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
Mariana [72]
3 years ago
11

Starfish, sea stars, and sea urchins are classified as echinoderms. What does the prefix "echin-" mean?

Biology
1 answer:
faltersainse [42]3 years ago
8 0

Answer:

The prefix "echin-" means D. The prefix "exo" means outside/external.

Explanation:

You might be interested in
When ADP is converted to ATP, the new phosphate is added to which position on the molecule?
NeX [460]

⁻D

The illustration shows an ADP molecule. Adding of a phosphate at position A created ATP

Explanation

It takes a relatively high amount of energy to add the phosphate because it creates a less stable molecule, ATP is less stable than ADP. Part of the reason is because of the closeness, in space, of the O⁻ groups of the phosphates molecules. Their proximity to each other results in repulsion force that make phosphate bond unstable. However this provides an advantage to ATP as a cell energy molecule because it can be easily hydrolyzed back to ADP and this phosphate bond energy harnessed by the cell’s biochemical activities.

Learn More:

brainly.com/question/8514203

brainly.com/question/1615939

#LearnWithBrainly

4 0
4 years ago
Holly is a healthy woman who is 22 years of age. using this information, calculate her target heart rate zone for moderate-inten
guajiro [1.7K]

Answer:

99 to 138.6 bpm

Explanation:

The heart rate of an individual is a measure of how many times the heart beats in a given time, usually measured in beats per minute (bpm).

Resting heart rate is the number of beats per minute when an individual at rest. Generally, it can be understood that the lower the resting heart rate, the more physically fit an individual is.

The maximum heart rate for an individual is 220 minus their age. The target heart rate for moderate physical activity is 50-70% of the maximum heart rate and for vigorous physical activity it is 70-85% of the maximum heart rate.

Based on Holly's age, her maximum heart rate is 220 - 22 = 198 bpm

Her heart rate zone for moderate physical activity is 50-70% of 198 bpm: 99 to 138.6 bpm

Her heart rate zone for vigorous physical activity is 70-85% of 198 bpm: 138.6 to 168.3 bpm

7 0
3 years ago
Which situation can be identified by a biodiversity study of an area?
vladimir2022 [97]

Answer:

d

Explanation:

6 0
3 years ago
Read 2 more answers
Which of these objects are malleable? Check all that apply.(A) tin fork and knife from a camping set (B) antique ceramic vase (C
alekssr [168]
A. C. and F. all are malleable because they are easy to bend with heat or just by hand...
3 0
4 years ago
Read 2 more answers
How many mongo seed are equal to 3.50 moles of mongo seeds?​
frozen [14]

Answer:

The correct answer is - 2.107 x 10^24 mango seeds.

Explanation:

Given:-

number of moles of mango seeds = 3.50 mol

Solution:-

1 mol of mango seeds = 6.02 x 10^23 mango seeds

6.02 x 10^23 is Avagadro numbers

1 mole is the number of particles contained in a substance . The number of moles can also be calculated by dividing the mass by the molar mass of the element or molecule of the substance  with the Avogadro's number.

Therefore,

3.50 mol of mango seeds = 3.50 x 6.02 x 10^23 mango seeds

3.50 mol of mango seeds = 21.07 x 10^23 mango seeds

3.50 mol of mango seeds = 2.107 x 10^24 mango seeds

3 0
3 years ago
Other questions:
  • What are the names and chemical formulas for three of the most studied pollutants (primary or secondary)?
    5·1 answer
  • What are trans fats? Why are they bad?
    7·1 answer
  • Why are photosynthetic organisms considered to be the first level of the food pyramid?
    8·2 answers
  • When you take a deep breath before diving underwater, air is forced into your lungs by the contraction of your.. -alveoli -lungs
    8·2 answers
  • What is the most important reason that sediments at beaches are usually rounded and smooth?
    9·1 answer
  • When two atoms join together what do they form
    11·1 answer
  • Identify some ways that humans are reducing their impact on ecosystems,
    7·1 answer
  • What is halogens element
    11·1 answer
  • How many thin layers of phospolipids make up the cell membrane?
    14·2 answers
  • A population of fruit flies on an island lay their eggs in some rotting fruit. Some of the fruit is blown into the ocean by a st
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!