 answer
  • Explain why high penetrance for a trait is an important criterion for including a disease in a genetic diagnosis test
    6·1 answer
  • Several bodily responses are described below. For each response, determine what caused the change in
    13·2 answers
  • what is the ecosystem of fungi, what is the ecosystem of snails, what is the ecosystem of earthworms, what is the ecosystem of a
    8·2 answers
  • How do patterns associated with various types of transformations affect expression of culture
    5·1 answer
  • Explain how root hairs help plants to absorb a lot of water in a short time​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!