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3 years ago

What do micro-algae and macro-algae have in common?

1 answer:

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Answer:The two types of algae are microalgae and macroalgae. Microalgae are unicellular organisms where as macroalgae are multicellular organisms with simply differentiated body parts. Thus, the main difference between algae and microalgae is the level of classification.

Explanation:

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Define the Cambrian Explosion and include the dates.

ella [17]

Answer:

Cambrian explosion, the unparalleled emergence of organisms between 541 million and approximately 530 million years ago at the beginning of the Cambrian Period. The event was characterized by the appearance of many of the major phyla (between 20 and 35) that make up modern animal life

Explanation:

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3 years ago

Which endocrine gland is considered to be the master gland

nirvana33 [79]

Answer:

the pituitary gland

Explanation:

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3 years ago

Enzymes _______ the activation energy threshold required to start a chemical reaction.

mixas84 [53]

Answer:

lower

Explanation:

Enyzmes usually lower the activation energy required to start a chemical reacion. It's useful to remember enyzmes as compounds which help speeden up different chemical processes. They do this by decreasing the required activation energy and therefore increase the chance of a chemical reaction occuring.

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2 years ago

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How many chromosomes would a cell have during metaphase i of meiosis if it has 12 chromosomes during interphase?

exis [7]

How many chromosomes would a cell have during metaphase i of meiosis if it has 12 chromosomes during interphase?

24

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3 years ago

Match the following:Part A1. Transverse foramina present.2. No canals or foramen present. It articulates superiorly with the sac

Stels [109]

Answer:

1. Transverse foramina present: Cervical

2. No canals or foramen present. It articulates superiorly with the sacrum: Coccyx

3. Receive the most stress: Lumbar

4. Attach to ribs: Thoracic

5. Articulates with hip bones of the pelvis: Sacrum

Explanation:

The vertebral column is a series of 33 bones called vertebrae that play a key role in organ protection, movement of body, and overall support. The column has been divided into 5 different regions with the number of bones.

1. Cervical Vertebrate: These are the group of seven vertebrae of the neck, start immediately below the skull. Two cervical bones C1 and C2 are unique in function. They are responsible for the movement of the head. They have transverse foramina which gives passage to vertebral artery and vein.

2. Thoracic Vertebrae: They are a group of twelve small bones that form the vertebral spine in the upper trunk. The function of the thoracic vertebrae is to articulate with ribs to produce the bony thorax.

3. Lumbar Vertebrae: This is the largest segment of the vertebral column that consists of 5 bones between the rib cage and pelvis. They carry all of the upper body weight providing flexibility and movement to the trunk region. This is why it can receive the most stress easily.

4. Sacrum Vertebrae: There are 5 sacral vertebral fused bones. It connects to the hip bones and play role in forming a strong pelvis.

5. coccyx Vertebrae: These are a group of 4 fused bone. There is no vertebral canal due to a lack of vertebral arches. They provide an attachment site for muscles ligament and tendons. They also play a role in stabilization and support while sitting.

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3 years ago